{"id":521,"date":"2019-03-13T13:18:05","date_gmt":"2019-03-13T05:18:05","guid":{"rendered":"https:\/\/fick707.com\/?p=521"},"modified":"2019-03-13T13:18:34","modified_gmt":"2019-03-13T05:18:34","slug":"elasticsearch-introduce","status":"publish","type":"post","link":"https:\/\/fick707.com\/?p=521","title":{"rendered":"Elasticsearch\uff0d\u57fa\u7840\u4ecb\u7ecd\u53ca\u7d22\u5f15\u539f\u7406\u5206\u6790"},"content":{"rendered":"<p>\u8f6c\u8f7d\u81ea\uff1ahttps:\/\/www.cnblogs.com\/dreamroute\/p\/8484457.html<\/p>\n<p>\u6700\u8fd1\u5728\u53c2\u4e0e\u4e00\u4e2a\u57fa\u4e8eElasticsearch\u4f5c\u4e3a\u5e95\u5c42\u6570\u636e\u6846\u67b6\u63d0\u4f9b\u5927\u6570\u636e\u91cf(\u4ebf\u7ea7)\u7684\u5b9e\u65f6\u7edf\u8ba1\u67e5\u8be2\u7684\u65b9\u6848\u8bbe\u8ba1\u5de5\u4f5c\uff0c\u82b1\u4e86\u4e9b\u65f6\u95f4\u5b66\u4e60Elasticsearch\u7684\u57fa\u7840\u7406\u8bba\u77e5\u8bc6\uff0c\u6574\u7406\u4e86\u4e00\u4e0b\uff0c\u5e0c\u671b\u80fd\u5bf9Elasticsearch\u611f\u5174\u8da3\/\u60f3\u4e86\u89e3\u7684\u540c\u5b66\u6709\u6240\u5e2e\u52a9\u3002 \u540c\u65f6\u4e5f\u5e0c\u671b\u6709\u53d1\u73b0\u5185\u5bb9\u4e0d\u6b63\u786e\u6216\u8005\u6709\u7591\u95ee\u7684\u5730\u65b9\uff0c\u671b\u6307\u660e\uff0c\u4e00\u8d77\u63a2\u8ba8\uff0c\u5b66\u4e60\uff0c\u8fdb\u6b65\u3002<\/p>\n<h2 id=\"\">\u4ecb\u7ecd<\/h2>\n<p>Elasticsearch \u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u53ef\u6269\u5c55\u7684\u5b9e\u65f6\u641c\u7d22\u548c\u5206\u6790\u5f15\u64ce,\u4e00\u4e2a\u5efa\u7acb\u5728\u5168\u6587\u641c\u7d22\u5f15\u64ce Apache Lucene(TM) \u57fa\u7840\u4e0a\u7684\u641c\u7d22\u5f15\u64ce.\u5f53\u7136 Elasticsearch \u5e76\u4e0d\u4ec5\u4ec5\u662f Lucene \u90a3\u4e48\u7b80\u5355\uff0c\u5b83\u4e0d\u4ec5\u5305\u62ec\u4e86\u5168\u6587\u641c\u7d22\u529f\u80fd\uff0c\u8fd8\u53ef\u4ee5\u8fdb\u884c\u4ee5\u4e0b\u5de5\u4f5c:<\/p>\n<ul>\n<li>\u5206\u5e03\u5f0f\u5b9e\u65f6\u6587\u4ef6\u5b58\u50a8\uff0c\u5e76\u5c06\u6bcf\u4e00\u4e2a\u5b57\u6bb5\u90fd\u7f16\u5165\u7d22\u5f15\uff0c\u4f7f\u5176\u53ef\u4ee5\u88ab\u641c\u7d22\u3002<\/li>\n<li>\u5b9e\u65f6\u5206\u6790\u7684\u5206\u5e03\u5f0f\u641c\u7d22\u5f15\u64ce\u3002<\/li>\n<li>\u53ef\u4ee5\u6269\u5c55\u5230\u4e0a\u767e\u53f0\u670d\u52a1\u5668\uff0c\u5904\u7406PB\u7ea7\u522b\u7684\u7ed3\u6784\u5316\u6216\u975e\u7ed3\u6784\u5316\u6570\u636e\u3002<\/li>\n<\/ul>\n<h3 id=\"\">\u57fa\u672c\u6982\u5ff5<\/h3>\n<p>\u5148\u8bf4Elasticsearch\u7684\u6587\u4ef6\u5b58\u50a8\uff0cElasticsearch\u662f\u9762\u5411\u6587\u6863\u578b\u6570\u636e\u5e93\uff0c\u4e00\u6761\u6570\u636e\u5728\u8fd9\u91cc\u5c31\u662f\u4e00\u4e2a\u6587\u6863\uff0c\u7528JSON\u4f5c\u4e3a\u6587\u6863\u5e8f\u5217\u5316\u7684\u683c\u5f0f\uff0c\u6bd4\u5982\u4e0b\u9762\u8fd9\u6761\u7528\u6237\u6570\u636e\uff1a<\/p>\n<pre><code class=\"hljs json\">{\n    <span class=\"hljs-attr\">\"<\/span><span class=\"hljs-attribute\"><span class=\"hljs-attr\">name\"<\/span> :     <span class=\"hljs-value\"><span class=\"hljs-string\">\"John\"<\/span>,\n    <span class=\"hljs-attr\">\"<\/span><span class=\"hljs-attr\">sex\"<\/span> :      <span class=\"hljs-string\">\"Male\"<\/span>,\n    <span class=\"hljs-attr\">\"<\/span><span class=\"hljs-attr\">age\"<\/span> :      <span class=\"hljs-number\">25,\n    <span class=\"hljs-attr\">\"<\/span><span class=\"hljs-attr\">birthDate\"<\/span>: <span class=\"hljs-string\">\"1990\/05\/01\"<\/span>,\n    <span class=\"hljs-attr\">\"<\/span><span class=\"hljs-attr\">about\"<\/span> :    <span class=\"hljs-string\">\"I love to go rock climbing\"<\/span>,\n    <span class=\"hljs-attr\">\"<\/span><span class=\"hljs-attr\">interests\"<\/span>: [ <span class=\"hljs-string\">\"sports\", \"music\" ]\n}\n<\/span><\/span><\/span><\/span><\/code><\/pre>\n<p>\u7528Mysql\u8fd9\u6837\u7684\u6570\u636e\u5e93\u5b58\u50a8\u5c31\u4f1a\u5bb9\u6613\u60f3\u5230\u5efa\u7acb\u4e00\u5f20User\u8868\uff0c\u6709balabala\u7684\u5b57\u6bb5\u7b49\uff0c\u5728Elasticsearch\u91cc\u8fd9\u5c31\u662f\u4e00\u4e2a<em>\u6587\u6863<\/em>\uff0c\u5f53\u7136\u8fd9\u4e2a\u6587\u6863\u4f1a\u5c5e\u4e8e\u4e00\u4e2aUser\u7684<em>\u7c7b\u578b<\/em>\uff0c\u5404\u79cd\u5404\u6837\u7684\u7c7b\u578b\u5b58\u5728\u4e8e\u4e00\u4e2a<em>\u7d22\u5f15<\/em>\u5f53\u4e2d\u3002\u8fd9\u91cc\u6709\u4e00\u4efd\u7b80\u6613\u7684\u5c06Elasticsearch\u548c\u5173\u7cfb\u578b\u6570\u636e\u672f\u8bed\u5bf9\u7167\u8868:<\/p>\n<pre><code class=\"hljs bash\">\u5173\u7cfb\u6570\u636e\u5e93     \u21d2 \u6570\u636e\u5e93 \u21d2 \u8868    \u21d2 \u884c    \u21d2 \u5217(Columns)\n\nElasticsearch  \u21d2 \u7d22\u5f15(Index)   \u21d2 \u7c7b\u578b(<span class=\"hljs-built_in\">type)  \u21d2 \u6587\u6863(Docments)  \u21d2 \u5b57\u6bb5(Fields)  \n<\/span><\/code><\/pre>\n<p>\u4e00\u4e2a Elasticsearch \u96c6\u7fa4\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u7d22\u5f15(\u6570\u636e\u5e93)\uff0c\u4e5f\u5c31\u662f\u8bf4\u5176\u4e2d\u5305\u542b\u4e86\u5f88\u591a\u7c7b\u578b(\u8868)\u3002\u8fd9\u4e9b\u7c7b\u578b\u4e2d\u5305\u542b\u4e86\u5f88\u591a\u7684\u6587\u6863(\u884c)\uff0c\u7136\u540e\u6bcf\u4e2a\u6587\u6863\u4e2d\u53c8\u5305\u542b\u4e86\u5f88\u591a\u7684\u5b57\u6bb5(\u5217)\u3002Elasticsearch\u7684\u4ea4\u4e92\uff0c\u53ef\u4ee5\u4f7f\u7528Java API\uff0c\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528HTTP\u7684Restful API\u65b9\u5f0f\uff0c\u6bd4\u5982\u6211\u4eec\u6253\u7b97\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u53ef\u4ee5\u7b80\u5355\u53d1\u9001\u4e00\u4e2aHTTP\u7684\u8bf7\u6c42\uff1a<\/p>\n<pre><code class=\"hljs cpp\">PUT \/megacorp\/employee\/<span class=\"hljs-number\">1  \n{\n    <span class=\"hljs-string\">\"name\" :     \"John\",\n    \"sex\" :      \"Male\",\n    \"age\" :      25,\n    \"about\" :    \"I love to go rock climbing\",\n    \"interests\": [ \"sports\", \"music\" ]\n}\n<\/span><\/span><\/code><\/pre>\n<p>\u66f4\u65b0\uff0c\u67e5\u8be2\u4e5f\u662f\u7c7b\u4f3c\u8fd9\u6837\u7684\u64cd\u4f5c\uff0c\u5177\u4f53\u64cd\u4f5c\u624b\u518c\u53ef\u4ee5\u53c2\u89c1<a href=\"http:\/\/www.learnes.net\/data\/README.html\" target=\"_blank\" rel=\"noopener noreferrer\">Elasticsearch\u6743\u5a01\u6307\u5357<\/a><\/p>\n<hr \/>\n<h2 id=\"\">\u7d22\u5f15<\/h2>\n<p>Elasticsearch\u6700\u5173\u952e\u7684\u5c31\u662f\u63d0\u4f9b\u5f3a\u5927\u7684\u7d22\u5f15\u80fd\u529b\u4e86\uff0c\u5176\u5b9eInfoQ\u7684\u8fd9\u7bc7<a href=\"http:\/\/www.infoq.com\/cn\/articles\/database-timestamp-02?utm_source=infoq&amp;utm_medium=related_content_link&amp;utm_campaign=relatedContent_articles_clk\" target=\"_blank\" rel=\"noopener noreferrer\">\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u5e93\u7684\u79d8\u5bc6(2)\u2014\u2014\u7d22\u5f15<\/a>\u5199\u7684\u975e\u5e38\u597d\uff0c\u6211\u8fd9\u91cc\u4e5f\u662f\u56f4\u7ed5\u8fd9\u7bc7\u7ed3\u5408\u81ea\u5df1\u7684\u7406\u89e3\u8fdb\u4e00\u6b65\u68b3\u7406\u4e0b\uff0c\u4e5f\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5927\u5bb6\u66f4\u597d\u7684\u7406\u89e3\u8fd9\u7bc7\u6587\u7ae0\u3002<\/p>\n<p>Elasticsearch\u7d22\u5f15\u7684\u7cbe\u9ad3\uff1a<\/p>\n<blockquote><p>\u4e00\u5207\u8bbe\u8ba1\u90fd\u662f\u4e3a\u4e86\u63d0\u9ad8\u641c\u7d22\u7684\u6027\u80fd<\/p><\/blockquote>\n<p>\u53e6\u4e00\u5c42\u610f\u601d\uff1a\u4e3a\u4e86\u63d0\u9ad8\u641c\u7d22\u7684\u6027\u80fd\uff0c\u96be\u514d\u4f1a\u727a\u7272\u67d0\u4e9b\u5176\u4ed6\u65b9\u9762\uff0c\u6bd4\u5982\u63d2\u5165\/\u66f4\u65b0\uff0c\u5426\u5219\u5176\u4ed6\u6570\u636e\u5e93\u4e0d\u7528\u6df7\u4e86\u3002\u524d\u9762\u770b\u5230\u5f80Elasticsearch\u91cc\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u5176\u5b9e\u5c31\u662f\u76f4\u63a5PUT\u4e00\u4e2ajson\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e2a\u5bf9\u8c61\u6709\u591a\u4e2afields\uff0c\u6bd4\u5982\u4e0a\u9762\u4f8b\u5b50\u4e2d\u7684<em>name, sex, age, about, interests<\/em>\uff0c\u90a3\u4e48\u5728\u63d2\u5165\u8fd9\u4e9b\u6570\u636e\u5230Elasticsearch\u7684\u540c\u65f6\uff0cElasticsearch\u8fd8\u9ed8\u9ed8<span id=\"fnref:1\"><a href=\"http:\/\/blog.pengqiuyuan.com\/ji-chu-jie-shao-ji-suo-yin-yuan-li-fen-xi\/#fn:1\" rel=\"footnote\">1<\/a>\u7684\u4e3a\u8fd9\u4e9b\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15&#8211;\u5012\u6392\u7d22\u5f15\uff0c\u56e0\u4e3aElasticsearch\u6700\u6838\u5fc3\u529f\u80fd\u662f\u641c\u7d22\u3002<\/span><\/p>\n<h3 id=\"elasticsearch\">Elasticsearch\u662f\u5982\u4f55\u505a\u5230\u5feb\u901f\u7d22\u5f15\u7684<\/h3>\n<p>InfoQ\u90a3\u7bc7\u6587\u7ae0\u91cc\u8bf4Elasticsearch\u4f7f\u7528\u7684\u5012\u6392\u7d22\u5f15\u6bd4\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684B-Tree\u7d22\u5f15\u5feb\uff0c\u4e3a\u4ec0\u4e48\u5462\uff1f<\/p>\n<h4 id=\"btree\">\u4ec0\u4e48\u662fB-Tree\u7d22\u5f15?<\/h4>\n<p>\u4e0a\u5927\u5b66\u8bfb\u4e66\u65f6\u8001\u5e08\u6559\u8fc7\u6211\u4eec\uff0c\u4e8c\u53c9\u6811\u67e5\u627e\u6548\u7387\u662flogN\uff0c\u540c\u65f6\u63d2\u5165\u65b0\u7684\u8282\u70b9\u4e0d\u5fc5\u79fb\u52a8\u5168\u90e8\u8282\u70b9\uff0c\u6240\u4ee5\u7528\u6811\u578b\u7ed3\u6784\u5b58\u50a8\u7d22\u5f15\uff0c\u80fd\u540c\u65f6\u517c\u987e\u63d2\u5165\u548c\u67e5\u8be2\u7684\u6027\u80fd\u3002\u56e0\u6b64\u5728\u8fd9\u4e2a\u57fa\u7840\u4e0a\uff0c\u518d\u7ed3\u5408\u78c1\u76d8\u7684\u8bfb\u53d6\u7279\u6027(\u987a\u5e8f\u8bfb\/\u968f\u673a\u8bfb)\uff0c\u4f20\u7edf\u5173\u7cfb\u578b\u6570\u636e\u5e93\u91c7\u7528\u4e86B-Tree\/B+Tree\u8fd9\u6837\u7684\u6570\u636e\u7ed3\u6784\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/b-tree.png\" alt=\"Alt text\" \/><\/p>\n<p>\u4e3a\u4e86\u63d0\u9ad8\u67e5\u8be2\u7684\u6548\u7387\uff0c\u51cf\u5c11\u78c1\u76d8\u5bfb\u9053\u6b21\u6570\uff0c\u5c06\u591a\u4e2a\u503c\u4f5c\u4e3a\u4e00\u4e2a\u6570\u7ec4\u901a\u8fc7\u8fde\u7eed\u533a\u95f4\u5b58\u653e\uff0c\u4e00\u6b21\u5bfb\u9053\u8bfb\u53d6\u591a\u4e2a\u6570\u636e\uff0c\u540c\u65f6\u4e5f\u964d\u4f4e\u6811\u7684\u9ad8\u5ea6\u3002<\/p>\n<h4 id=\"\">\u4ec0\u4e48\u662f\u5012\u6392\u7d22\u5f15?<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/inverted-index.png\" alt=\"Alt text\" \/><\/p>\n<p>\u7ee7\u7eed\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u5047\u8bbe\u6709\u8fd9\u4e48\u51e0\u6761\u6570\u636e(\u4e3a\u4e86\u7b80\u5355\uff0c\u53bb\u6389about, interests\u8fd9\u4e24\u4e2afield):<\/p>\n<pre><code class=\"hljs ruby\"><span class=\"hljs-params\">| <\/span><span class=\"hljs-constant\"><span class=\"hljs-params\">ID |<\/span> Name <span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">Age  |<\/span>  Sex     <span class=\"hljs-params\">|\n|<\/span> -- <span class=\"hljs-params\">|<\/span><span class=\"hljs-symbol\"><span class=\"hljs-params\">:------------<\/span><span class=\"hljs-params\">:|<\/span> -----:| -----:| \n<span class=\"hljs-params\">| <\/span><span class=\"hljs-number\"><span class=\"hljs-params\">1  |<\/span> Kate         <span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">24 |<\/span> Female\n<span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">2  |<\/span> John         <span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">24 |<\/span> Male\n<span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">3  |<\/span> Bill         <span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">29 |<\/span> Male\n<\/span><\/span><\/span><\/code><\/pre>\n<p>ID\u662fElasticsearch\u81ea\u5efa\u7684\u6587\u6863id\uff0c\u90a3\u4e48Elasticsearch\u5efa\u7acb\u7684\u7d22\u5f15\u5982\u4e0b:<\/p>\n<p><strong>Name:<\/strong><\/p>\n<pre><code class=\"hljs ruby\"><span class=\"hljs-params\">| <\/span><span class=\"hljs-constant\"><span class=\"hljs-params\">Term |<\/span> Posting List <span class=\"hljs-params\">|\n|<\/span> -- <span class=\"hljs-params\">|<\/span><span class=\"hljs-symbol\"><span class=\"hljs-params\">:----<\/span><span class=\"hljs-params\">:|<\/span>\n<span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">Kate |<\/span> <span class=\"hljs-number\">1 <span class=\"hljs-params\">|\n|<\/span> John <span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">2 |<\/span>\n<span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">Bill |<\/span> 3 <span class=\"hljs-params\">|\n<\/span><\/span><\/span><\/span><\/code><\/pre>\n<p><strong>Age:<\/strong><\/p>\n<pre><code class=\"hljs ruby\"><span class=\"hljs-params\">| <\/span><span class=\"hljs-constant\"><span class=\"hljs-params\">Term |<\/span> Posting List <span class=\"hljs-params\">|\n|<\/span> -- <span class=\"hljs-params\">|<\/span><span class=\"hljs-symbol\"><span class=\"hljs-params\">:----<\/span><span class=\"hljs-params\">:|<\/span>\n<span class=\"hljs-params\">| <\/span><span class=\"hljs-number\"><span class=\"hljs-params\">24 |<\/span> [1,2] <span class=\"hljs-params\">|\n|<\/span> 29 <span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">3 |<\/span>\n<\/span><\/span><\/span><\/code><\/pre>\n<p><strong>Sex:<\/strong><\/p>\n<pre><code class=\"hljs ruby\"><span class=\"hljs-params\">| <\/span><span class=\"hljs-constant\"><span class=\"hljs-params\">Term |<\/span> Posting List <span class=\"hljs-params\">|\n|<\/span> -- <span class=\"hljs-params\">|<\/span><span class=\"hljs-symbol\"><span class=\"hljs-params\">:----<\/span><span class=\"hljs-params\">:|<\/span>\n<span class=\"hljs-params\">| <\/span><span class=\"hljs-params\">Female |<\/span> <span class=\"hljs-number\">1 <span class=\"hljs-params\">|\n|<\/span> Male <span class=\"hljs-params\">| [<\/span><span class=\"hljs-params\">2,<\/span><span class=\"hljs-params\">3] |<\/span>\n<\/span><\/span><\/span><\/code><\/pre>\n<h5 id=\"postinglist\">Posting List<\/h5>\n<p>Elasticsearch\u5206\u522b\u4e3a\u6bcf\u4e2afield\u90fd\u5efa\u7acb\u4e86\u4e00\u4e2a\u5012\u6392\u7d22\u5f15\uff0cKate, John, 24, Female\u8fd9\u4e9b\u53ebterm\uff0c\u800c[1,2]\u5c31\u662f<strong>Posting List<\/strong>\u3002Posting list\u5c31\u662f\u4e00\u4e2aint\u7684\u6570\u7ec4\uff0c\u5b58\u50a8\u4e86\u6240\u6709\u7b26\u5408\u67d0\u4e2aterm\u7684\u6587\u6863id\u3002<\/p>\n<p>\u770b\u5230\u8fd9\u91cc\uff0c\u4e0d\u8981\u8ba4\u4e3a\u5c31\u7ed3\u675f\u4e86\uff0c\u7cbe\u5f69\u7684\u90e8\u5206\u624d\u521a\u5f00\u59cb&#8230;<\/p>\n<p>\u901a\u8fc7posting list\u8fd9\u79cd\u7d22\u5f15\u65b9\u5f0f\u4f3c\u4e4e\u53ef\u4ee5\u5f88\u5feb\u8fdb\u884c\u67e5\u627e\uff0c\u6bd4\u5982\u8981\u627eage=24\u7684\u540c\u5b66\uff0c\u7231\u56de\u7b54\u95ee\u9898\u7684\u5c0f\u660e\u9a6c\u4e0a\u5c31\u4e3e\u624b\u56de\u7b54\uff1a\u6211\u77e5\u9053\uff0cid\u662f1\uff0c2\u7684\u540c\u5b66\u3002\u4f46\u662f\uff0c\u5982\u679c\u8fd9\u91cc\u6709\u4e0a\u5343\u4e07\u7684\u8bb0\u5f55\u5462\uff1f\u5982\u679c\u662f\u60f3\u901a\u8fc7name\u6765\u67e5\u627e\u5462\uff1f<\/p>\n<h5 id=\"termdictionary\">Term Dictionary<\/h5>\n<p>Elasticsearch\u4e3a\u4e86\u80fd\u5feb\u901f\u627e\u5230\u67d0\u4e2aterm\uff0c\u5c06\u6240\u6709\u7684term\u6392\u4e2a\u5e8f\uff0c\u4e8c\u5206\u6cd5\u67e5\u627eterm\uff0clogN\u7684\u67e5\u627e\u6548\u7387\uff0c\u5c31\u50cf\u901a\u8fc7\u5b57\u5178\u67e5\u627e\u4e00\u6837\uff0c\u8fd9\u5c31\u662f<strong>Term Dictionary<\/strong>\u3002\u73b0\u5728\u518d\u770b\u8d77\u6765\uff0c\u4f3c\u4e4e\u548c\u4f20\u7edf\u6570\u636e\u5e93\u901a\u8fc7B-Tree\u7684\u65b9\u5f0f\u7c7b\u4f3c\u554a\uff0c\u4e3a\u4ec0\u4e48\u8bf4\u6bd4B-Tree\u7684\u67e5\u8be2\u5feb\u5462\uff1f<\/p>\n<h5 id=\"termindex\">Term Index<\/h5>\n<p>B-Tree\u901a\u8fc7\u51cf\u5c11\u78c1\u76d8\u5bfb\u9053\u6b21\u6570\u6765\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\uff0cElasticsearch\u4e5f\u662f\u91c7\u7528\u540c\u6837\u7684\u601d\u8def\uff0c\u76f4\u63a5\u901a\u8fc7\u5185\u5b58\u67e5\u627eterm\uff0c\u4e0d\u8bfb\u78c1\u76d8\uff0c\u4f46\u662f\u5982\u679cterm\u592a\u591a\uff0cterm dictionary\u4e5f\u4f1a\u5f88\u5927\uff0c\u653e\u5185\u5b58\u4e0d\u73b0\u5b9e\uff0c\u4e8e\u662f\u6709\u4e86<strong>Term Index<\/strong>\uff0c\u5c31\u50cf\u5b57\u5178\u91cc\u7684\u7d22\u5f15\u9875\u4e00\u6837\uff0cA\u5f00\u5934\u7684\u6709\u54ea\u4e9bterm\uff0c\u5206\u522b\u5728\u54ea\u9875\uff0c\u53ef\u4ee5\u7406\u89e3term index\u662f\u4e00\u9897\u6811\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/term-index.png\" alt=\"Alt text\" \/><\/p>\n<p>\u8fd9\u68f5\u6811\u4e0d\u4f1a\u5305\u542b\u6240\u6709\u7684term\uff0c\u5b83\u5305\u542b\u7684\u662fterm\u7684\u4e00\u4e9b\u524d\u7f00\u3002\u901a\u8fc7term index\u53ef\u4ee5\u5feb\u901f\u5730\u5b9a\u4f4d\u5230term dictionary\u7684\u67d0\u4e2aoffset\uff0c\u7136\u540e\u4ece\u8fd9\u4e2a\u4f4d\u7f6e\u518d\u5f80\u540e\u987a\u5e8f\u67e5\u627e\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/index.png\" alt=\"Alt text\" \/><\/p>\n<p>\u6240\u4ee5term index\u4e0d\u9700\u8981\u5b58\u4e0b\u6240\u6709\u7684term\uff0c\u800c\u4ec5\u4ec5\u662f\u4ed6\u4eec\u7684\u4e00\u4e9b\u524d\u7f00\u4e0eTerm Dictionary\u7684block\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u518d\u7ed3\u5408FST(Finite State Transducers)\u7684\u538b\u7f29\u6280\u672f\uff0c\u53ef\u4ee5\u4f7fterm index\u7f13\u5b58\u5230\u5185\u5b58\u4e2d\u3002\u4eceterm index\u67e5\u5230\u5bf9\u5e94\u7684term dictionary\u7684block\u4f4d\u7f6e\u4e4b\u540e\uff0c\u518d\u53bb\u78c1\u76d8\u4e0a\u627eterm\uff0c\u5927\u5927\u51cf\u5c11\u4e86\u78c1\u76d8\u968f\u673a\u8bfb\u7684\u6b21\u6570\u3002<\/p>\n<p>\u8fd9\u65f6\u5019\u7231\u63d0\u95ee\u7684\u5c0f\u660e\u53c8\u4e3e\u624b\u4e86:&#8221;\u90a3\u4e2aFST\u662f\u795e\u9a6c\u4e1c\u4e1c\u554a?&#8221;<\/p>\n<p>\u4e00\u770b\u5c31\u77e5\u9053\u5c0f\u660e\u662f\u4e00\u4e2a\u4e0a\u5927\u5b66\u8bfb\u4e66\u7684\u65f6\u5019\u8ddf\u6211\u4e00\u6837\u4e0d\u8ba4\u771f\u542c\u8bfe\u7684\u5b69\u5b50\uff0c\u6570\u636e\u7ed3\u6784\u8001\u5e08\u4e00\u5b9a\u8bb2\u8fc7\u4ec0\u4e48\u662fFST\u3002\u4f46\u6ca1\u529e\u6cd5\uff0c\u6211\u4e5f\u5fd8\u4e86\uff0c\u8fd9\u91cc\u518d\u8865\u4e0b\u8bfe\uff1a<\/p>\n<blockquote><p>FSTs are finite-state machines that\u00a0<strong>map<\/strong>\u00a0a\u00a0<strong>term (byte sequence)<\/strong>\u00a0to an arbitrary\u00a0<strong>output<\/strong>.<\/p><\/blockquote>\n<p>\u5047\u8bbe\u6211\u4eec\u73b0\u5728\u8981\u5c06mop, moth, pop, star, stop and top(term index\u91cc\u7684term\u524d\u7f00)\u6620\u5c04\u5230\u5e8f\u53f7\uff1a0\uff0c1\uff0c2\uff0c3\uff0c4\uff0c5(term dictionary\u7684block\u4f4d\u7f6e)\u3002\u6700\u7b80\u5355\u7684\u505a\u6cd5\u5c31\u662f\u5b9a\u4e49\u4e2aMap&lt;string, integer=&#8221;&#8221;&gt;\uff0c\u5927\u5bb6\u627e\u5230\u81ea\u5df1\u7684\u4f4d\u7f6e\u5bf9\u5e94\u5165\u5ea7\u5c31\u597d\u4e86\uff0c\u4f46\u4ece\u5185\u5b58\u5360\u7528\u5c11\u7684\u89d2\u5ea6\u60f3\u60f3\uff0c\u6709\u6ca1\u6709\u66f4\u4f18\u7684\u529e\u6cd5\u5462\uff1f\u7b54\u6848\u5c31\u662f\uff1a<strong>FST<\/strong>(<a href=\"http:\/\/www.cs.nyu.edu\/~mohri\/pub\/fla.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">\u7406\u8bba\u4f9d\u636e\u5728\u6b64\uff0c\u4f46\u6211\u76f8\u4fe199%\u7684\u4eba\u4e0d\u4f1a\u8ba4\u771f\u770b\u5b8c\u7684<\/a>)<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/fst.png\" alt=\"Alt text\" \/><\/p>\n<p>\u2b55\ufe0f\u8868\u793a\u4e00\u79cd\u72b6\u6001<\/p>\n<p>&#8211;&gt;\u8868\u793a\u72b6\u6001\u7684\u53d8\u5316\u8fc7\u7a0b\uff0c\u4e0a\u9762\u7684\u5b57\u6bcd\/\u6570\u5b57\u8868\u793a\u72b6\u6001\u53d8\u5316\u548c\u6743\u91cd<\/p>\n<p>\u5c06\u5355\u8bcd\u5206\u6210\u5355\u4e2a\u5b57\u6bcd\u901a\u8fc7\u2b55\ufe0f\u548c&#8211;&gt;\u8868\u793a\u51fa\u6765\uff0c0\u6743\u91cd\u4e0d\u663e\u793a\u3002\u5982\u679c\u2b55\ufe0f\u540e\u9762\u51fa\u73b0\u5206\u652f\uff0c\u5c31\u6807\u8bb0\u6743\u91cd\uff0c\u6700\u540e\u6574\u6761\u8def\u5f84\u4e0a\u7684\u6743\u91cd\u52a0\u8d77\u6765\u5c31\u662f\u8fd9\u4e2a\u5355\u8bcd\u5bf9\u5e94\u7684\u5e8f\u53f7\u3002<\/p>\n<blockquote><p>FSTs are finite-state machines that map a term (<strong>byte sequence<\/strong>) to an arbitrary output.<\/p><\/blockquote>\n<p>FST\u4ee5\u5b57\u8282\u7684\u65b9\u5f0f\u5b58\u50a8\u6240\u6709\u7684term\uff0c\u8fd9\u79cd\u538b\u7f29\u65b9\u5f0f\u53ef\u4ee5\u6709\u6548\u7684\u7f29\u51cf\u5b58\u50a8\u7a7a\u95f4\uff0c\u4f7f\u5f97term index\u8db3\u4ee5\u653e\u8fdb\u5185\u5b58\uff0c\u4f46\u8fd9\u79cd\u65b9\u5f0f\u4e5f\u4f1a\u5bfc\u81f4\u67e5\u627e\u65f6\u9700\u8981\u66f4\u591a\u7684CPU\u8d44\u6e90\u3002<\/p>\n<p>\u540e\u9762\u7684\u66f4\u7cbe\u5f69\uff0c\u770b\u7d2f\u4e86\u7684\u540c\u5b66\u53ef\u4ee5\u559d\u676f\u5496\u5561\u2026\u2026<\/p>\n<hr \/>\n<h4 id=\"\">\u538b\u7f29\u6280\u5de7<\/h4>\n<p>Elasticsearch\u91cc\u9664\u4e86\u4e0a\u9762\u8bf4\u5230\u7528FST\u538b\u7f29term index\u5916\uff0c\u5bf9posting list\u4e5f\u6709\u538b\u7f29\u6280\u5de7\u3002<br \/>\n\u5c0f\u660e\u559d\u5b8c\u5496\u5561\u53c8\u4e3e\u624b\u4e86:&#8221;posting list\u4e0d\u662f\u5df2\u7ecf\u53ea\u5b58\u50a8\u6587\u6863id\u4e86\u5417\uff1f\u8fd8\u9700\u8981\u538b\u7f29\uff1f&#8221;<\/p>\n<p>\u55ef\uff0c\u6211\u4eec\u518d\u770b\u56de\u6700\u5f00\u59cb\u7684\u4f8b\u5b50\uff0c\u5982\u679cElasticsearch\u9700\u8981\u5bf9\u540c\u5b66\u7684\u6027\u522b\u8fdb\u884c\u7d22\u5f15(\u8fd9\u65f6\u4f20\u7edf\u5173\u7cfb\u578b\u6570\u636e\u5e93\u5df2\u7ecf\u54ed\u6655\u5728\u5395\u6240\u2026\u2026)\uff0c\u4f1a\u600e\u6837\uff1f\u5982\u679c\u6709\u4e0a\u5343\u4e07\u4e2a\u540c\u5b66\uff0c\u800c\u4e16\u754c\u4e0a\u53ea\u6709\u7537\/\u5973\u8fd9\u6837\u4e24\u4e2a\u6027\u522b\uff0c\u6bcf\u4e2aposting list\u90fd\u4f1a\u6709\u81f3\u5c11\u767e\u4e07\u4e2a\u6587\u6863id\u3002 Elasticsearch\u662f\u5982\u4f55\u6709\u6548\u7684\u5bf9\u8fd9\u4e9b\u6587\u6863id\u538b\u7f29\u7684\u5462\uff1f<\/p>\n<h5 id=\"frameofreference\">Frame Of Reference<\/h5>\n<blockquote><p>\u589e\u91cf\u7f16\u7801\u538b\u7f29\uff0c\u5c06\u5927\u6570\u53d8\u5c0f\u6570\uff0c\u6309\u5b57\u8282\u5b58\u50a8<\/p><\/blockquote>\n<p>\u9996\u5148\uff0cElasticsearch\u8981\u6c42posting list\u662f\u6709\u5e8f\u7684(\u4e3a\u4e86\u63d0\u9ad8\u641c\u7d22\u7684\u6027\u80fd\uff0c\u518d\u4efb\u6027\u7684\u8981\u6c42\u4e5f\u5f97\u6ee1\u8db3)\uff0c\u8fd9\u6837\u505a\u7684\u4e00\u4e2a\u597d\u5904\u662f\u65b9\u4fbf\u538b\u7f29\uff0c\u770b\u4e0b\u9762\u8fd9\u4e2a\u56fe\u4f8b\uff1a\u00a0<img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/frameOfReference.png\" alt=\"Alt text\" \/><\/p>\n<p>\u5982\u679c\u6570\u5b66\u4e0d\u662f\u4f53\u80b2\u8001\u5e08\u6559\u7684\u8bdd\uff0c\u8fd8\u662f\u6bd4\u8f83\u5bb9\u6613\u770b\u51fa\u6765\u8fd9\u79cd\u538b\u7f29\u6280\u5de7\u7684\u3002<\/p>\n<p>\u539f\u7406\u5c31\u662f\u901a\u8fc7\u589e\u91cf\uff0c\u5c06\u539f\u6765\u7684\u5927\u6570\u53d8\u6210\u5c0f\u6570\u4ec5\u5b58\u50a8\u589e\u91cf\u503c\uff0c\u518d\u7cbe\u6253\u7ec6\u7b97\u6309bit\u6392\u597d\u961f\uff0c\u6700\u540e\u901a\u8fc7\u5b57\u8282\u5b58\u50a8\uff0c\u800c\u4e0d\u662f\u5927\u5927\u54a7\u54a7\u7684\u5c3d\u7ba1\u662f2\u4e5f\u662f\u7528int(4\u4e2a\u5b57\u8282)\u6765\u5b58\u50a8\u3002<\/p>\n<h5 id=\"roaringbitmaps\">Roaring bitmaps<\/h5>\n<p>\u8bf4\u5230Roaring bitmaps\uff0c\u5c31\u5fc5\u987b\u5148\u4ecebitmap\u8bf4\u8d77\u3002Bitmap\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5047\u8bbe\u6709\u67d0\u4e2aposting list\uff1a<\/p>\n<p>[1,3,4,7,10]<\/p>\n<p>\u5bf9\u5e94\u7684bitmap\u5c31\u662f\uff1a<\/p>\n<p>[1,0,1,1,0,0,1,0,0,1]<\/p>\n<p>\u975e\u5e38\u76f4\u89c2\uff0c\u75280\/1\u8868\u793a\u67d0\u4e2a\u503c\u662f\u5426\u5b58\u5728\uff0c\u6bd4\u598210\u8fd9\u4e2a\u503c\u5c31\u5bf9\u5e94\u7b2c10\u4f4d\uff0c\u5bf9\u5e94\u7684bit\u503c\u662f1\uff0c\u8fd9\u6837\u7528\u4e00\u4e2a\u5b57\u8282\u5c31\u53ef\u4ee5\u4ee3\u88688\u4e2a\u6587\u6863id\uff0c\u65e7\u7248\u672c(5.0\u4e4b\u524d)\u7684Lucene\u5c31\u662f\u7528\u8fd9\u6837\u7684\u65b9\u5f0f\u6765\u538b\u7f29\u7684\uff0c\u4f46\u8fd9\u6837\u7684\u538b\u7f29\u65b9\u5f0f\u4ecd\u7136\u4e0d\u591f\u9ad8\u6548\uff0c\u5982\u679c\u67091\u4ebf\u4e2a\u6587\u6863\uff0c\u90a3\u4e48\u9700\u898112.5MB\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u8fd9\u4ec5\u4ec5\u662f\u5bf9\u5e94\u4e00\u4e2a\u7d22\u5f15\u5b57\u6bb5(\u6211\u4eec\u5f80\u5f80\u4f1a\u6709\u5f88\u591a\u4e2a\u7d22\u5f15\u5b57\u6bb5)\u3002\u4e8e\u662f\u6709\u4eba\u60f3\u51fa\u4e86Roaring bitmaps\u8fd9\u6837\u66f4\u9ad8\u6548\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<p>Bitmap\u7684\u7f3a\u70b9\u662f\u5b58\u50a8\u7a7a\u95f4\u968f\u7740\u6587\u6863\u4e2a\u6570\u7ebf\u6027\u589e\u957f\uff0cRoaring bitmaps\u9700\u8981\u6253\u7834\u8fd9\u4e2a\u9b54\u5492\u5c31\u4e00\u5b9a\u8981\u7528\u5230\u67d0\u4e9b\u6307\u6570\u7279\u6027\uff1a<\/p>\n<p>\u5c06posting list\u6309\u716765535\u4e3a\u754c\u9650\u5206\u5757\uff0c\u6bd4\u5982\u7b2c\u4e00\u5757\u6240\u5305\u542b\u7684\u6587\u6863id\u8303\u56f4\u57280~65535\u4e4b\u95f4\uff0c\u7b2c\u4e8c\u5757\u7684id\u8303\u56f4\u662f65536~131071\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002\u518d\u7528&lt;\u5546\uff0c\u4f59\u6570&gt;\u7684\u7ec4\u5408\u8868\u793a\u6bcf\u4e00\u7ec4id\uff0c\u8fd9\u6837\u6bcf\u7ec4\u91cc\u7684id\u8303\u56f4\u90fd\u57280~65535\u5185\u4e86\uff0c\u5269\u4e0b\u7684\u5c31\u597d\u529e\u4e86\uff0c\u65e2\u7136\u6bcf\u7ec4id\u4e0d\u4f1a\u53d8\u5f97\u65e0\u9650\u5927\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7\u6700\u6709\u6548\u7684\u65b9\u5f0f\u5bf9\u8fd9\u91cc\u7684id\u5b58\u50a8\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/Roaringbitmaps.png\" alt=\"Alt text\" \/><\/p>\n<p>\u7ec6\u5fc3\u7684\u5c0f\u660e\u8fd9\u65f6\u5019\u53c8\u4e3e\u624b\u4e86:&#8221;\u4e3a\u4ec0\u4e48\u662f\u4ee565535\u4e3a\u754c\u9650?&#8221;<\/p>\n<p>\u7a0b\u5e8f\u5458\u7684\u4e16\u754c\u91cc\u9664\u4e861024\u5916\uff0c65535\u4e5f\u662f\u4e00\u4e2a\u7ecf\u5178\u503c\uff0c\u56e0\u4e3a\u5b83=2^16-1\uff0c\u6b63\u597d\u662f\u75282\u4e2a\u5b57\u8282\u80fd\u8868\u793a\u7684\u6700\u5927\u6570\uff0c\u4e00\u4e2ashort\u7684\u5b58\u50a8\u5355\u4f4d\uff0c\u6ce8\u610f\u5230\u4e0a\u56fe\u91cc\u7684\u6700\u540e\u4e00\u884c\u201cIf a block has more than 4096 values, encode as a bit set, and otherwise as a simple array using 2 bytes per value\u201d\uff0c\u5982\u679c\u662f\u5927\u5757\uff0c\u7528\u8282\u7701\u70b9\u7528bitset\u5b58\uff0c\u5c0f\u5757\u5c31\u8c6a\u723d\u70b9\uff0c2\u4e2a\u5b57\u8282\u6211\u4e5f\u4e0d\u8ba1\u8f83\u4e86\uff0c\u7528\u4e00\u4e2ashort[]\u5b58\u7740\u65b9\u4fbf\u3002<\/p>\n<p>\u90a3\u4e3a\u4ec0\u4e48\u75284096\u6765\u533a\u5206\u5927\u5757\u8fd8\u662f\u5c0f\u5757\u5462\uff1f<\/p>\n<p>\u4e2a\u4eba\u7406\u89e3\uff1a\u90fd\u8bf4\u7a0b\u5e8f\u5458\u7684\u4e16\u754c\u662f\u4e8c\u8fdb\u5236\u7684\uff0c4096*2bytes \uff1d 8192bytes &lt; 1KB, \u78c1\u76d8\u4e00\u6b21\u5bfb\u9053\u53ef\u4ee5\u987a\u5e8f\u628a\u4e00\u4e2a\u5c0f\u5757\u7684\u5185\u5bb9\u90fd\u8bfb\u51fa\u6765\uff0c\u518d\u5927\u4e00\u4f4d\u5c31\u8d85\u8fc71KB\u4e86\uff0c\u9700\u8981\u4e24\u6b21\u8bfb\u3002<\/p>\n<hr \/>\n<h4 id=\"\">\u8054\u5408\u7d22\u5f15<\/h4>\n<p>\u4e0a\u9762\u8bf4\u4e86\u534a\u5929\u90fd\u662f\u5355field\u7d22\u5f15\uff0c\u5982\u679c\u591a\u4e2afield\u7d22\u5f15\u7684\u8054\u5408\u67e5\u8be2\uff0c\u5012\u6392\u7d22\u5f15\u5982\u4f55\u6ee1\u8db3\u5feb\u901f\u67e5\u8be2\u7684\u8981\u6c42\u5462\uff1f<\/p>\n<ul>\n<li>\u5229\u7528\u8df3\u8868(Skip list)\u7684\u6570\u636e\u7ed3\u6784\u5feb\u901f\u505a\u201c\u4e0e\u201d\u8fd0\u7b97\uff0c\u6216\u8005<\/li>\n<li>\u5229\u7528\u4e0a\u9762\u63d0\u5230\u7684bitset\u6309\u4f4d\u201c\u4e0e\u201d<\/li>\n<\/ul>\n<p>\u5148\u770b\u770b\u8df3\u8868\u7684\u6570\u636e\u7ed3\u6784\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/skiplist.png\" alt=\"Alt text\" \/><\/p>\n<p>\u5c06\u4e00\u4e2a\u6709\u5e8f\u94fe\u8868level0\uff0c\u6311\u51fa\u5176\u4e2d\u51e0\u4e2a\u5143\u7d20\u5230level1\u53calevel2\uff0c\u6bcf\u4e2alevel\u8d8a\u5f80\u4e0a\uff0c\u9009\u51fa\u6765\u7684\u6307\u9488\u5143\u7d20\u8d8a\u5c11\uff0c\u67e5\u627e\u65f6\u4f9d\u6b21\u4ece\u9ad8level\u5f80\u4f4e\u67e5\u627e\uff0c\u6bd4\u598255\uff0c\u5148\u627e\u5230level2\u768431\uff0c\u518d\u627e\u5230level1\u768447\uff0c\u6700\u540e\u627e\u523055\uff0c\u4e00\u51713\u6b21\u67e5\u627e\uff0c\u67e5\u627e\u6548\u7387\u548c2\u53c9\u6811\u7684\u6548\u7387\u76f8\u5f53\uff0c\u4f46\u4e5f\u662f\u7528\u4e86\u4e00\u5b9a\u7684\u7a7a\u95f4\u5197\u4f59\u6765\u6362\u53d6\u7684\u3002<\/p>\n<p>\u5047\u8bbe\u6709\u4e0b\u9762\u4e09\u4e2aposting list\u9700\u8981\u8054\u5408\u7d22\u5f15\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/Neway6655\/neway6655.github.com\/master\/images\/elasticsearch-study\/combineIndex.png\" alt=\"Alt text\" \/><\/p>\n<p>\u5982\u679c\u4f7f\u7528\u8df3\u8868\uff0c\u5bf9\u6700\u77ed\u7684posting list\u4e2d\u7684\u6bcf\u4e2aid\uff0c\u9010\u4e2a\u5728\u53e6\u5916\u4e24\u4e2aposting list\u4e2d\u67e5\u627e\u770b\u662f\u5426\u5b58\u5728\uff0c\u6700\u540e\u5f97\u5230\u4ea4\u96c6\u7684\u7ed3\u679c\u3002<\/p>\n<p>\u5982\u679c\u4f7f\u7528bitset\uff0c\u5c31\u5f88\u76f4\u89c2\u4e86\uff0c\u76f4\u63a5\u6309\u4f4d\u4e0e\uff0c\u5f97\u5230\u7684\u7ed3\u679c\u5c31\u662f\u6700\u540e\u7684\u4ea4\u96c6\u3002<\/p>\n<hr \/>\n<h3 id=\"\">\u603b\u7ed3\u548c\u601d\u8003<\/h3>\n<p>Elasticsearch\u7684\u7d22\u5f15\u601d\u8def:<\/p>\n<blockquote><p>\u5c06\u78c1\u76d8\u91cc\u7684\u4e1c\u897f\u5c3d\u91cf\u642c\u8fdb\u5185\u5b58\uff0c\u51cf\u5c11\u78c1\u76d8\u968f\u673a\u8bfb\u53d6\u6b21\u6570(\u540c\u65f6\u4e5f\u5229\u7528\u78c1\u76d8\u987a\u5e8f\u8bfb\u7279\u6027)\uff0c\u7ed3\u5408\u5404\u79cd\u5947\u6280\u6deb\u5de7\u7684\u538b\u7f29\u7b97\u6cd5\uff0c\u7528\u53ca\u5176\u82db\u523b\u7684\u6001\u5ea6\u4f7f\u7528\u5185\u5b58\u3002<\/p><\/blockquote>\n<p>\u6240\u4ee5\uff0c\u5bf9\u4e8e\u4f7f\u7528Elasticsearch\u8fdb\u884c\u7d22\u5f15\u65f6\u9700\u8981\u6ce8\u610f:<\/p>\n<ul>\n<li>\u4e0d\u9700\u8981\u7d22\u5f15\u7684\u5b57\u6bb5\uff0c\u4e00\u5b9a\u8981\u660e\u786e\u5b9a\u4e49\u51fa\u6765\uff0c\u56e0\u4e3a\u9ed8\u8ba4\u662f\u81ea\u52a8\u5efa\u7d22\u5f15\u7684<\/li>\n<li>\u540c\u6837\u7684\u9053\u7406\uff0c\u5bf9\u4e8eString\u7c7b\u578b\u7684\u5b57\u6bb5\uff0c\u4e0d\u9700\u8981analysis\u7684\u4e5f\u9700\u8981\u660e\u786e\u5b9a\u4e49\u51fa\u6765\uff0c\u56e0\u4e3a\u9ed8\u8ba4\u4e5f\u662f\u4f1aanalysis\u7684<\/li>\n<li>\u9009\u62e9\u6709\u89c4\u5f8b\u7684ID\u5f88\u91cd\u8981\uff0c\u968f\u673a\u6027\u592a\u5927\u7684ID(\u6bd4\u5982java\u7684UUID)\u4e0d\u5229\u4e8e\u67e5\u8be2<\/li>\n<\/ul>\n<p>\u5173\u4e8e\u6700\u540e\u4e00\u70b9\uff0c\u4e2a\u4eba\u8ba4\u4e3a\u6709\u591a\u4e2a\u56e0\u7d20:<\/p>\n<p>\u5176\u4e2d\u4e00\u4e2a(\u4e5f\u8bb8\u4e0d\u662f\u6700\u91cd\u8981\u7684)\u56e0\u7d20: \u4e0a\u9762\u770b\u5230\u7684\u538b\u7f29\u7b97\u6cd5\uff0c\u90fd\u662f\u5bf9Posting list\u91cc\u7684\u5927\u91cfID\u8fdb\u884c\u538b\u7f29\u7684\uff0c\u90a3\u5982\u679cID\u662f\u987a\u5e8f\u7684\uff0c\u6216\u8005\u662f\u6709\u516c\u5171\u524d\u7f00\u7b49\u5177\u6709\u4e00\u5b9a\u89c4\u5f8b\u6027\u7684ID\uff0c\u538b\u7f29\u6bd4\u4f1a\u6bd4\u8f83\u9ad8\uff1b<\/p>\n<p>\u53e6\u5916\u4e00\u4e2a\u56e0\u7d20: \u53ef\u80fd\u662f\u6700\u5f71\u54cd\u67e5\u8be2\u6027\u80fd\u7684\uff0c\u5e94\u8be5\u662f\u6700\u540e\u901a\u8fc7Posting list\u91cc\u7684ID\u5230\u78c1\u76d8\u4e2d\u67e5\u627eDocument\u4fe1\u606f\u7684\u90a3\u6b65\uff0c\u56e0\u4e3aElasticsearch\u662f\u5206Segment\u5b58\u50a8\u7684\uff0c\u6839\u636eID\u8fd9\u4e2a\u5927\u8303\u56f4\u7684Term\u5b9a\u4f4d\u5230Segment\u7684\u6548\u7387\u76f4\u63a5\u5f71\u54cd\u4e86\u6700\u540e\u67e5\u8be2\u7684\u6027\u80fd\uff0c\u5982\u679cID\u662f\u6709\u89c4\u5f8b\u7684\uff0c\u53ef\u4ee5\u5feb\u901f\u8df3\u8fc7\u4e0d\u5305\u542b\u8be5ID\u7684Segment\uff0c\u4ece\u800c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u78c1\u76d8\u8bfb\u6b21\u6570\uff0c\u5177\u4f53\u53ef\u4ee5\u53c2\u8003\u8fd9\u7bc7<a href=\"http:\/\/blog.mikemccandless.com\/2014\/05\/choosing-fast-unique-identifier-uuid.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u5982\u4f55\u9009\u62e9\u4e00\u4e2a\u9ad8\u6548\u7684\u5168\u5c40ID\u65b9\u6848<\/a>(\u8bc4\u8bba\u4e5f\u5f88\u7cbe\u5f69)<\/p>\n<p>\u8f6c\uff1ahttp:\/\/blog.pengqiuyuan.com\/ji-chu-jie-shao-ji-suo-yin-yuan-li-fen-xi\/<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6c\u8f7d\u81ea\uff1ahttps:\/\/www.cnblogs.com\/dreamroute\/p\/8484457.h &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"series":[],"class_list":["post-521","post","type-post","status-publish","format-standard","hentry","category-programmers"],"_links":{"self":[{"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/posts\/521"}],"collection":[{"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=521"}],"version-history":[{"count":1,"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions"}],"predecessor-version":[{"id":522,"href":"https:\/\/fick707.com\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions\/522"}],"wp:attachment":[{"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=521"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/fick707.com\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}