{"action":"created","issue":{"url":"https://api.github.com/repos/oracle1521/idea_list/issues/6","labels_url":"https://api.github.com/repos/oracle1521/idea_list/issues/6/labels{/name}","comments_url":"https://api.github.com/repos/oracle1521/idea_list/issues/6/comments","events_url":"https://api.github.com/repos/oracle1521/idea_list/issues/6/events","html_url":"https://github.com/oracle1521/idea_list/issues/6","id":123914444,"number":6,"title":"mapdb调研","user":{"login":"oracle1521","id":2378740,"avatar_url":"https://avatars.githubusercontent.com/u/2378740?v=3","gravatar_id":"","url":"https://api.github.com/users/oracle1521","html_url":"https://github.com/oracle1521","followers_url":"https://api.github.com/users/oracle1521/followers","following_url":"https://api.github.com/users/oracle1521/following{/other_user}","gists_url":"https://api.github.com/users/oracle1521/gists{/gist_id}","starred_url":"https://api.github.com/users/oracle1521/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/oracle1521/subscriptions","organizations_url":"https://api.github.com/users/oracle1521/orgs","repos_url":"https://api.github.com/users/oracle1521/repos","events_url":"https://api.github.com/users/oracle1521/events{/privacy}","received_events_url":"https://api.github.com/users/oracle1521/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/oracle1521/idea_list/labels/JAVA","name":"JAVA","color":"006b75"},{"url":"https://api.github.com/repos/oracle1521/idea_list/labels/mapdb","name":"mapdb","color":"fef2c0"},{"url":"https://api.github.com/repos/oracle1521/idea_list/labels/%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96","name":"性能优化","color":"009800"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-12-26T07:08:47Z","updated_at":"2015-12-26T07:31:17Z","closed_at":null,"body":"需要提升下系统的吞吐量，使用基于jvm的ehcache or guava 都不能很好地解决gc old gen的问题。项目中大量使用了ehcache和guava cache 导致项目到一定时间就开始频繁地GC。所以降低jvm 堆内存的使用才是正确的选择，有必要尝试下 mapdb 或者 本机redis 或者是 leveldb，这种java对外内存。提高系统的吞吐量"},"comment":{"url":"https://api.github.com/repos/oracle1521/idea_list/issues/comments/167292361","html_url":"https://github.com/oracle1521/idea_list/issues/6#issuecomment-167292361","issue_url":"https://api.github.com/repos/oracle1521/idea_list/issues/6","id":167292361,"user":{"login":"oracle1521","id":2378740,"avatar_url":"https://avatars.githubusercontent.com/u/2378740?v=3","gravatar_id":"","url":"https://api.github.com/users/oracle1521","html_url":"https://github.com/oracle1521","followers_url":"https://api.github.com/users/oracle1521/followers","following_url":"https://api.github.com/users/oracle1521/following{/other_user}","gists_url":"https://api.github.com/users/oracle1521/gists{/gist_id}","starred_url":"https://api.github.com/users/oracle1521/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/oracle1521/subscriptions","organizations_url":"https://api.github.com/users/oracle1521/orgs","repos_url":"https://api.github.com/users/oracle1521/repos","events_url":"https://api.github.com/users/oracle1521/events{/privacy}","received_events_url":"https://api.github.com/users/oracle1521/received_events","type":"User","site_admin":false},"created_at":"2015-12-26T07:31:17Z","updated_at":"2015-12-26T07:31:17Z","body":"一般情况下使用DB and DBMaker 就可以满足我们的使用\r\n很多使用都是基于builder模式的，所以使用的时候非常方便，同时DB还可以支持事务（commit rollback）"}}