[GitHub] [pulsar] 315157973 opened a new pull request #12045: Optimize the memory usage of Cache Eviction

[GitBox]

315157973 opened a new pull request #12045:
URL: https://github.com/apache/pulsar/pull/12045


   ### Motivation
   Cache Eviction is executed every 100ms by default, and the frequency is very 
high. I have observed that it produces a lot of garbage
   
![image](https://user-images.githubusercontent.com/9758905/133396233-b149f4f7-2607-4dc6-a9fa-b28d475b97df.png)
   
   The optimized memory is as follow:
   
![image](https://user-images.githubusercontent.com/9758905/133396367-2d5d54bd-d5df-426b-b85c-99832995e34a.png)
   
   
   ### Modifications
   1）When there is no cache, no longer check
   2）Avoid traversing all cursors
   
   ### Documentation
   
   no-need-doc 
   
   
   


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