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https://issues.apache.org/jira/browse/IGNITE-29249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nikita Amelchev updated IGNITE-29249:
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Fix Version/s: 2.20
> Reduce allocations on the cache get path
> ----------------------------------------
>
> Key: IGNITE-29249
> URL: https://issues.apache.org/jira/browse/IGNITE-29249
> Project: Ignite
> Issue Type: Improvement
> Reporter: Nikita Amelchev
> Assignee: Nikita Amelchev
> Priority: Major
> Fix For: 2.20
>
> Attachments: JmhCacheRemoteGetBenchmark.java
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Two sources of pure overhead on the hottest cache path:
> *DHT side of a remote get.* {{GridDhtGetFuture}} and
> {{GridDhtGetSingleFuture}} allocate a future ID and a new cache version that
> nobody reads. The version counter is bumped under contention for every read.
> *Cluster state check on every cache operation.* Each operation on a cache
> proxy calls {{{}publicApiState{}}}, which builds a finished future and a
> chain even when no state transition is in progress, i.e. in the normal steady
> state of the cluster.
> Both can be removed without changing the behaviour.
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