KR20150137597A - Apparatus and method for sacling web service - Google Patents

Abstract

Disclosed are an apparatus and a method for scaling a web service. According to an embodiment of the present invention, the web service scaling apparatus comprises: a snap shot storage unit for storing a snap shot on a web server or a web application which provides a web service, and configuration information on the web service; and a scaling execution unit for loading the snap shot on the web service to a random server in response to scaling event occurrence for the web service, and extending the web service by setting the configuration information on the web service to the loaded snap shot.

Description

[0001] APPARATUS AND METHOD FOR SACLING WEB SERVICE [0002]

Embodiments of the present invention relate to web service scaling techniques in a cloud environment.

Cloud computing is an Internet-based computing technology. It is a web-based software service that uses programs on a utility data server on the Internet and brings them to computers and mobile phones when needed.

Recently, a scaling function has been provided in the cloud computing service to flexibly increase or decrease computing resources according to the load and usage of services.

The scaling function can be largely divided into automatic and manual. The autoscaling function manages load balancing by grouping multiple instances into a single group. Specifically, when a predefined condition occurs, for example, an average CPU utilization of 80% or more lasts for a preset time, the automatic scaling function is executed to read the same VM image used by the instance from the storage in the group Then add the instances automatically using the VM image and link them to the load balance.

However, since the conventional technology provides an automatic scaling function at the VM image level, there is a problem that scaling is not performed at the level of the web service. In other words, there is no web server, web application server, and web application, so there is a problem that scaling is not done at the level of web service.

In addition, when the conventional automatic scaling function is used, traffic may be sent to an instance created as a VM image without a web application installed, which may cause a failure.

Korean Patent Publication No. 10-2012-0000700 (2012.04.04)

Embodiments of the present invention are intended to provide an apparatus and method for scaling Web services in a cloud environment in which failure and time can be reduced when extending a Web service.

According to an exemplary embodiment of the present invention, a snapshot of a web server or a web application server providing a web service and a snapshot storage unit storing configuration information for the web service are stored. And loading a snapshot of the web service to a server in response to a scaling event for the web service, setting scaling information for the web service to the arbitrary server, There is provided a web service scaling apparatus including an execution unit.

In the web service scaling device, when the scaling execution unit receives the scaling event occurrence for the web service, the scaling execution unit requests the snapshot to the snapshot storage unit, and loads the snapshot received in response thereto into the arbitrary server Snapshot loading module; And a web service setting module for setting configuration information for the web service to any server loaded with the snapshot.

The web service scaling device further includes a snapshot generation unit for generating a snapshot and configuration information for the arbitrary web service in response to the snapshot creation request for the arbitrary web service and providing the generated snapshot and configuration information to the snapshot storage unit .

In the web service scaling device, the snapshot generation unit may include: a snapshot generation module that generates a snapshot of the web server or the web application server in which the arbitrary web service is implemented; And a web service configuration information search module for searching the topology of the web service or the configuration of the web server or the web application server to generate configuration information of the arbitrary web service.

In the web service scaling device, the snapshot creation request may be generated when a setting for the web server or the web application server providing the arbitrary web service is changed or an application is installed.

In the web service scaling device, the scaling event generation may be generated when the traffic for the web service exceeds a preset range or the throughput of the web server or the web application server that provides the web service exceeds a preset range .

In the web service scaling device, the configuration information may include a topology of the web service or environment setting information of a web server or a web application server that provides the web service.

In the web service scaling device, the snapshot storage unit may include a storage module for storing a snapshot of the web service and the configuration information; And a transmission module for providing the stored snapshot and the configuration information according to a request of the scaling execution unit.

The web service scaling device generates a snapshot of a web server or a web application server that implements the web service in response to a snapshot creation request for an arbitrary web service. The topology of the web service or the web A snapshot generation unit for searching configuration of a server or a web application server to generate configuration information of the arbitrary web service and storing the generated snapshot and the generated configuration information in the snapshot storage unit .

In the web service scaling device, the snapshot creation request may be generated when a setting for the web server or the web application server providing the arbitrary web service is changed or an application is installed.

In the web service scaling device, the scaling event generation may be generated when the traffic for the web service exceeds a preset range or the throughput of the web server or the web application server that provides the web service exceeds a preset range .

In the web service scaling device, the configuration information may include a topology of the web service or environment setting information of a web server or a web application server that provides the web service.

According to another exemplary embodiment of the present invention, there is provided a method for providing a web service, comprising: generating a snapshot of a web server or a web application server providing web service and configuration information for the web service; Loading a snapshot of the web service into a server when a scaling event for the web service is generated; And expanding the web service by setting configuration information for the web service in the arbitrary server.

Wherein the generating of the web service scaling method comprises: generating a snapshot of a web server or a web application server that implements the web service in response to a snapshot creation request for any web service; And searching the topology of the web service or the configuration information of the server providing the web service to generate the arbitrary web service configuration information and storing the generated web service configuration information in the snapshot storage unit.

In the web service scaling method, the generating may include changing the configuration of the web server or the web application server providing the arbitrary web service, changing the topology of the arbitrary web service, It can be executed when any application is installed.

In the web service scaling method, the loading step may be executed when the traffic for the web service exceeds a preset range or the throughput of the web server or the web application server that provides the web service exceeds a predetermined range.

In the web service scaling method, the configuration information may include information related to a topology of the web service or a configuration of a web server or a web application server providing the web service.

The computer program for executing the web service scaling method may be embodied in a computer-readable storage medium having stored thereon.

According to embodiments of the present invention, the time taken to expand the web service can be shortened by extending the web service using the snapshot of the web server or the web application server.

In addition, according to the embodiments of the present invention, since the web service is extended using the snapshot, the installation of the application for the web service can be omitted.

According to the embodiments of the present invention, it is possible to simultaneously install a web application required for a web service using a snapshot, thereby minimizing a failure occurring when expanding a web service.

1 is a block diagram illustrating a web service scaling apparatus and its peripheral configuration according to an embodiment of the present invention;
2 is a flow diagram illustrating a web service scaling method in accordance with an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to provide a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, this is merely an example and the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification. The terms used in the detailed description are intended only to describe embodiments of the invention and should in no way be limiting. Unless specifically stated otherwise, the singular forms of the expressions include plural forms of meanings. In this description, the expressions "comprising" or "comprising" are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, Should not be construed to preclude the presence or possibility of other features, numbers, steps, operations, elements, portions or combinations thereof.

1 is a block diagram illustrating a web service scaling apparatus 150 and its peripheral configuration according to an embodiment of the present invention.

As shown in FIG. 1, the web service scaling apparatus 150 may be linked with the external interface unit 100 to generate a snapshot or extend a web service using a snapshot.

The web service scaling apparatus 150 of FIG. 1 may generate a cloud server for a web service by using a snapshot in a cloud environment according to a preset condition or an external request.

In an embodiment of the present invention, the snapshot stores the current state of the memory, including all contents of memory bytes, hardware registers, status indicators, etc., and can be used for system recovery or expansion. In addition, the snapshot can copy the image of the data, not the whole data, so that the data at the time of the snapshot creation can be maintained. Specifically, the snapshot according to the embodiment of the present invention can be used for creating a virtual machine (VM) necessary for scaling (extension) of a web service, installing a web server or a web application server, . ≪ / RTI >

The snapshot-based web service scaling apparatus 150 according to an embodiment may operate according to a snapshot creation request or a scaling event occurrence of the external interface unit 100, as shown in FIG. The web service scaling apparatus 150 may include a snapshot generation unit 160, a snapshot storage unit 170, and a scaling execution unit 180.

The snapshot creation request of the external interface unit 100 is for creating a snapshot and can be generated by an administrator or an external user.

In addition, the snapshot creation request may be automatically generated when the setting of the web server or the web application server providing the web service is changed, and may be provided to the web service scaling device 150 according to the embodiment of the present invention.

The scaling event occurrence of the external interface unit 100 is for causing a web service to be scaled using a snapshot and may be generated according to a request of an administrator or an external user or may be generated according to predetermined conditions. In one embodiment of the present invention, the condition of generating the scaling event may be a load in the system environment providing the web service, such as CPU load, network traffic load. In other words, a scaling event may be generated if the load of the system environment lasts for a predetermined time or more than a predetermined value.

The snapshot generating unit 160 may generate a snapshot of the web server or the web application server providing the web service. To this end, the snapshot generation unit 160 may include a snapshot generation module 162 and a web service configuration information search module 164.

The snapshot generation module 162 can generate a snapshot of the web server or the web application server according to the snapshot creation request. Specifically, the snapshot generation module 162 can generate a snapshot based on the current state of the memory for the web server or the web application server.

The web service configuration information retrieval module 164 can generate the web service configuration information by checking the topology of the web service provided by the web server or the web application server and the configuration of the web server or the web application server.

The snapshot generation unit 160 may provide the snapshot generated by the snapshot generation module 162 and the web service configuration information generated by the web service configuration information retrieval module 164 to the snapshot storage unit 170 .

The snapshot storage unit 170 stores the snapshot and the web service configuration information, and may transmit the snapshot and the web service configuration information in response to the request of the scaling execution unit 180.

In one embodiment of the present invention, the snapshot repository 170 may comprise a storage module 172 and a transmission module 174.

The storage module 172 can store and manage snapshot and web service configuration information for an arbitrary web server or web application server through interoperation with the snapshot generation unit 160. [

The transmission module 174 may provide the snapshot and the web service configuration information stored in the storage module 172 to the scaling execution unit 180 in cooperation with the scaling execution unit 180. [

The scaling execution unit 180 loads the snapshot in response to the scaling event from the external interface unit 100 to an arbitrary server for expanding the web service and then sets the web service configuration information to any server loaded with the snapshot To extend the Web service.

In one embodiment of the present invention, any server may be a physical device such as a computer providing a web service in a cloud environment, or may be a virtualization server capable of providing web services.

In one embodiment of the present invention, the scaling execution unit 180 may be configured with a snapshot loading module 182 and a web service setting module 184.

The snapshot loading module 182 requests the snapshot storage unit 170 to receive the snapshot from the sending module 174 and loads the received snapshot into the cloud server for the web service extension.

The web service setting module 184 requests the snapshot storage unit 170 to receive the web service configuration information from the sending module 174 and sets the web service configuration information in the cloud server loaded with the snapshot, Can be scaled.

As described above, the web service scaling apparatus 100 according to the embodiment of the present invention loads a snapshot into an arbitrary server, creates an arbitrary server in a state where an application necessary for the web service is installed and executed, By applying topology and environment setting information, it is possible to expand a web service in a cloud environment by making any server into a state in which a web service can be implemented. That is, in the case of using the virtual image, the process of installing the application for the web service and setting the environment setting and the topology according to the installation is manually performed. However, the web service scale device of the present invention is not limited to the snapshot, Can be used to automatically extend the Web service without installing or configuring a separate application.

The web service scaling method 200 of the web service scaling apparatus 150 having the above configuration will be described with reference to FIG.

FIG. 2 is a flow diagram illustrating a Web service scaling method 200 of a Web services scaling device 150 according to an embodiment of the present invention.

The web service scaling method 200 shown in FIG. 2 may be performed, for example, by the scaling execution unit 180 described above. In the illustrated flow chart, the method is described as being divided into a plurality of steps, but at least some of the steps may be performed in reverse order, combined with other steps, performed together, omitted, divided into detailed steps, One or more steps may be added and performed. Also, one or more steps not shown in FIG. 2 may be performed with the method shown in FIG. 2, depending on the embodiment.

The web service scaling method 200 may be composed of a snapshot generation part 210 and a web service extension part 220, as shown in FIG.

First, the snapshot creation part 210 will be described. When a snapshot creation request for the web service is received from the external interface part 100 (step 212), the snapshot creation part 160 provides a web service Generates a snapshot of the web server or web application server, generates the web service configuration information by retrieving the topology and configuration information of the web service provided by the web server or the web application server, To the snapshot storage unit 170 (step 214).

Next, a description will be made of the web service extension part 220. When a scaling event is generated from the external interface part 100 (step 222), the scaling execution part 180 obtains a snapshot of the web service, In the snapshot storage unit 170 (step 224).

Then, the scaling execution unit 180 loads the snapshot into the cloud server (step 226), applies the configuration information for the web service to the cloud server using the web service configuration information, (Step 228). Accordingly, the cloud server can provide web services with other servers in a cloud computing environment.

On the other hand, embodiments of the present invention may include a computer readable medium including a program for performing the methods described herein, i.e., the web service scaling method 200, on a computer. The computer-readable recording medium may include a program command, a local data file, a local data structure, or the like, alone or in combination. The media may be those specially designed and constructed for the present invention, or may be those that are commonly used in the field of computer software. Examples of computer readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floppy disks, and magnetic media such as ROMs, And hardware devices specifically configured to store and execute program instructions. Examples of program instructions may include machine language code such as those generated by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, . Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: External interface unit
150: Web service scaling device
160: Snapshot generation unit
162: Snapshot generation module
164: Web service configuration information retrieval module
170: Snapshot storage
172: storage module
174: Transmission module
180: scaling execution unit
182: Snapshot loading module
184: Web service configuration module

Claims (14)

A snapshot storage unit for storing a snapshot of a web server or a web application server providing the web service and configuration information for the web service; And
A snapshot of the web service is loaded into a server in response to the occurrence of a scaling event for the web service, and the configuration information for the web service is set in the arbitrary server, And a Web service scaling unit.
The method according to claim 1,
The scaling execution unit
A snapshot loading module that receives the scaling event for the web service and requests the snapshot to the snapshot storage and loads the received snapshot into the arbitrary server in response to the request; And
And a web service configuration module for setting configuration information for the web service to any server loaded with the snapshot.
The method according to claim 1,
The web service scaling device
Further comprising a snapshot generation unit for generating a snapshot and configuration information for the arbitrary web service in response to the snapshot creation request for the arbitrary web service and providing the snapshot and the configuration information to the snapshot storage unit.
The method of claim 3,
The snapshot generation unit
A snapshot generation module for generating a snapshot of the web server or the web application server in which the arbitrary web service is implemented; And
And a web service configuration information search module for searching the topology of the arbitrary web service or the configuration of the web server or the web application server to generate configuration information of the arbitrary web service.
The method of claim 3,
Wherein the snapshot creation request is generated when a setting for the web server or the web application server providing the arbitrary web service is changed or an application is installed.
The method according to claim 1,
Wherein the scaling event generation is generated when the traffic for the web service exceeds a predetermined range or the throughput of the web server or the web application server providing the web service exceeds a preset range.
The method according to claim 1,
Wherein the configuration information includes a topology of the web service or configuration information of the web server or the web application server providing the web service.
The method according to claim 1,
The snapshot storage unit
A storage module for storing a snapshot of the web service and the configuration information; And
And a transmission module for providing the stored snapshot and the configuration information according to a request of the scaling execution unit.
Generating a snapshot of a web server or a web application server providing web service and configuration information for the web service;
Loading a snapshot of the web service into a server when a scaling event for the web service is generated; And
And setting the configuration information for the web service to the arbitrary server to expand the web service.
10. The method of claim 9,
The generating step
Generating a snapshot of a web server or a web application server that implements the arbitrary web service in response to a snapshot creation request for the arbitrary web service; And
Searching the topology of the arbitrary web service or the configuration information of the server providing the web service to generate the arbitrary web service configuration information and storing the generated web service configuration information in the snapshot storage unit.
11. The method of claim 10,
The generating may include changing the configuration of the web server or the web application server providing the arbitrary web service, changing the topology of the arbitrary web service, or installing an arbitrary application in the web server or the web application server When executed, a Web service scaling method.
10. The method of claim 9,
Wherein the loading is performed when the traffic for the web service exceeds a predetermined range or when the throughput of the web server or the web application server providing the web service exceeds a preset range.
10. The method of claim 9,
Wherein the configuration information includes a topology of the web service or environment setting information of the web server or the web application server providing the web service.
12. A computer-readable storage medium having stored thereon a computer program for executing the method recited in any one of claims 9 to 11.

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