发布于 2016-09-10 23:28:28 | 138 次阅读 | 评论: 0 | 来源: 网友投递
Sphinx 全文检索引擎
Sphinx是一个基于SQL的全文检索引擎，可以结合MySQL,PostgreSQL做全文搜索，它可以提供比数据库本身更专业的搜索功能，使得应用程序更容易实现专业化的全文检索。Sphinx特别为一些脚本语言设计搜索API接口，如PHP,Python,Perl,Ruby等，同时为MySQL也设计了一个存储引擎插件。
继sphinx 2.3.1-beta 发布之后一年半时间，sphinx终于发布了sphinx 2.3.2-beta
之前的sphinx 2.3.1-beta 做出了重大改进，比如线程池，可以充分利用多核CPU 。
此次2.3.2-beta 值得注意的新特性是启动速度超快，不再等待全部索引从缓慢的硬盘逐步载入内存后才能启动完成。
主要更新内容：
Searchd now uses mmap(). Daemon is available immediately and spawns a separate thread that loads the indexes.
Built-in suggest using CALL QSUGGEST statement for indexes with infixing enabled and dict=keywords
HTTP protocol interface
added RAND(),HOUR(),MINUTE(),SECOND() functions
addedFLUSH HOSTNAMES SphinxQL statement and hostname_lookup directive
added RELOAD INDEX SphinxQL statement
added sphinxql_timeout directive
changed SHOW INDEX STATUS now displays performed number of queries, query times and found rows of last 1,5,15 minutes and total since daemon start
changed retry_count behaviour
added wildcard support and new options for CALL KEYWORDS SphinxQL statement
faster RT inserts
faster CSV/TSV indexing
query cache is disabled by default
indexer --keeep-attrs support specific path
daemon now picks changed index path when it receives HUP
added alias support for MVA attributes
added SphinxQL support for comparison, IN, and BETWEEN conditions over ANY/ALL(mva)
added explicit JSON type conversion in WHERE clause
fixed #2503 update of attributes at index prevents binlog from clean
fixed #2516 suggest for index with exact_word or morphology options
fixed #2507 .NET Connector overflow exception (unsigned id support)
Fixed initial round-robin counter
Thread-safety checks added (backported)
Refactored dl-staff
added per-index statistics to 'show index status'
fixed #2502 final calculation of expression at RT index (optimized calls count)
Refactored ha-staff
Added begin() and end() to CSphVector, CSphTightVector
这次更新修复了超过100个bug，某些最重要的是有关查询缓存的。
点击下面链接查看更详细内容：
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