{"id":191064,"date":"2024-11-12T16:18:22","date_gmt":"2024-11-12T08:18:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/191064\/"},"modified":"2024-11-12T16:18:24","modified_gmt":"2024-11-12T08:18:24","slug":"%e8%a9%b3%e8%a7%a3cassandra%e6%95%b8%e6%93%9a%e6%a8%a1%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/191064\/","title":{"rendered":"\u8a73\u89e3Cassandra\u6578\u64da\u6a21\u578b"},"content":{"rendered":"<h1 id=\"%e8%a9%b3%e8%a7%a3cassandra%e6%95%b8%e6%93%9a%e6%a8%a1%e5%9e%8b-CLLpjBaIBy\">\u8a73\u89e3Cassandra\u6578\u64da\u6a21\u578b<\/h1>\n<p>Apache Cassandra\u662f\u4e00\u500b\u5206\u6563\u5f0f\u7684NoSQL\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u5c08\u70ba\u8655\u7406\u5927\u91cf\u6578\u64da\u800c\u8a2d\u8a08\u3002\u5b83\u7684\u6578\u64da\u6a21\u578b\u8207\u50b3\u7d71\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u6709\u8457\u986f\u8457\u7684\u4e0d\u540c\uff0c\u9019\u4f7f\u5f97Cassandra\u5728\u67d0\u4e9b\u61c9\u7528\u5834\u666f\u4e2d\u8868\u73fe\u51fa\u8272\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eCassandra\u7684\u6578\u64da\u6a21\u578b\uff0c\u5305\u62ec\u5176\u67b6\u69cb\u3001\u6578\u64da\u7d50\u69cb\u53ca\u4f7f\u7528\u6848\u4f8b\u3002<\/p>\n<h2 id=\"cassandra%e7%9a%84%e6%9e%b6%e6%a7%8b-CLLpjBaIBy\">Cassandra\u7684\u67b6\u69cb<\/h2>\n<p>Cassandra\u7684\u67b6\u69cb\u57fa\u65bc\u5206\u6563\u5f0f\u7cfb\u7d71\uff0c\u9019\u610f\u5473\u8457\u6578\u64da\u53ef\u4ee5\u5728\u591a\u500b\u7bc0\u9ede\u4e4b\u9593\u5206\u4f48\u3002\u6bcf\u500b\u7bc0\u9ede\u90fd\u662f\u5e73\u7b49\u7684\uff0c\u4e26\u4e14\u53ef\u4ee5\u96a8\u6642\u6dfb\u52a0\u6216\u522a\u9664\uff0c\u9019\u4f7f\u5f97Cassandra\u5177\u5099\u9ad8\u53ef\u7528\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002Cassandra\u4f7f\u7528\u4e86\u4e00\u7a2e\u7a31\u70ba\u201c\u5217\u65cf\u201d\u7684\u6578\u64da\u7d50\u69cb\uff0c\u9019\u8207\u50b3\u7d71\u7684\u884c\u548c\u5217\u7684\u6982\u5ff5\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e6%a8%a1%e5%9e%8b%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-CLLpjBaIBy\">\u6578\u64da\u6a21\u578b\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Cassandra\u7684\u6578\u64da\u6a21\u578b\u4e3b\u8981\u7531\u4ee5\u4e0b\u5e7e\u500b\u6982\u5ff5\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>Keyspace<\/strong>\uff1aKeyspace\u662fCassandra\u6578\u64da\u6a21\u578b\u7684\u6700\u9ad8\u5c64\u7d1a\uff0c\u985e\u4f3c\u65bc\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u5eab\u3002\u5b83\u5b9a\u7fa9\u4e86\u6578\u64da\u7684\u5206\u4f48\u7b56\u7565\u548c\u8907\u88fd\u56e0\u5b50\u3002<\/li>\n<li><strong>Column Family<\/strong>\uff1aColumn Family\u662fCassandra\u7684\u57fa\u672c\u6578\u64da\u7d50\u69cb\uff0c\u985e\u4f3c\u65bc\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\u7684\u8868\u3002\u6bcf\u500bColumn Family\u53ef\u4ee5\u5305\u542b\u591a\u500b\u884c\u548c\u5217\u3002<\/li>\n<li><strong>Row<\/strong>\uff1a\u6bcf\u500bRow\u7531\u4e00\u500b\u552f\u4e00\u7684Row Key\u6a19\u8b58\uff0c\u4e26\u4e14\u53ef\u4ee5\u5305\u542b\u591a\u500b\u5217\u3002Row Key\u7684\u9078\u64c7\u5c0d\u65bc\u6578\u64da\u7684\u67e5\u8a62\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002<\/li>\n<li><strong>Column<\/strong>\uff1aColumn\u662fRow\u4e2d\u7684\u4e00\u500b\u6578\u64da\u55ae\u4f4d\uff0c\u7531\u5217\u540d\u3001\u5217\u503c\u548c\u6642\u9593\u6233\u7d44\u6210\u3002Cassandra\u652f\u6301\u52d5\u614b\u5217\uff0c\u9019\u610f\u5473\u8457\u4e0d\u540c\u7684Row\u53ef\u4ee5\u64c1\u6709\u4e0d\u540c\u7684\u5217\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e6%a8%a1%e5%9e%8b%e7%9a%84%e8%a8%ad%e8%a8%88%e5%8e%9f%e5%89%87-CLLpjBaIBy\">\u6578\u64da\u6a21\u578b\u7684\u8a2d\u8a08\u539f\u5247<\/h2>\n<p>\u5728\u8a2d\u8a08Cassandra\u7684\u6578\u64da\u6a21\u578b\u6642\uff0c\u6709\u5e7e\u500b\u91cd\u8981\u7684\u539f\u5247\u9700\u8981\u9075\u5faa\uff1a<\/p>\n<ul>\n<li><strong>\u67e5\u8a62\u9a45\u52d5\u8a2d\u8a08<\/strong>\uff1aCassandra\u7684\u6578\u64da\u6a21\u578b\u61c9\u8a72\u6839\u64da\u61c9\u7528\u7a0b\u5e8f\u7684\u67e5\u8a62\u9700\u6c42\u4f86\u8a2d\u8a08\uff0c\u800c\u4e0d\u662f\u50c5\u50c5\u57fa\u65bc\u6578\u64da\u7684\u7d50\u69cb\u3002\u9019\u610f\u5473\u8457\u5728\u8a2d\u8a08Column 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id=\"%e5%af%a6%e9%9a%9b%e6%a1%88%e4%be%8b-CLLpjBaIBy\">\u5be6\u969b\u6848\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6b63\u5728\u8a2d\u8a08\u4e00\u500b\u793e\u4ea4\u5a92\u9ad4\u61c9\u7528\uff0c\u8a72\u61c9\u7528\u9700\u8981\u5132\u5b58\u7528\u6236\u7684\u5e16\u5b50\u548c\u8a55\u8ad6\u3002\u53ef\u4ee5\u8a2d\u8a08\u5982\u4e0b\u7684\u6578\u64da\u6a21\u578b\uff1a<\/p>\n<pre><code>\nCREATE KEYSPACE social_media WITH REPLICATION = { 'class': 'SimpleStrategy', 'replication_factor': 3 };\n\nCREATE TABLE posts (\n    post_id UUID PRIMARY KEY,\n    user_id UUID,\n    content TEXT,\n    created_at TIMESTAMP\n);\n\nCREATE TABLE comments (\n    comment_id UUID,\n    post_id UUID,\n    user_id UUID,\n    content TEXT,\n    created_at TIMESTAMP,\n    PRIMARY KEY (post_id, comment_id)\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u5169\u500bColumn Family\uff1aposts\u548ccomments\u3002\u6bcf\u500b\u5e16\u5b50\u90fd\u6709\u4e00\u500b\u552f\u4e00\u7684post_id\uff0c\u800c\u6bcf\u500b\u8a55\u8ad6\u5247\u8207\u5176\u5c0d\u61c9\u7684post_id\u76f8\u95dc\u806f\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97\u6211\u5011\u80fd\u5920\u5feb\u901f\u67e5\u8a62\u7279\u5b9a\u5e16\u5b50\u7684\u6240\u6709\u8a55\u8ad6\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CLLpjBaIBy\">\u7e3d\u7d50<\/h2>\n<p>Cassandra\u7684\u6578\u64da\u6a21\u578b\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9748\u6d3b\u4e14\u9ad8\u6548\u7684\u65b9\u5f0f\u4f86\u8655\u7406\u5927\u898f\u6a21\u6578\u64da\u3002\u901a\u904e\u7406\u89e3\u5176\u67b6\u69cb\u548c\u8a2d\u8a08\u539f\u5247\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u5229\u7528Cassandra\u4f86\u6eff\u8db3\u61c9\u7528\u9700\u6c42\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72Cassandra\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eCassandra\u6578\u64da\u6a21\u578b\uff0c\u4e86\u89e3\u5176\u67b6\u69cb\u3001\u8a2d\u8a08\u539f\u5247\u53ca\u6700\u4f73\u5be6\u8e10\uff0c\u52a9\u60a8\u9ad8\u6548\u7ba1\u7406\u5927\u898f\u6a21\u6578\u64da\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-191064","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=191064"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191064\/revisions"}],"predecessor-version":[{"id":191065,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191064\/revisions\/191065"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=191064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=191064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=191064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}