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Configuring the Messaging Cache

With SQL implementation in Messaging Framework, index entries are stored in an SQL database and only the most recently used index entries are cached in RAM.

Required background

Before you start, you must understand caching.

Procedure

You can configure the cache size and other caching-related parameters using the msgcache.ini configuration file, located at Z:\private\1000484b\. The following table lists the cache configuration parameters:

Parameter	Default value	Unit	Description
`MsvMaximumCacheSize`	1024	KB	The maximum size of cache.
`MsvInitialCacheCreation`	40	Percent	The percentage of `MsvMaximumCacheSize` allocated to the cache during server start-up.
`MsvCacheIncrement`	20	Percent	The percentage of `MsvMaximumCacheSize` allocated to cache in each subsequent allocation (after initial memory allocation).
`MsvCacheThreshold`	70	Percent	The percentage of the cache that must be occupied before the next allocation is initiated.
`MsvSearchSortCachePercentage`	20	Percent	The percentage of memory that should be allocated to search and sort cache.

msgcache.ini example

MsvMaximumCacheSize = 1000

MsvInitialCacheCreation = 40

MsvCacheIncrement = 20

MsvCacheThreshold = 70

MsvSearchSortCachePercentage = 20

Parent topic: Message Server and Store Configuration Tutorial