Improving File Retrieval Performance in Content Manager
Original Publication Date: 2004-Sep-10
Included in the Prior Art Database: 2004-Sep-10
IBM DB2 Content Manager(CM) provides a common interface for managing content. A typical CM configuration includes a library and one or more resource managers. System Administrator can assign a user's default Resource Manager(RM) as a LAN cache server. A LAN cache server store files from other RMs in its caching area(staging area). When there is a cache hit, the copy in the caching area will be sent to client. When there is a cache miss, the LAN cache server has to get the file from the owning RM. Currently, we only cache the files that client previously retrieve. In order to increase the number of files that can be retrieved from a LAN cache server without increase the size of the caching area(which is limited by the disk space pre-allocated), we send out a valid replica if it is found in the LAN cache server. By doing this, we can improve the file retrieval performance in Content Manager.