src-spring-framework

Spring Framework

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Brian Clozel 6cd67412cc Avoid lock contention in CaffeineCacheManager Prior to this commit, using a dynamic `CaffeineCacheManager` would rely on `ConcurrentHashMap#computeIfAbsent` for retrieving and creating cache instances as needed. It turns out that using this method concurrently can cause lock contention even when all known cache instances are instantiated. This commit avoids using this method if the cache instance already exists and avoid storing `null` entries in the map. This change reduces lock contention and the overall HashMap size in the non-dynamic case. Fixes gh-30066	2 years ago
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src	Avoid lock contention in CaffeineCacheManager	2 years ago
spring-context-support.gradle	…

Brian Clozel 6cd67412cc Avoid lock contention in CaffeineCacheManager

Prior to this commit, using a dynamic `CaffeineCacheManager` would rely
on `ConcurrentHashMap#computeIfAbsent` for retrieving and creating cache
instances as needed. It turns out that using this method concurrently
can cause lock contention even when all known cache instances are
instantiated.

This commit avoids using this method if the cache instance already
exists and avoid storing `null` entries in the map. This change reduces
lock contention and the overall HashMap size in the non-dynamic case.

Fixes gh-30066

2 years ago

src

Avoid lock contention in CaffeineCacheManager

2 years ago

spring-context-support.gradle

…