Netflix / Netflix/EVCache

Two issues on the evcache

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#61 1 comment 1 reaction 0 assignees View on GitHub

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Dominant language
Java
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Description

  1. The evcache.EVCacheClientPool.poolSize=2 setting will cause the memcached unstable.
    If we set the poolSize as 2, the cache client becomes unstable. After several days/hours running and there are about 1M data in cache server, the get/set/delete operation become more and more slow. They needs more than tens seconds.
  2. In default, the evcache writes so many logs with info level.
    After we upgrade to the 4.131. 0, the evcache writes so many data, our log database is easy to be full. And it will slow our servers.

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the reported behavior with evcache.EVCacheClientPool.poolSize=2 and inspect the logging behavior introduced after version 4.131.0. The report provides no file or test entry point, so first identify the relevant client-pool and logging code. Done means the cache operations remain responsive under the described load and excessive info-level logging is addressed.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, memcached
Domain
backend, databases, distributed-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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