elasticsearch 2.0.0 beta1 发布，分布式搜索引擎

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　　elasticsearch 2.0.0 beta1 发布，主要更新内容如下：

• 　　Pipeline Aggregations which allow you to run aggregations on the results of other aggregations, including derivatives, moving averages, and Holt Winters predictive algorithms.
  
• 　　Better store compression to fit more data into your disks and file system cache.
  
• 　　Better heap usage with doc-values-by-default, reduced memory usage during merges, and roaring bitsets for filter caching.
  
• 　　Structured, readable, exceptions.
  
• 　　Optimised query execution order, auto-caching of filters, and parent-child rewritten for faster queries.
  
• 
  　　More>
  
• 　　Writes to transaction logs are atomic and durable by default.
  
• 
  　　A big cleanup to type mappings to make them safe, unambiguous, and>
  
• 　　Binding only to localhost by default.
  
• 　　Cluster state diffs for faster change propagation.
  

　　完整更新内容请看：release note
　　
　　下载页面：v2.0.0-beta1
　　
　　Elastic Search 是一个基于Lucene构建的开源，分布式，RESTful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。支持通过HTTP使用JSON进行数据索引。
　　ElasticSearch 提供多种语言的客户端 API：

• 　　Java API — 1.x —  other versions
  
• 　　JavaScript API — 2.4 —  other versions
  
• 　　Groovy API — 1.x —  other versions
  
• 　　.NET API
  
• 　　PHP API — 1.0 —  other versions
  
• 　　Perl API
  
• 　　Python API
  
• 　　Ruby API
  

　　提供 Marvel 可视化监控台：