不爲也 比不能也

As the project manager of stagemonitor, an open source performance monitoring tool, I've recently been looking for a database to replace the cool-but-aging Graphite Time Series DataBase (TSDB) as the backend. TSDBs are specialised packages for storing (performance) metric data, like the response time of your app or the CPU utilisation of a server. Ultimately, we were looking for a datastore that..

Disable the features you do not need By default Elasticsearch indexes and adds doc values to most fields so that they can be searched and aggregated out of the box. For instance if you have a numeric field called foo that you need to run histograms on but that you never need to filter on, you can safely disable indexing on this field in your mappings:기본적으로, Elasticsearch는 대부분의 field가 검색되고 aggreg..

The completion suggester has undergone a complete rewrite. This means that the syntax and data structure for fields of type completion have changed, as have the syntax and response of completion suggester requests. See completion suggester for details. 자동완성(completion suggester)은 완전히 다시 작성되었다. 즉, completion type의 field에 대한 구문 및 데이터 구조가 변경되었고, 이에 따라 completion suggester request에 구문 및 response가 변경..

?refresh no longer supports truthy and falsy valueseditThe ?refresh request parameter used to accept any value other than false, 0, off, and no to mean "make the changes from this request visible for search immediately." Now it only accepts ?refresh and ?refresh=true to mean that. You can set it to ?refresh=false and the request will take no refresh-related action. The same is true if you leave ..