dugenkui03 edited a comment on issue #2592: 缓存对象回收 URL: https://github.com/apache/incubator-dubbo/issues/2592#issuecomment-427714338 > @dugenkui03 with the clear method introduced on `Cache` interface, how do you plan to use it? @beiwei30 when we want to invalidate a ExpiringCache object and gc it.for example,yesterday's data does not apply today. i think there should be implements of 'clear' and 'remove',because high-performance cache alway use "Future" as Value-If a calculation is canceled or fails, it needs to be removed from the cache. this idea can be found in 《java并发编程实战 java Concurrency in practice》5.6，page 87. details in [PR](https://github.com/apache/incubator-dubbo/pull/2594)
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