{"action":"created","issue":{"url":"https://api.github.com/repos/Netflix/EVCache/issues/59","repository_url":"https://api.github.com/repos/Netflix/EVCache","labels_url":"https://api.github.com/repos/Netflix/EVCache/issues/59/labels{/name}","comments_url":"https://api.github.com/repos/Netflix/EVCache/issues/59/comments","events_url":"https://api.github.com/repos/Netflix/EVCache/issues/59/events","html_url":"https://github.com/Netflix/EVCache/issues/59","id":346434414,"node_id":"MDU6SXNzdWUzNDY0MzQ0MTQ=","number":59,"title":"The performance of the cache operations become more and more slow after several days","user":{"login":"shengang1978","id":5358448,"node_id":"MDQ6VXNlcjUzNTg0NDg=","avatar_url":"https://avatars0.githubusercontent.com/u/5358448?v=4","gravatar_id":"","url":"https://api.github.com/users/shengang1978","html_url":"https://github.com/shengang1978","followers_url":"https://api.github.com/users/shengang1978/followers","following_url":"https://api.github.com/users/shengang1978/following{/other_user}","gists_url":"https://api.github.com/users/shengang1978/gists{/gist_id}","starred_url":"https://api.github.com/users/shengang1978/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/shengang1978/subscriptions","organizations_url":"https://api.github.com/users/shengang1978/orgs","repos_url":"https://api.github.com/users/shengang1978/repos","events_url":"https://api.github.com/users/shengang1978/events{/privacy}","received_events_url":"https://api.github.com/users/shengang1978/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-08-01T03:26:41Z","updated_at":"2018-08-01T03:30:17Z","closed_at":null,"author_association":"NONE","body":"We face a serious problem on the performance of the EVCache to memcached server. Every several days (about 4 or 5 days), it becomes very slow to operate with the memcached server by EVCache on some servers (not all servers with the memcached servers).\r\n1. We have to run the flush_all command to clear the memcached data to resolve it. \r\n2. That restarting the web servers cannot resolve the performance issue. It still very slows after restarting.\r\n3. We have 10 web servers which connect the memcached server. But only several servers have the performance issue.\r\n4. The QPS/bandwith are not high. QPS only serveral hundreds.\r\n5. Most of the set/delete operation cost more than 1s. \r\n\r\nWe have doubt if it is the memcached server problem. But after we replace the memcached server with other two (replace one server (2 cores/16G ) with two servers (1 core 4G)), it still has the performance issue. And only part of the servers have the problem. \r\n\r\n"},"comment":{"url":"https://api.github.com/repos/Netflix/EVCache/issues/comments/409437894","html_url":"https://github.com/Netflix/EVCache/issues/59#issuecomment-409437894","issue_url":"https://api.github.com/repos/Netflix/EVCache/issues/59","id":409437894,"node_id":"MDEyOklzc3VlQ29tbWVudDQwOTQzNzg5NA==","user":{"login":"shengang1978","id":5358448,"node_id":"MDQ6VXNlcjUzNTg0NDg=","avatar_url":"https://avatars0.githubusercontent.com/u/5358448?v=4","gravatar_id":"","url":"https://api.github.com/users/shengang1978","html_url":"https://github.com/shengang1978","followers_url":"https://api.github.com/users/shengang1978/followers","following_url":"https://api.github.com/users/shengang1978/following{/other_user}","gists_url":"https://api.github.com/users/shengang1978/gists{/gist_id}","starred_url":"https://api.github.com/users/shengang1978/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/shengang1978/subscriptions","organizations_url":"https://api.github.com/users/shengang1978/orgs","repos_url":"https://api.github.com/users/shengang1978/repos","events_url":"https://api.github.com/users/shengang1978/events{/privacy}","received_events_url":"https://api.github.com/users/shengang1978/received_events","type":"User","site_admin":false},"created_at":"2018-08-01T03:30:17Z","updated_at":"2018-08-01T03:30:17Z","author_association":"NONE","body":"If there are many big data (near 1M), does it impact on the evcache performance?"}}
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