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https://issues.apache.org/jira/browse/CASSANDRA-3143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098026#comment-13098026
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Pavel Yaskevich edited comment on CASSANDRA-3143 at 9/6/11 8:41 PM:
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I think following steps are going to be appropriate to archive the goal:
- row_cache_provider should be moved to global config
- {key/row}_cache_save_period parameters should be moved to global config
- {keys/rows}_cached should be moved to the global config
- new o.a.c.service.CacheService instance to hold key and row caches as static
members initialized at startup
that service will be also responsible for cache save to disk operations.
- new CacheSegment class should be issued from global cache for each of the
ColumnFamilyStores registered in the system to be responsible for put/get
operations, flush/read from disk.
- cache sizes should be converted to memory units to support precise weighting
of the cache using Weigher backed by Jamm
was (Author: xedin):
I think following steps are going to be appropriate to archive the goal:
- row_cache_provider should be moved to global config
- {key/row}_cache_save_period parameters should be moved to global config
- new o.a.c.service.CacheService instance to hold key and row caches as static
members initialized at startup
that service will be also responsible for cache save to disk operations.
- new CacheSegment class should be issued from global cache for each of the
ColumnFamilyStores registered in the system to be responsible for put/get
operations, statistics such as capacity/size, extend/shrink operations on
segment capacity, flush/read from disk.
- cache sizes should be converted to memory units to support precise weighting
of the cache using Weigher backed by Jamm
> Global caches (key/row)
> -----------------------
>
> Key: CASSANDRA-3143
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3143
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Pavel Yaskevich
> Assignee: Pavel Yaskevich
> Priority: Minor
> Labels: Core
> Fix For: 1.1
>
>
> Caches are difficult to configure well as ColumnFamilies are added, similar
> to how memtables were difficult pre-CASSANDRA-2006.
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