ElasticSearch是一个基于Lucene的搜索服务器。它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口。Elasticsearch是用Java开发的，并作为Apache许可条款下的开放源码发布，是当前流行的企业级搜索引擎。设计用于云计算中，能够达到实时搜索，稳定，可靠，快速，安装使用方便。elasticsearch中文使用指南。
Elastic Search is a Lucene-based search server. It provides a full-text search engine with distributed multi-user capabilities, based on RESTful web interface. Elastic search is a popular enterprise search engine developed in Java and released as open source under the Apache license. Design for cloud computing, can achieve real-time search, stable, reliable, fast, easy to install and use. Chinese Guide to Elastic Search. (2018-12-04, PDF, 2007KB, 下载2次)
北大信科院的两位教授写的，致力于搞搜索引擎的人应该看看。
a paper of summarization on technology and future of the search engine, written by 2 professors in Peking University (2009-03-22, PDF, 300KB, 下载4次)