CN110602193A - Service discovery method and system - Google Patents
Service discovery method and system Download PDFInfo
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- CN110602193A CN110602193A CN201910820548.3A CN201910820548A CN110602193A CN 110602193 A CN110602193 A CN 110602193A CN 201910820548 A CN201910820548 A CN 201910820548A CN 110602193 A CN110602193 A CN 110602193A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
Abstract
The embodiment of the invention provides a service discovery method and a system, wherein the method comprises the following steps: receiving a request with waiting time, which is initiated to the distributed consistent storage service by a service consumption end; monitoring whether a service information list of the distributed consistent storage service is updated or not; and in the waiting time, when the monitored service information list is updated, the distributed consistent storage service responds to the request and returns the updated service information list. The technical scheme not only ensures the perception sensitivity of the service consumption end to the monitoring service, but also avoids the excessively frequent request to the distributed consistent storage service, and saves the network overhead and the consumption of a CPU.
Description
Technical Field
The invention belongs to the field of micro-services, and particularly relates to a service discovery method and a service discovery system.
Background
While many internet companies continue to scale with business, the code size continues to increase. In order to better support company business, improve resource utilization, and increase code maintainability, the micro-service architecture will become the first choice of many companies. However, when many projects are split into multiple single-function services, new challenges are brought about. First, the splitting of services can rapidly expand the number of services, and the large number of services increases the operation and maintenance cost. Secondly, as the micro-service pursues rapid deployment and expansion of the service, ip and ports of a single service may change at any time, and the number of nodes of the service also changes dynamically, thus increasing the difficulty in calling between services.
In such a context, many schemes such as service registration and service discovery are in force. The core idea is to provide a single distributed consistent storage service, register the information of the ip, the port and the like of the service in the distributed consistent storage service when the service is started, remove the service from the distributed consistent storage service when the node of the service is down, acquire the available node information of the service from the distributed consistent storage when other services call the service, and then select one to call.
Open source products for service registration and service discovery in the market at present mainly include zookeeper, consul, etcd and the like. They mainly provide distributed coherent storage functionality.
Although the problem of dependence among a large number of services can be basically solved according to a general service registration and service discovery mode, if a service consumer requests a distributed consistent storage to acquire a service information list every time the service is consumed, additional network overhead is added to the current business process, the response speed of the service is inevitably reduced, and if the request link is long, performance is lost at each level, and finally the response of one process is very slow.
To address this problem, a more solution currently used in the industry is to enable a thread on a service consuming side, periodically pull available list information of services consumed by the service consuming side, and then cache the information. Therefore, when a service request comes, the service information needing to be called is directly obtained from the local cache without requesting the distributed consistency storage to obtain the service information list.
However, although this scheme of updating the cache periodically can ensure that the performance of the business process is not lost, the sensitivity of the service consumption end to the available list of the services consumed by the service consumption end is reduced if the cache is periodically performed. That is, if a service consumer pulls an available list of a service and caches the service periodically, and if a node of the service goes down and a cache of the service consumer does not expire yet, the service consumer may send a request to the node that has gone down, thereby causing a failure of the request.
Then, it may be thought to increase the sensitivity of service perception by reducing the buffering time of the service information list. This is certainly effective, but if the cache time is too short, frequent requests to the distributed coherent storage service to obtain the service information list will be caused, and in fact, in most cases, the service information list is not changed, which not only causes many unnecessary requests but also increases the cost of the CPU. More importantly, even if the service caching time is reduced, in extreme cases there may be instances where the service consumer sends a request to a node that has been down.
Disclosure of Invention
The embodiment of the invention provides a service discovery method and a service discovery system, which not only ensure the perception sensitivity of a service consumer to a monitoring service, but also avoid too frequent requests for distributed consistent storage service, and save network overhead and CPU consumption.
To achieve the above object, in one aspect, an embodiment of the present invention provides a service discovery method, where the method includes:
receiving a request with waiting time, which is initiated to the distributed consistent storage service by a service consumption end;
monitoring whether a service information list of the distributed consistent storage service is updated or not;
and in the waiting time, when the monitored service information list is updated, the distributed consistent storage service responds to the request and returns the updated service information list.
In another aspect, an embodiment of the present invention provides a service discovery system, where the system includes:
the service request unit is used for receiving a request with waiting time, which is initiated to the distributed consistent storage service by a service consumption end;
the list monitoring unit is used for monitoring whether a service information list of the distributed consistency storage service is updated or not;
and the request response unit is used for responding the request and returning the updated service information list by the distributed consistent storage service when the monitored service information list is updated in the waiting time.
The technical scheme has the following beneficial effects:
the technical scheme of the invention adopts a mode of adding polling to the request with waiting time to solve the problem of service perception, thereby not only ensuring the perception sensitivity of a service consumption end to the monitoring service, but also avoiding the too frequent request to the distributed consistent storage service, and saving the network overhead and the consumption to a CPU. Has practical and effective significance for Internet micro-service.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a service discovery method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a service discovery system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the present invention is a flowchart of a service discovery method, where the method includes:
s101, receiving a request with waiting time, which is initiated to the distributed consistent storage service by a service consumption end;
s102, monitoring whether a service information list of the distributed consistency storage service is updated or not;
s103, in the waiting time, when the monitored service information list is updated, the distributed consistent storage service responds to the request and returns the updated service information list. Therefore, the perception sensitivity of the service consumption end to the monitoring service can be ensured, the too frequent request to the distributed consistent storage service is avoided, and the network overhead and the consumption to the CPU are saved.
Preferably, if the monitored service information list is not updated within the waiting time, the distributed consistent storage service does not respond to the request, and the request continues to wait until the set waiting time is reached, and then the connection is disconnected and the request is re-sent.
Preferably, operation interfaces with consistent interfaces are set for operations of adding, deleting, changing, searching, screening and monitoring of service information in the distributed consistent storage service. The writing (adding, deleting and changing) operation of the service information is used as the registration service of the service producer in the service registration, and the reading (inquiring, screening and monitoring) operation of the service information is used as the consumption service of the service consumer in the service registration. In short, the distributed consistent storage service acts as an intermediary between service producers and service consumers. There is a need to directly operate a distributed consistent storage service, whether it is a service producer registration service or a service consumer discovery service. The interface consistent operation interface described herein is a unified operation interface for the distributed consistent storage service.
Preferably, the service information includes a service name, a service agreement, a service IP, a service port, and a weight; and the service information is set to be a universal data structure and applied to the distributed consistent storage service.
Preferably, interface implementation of the operation interface corresponding to the service information is set for different distributed consistent storage services. The method has the advantages that the storage structure and operation of the service information in different distributed storage services are unified, and therefore switching can be carried out among different distributed consistent storage services on the premise that codes are not modified.
Corresponding to the above method, as shown in fig. 2, it is a schematic diagram of a service discovery system according to an embodiment of the present invention, where the system includes:
a service request unit 21, configured to receive a request with a waiting time, which is initiated by a service consumer to a distributed consistent storage service;
a list monitoring unit 22, configured to monitor whether a service information list of the distributed storage service is updated;
a request responding unit 23, configured to, in the waiting time, when the monitored service information list is updated, respond to the request by the distributed-type consistent storage service and return the updated service information list.
Preferably, the service request unit is further configured to: if the monitored service information list is not updated in the waiting time, the distributed consistent storage service does not respond to the request, and the request continues to wait until the set waiting time is reached, then the connection is disconnected and the request is re-sent.
Preferably, the mobile terminal further comprises a service information setting unit, configured to: and setting operation interfaces with consistent interfaces for the operations of adding, deleting, modifying, searching, screening and monitoring service information in the distributed consistent storage service.
Preferably, the service information includes a service name, a service agreement, a service IP, a service port, and a weight; and the service information setting unit is further configured to set the service information to be a common data structure and apply the common data structure to the distributed consistent storage service.
Preferably, the service information setting unit is further configured to: and setting interface implementation of an operation interface corresponding to the service information for different distributed consistent storage services.
According to the technical scheme of the application, the method comprises the following steps:
1. the method of using blocking query and polling perfectly ensures the sensitivity of service discovery and reduces the additional network and CPU overhead.
2. A layer of general service registration data structure and operation interface are abstracted, and migration among different distributed consistent storage services can be conveniently carried out.
3. By discovering a built-in load balancing strategy in service registration and service, an agent layer is not required to be added, the length of a service call link is reduced, and thus the loss is reduced; and the service registration and service discovery of the technical scheme support user customization and expansion.
4. The method has the advantages of existing in a middleware mode, being small and strong, being capable of being easily integrated into various web frameworks, and improving the use convenience.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
Those of skill in the art will further appreciate that the various illustrative logical blocks, units, and steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate the interchangeability of hardware and software, various illustrative components, elements, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.
The various illustrative logical blocks, or elements, described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be located in a user terminal. In the alternative, the processor and the storage medium may reside in different components in a user terminal.
In one or more exemplary designs, the functions described above in connection with the embodiments of the invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media that facilitate transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer. For example, such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store program code in the form of instructions or data structures and which can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Additionally, any connection is properly termed a computer-readable medium, and, thus, is included if the software is transmitted from a website, server, or other remote source via a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wirelessly, e.g., infrared, radio, and microwave. Such discs (disk) and disks (disc) include compact disks, laser disks, optical disks, DVDs, floppy disks and blu-ray disks where disks usually reproduce data magnetically, while disks usually reproduce data optically with lasers. Combinations of the above may also be included in the computer-readable medium.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for service discovery, the method comprising:
receiving a request with waiting time, which is initiated to the distributed consistent storage service by a service consumption end;
monitoring whether a service information list of the distributed consistent storage service is updated or not;
and in the waiting time, when the monitored service information list is updated, the distributed consistent storage service responds to the request and returns the updated service information list.
2. The service discovery method of claim 1 wherein if said monitored list of service information is not updated within said wait time, said distributed consistent storage service does not respond to said request, said request continues to wait until a set wait time is reached, disconnecting and re-initiating said request.
3. The service discovery method of claim 2 wherein the operations of adding, deleting, modifying, searching, screening and monitoring service information in the distributed consistent storage service are all configured with operation interfaces with consistent interfaces.
4. The service discovery method of claim 3 wherein said service information includes service name, service agreement, service IP, service port, and weight; and the service information is set to be a universal data structure and applied to the distributed consistent storage service.
5. The service discovery method of claim 4 wherein an interface implementation of an operation interface corresponding to service information is set for each of the different distributed coherent storage services.
6. A service discovery system, the system comprising:
the service request unit is used for receiving a request with waiting time, which is initiated to the distributed consistent storage service by a service consumption end;
the list monitoring unit is used for monitoring whether a service information list of the distributed consistency storage service is updated or not;
and the request response unit is used for responding the request and returning the updated service information list by the distributed consistent storage service when the monitored service information list is updated in the waiting time.
7. The service discovery system of claim 6 wherein said service request unit is further configured to:
if the monitored service information list is not updated in the waiting time, the distributed consistent storage service does not respond to the request, and the request continues to wait until the set waiting time is reached, then the connection is disconnected and the request is re-sent.
8. The service discovery system of claim 7, further comprising a service information setting unit for:
and setting operation interfaces with consistent interfaces for the operations of adding, deleting, modifying, searching, screening and monitoring service information in the distributed consistent storage service.
9. The service discovery system of claim 8 wherein said service information includes service name, service agreement, service IP, service port, and weight; and the number of the first and second electrodes,
the service information setting unit is further configured to set the service information to be a common data structure and apply the common data structure to the distributed uniform storage service.
10. The service discovery system of claim 9 wherein said service information setting unit is further configured to:
and setting interface implementation of an operation interface corresponding to the service information for different distributed consistent storage services.
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