Elasticsearch java开发实战避坑指南，猛戳\x26gt;\x26gt;

线上问题的实战方案解读，猛戳\x26gt;\x26gt;

In this post, I discuss in-depth information on how to manage elasticsearch in production

Solr和ElasticSearch到底有什么不同？我在网上搜索一些文章，这些文章要么是列出表，详细介绍两者什么功能有，什么功能没有，要么是从大类出发，比较两者的关注度，社区等等。看完这些文章没法解决我心中的疑惑，这里跟大家分享下我的看法。

Elasticsearch索引设计实战环节，避不开的几个核心问题。猛戳\x26gt;\x26gt;

腾讯万亿级 Elasticsearch 技术解密

你是否也有类似困惑：“存储数据，data目录从一个机器直接移到一台新的机器是否可以直接使用？” 本文给出答案。猛戳\x26gt;\x26gt;

With over 40,000 active designs, our client Patternbank are global leaders in the design and fashion industry. They were looking to improve their customers’ experience by returning more relevant…

A year ago when I updated the TLE website I dropped the “search by color” functionality. Originally, all the colors were indexed into a database table and the frontend generated some complex queries to support specific and multi-color searching. On occasion, it caused some database bottlenecks during peak loads and with some particularly complex color combinations. The color search was also a completely separate interface from searching other product attributes and availability. It was neat, but it was not a great user experience.

It took some time to get back to the search by color functionality, but I've finally been able to get back to it and, with elasticsearch, significantly improve it.

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通过我瓣一个真实的线上场景看我Elasticsearch优化的全过程

慢查询视为更广泛集群性能出问题的潜在典型症状。Elasticsearch性能优化非一朝一夕之功，“认准病根才能根除病痛”。

一条SQL查询语句可以在各类引擎和数据源上运行，如何做到？

The Requirement

之前我在社区里写过 《ElasticSearch集群故障案例分析: 警惕通配符查询》一文，讲的是关于通配符查询可能引起ES集群负载过高的问题。 当时提到wildcard query构造的non-deterministic automaton要经历一个determinize的过程，其间如果生成的状态数量过高，可能引起集群负载彪高，影响对外服务。 O

您好，这个分享太及时了，我们的模糊搜索也有类似的问题，搜索字段设置都是not_analyzed的，搜索的时候都是在字符串前后加了通配符 “ * ”, 查询确实很慢。 现在看了您的分享，也只想到了限制字符串长度来缓解es集群压力，没有想到更好v