Systems and methods for caching of managed content in a distributed environment using a multi-tiered architecture including off-line access to cached content

• US 10,250,710 B2
• Filed: 02/16/2017
• Issued: 04/02/2019
• Est. Priority Date: 04/10/2015
• Status: Active Grant

• Current Assignee: Crowdstrike, Inc. (CrowdStrike Holdings Incorporated)
• Original Assignee: Open Text Sa Ulc (Open Text Corporation)
• Inventors: Ionescu, Nicolae, Trufaisu, Dan-Horia, Varga, Peter, Zhou, Tao, Pauthner, Franz, Wong, Yue Kuk
• Primary Examiner(s): Williams, Clayton R
• Application Number:
  US15/434,235
• Publication Number:
  US 20170161293A1
• Time in Patent Office: 775 Days
• CPC Class Codes: G06F 16/172 Caching, prefetching or hoarding of files
• CPC Class Codes: G06F 16/173 Customisation support for file systems, e.g. localisation, multi-language support, personalisation
• CPC Class Codes: G06F 16/2329 using versioning
• CPC Class Codes: G06F 16/2474 Sequence data queries, e.g. querying versioned data
• CPC Class Codes: H04L 67/1097 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]
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching

Abstract

Embodiments as disclosed provide a distributed caching solution that improve the performance and functionality of a content management platform for sites that are physically or logically remote from the primary site of the content management platform. In particular, according to embodiments, a remote cache server may be associated with a remote site to store local copies of documents that are managed by the primary content management platform. Periodically, a portion of the remote site'"'"'s cache may be synchronized with the content management platform'"'"'s primary site using an extensible architecture to ensure that content at the remote cache server is current.

Claims

1. A system for remote caching, comprising:

a processor;

a primary content management server for managing content;

a remote cache system, including;

a cache;

an interface to a network;

a data store for storing metadata corresponding to content stored in the cache, wherein the content in cache is managed by the primary content management server; and

a remote client transfer module, configured for;

accessing the data store to determine if first metadata associated with designated content is stored in the data store;

sending a first request to a primary content transfer module associated with the primary content management server;

receiving a first response from the primary content transfer module including second metadata;

if first metadata associated with the designated content is stored in the data store;

comparing the first metadata to the second metadata to determine if a version of the content stored in the cache is a current version of the content;

if the version of the content stored in the cache is a current version, setting a flag in the first metadata to designate the content as resident;

if the version of the content stored in the cache is not the current version or if no first metadata associated with the designated content is stored in the data store;

sending a second request for the current version of the content to the primary content transfer module;

receiving the current version of the content;

storing the current version of the content in the cache; and

setting a flag in the first metadata to designate the content as resident;

the primary content transfer module configured for;

 

receiving the first request associated with the content from the remote client transfer module;

 

sending a third request to the primary content management server for the second metadata associated with the content;

 

returning the first response, including the second metadata to the remote client transfer module;

 

receiving the second request for the current version of the content;

 

obtaining the current version of the content from the content management platform;

 

returning the current version of the content to the remote client transfer module; and

wherein the remote client transfer module is further configured for;

 

receiving a fourth request to access the content, wherein the fourth request is associated with a user;

 

determining that the primary content transfer module is inaccessible over the network;

 

accessing the data store to determine that the requested content is in the cache; and

 

providing the content in the cache in response to the fourth request.

2. The remote caching system of claim 1, wherein the remote client transfer module is configured for receiving a first request to designate content as resident in the cache.

3. The remote caching system of claim 1, wherein the remote client transfer module is configured for synchronizing the designated content with the primary content server at some interval asynchronously to servicing user requests.

4. The remote caching system of claim 1, wherein heartbeat messages are sent between remote client transfer module and the primary content transfer module to determine that the primary content transfer module is inaccessible over the network.

5. The remote caching system of claim 1, wherein providing the content in the cache comprises providing a location of the content to the user.

6. The remote caching system of claim 1, wherein the fourth request is received from one of a set of cache module clients, each cache module client corresponding to a type of repository platform application.

7. A method for remote caching, comprising:

accessing, at a remote client transfer module, a data store of a remote cache system including a cache and the data store to determine if first metadata associated with designated content is stored in the data store, wherein the data store is for storing metadata corresponding to content stored in the cache and the content in the cache is managed by a primary content management server;

sending a first request to a primary content transfer module associated with the primary content management server;

receiving a first response from the primary content transfer module including second metadata;

if first metadata associated with the designated content is stored in the data store;

comparing the first metadata to the second metadata to determine if a version of the content stored in the cache is a current version of the content;

if the version of the content stored in the cache is a current version, setting a flag in the first metadata to designate the content as resident;

if the version of the content stored in the cache is not the current version or if no first metadata associated with the designated content is stored in the data store;

sending a second request for the current version of the content to the primary content transfer module;

receiving the current version of the content;

storing the current version of the content in the cache; and

setting a flag in the first metadata to designate the content as resident;

receiving, at the primary content transfer module, the first request associated with the content from the remote client transfer module;

sending a third request to the primary content management server for the second metadata associated with the content;

returning the first response, including the second metadata to the remote client transfer module;

receiving the second request for the current version of the content;

obtaining the current version of the content from the content management platform;

returning the current version of the content to the remote client transfer module; and

at the remote client transfer module;

receiving a fourth request to access the content, wherein the fourth request is associated with a user;

determining that the primary content transfer module is inaccessible over the network;

accessing the data store to determine that the requested content is in the cache; and

providing the content in the cache in response to the fourth request.

8. The method of claim 7, wherein the remote client transfer module is configured for receiving a first request to designate content as resident in the cache.

9. The method of claim 7, wherein the remote client transfer module is configured for synchronizing the designated content with the primary content server at some interval asynchronously to servicing user requests.

10. The method of claim 7, wherein heartbeat messages are sent between remote client transfer module and the primary content transfer module to determine that the primary content transfer module is inaccessible over the network.

11. The method of claim 7, wherein providing the content in the cache comprises providing a location of the content to the user.

12. The method of claim 7, wherein the fourth request is received from one of a set of cache module clients, each cache module client corresponding to a type of repository platform application.

13. A non-transitory computer readable medium, comprising instruction for implementing remote caching in a system including a primary content management server for managing content, a remote cache system including a cache and a data store for storing metadata corresponding to content stored in the cache, where the content in cache is managed by the primary content management server, the instruction translatable to implement a remote client transfer module and a primary content transfer module, and

at a remote client transfer module:

accessing the data store to determine if first metadata associated with designated content is stored in the data store;

sending a first request to a primary content transfer module associated with the primary content management server;

receiving a first response from the primary content transfer module including second metadata;

if first metadata associated with the designated content is stored in the data store;

comparing the first metadata to the second metadata to determine if a version of the content stored in the cache is a current version of the content;

if the version of the content stored in the cache is a current version, setting a flag in the first metadata to designate the content as resident;

if the version of the content stored in the cache is not the current version or if no first metadata associated with the designated content is stored in the data store;

sending a second request for the current version of the content to the primary content transfer module;

receiving the current version of the content;

storing the current version of the content in the cache; and

setting a flag in the first metadata to designate the content as resident;

at the primary content transfer module;

receiving the first request associated with the content from the remote client transfer module;

sending a third request to the primary content management server for the second metadata associated with the content;

returning the first response, including the second metadata to the remote client transfer module;

receiving the second request for the current version of the content;

obtaining the current version of the content from the content management platform;

returning the current version of the content to the remote client transfer module; and

at the remote client transfer module;

receiving a fourth request to access the content, wherein the fourth request is associated with a user;

determining that the primary content transfer module is inaccessible over the network;

accessing the data store to determine that the requested content is in the cache; and

providing the content in the cache in response to the fourth request.

14. The computer readable medium of claim 13, wherein the remote client transfer module is configured for receiving a first request to designate content as resident in the cache.

15. The computer readable medium of claim 13, wherein the remote client transfer module is configured for synchronizing the designated content with the primary content server at some interval asynchronously to servicing user requests.

16. The computer readable medium of claim 13, wherein heartbeat messages are sent between remote client transfer module and the primary content transfer module to determine that the primary content transfer module is inaccessible over the network.

17. The computer readable medium of claim 13, wherein providing the content in the cache comprises providing a location of the content to the user.

18. The computer readable medium of claim 13, wherein the fourth request is received from one of a set of cache module clients, each cache module client corresponding to a type of repository platform application.