发布于 2017-03-28 00:33:17 | 198 次阅读 | 评论: 0 | 来源: 网友投递
Apache Solr 企业级全文搜索引擎
Solr是一个独立的企业级搜索应用服务器，它对外提供类似于Web-service的API接口。用户可以通过http请求，向搜索引擎服务器提交一定格式的XML文件，生成索引；也可以通过Http Get操作提出查找请求，并得到XML格式的返回结果；
Apache Solr 6.5.0 发布了。
该版本一些值得关注的变更如下：
PointFields (fixed-width multi-dimensional numeric & binary types enabling fast range search) are now supported
In-place updates to numeric docValues fields (single valued, non-stored, non-indexed) supported using atomic update syntax
A new LatLonPointSpatialField that uses points or doc values for query
It is now possible to declare a field as "large" in order to bypass the document cache
New sow=false request param (split-on-whitespace) for edismax & standard query parsers enables query-time multi-term synonyms
XML QueryParser (defType=xmlparser) now supports span queries hl.maxAnalyzedChars now have consistent default across highlighters
UnifiedSolrHighlighter and PostingsSolrHighlighter now support
CustomSeparatorBreakIterator
Scoring formula is adjusted for the score
Nodes functionCalcite Planner now applies constant Reduction Rules to optimize plans
A new significantTerms Streaming Expression that is able to extract the significant terms in an index