Xapian介绍

Xapian 搜索引擎潘俊勇易度 everydo.com

我使用 ZODB ,[object Object],[object Object],[object Object],[object Object],[object Object]

ZODB 的索引问题 ,[object Object],[object Object]

需要独立的搜索模块 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

可选的产品 ,[object Object],[object Object],[object Object],[object Object]

Mysql ,[object Object],[object Object],[object Object],[object Object],[object Object]

lucene /Solar ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Xapian ,[object Object],[object Object],[object Object],[object Object],类搜索引擎的简单服务

Xapian performance ,[object Object],[object Object],[object Object],[object Object]

sphinx ,[object Object],[object Object],[object Object],各种复杂的应用

简单比较 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

我们选择 xapian ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

搜索服务索引数据库索引 Index 搜索 Search 关系数据库文件 NoSQL 数据库 Web 应用各种数据源异步、实时

Xapian 特性 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Xapian 术语 ,[object Object],[object Object],[object Object],[object Object],[object Object]

首先在 Terms 里面找 documents 限定范围完了，查相应的 value ，进行排序如果数据量大，这个过程可能比较慢。如果需要，可把 data 再取出所以技巧是，尽量减少第一步的搜索结果量另外， Sphinx 也是这个原理。只是他为了提高性能，把 value 全部放入内存了。

Database 存储信息 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Xapian-backend 存储格式 ,[object Object],[object Object],[object Object],[object Object]

Xapian 的 python 接口 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

建立索引 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

写入速度慢？ ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

并行修改？ ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

搜索 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

组合搜索 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

使用 QueryParser ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

排序 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

多索引字段？ ,[object Object],[object Object],[object Object]

搜索 ,[object Object],[object Object],[object Object],[object Object]

加大缓存提速？ ,[object Object],[object Object]

分库查询 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

分布式搜索？ ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

备份？ ,[object Object],[object Object],[object Object],[object Object]

“ 压缩”数据库 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Xapian 优点 ,[object Object],[object Object],[object Object],[object Object],[object Object]

Xapian 问题 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

结论 ,[object Object],[object Object],[object Object]

Xapian介绍

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