CN114765612A

CN114765612A - Service access method and device

Info

Publication number: CN114765612A
Application number: CN202110046444.9A
Authority: CN
Inventors: 谢松伯; 刘强
Original assignee: Tencent Technology Shenzhen Co Ltd
Current assignee: Tencent Technology Shenzhen Co Ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2022-07-19

Abstract

The application belongs to the technical field of communication and discloses a method and a device for service access. After receiving the service request message, if the first service server determines that the first service server is currently in an overload state, the first service server redirects the target domain name and returns the obtained redirection address information to the control equipment, so that the control equipment sends the service request message to the corresponding second service server based on the redirection address information. Therefore, each service server can be rapidly scheduled according to the current load state of each service server, the load balance of each service server is realized, and the service quality is improved.

Description

Service access method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for service access.

Background

With the development of internet technology and the popularization of intelligent terminal devices, users can usually access the service server through the control device to obtain corresponding service data, such as web page data, returned by the service server.

In the prior art, when a control device performs service access by using a domain name, a domain name resolution server is usually required to perform domain name resolution, obtain a corresponding Internet Protocol (IP) address, and access the corresponding service server by using the determined IP address. If the service server is overloaded, the service server needs to be scheduled through the domain name resolution server.

However, since the domain name resolution server needs To perform domain name resolution on the same domain name again after Time To Live (TTL), the scheduling efficiency of the service server is low, and when the single domain name traffic is large, the load of the service server is difficult To balance, which results in a low success rate of service access and poor quality of service.

Disclosure of Invention

The embodiment of the application provides a method and a device for service access, which are used for improving the scheduling efficiency of each service server, realizing load balance among the service servers and improving the service quality when service access is performed.

In one aspect, a method for service access is provided, which is applied to a first service server, and includes:

when a service request message sent by control equipment is received, acquiring current load information, wherein the service request message at least comprises a target domain name associated with a first service server;

if the current overload state is determined based on the load information, redirecting aiming at the target domain name to obtain the redirection address information corresponding to the target domain name;

and returning the redirection address information to the control equipment, so that the control equipment sends the service request message to the corresponding second service server based on the redirection address information.

In one aspect, an apparatus for service access is provided, including:

the receiving unit is used for acquiring current load information when receiving a service request message sent by the control equipment, wherein the service request message at least comprises a target domain name associated with the first service server;

the obtaining unit is used for redirecting the target domain name if the current overload state is determined based on the load information, and obtaining redirection address information corresponding to the target domain name;

and the return unit is used for returning the redirection address information to the control equipment, so that the control equipment sends the service request message to the corresponding second service server based on the redirection address information.

In one aspect, a control device is provided, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to perform the steps of any of the above-described methods of service access.

In one aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of any of the above-mentioned methods of service access.

In one aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method provided in any of the various alternative implementations of service access.

In the method and the device for service access provided by the embodiment of the application, after the control device performs domain name resolution on the target domain name, the control device sends a service request message to the first service server according to a domain name resolution result. After receiving the service request message, the first service server redirects the target domain name if determining that the first service server is currently in an overload state, and returns the obtained redirection address information to the control device, so that the control device sends the service request message to the corresponding second service server based on the redirection address information. Therefore, each service server can be rapidly scheduled according to the current load state of each service server, the load balance of each service server is realized, and the service quality is improved.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic architecture diagram of a service access system according to an embodiment of the present application;

fig. 2 is a flowchart of an implementation of a method for service access in an embodiment of the present application;

fig. 3 is a schematic diagram of a burst flow curve according to an embodiment of the present application;

fig. 4 is a flowchart illustrating a detailed implementation of a method for accessing a service in an embodiment of the present application;

fig. 5 is an interaction flowchart of a method for service access in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a service access device in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a control device in an embodiment of the present application.

Detailed Description

In order to make the purpose, technical solution and beneficial effects of the present application more clear and more obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

First, some terms referred to in the embodiments of the present application will be described to facilitate understanding by those skilled in the art.

The terminal equipment: may be a mobile terminal, a fixed terminal, or a portable terminal such as a mobile handset, station, unit, device, multimedia computer, multimedia tablet, internet node, communicator, desktop computer, laptop computer, notebook computer, netbook computer, tablet computer, personal communication system device, personal navigation device, personal digital assistant, audio/video player, digital camera/camcorder, positioning device, television receiver, radio broadcast receiver, electronic book device, gaming device, or any combination thereof, including the accessories and peripherals of these devices, or any combination thereof. It is also contemplated that the terminal device can support any type of interface to the user (e.g., wearable device), and the like.

A server: the cloud server can be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, and can also be a cloud server for providing basic cloud computing services such as cloud service, a cloud database, cloud computing, cloud functions, cloud storage, network service, cloud communication, middleware service, domain name service, security service, big data and artificial intelligence platform and the like.

Cloud computing (cloud computing) refers to a delivery and use mode of an IT infrastructure, and refers to obtaining required resources in an on-demand and easily-extensible manner through a network; the generalized cloud computing refers to a delivery and use mode of a service, and refers to obtaining a required service in an on-demand and easily-extensible manner through a network. Such services may be IT and software, internet related, or other services. Cloud Computing is a product of development and fusion of traditional computers and Network Technologies, such as Grid Computing (Grid Computing), distributed Computing (distributed Computing), Parallel Computing (Parallel Computing), Utility Computing (Utility Computing), Network Storage (Network Storage Technologies), Virtualization (Virtualization), Load balancing (Load Balance), and the like.

With the development of diversification of internet, real-time data stream and connecting equipment and the promotion of demands of search service, social network, mobile commerce, open collaboration and the like, cloud computing is rapidly developed. Different from the prior parallel distributed computing, the generation of cloud computing can promote the revolutionary change of the whole internet mode and the enterprise management mode in concept.

Cloud storage: the distributed cloud storage system (hereinafter referred to as a storage system) refers to a storage system which integrates a large number of storage devices (storage devices are also referred to as storage nodes) of different types in a network through application software or application interfaces to cooperatively work through functions of cluster application, grid technology, distributed storage file systems and the like, and provides data storage and service access functions to the outside.

At present, a storage method of a storage system is as follows: logical volumes are created, and when created, each logical volume is allocated physical storage space, which may be the disk composition of a certain storage device or of several storage devices. The application stores data on a certain logical volume, that is, the data is stored on a file system, the file system divides the data into a plurality of parts, each part is an object, the object contains not only the data but also additional information such as data identification, the file system writes each object into a physical storage space of the logical volume, and the file system records storage location information of each object, so that when the application requests to access the data, the file system can allow the application to access the data according to the storage location information of each object.

The process of allocating physical storage space for the logical volume by the storage system specifically includes: physical storage space is divided in advance into stripes according to a set of capacity measures of objects stored in a logical volume (the measures usually have a large margin with respect to the capacity of the actual objects to be stored) and Redundant Array of Independent Disks (RAID), and one logical volume can be understood as one stripe, thereby allocating physical storage space to the logical volume.

DataBase (DataBase): in short, the user can add, query, update, delete and the like to the data in the electronic file cabinet, namely the place for storing the electronic file. A "database" is a collection of data that is stored together in a manner that can be shared by multiple users, has as little redundancy as possible, and is independent of the application.

A database management system: the computer software system designed for managing the database generally has basic functions of storage, interception, safety guarantee, backup and the like. The database management system may be categorized according to the database model it supports, such as relational, extensible markup language, or according to the type of computer supported, such as server clusters, mobile phones; or classified according to the Query Language used, such as Structured Query Language (SQL), XQuery; or by performance impulse emphasis, e.g., maximum size, maximum operating speed; or other classification schemes. Regardless of the manner of classification used, some database management systems are capable of supporting multiple query languages across categories, for example, simultaneously.

TTL: is a time of persistence for a Domain Name resolution record in a Domain Name System (DNS) server. And when the DNS server receives the analysis request, performing domain name analysis on the received domain name to obtain an analysis record. If receiving the resolution request of the domain name again in the TTL for obtaining the resolution record, the domain name resolution is not carried out any more, but the domain name record is directly returned.

Domain Name (Domain Name): is the name of a computer or group of computers on the Internet (Internet) consisting of a string of names separated by dots, used to identify the electronic location of the computer at the time of data transmission. The purpose of a domain name is to be the address of a group of servers that are easy to remember and communicate with. Each host has a unique fixed-identity IP address to distinguish between thousands of users and computers on the network. Because the IP address is a digital mark and is difficult to memorize and write when in use, a symbolic address scheme is developed on the basis of the IP address to replace a digital IP address. Each symbolized address, i.e. domain name, corresponds to a specific IP address.

Uniform Resource Locator (URL): is a compact representation of the location and access method of a resource available from the internet, as long as the resource can be located, the system can perform various operations on the resource, such as accessing, updating, replacing, and finding its attributes. The base URL contains a schema (or protocol), a server name (or IP address), a path, and a file name.

Content Delivery Network (CDN): the network content service system is a novel network content service system which is built based on an IP network and provides content distribution and service based on the efficiency requirement, quality requirement and content order of content access and application. In a broad sense, the CDN represents a network application service model with high quality, high efficiency and clear network order built based on a network.

Transparent transmission: namely, transparent transmission, means that the transmission network is only responsible for transmitting the service to be transmitted to the destination node, regardless of the transmission service, and meanwhile, the transmission quality is ensured, and the transmitted service is not processed. During the transmission of the data, the set of data is not changed in any way, i.e. not truncated, not grouped, not coded, not encrypted, not confused, etc., as if the transmission were transparent and had been in the hands of the final recipient.

The design concept of the embodiment of the present application is described below.

With the development of internet technology and the popularization of intelligent terminal devices, the number of business services and intelligent terminals is increasing. The user can usually access different service servers through the control device to obtain service data such as web page content.

In the conventional technology, when the control device accesses the service server through the domain name, the following method is generally adopted:

the control device sends the domain name to a domain name resolution server. And the domain name resolution server performs domain name resolution on the received domain name to obtain a corresponding IP address list, and returns the IP address selected from the IP address list to the control equipment. And the control equipment accesses the service server corresponding to the received IP address.

In this way, if the service server is overloaded, the domain name resolution server is required to adjust the service server accessed by the control device, that is, the domain name is resolved again to obtain the IP addresses of other service servers. Because the analysis records of the same domain name need to keep TTL time, the scheduling efficiency of the domain name analysis server to each service server is low. Moreover, the maximum number of IP addresses in the IP list is 16, the number of service servers that can be called is small, and if the capacity of a service server is expanded, the mapping relationship between a domain name and the service server needs to be added in the domain name resolution server in advance, so that the capacity expansion operation is complicated. In a scene of sudden and sharp increase of service access data volume, the load among the service servers is difficult to balance, the success rate of service access is low, the service quality is low, and the user experience is reduced.

Therefore, a technical scheme for service access that can improve the scheduling efficiency of the service server, achieve load balancing, and improve the service quality is urgently needed.

In view of the fact that when the accessed service server is overloaded, the accessed service server can be scheduled in a redirection mode, a scheme for service access is provided in the embodiment of the application. After receiving the service request message, if the first service server determines that the first service server is currently in an overload state, the first service server redirects the target domain name and returns the obtained redirection address information to the control equipment, so that the control equipment sends the service request message to the corresponding second service server based on the redirection address information.

To further explain the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the specific embodiments. Although the embodiments of the present application provide method steps as shown in the following embodiments or figures, more or fewer steps may be included in the method based on conventional or non-inventive efforts. In steps where no necessary causal relationship exists logically, the order of execution of the steps is not limited to that provided by the embodiments of the present application. The method can be executed in sequence or in parallel according to the method shown in the embodiment or the figure when the method is executed in an actual processing procedure or a device.

The terms "first," "second," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1, a schematic diagram of an architecture of a service access system is shown, which includes a control device 100, a domain name resolution server 101, and a service server 102, and may further include a redirection server 103. In the embodiment of the present application, only the service server 102 includes the first server 1021 and the second server 1022 for example, in practical applications, the number of the service servers 102 may be multiple, and is not limited herein.

The control apparatus 100: the terminal device may be a terminal device, or the server may be a server, and may be installed with an application program such as a browser. A user can request service data such as a web page through the control device 100.

Specifically, the control device 100 sends the accessed target domain name to the DNS server at the time of service access, receives the target IP address returned by the domain name resolution server 101, and sends the service request message to the first server 1021 based on the target IP address access. If the service response message returned by the first server 1021 is received, the service processing is performed on the received service response message, for example, a web page is displayed based on the received web page data. If redirection address information returned when the first server 1021 is in an overload state is received, the service request message is sent to the corresponding second server 1022 based on the redirection address information.

The domain name resolution server 101: and the domain name resolution module is used for performing domain name resolution on the received target domain name to obtain a corresponding IP address.

Alternatively, the domain name resolution Server 101 may be a DNS Server, such as a Global Server Load Balancing (GSLB) Server.

Specifically, after receiving the target domain name sent by the control device 100, the domain name resolution server 101 performs domain name resolution on the target domain name to obtain a corresponding target IP address, and returns the target IP address to the control device 100.

Each of the service servers 102: and is configured to provide the control device 100 with the requested service, i.e., the service response message, when in the normal load state, and redirect the target domain name when in the overload state, so that the control device 100 can be provided with the service access service through the other service server 102.

Specifically, after receiving a service request message sent by the control device 100, the service server 102 returns a service response message to the control device 100 if the current state is a normal load state, and otherwise, redirects the target domain name to obtain redirection address information and returns the obtained redirection address information to the control device 100.

The redirection address information may be directly determined by the service server 102 for redirection of the target domain name, or may be determined by the service server 102 for redirection of the target domain name through the redirection server 103.

The redirect server 103: the device is used for redirecting the target domain name, obtaining a redirected IP address corresponding to the target domain name, and generating redirected address information based on the redirected IP address.

Specifically, after receiving the service request message transmitted by the service server 102, the redirect server 103 obtains the service IP addresses of the plurality of service servers 102 and corresponding real-time load information set for the target domain name, selects one IP address from the IP addresses as a redirect IP address according to the service IP address of each service server and the current load information, generates redirect address information based on the redirect IP address, and returns the redirect address information to the service server 102.

Alternatively, the redirect server 103 may employ a burst-through car (a name of a server or system for redirection). The redirection server 103 may store information such as an IP address and a domain name in a cloud storage or database manner, and may redirect a target domain name in a cloud computing manner.

Alternatively, the service server 102 may be an edge node (OC) used by the CDN network to provide content services.

The target domain name may correspond to a plurality of service IP addresses. The target IP address is used to identify the first server 1021, and thus, the control apparatus 100 can access the first server 1021 through the target IP. Since the first server 1021 can quickly provide the service access service for the control device 100 when in the normal load state, and cannot quickly provide the service access service for the control device 100 when in the overload state, the first server 1021 provides the access address of the second server 1022, that is, the redirection address information, for the control device 100 in a redirection manner when in the overload state, so that the control device 100 can send the service request message to the second server 1022 again through the redirection address information to provide the corresponding service access service for the control device 100 through the second server 1022.

Referring to fig. 2, a flowchart of an implementation of a method for service access provided by the present application is shown. With reference to fig. 1, a real-time flow of a service access method is specifically described, where the method specifically includes the following steps:

step 200: the control device sends a service access request message containing the target domain name to the first service server.

Specifically, the control device may perform the steps of:

s2001: and when the control equipment accesses the service, acquiring a target domain name in the service network link information to be accessed.

Specifically, an application program, such as a browser application program, for service access may be installed in the control device, and the service access may be a web page data request in a page browsing process. The service network link information may be a URL. The target domain name may be a domain name included in a URL of a web page that the user needs to access. The domain name is used to identify the electronic position of the device in the network.

For example, the control device is a mobile phone, and when a user requests to access a qq page through a browser in the mobile phone, the mobile phone obtains a target domain name included in a URL of the qq page, that is, www.qq.com.

S2002: the control device sends a resolution request message containing the target domain name to the domain name resolution server.

Specifically, the domain name resolution server may be a DNS server.

In one embodiment, the control device acquires a URL of a page to be accessed, acquires a target domain name included in the URL, and sends an analysis request message including the target domain name to the DNS server.

S2003: and the domain name resolution server receives the resolution request message and acquires the target domain name contained in the resolution request message.

S2004: and the domain name resolution server resolves the target domain name to obtain a target IP address corresponding to the target domain name.

Specifically, the domain name resolution server obtains an IP address list set for a target domain name, and selects a service IP address from the IP address list as a target IP address.

In one embodiment, the domain name resolution server obtains the device IP address of the control device based on the received resolution request message, determines the network distance between the device IP address and each service IP address in the IP address list, and selects one service IP address from the IP address list as the target IP address according to each network distance.

For example, the target domain name is www.qq.com. The domain name resolution server resolves www.qq.com to obtain a target IP address of 1.1.1.1.

Wherein, according to each network distance, a service IP address is selected from the IP address list, and when the service IP address is used as a target IP address, the following steps can be adopted:

and determining the minimum network distance in the network distances, and taking the service IP address corresponding to the minimum network distance as a target IP address.

It should be noted that, the domain name resolution server pre-establishes a corresponding relationship between the domain name and the IP address list. In the domain name resolution server, the number of service IP addresses included in one IP address list is generally limited, and the maximum number of service IP addresses included in one service IP address list is generally 16. The service IP addresses are used for identifying the service servers, and each service IP address corresponds to one service server.

S2005: and the control equipment receives the target IP address returned by the domain name resolution server.

S2006: and the control equipment sends a service request message to a first service server corresponding to the target IP address based on the target IP address.

Specifically, the service request message is a message for requesting service data, and the service request message includes a target domain name and service resource identification information to be requested, such as a file name and a web page name.

Step 201: and when receiving the service request message sent by the control equipment, the first service server acquires the current load information.

In one embodiment, the first service server obtains its current system load after receiving the service request message.

The load information is used to measure the performance of the server, and may be a system load. The system load is a measure of the current CPU workload in the server, and refers to an average thread number in a running queue in a specific time period. The server load is typically high when large data requests are received or there is insufficient memory. The lower the load value, the better, the too high load may result in the server being unable to process other requests and operations, or even cause a crash.

Step 202: and if the current overload state is determined based on the load information, the first service server redirects the target domain name to obtain redirection address information corresponding to the target domain name.

Specifically, when step 202 is executed, the following steps may be adopted:

s2021: and the first service server determines whether the first service server is in an overload state currently according to the load information, if so, the step S2022 is executed, and if not, the step S2023 is executed.

In one embodiment, the first service server determines whether the system load is higher than a preset load threshold, if so, determines that the system load is currently in an overload state, otherwise, determines that the system load is currently in a normal load state.

S2022: the first service server redirects the target domain name to obtain redirected address information corresponding to the target domain name.

Specifically, when S2022 is executed, the following methods may be adopted:

the first mode is as follows: the first service server acquires a plurality of service IP addresses set aiming at the target domain name, selects one service IP address from all the service IP addresses as a redirection IP address, and generates redirection address information based on the redirection IP address.

In one embodiment, a first service server obtains a device IP address of a control device according to a service request message, obtains service IP addresses and real-time load information corresponding to service servers other than the first service server, which are set for a target domain name, respectively determines network distances between the device IP address and the obtained service IP addresses, selects one service IP address as a redirect IP address based on the obtained network distances and the real-time load information corresponding to the IP addresses, and determines corresponding redirect address information based on the redirect IP address.

The redirection address information is network link information including a redirection IP address, and the redirection address information may be determined according to the service request message and the redirection IP address, and may further include a transport protocol, identification information of a service resource to be accessed, and the like, which is not limited herein.

In one embodiment, the redirect address information may be a URL containing the redirect IP address.

In this way, the target domain name can be redirected through the first service server.

The second way is: the first service server redirects the service request message through the redirection server to obtain redirection address information.

In one embodiment, the first service server transparently transmits the service request message to the redirect server. The redirection server redirects the target domain name, obtains a redirection IP address corresponding to the target domain name, determines redirection address information according to the redirection IP address, and returns the redirection address information to the first service server. And the first service server receives the redirection address information returned by the redirection server.

When determining the redirection address information, the redirection server may perform the following steps:

according to the service request message, obtaining a device IP address of the control device, obtaining service IP addresses and real-time load information which are set for the target domain name and correspond to all the service servers except the first service server, respectively determining network distances between the device IP address and the obtained service IP addresses, selecting one service IP address as a redirection IP address based on the obtained network distances and the real-time load information corresponding to all the IP addresses, and determining corresponding redirection address information based on the redirection IP address.

The real-time load information is the current load information.

In one embodiment, a specified number of service servers closest to each network distance are screened out, and the service IP address of the service server with the smallest system load is selected from the screened out service servers as the redirection IP address.

When redirection is performed, the service IP addresses corresponding to the plurality of service servers corresponding to the target domain name can be obtained in real time, and the number of the obtained service IP addresses can be set according to an actual application scene, without setting an upper limit on the number of the obtained service IP addresses and without binding the domain name and the service IP addresses in advance.

Further, when determining the redirect IP address, the following steps may also be adopted:

according to the service request message, obtaining the equipment IP address of the control equipment, obtaining the service IP addresses of all service servers except the first service server set for the target domain name, respectively determining the network distance between the equipment IP address and each obtained service IP address, selecting one service IP address as a redirection IP address based on each obtained network distance, and determining corresponding redirection address information based on the redirection IP address.

Further, when determining the redirection IP address, the following steps may also be adopted:

and acquiring real-time load information of each service server, and selecting a service IP address of one service server as a redirection IP address according to the real-time load information of each service server.

In one embodiment, the current system load of each service server is obtained in real time, and the service IP address of the service server corresponding to the minimum system load in each system load is used as the redirection IP address.

In practical applications, the redirection IP address may also be determined in other manners, which is not limited herein.

For example, the redirection server obtains a service IP address set 1 corresponding to the target domain name 1, a service IP address set 2 corresponding to the target domain name 2, and a service IP address set 3 corresponding to the target domain name 3.

Further, in the redirection server, a corresponding IP address set may also be set for each domain name in advance. When determining that the service servers corresponding to the service IP addresses in the IP address set corresponding to the target domain name are all in an overload state, acquiring the service IP addresses corresponding to other service servers in real time to serve as the service IP addresses corresponding to the target domain name, thereby realizing the capacity expansion of the IP addresses corresponding to the single domain name.

It should be noted that the redirection IP address is a service IP address other than the target IP address, so that redirection can be implemented.

The redirection server may adopt a burst cut-through vehicle, and the redirection mode may adopt 302 redirection, which is not limited herein.

Therefore, the first service server can be used as transparent transmission proxy equipment, and the target domain name is redirected through the redirection server so as to schedule other service servers to provide service access service for the control equipment.

S2023: and if the first service server determines that the first service server is in a normal load state at present based on the load information, the first service server returns a service response message to the control equipment based on the service request message.

In this way, the first service server directly provides the corresponding service content service, such as the requested web page data, for the control device when the load is small.

Step 203: and the first service server returns the redirection address information to the control equipment.

Step 204: and the control equipment sends the service request message to a corresponding second service server based on the received redirection address information.

Specifically, the redirection address information may be determined based on the redirection IP address and the service request message, and the control device generates a new service request message according to the redirection address information and sends the new service request message to the second service server.

In one embodiment, the service request message includes a first URL, where the first URL includes a target domain name, and may further include a transmission protocol and identification information of a service resource to be accessed. And the redirection server acquires a redirection IP address corresponding to the target domain name, replaces the target domain name in the first URL with the redirection IP address, and acquires a second URL as redirection address information. And the control equipment generates a new service request message based on the second URL and sends the new service request message to the second service server.

In one embodiment, a Follow (Follow)302 application is provided in the control device and receives redirect address information forwarded by the first traffic server via Follow 302.

Further, the second service server returns a corresponding service response message to the control device according to the received service request message.

In one embodiment, the service request message further includes path information of the service resource identification information, and the second service server obtains corresponding service content according to the path information and the service resource identification information in the service request message, and returns the obtained service content to the control device.

And the control equipment receives a service response message returned by the second service server.

For example, a browser application is installed in the control device, and the browser application acquires the web page data in the received service response message, and displays the corresponding web page based on the acquired web page data.

Further, if the second service server is also in an overload state, the steps 202 to 204 may be further performed in a loop until the service server in a normal load state is determined, and then the determined service server provides the service access service for the control device.

Fig. 3 is a schematic diagram of a burst flow curve. The abscissa is time in minutes, e.g., 02:00, 04:00, 06:00, and 08:00, No. 6.27. The ordinate is the flow rate in Tbps (mega bits per second), e.g., 5Tbps, 10Tbps, and 15 Tbps. The first curve represents the traffic change of a single domain name (i.e., one domain name) in a traffic burst, and the second curve represents the traffic change of a single domain name in a normal state of the traffic. In a service burst test application scene, each service server is scheduled by adopting the service access scheme in the application, so that the burst resource adjustment period is shortened to several hours from the original several days, the service burst capacity is increased to 30T + level from the original 10T level, and the service access efficiency is greatly improved.

In the embodiment of the application, the method and the device can be applied to distributed network service products such as application file downloading, streaming media on demand and the like, can accurately and flexibly perform resource scheduling and load balancing, can guarantee system stability in a service burst scene, simultaneously give consideration to service quality, and greatly improve user experience.

For example, the requirements for CDN traffic burst handling are: in a sudden traffic, tens of times of bandwidth resources in a normal state need to be prepared, and a change in bandwidth needs to be quickly responded (for example, a bandwidth change rate is hundreds of G/min), so that a local high load is avoided, the quality of service is not affected, capacity expansion is required to be quickly and smoothly performed (for example, a data query rate of millions/s is supported), and a large number of service servers can be quickly scheduled. The embodiment of the application can be applied to an application file downloading scene of the CDN, the DNS server is preferentially adopted for domain name scheduling when the application file downloading scene is in a normal service scene, and the service request message to the service server in an overload state is redirected to other low-load service servers when the application file downloading scene is in a service burst scene, so that the load balance of each service server is realized, and the quality of other non-burst services is ensured while the stability of burst services is ensured.

When a DNS server is adopted to schedule service servers, interval TTL scheduling is needed to be effective, and domain names and a limited number of service IP addresses are bound in advance, so that the scheduling efficiency of the service servers is low, the adjustable capacity of the service servers is limited, and when the data access volume is increased sharply, burst bandwidth usually runs over the upper limit of a link in TTL, namely, part of the service servers are fully loaded, the load of each service server is difficult to balance, service requests of users cannot be responded in time, and the service quality is seriously influenced. If redirection is added to each domain name once, delay is increased, service processing efficiency is reduced, and when service bursts are frequent, scheduling policies are frequently switched, and service quality and stability are seriously reduced.

In the embodiment of the application, a mixed scheduling mode combining domain name scheduling and redirection scheduling is adopted, redirection is used as supplement of DNS analysis, namely, a first service server is obtained by analyzing through a DNS server, and only when the first service server is in an overload state, the redirection is carried out to a second service server, so that each service server is scheduled according to the load information of each service server and the network distance between control equipment and each service server, the problems of slow effectiveness of scheduling decisions, limited number of adjustable service servers, slow capacity expansion speed of the service servers, frequent switching of scheduling modes and poor system stability in a service burst scene in the traditional scheduling mode are solved, the load balance among the service servers is realized, the service access efficiency, the service quality and stability are improved, and the switching frequency of the scheduling mode is reduced, the service access of the user can be responded in time, and the user experience is improved. The method is mainly applied to a service burst scene, namely a scene of sudden increase of data access amount and downloading of a large-bandwidth service, can ensure continuous high-speed downloading in a burst process, cannot cause high load of a service server in a local area due to burst, and improves the downloading success rate and the downloading speed.

Referring to fig. 4, a detailed implementation flowchart of a method for service access is shown, and the specific flow of the method is as follows:

step 401: when the control equipment accesses the service, the control equipment acquires a target domain name in the service network link information to be accessed and sends an analysis request message containing the target domain name to a domain name analysis server.

Step 402: and the domain name resolution server receives the resolution request message and acquires the target domain name contained in the resolution request message.

Step 403: and the domain name resolution server resolves the target domain name to obtain a target IP address corresponding to the target domain name.

Step 404: and the control equipment receives the target IP address returned by the domain name resolution server.

Step 405: and the control equipment sends a service request message to a first service server corresponding to the target IP address based on the target IP address.

Step 406: and when receiving the service request message sent by the control equipment, the first service server acquires the current load information.

Step 407: the first service server determines whether the first service server is currently in an overload state according to the load information, if so, step 408 is executed, otherwise, step 413 is executed.

Step 408: the first service server transparently transmits the service request message to the redirection server in a transparent transmission mode.

Step 409: the redirection server redirects the target domain name to obtain a redirection IP address corresponding to the target domain name, and determines redirection address information according to the redirection IP address.

Step 410: and the first service server receives the redirection address information returned by the redirection server and returns the redirection address information to the control equipment.

Step 411: and the control equipment sends the service request message to a corresponding second service server based on the received redirection address information.

Step 412: and the second service server returns a corresponding service response message to the control equipment according to the received service request message.

Step 413: and the first service server returns a service response message to the control equipment based on the service request message.

Specifically, when step 401 to step 413 are executed, the specific steps are referred to as step 200 to step 204, which are not described herein again.

Referring to fig. 5, an interactive flowchart of a method for service access is shown, and the specific flow of the method is as follows:

step 501: and the control equipment sends the target domain name to a domain name resolution server.

Specifically, when the control device performs service access, the control device obtains a target domain name in the service network link information to be accessed, and sends an analysis request message containing the target domain name to the domain name analysis server.

Step 502: and the domain name resolution server resolves the target domain name to obtain a target IP address.

Specifically, the domain name resolution server receives the resolution request message, obtains a target domain name included in the resolution request message, and resolves the target domain name to obtain a target IP address corresponding to the target domain name.

Step 503: and the domain name resolution server returns the target IP address to the control equipment.

Step 504: and the control equipment sends a service request message to the first service server.

Specifically, the control device sends a service request message to a first service server corresponding to a target IP address based on the target IP address.

Step 505: the first service server obtains the current load state.

Specifically, when receiving a service request message sent by the control device, the first service server obtains current load information, and determines a current load state according to the load information.

Step 506: and the first service server determines that the first service server is in a normal load state, and returns a service response message to the control equipment.

Step 507: and the first service server determines that the first service server is in an overload state, and transmits the service request message to the redirection server.

Specifically, the first service server determines that the first service server is currently in an overload state according to the load information, and transparently transmits the service request message to the redirection server in a transparent transmission mode.

Step 508: and the redirection server redirects the target domain name to obtain redirection address information.

Specifically, the redirection server redirects the target domain name to obtain a redirection IP address corresponding to the target domain name, and determines redirection address information according to the redirection IP address.

Step 509: and the redirection server returns the redirection address information to the control equipment through the first service server.

Specifically, the first service server receives redirection address information returned by the redirection server, and returns the redirection address information to the control device.

Step 510: and the control equipment sends the service request message to the second service server.

Specifically, the control device sends the service request message to the corresponding second service server based on the received redirection address information.

Step 511: and the second service server returns a service response message to the control equipment.

Specifically, the second service server returns a corresponding service response message to the control device according to the received service request message.

Specifically, when step 501 to step 511 are executed, the specific steps refer to step 200 to step 204, which are not described herein again.

Based on the same inventive concept, the embodiment of the present application further provides a device for service access, and because the principle of the device and the apparatus for solving the problem is similar to that of a method for service access, the implementation of the device can refer to the implementation of the method, and repeated details are not described again.

Fig. 6 is a schematic structural diagram of a device for service access according to an embodiment of the present application. An apparatus for service access comprising:

a receiving unit 601, configured to obtain current load information when receiving a service request message sent by a control device, where the service request message at least includes a target domain name associated with a first service server;

an obtaining unit 602, configured to, if it is determined that the current domain name is in an overload state based on the load information, redirect the target domain name, and obtain redirection address information corresponding to the target domain name;

a returning unit 603, configured to return the redirection address information to the control device, so that the control device sends the service request message to the corresponding second service server based on the redirection address information.

Preferably, the service request message is sent to the first service server by the control device based on a target internet protocol IP address obtained by domain name resolution after performing domain name resolution on the target domain name through the domain name resolution server.

Preferably, the obtaining unit 602 is further configured to:

and if the current load state is determined to be in the normal load state based on the load information, returning a service response message to the control equipment based on the service request message.

Preferably, the obtaining unit 602 is configured to;

acquiring an equipment IP address of the control equipment according to the service request message;

acquiring service IP addresses and real-time load information which are set aiming at a target domain name and correspond to all service servers except a first service server;

respectively determining the network distance between the equipment IP address and each obtained service IP address;

selecting a service IP address as a redirection IP address based on the obtained network distance and real-time load information corresponding to each service IP address;

based on the redirect IP address, corresponding redirect address information is determined.

Preferably, the obtaining unit 602 is configured to;

the method comprises the following steps of transmitting a service request message to a redirection server in a transparent transmission mode, so that the redirection server executes the following steps: redirecting the target domain name to obtain a redirected IP address corresponding to the target domain name, and determining redirected address information according to the redirected IP address;

and receiving the redirection address information returned by the redirection server.

In the method and the device for service access provided by the embodiment of the application, after the control device performs domain name resolution on the target domain name, the control device sends a service request message to the first service server according to a domain name resolution result. After receiving the service request message, if the first service server determines that the first service server is currently in an overload state, the first service server redirects the target domain name and returns the obtained redirection address information to the control equipment, so that the control equipment sends the service request message to the corresponding second service server based on the redirection address information. Therefore, each service server can be rapidly scheduled according to the current load state of each service server, the load balance of each service server is realized, and the service quality is improved.

Fig. 7 shows a schematic configuration of a control device 7000. Referring to fig. 7, the control apparatus 7000 includes: a processor 7010, a memory 7020, a power supply 7030, a display unit 7040, and an input unit 7070.

The processor 7010 is a control center of the control apparatus 7000, connects the respective components by using various interfaces and lines, and executes various functions of the control apparatus 7000 by running or executing software programs and/or data stored in the memory 7020, thereby monitoring the control apparatus 7000 as a whole.

In an embodiment of the application, the processor 7010, when calling a computer program stored in the memory 7020, performs the method of service access provided by the embodiment shown in fig. 2.

Optionally, the processor 7010 may include one or more processing units; preferably, the processor 7010 may integrate an application processor, which handles primarily the operating system, user interfaces, applications, etc., and a modem processor, which handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 7010. In some embodiments, the processor, memory, and memory may be implemented on a single chip, or in some embodiments, they may be implemented separately on separate chips.

The memory 7020 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, various applications, and the like; the stored data area may store data created from the use of the control device 7000 and the like. In addition, the memory 7020 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The control device 7000 also includes a power supply 7030 (e.g., a battery) for powering the various components, which may be logically coupled to the processor 7010 via a power management system that may be used to manage charging, discharging, and power consumption.

Display unit 7040 may be configured to display information input by a user or information provided to the user, and various menus of control apparatus 7000, and the like, and in the embodiment of the present invention, is mainly configured to display a display interface of each application in control apparatus 7000, and objects such as texts and pictures displayed in the display interface. The display unit 7040 may include a display panel 7041. The Display panel 7041 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The input unit 7070 may be used to receive information such as numbers or characters input by a user. The input unit 7070 may include a touch panel 7051 and other input devices 7052. Among other things, the touch panel 7051, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 7051 (e.g., operations by a user on or near the touch panel 7051 using any suitable object or attachment such as a finger, a stylus, etc.).

Specifically, the touch panel 7051 may detect a touch operation of a user, detect signals generated by the touch operation, convert the signals into touch point coordinates, transmit the touch point coordinates to the processor 7010, receive a command transmitted from the processor 7010, and execute the command. In addition, the touch panel 7051 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. Other input devices 7052 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, power on/off keys, etc.), a trackball, a mouse, a joystick, and the like.

Of course, the touch panel 7051 may cover the display panel 7041, and when the touch panel 7051 detects a touch operation on or near the touch panel 7051, the touch operation is transmitted to the processor 7010 to determine the type of the touch event, and then the processor 7010 provides a corresponding visual output on the display panel 7041 according to the type of the touch event. Although in fig. 7, the touch panel 7051 and the display panel 7041 are shown as two separate components to implement the input and output functions of the control device 7000, in some embodiments, the touch panel 7051 and the display panel 7041 may be integrated to implement the input and output functions of the control device 7000.

The control device 7000 may also comprise one or more sensors, such as a pressure sensor, a gravitational acceleration sensor, a proximity light sensor, etc. Of course, the control device 7000 may also comprise other components such as a camera, which are not shown in fig. 7 and will not be described in detail, since they are not components used in the embodiments of the present application.

Those skilled in the art will appreciate that fig. 7 is merely an example of a control device and is not intended to be limiting and may include more or less components than those shown, or some components in combination, or different components.

Those of ordinary skill in the art will understand that: all or part of the steps of implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer-readable storage medium, and when executed, executes the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be substantially implemented or portions thereof that contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.

Embodiments of the present application also provide a computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and executes the computer instructions, so that the computer device executes the method for controlling service access in any of the method embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a general hardware platform, and may also be implemented by hardware. Based on such understanding, the technical solutions in essence or portions contributing to the related art may be embodied in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a control device (which may be a personal computer, a server, or a network device, etc.) to execute the method of various embodiments or some portions of embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.

Claims

1. A method for service access, applied to a first service server, includes:

when receiving a service request message sent by a control device, acquiring current load information, wherein the service request message at least comprises a target domain name associated with the first service server;

if the current overload state is determined based on the load information, the target domain name is redirected, and redirection address information corresponding to the target domain name is obtained;

and returning the redirection address information to the control equipment, so that the control equipment sends the service request message to a corresponding second service server based on the redirection address information.

2. The method of claim 1, wherein the service request message is sent to the first service server by the control device based on a target internet protocol IP address obtained by domain name resolution after performing domain name resolution on the target domain name through a domain name resolution server.

3. The method of claim 1, further comprising:

and if the current load state is determined to be in a normal load state based on the load information, returning a service response message to the control equipment based on the service request message.

4. The method according to any one of claims 1 to 3, wherein performing redirection for the target domain name, and obtaining redirection address information corresponding to the target domain name includes:

acquiring the equipment IP address of the control equipment according to the service request message;

acquiring service IP addresses and real-time load information which are set aiming at the target domain name and correspond to all service servers except the first service server;

based on the redirection IP address, corresponding redirection address information is determined.

5. The method of claim 3, wherein redirecting the target domain name to obtain redirection address information corresponding to the target domain name comprises:

and transparently transmitting the service request message to a redirection server in a transparent transmission mode, so that the redirection server executes the following steps: redirecting the target domain name to obtain a redirected IP address corresponding to the target domain name, and determining redirected address information according to the redirected IP address;

and receiving redirection address information returned by the redirection server.

6. An apparatus for service access, comprising:

a receiving unit, configured to obtain current load information when receiving a service request message sent by a control device, where the service request message at least includes a target domain name associated with the first service server;

an obtaining unit, configured to, if it is determined that the current domain name is in an overload state based on the load information, redirect the target domain name to obtain redirection address information corresponding to the target domain name;

and a returning unit, configured to return the redirection address information to the control device, so that the control device sends the service request message to a corresponding second service server based on the redirection address information.

7. The apparatus of claim 6, wherein the service request message is sent to the first service server by the control device based on a target Internet Protocol (IP) address obtained by domain name resolution after performing domain name resolution on the target domain name through a domain name resolution server.

8. The apparatus of claim 6, wherein the obtaining unit is further to:

9. The apparatus according to any of claims 6-8, wherein the obtaining unit is configured to;

and determining corresponding redirection address information based on the redirection IP address.

10. The apparatus of claim 8, wherein the obtaining unit is to;

and transparently transmitting the service request message to a redirection server by adopting a transparent transmission mode, so that the redirection server executes the following steps: redirecting the target domain name to obtain a redirected IP address corresponding to the target domain name, and determining redirected address information according to the redirected IP address;