Better synchronization in ConcurrentMapCache [SPR-13810]

[spring-projects-issues]

Stéphane Nicoll opened SPR-13810 and commented

ConcurrentMapCache currently synchronizes the full store in case of an atomic get operation as it can't rely on computeIfAbsent. Since Spring 5 can uses Java8 directly, we can switch to that method instead.

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Affects: 4.3 RC1

Issue Links:

• Provide means to configure multithreaded access for cache abstraction [SPR-9254] #13892 Provide means to configure multithreaded access for cache abstraction
• Race condition in ConcurrentMapCache [SPR-16533] #21076 Race condition in ConcurrentMapCache

Referenced from: commits 3096888