ElasticSearch單機雙實例的配置方法
https://knktc.com/2016/06/10/elasticsearch-multiple-instances/
Don’t Cross 32 GB!
https://www.elastic.co/guide/en/elasticsearch/guide/current/heap-sizing.html#compressed_oops
ElasticSearch術語
http://www.javashuo.com/article/p-rowaafgg-q.html
ElasticSearch 安裝中文分詞器
https://www.cnblogs.com/shaosks/p/7525060.htmlhtml