Apache Lucene 5.5.0 发布了，该版本包含 bug 修复、优化和改进，值得关注的内容有： * JoinUtil.createJoinQuery can now join on numeric doc values fields * BlendedInfixSuggester now has an exponential reciprocal scoring model, to more strongly favor suggestions with matches closer to the beginning * CustomAnalyzer has improved (compile time) type safety * DFISimilarity implements the divergence from independence scoring model * Fully wrap any other merge policy using MergePolicyWrapper * Sandbox geo point queries have graduated into the spatial module, and now use a more efficient binary term encoding for smaller index size, faster indexing, and decreased search-time heap usage * BooleanQuery performs some new query optimizations * TermsQuery constructors are more GC efficient 完整记录请看：https://lucene.apache.org/core/5_5_0/changes/Changes.html 下载地址：http://lucene.apache.org/core/mirrors-core-latest-redir.html Apache Lucene 5.5.0 发布，Java 搜索引擎下载地址
