{"id":63890,"date":"2024-10-14T03:20:14","date_gmt":"2024-10-13T19:20:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/63890\/"},"modified":"2024-10-14T03:20:14","modified_gmt":"2024-10-13T19:20:14","slug":"mongodb%e5%ae%9a%e6%99%82%e6%b8%85%e9%99%a4%e6%95%b8%e6%93%9a%ef%bc%8c%e8%bc%95%e9%ac%86%e8%a7%a3%e6%b1%ba%e5%ba%ab%e5%ae%b9%e9%87%8f%e5%95%8f%e9%a1%8c-mongo%e6%8c%89%e6%99%82%e9%96%93%e5%88%aa","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/63890\/","title":{"rendered":"MongoDB\u5b9a\u6642\u6e05\u9664\u6578\u64da\uff0c\u8f15\u9b06\u89e3\u6c7a\u5eab\u5bb9\u91cf\u554f\u984c (mongo\u6309\u6642\u9593\u522a\u9664\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"mongodb%e5%ae%9a%e6%99%82%e6%b8%85%e9%99%a4%e6%95%b8%e6%93%9a%ef%bc%8c%e8%bc%95%e9%ac%86%e8%a7%a3%e6%b1%ba%e5%ba%ab%e5%ae%b9%e9%87%8f%e5%95%8f%e9%a1%8c-yxOcfEwPPz\">MongoDB\u5b9a\u6642\u6e05\u9664\u6578\u64da\uff0c\u8f15\u9b06\u89e3\u6c7a\u5eab\u5bb9\u91cf\u554f\u984c<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002MongoDB\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684NoSQL\u6578\u64da\u5eab\uff0c\u56e0\u5176\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u4f7f\u7528\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u548c\u6e05\u7406\u6578\u64da\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MongoDB\u4e2d\u5be6\u73fe\u5b9a\u6642\u6e05\u9664\u6578\u64da\uff0c\u4ee5\u8f15\u9b06\u89e3\u6c7a\u5eab\u5bb9\u91cf\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%ae%9a%e6%99%82%e6%b8%85%e9%99%a4%e6%95%b8%e6%93%9a%ef%bc%9f-yxOcfEwPPz\">\u70ba\u4ec0\u9ebc\u9700\u8981\u5b9a\u6642\u6e05\u9664\u6578\u64da\uff1f<\/h2>\n<p>\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u6578\u64da\u5eab\u4e2d\u53ef\u80fd\u6703\u7a4d\u7d2f\u5927\u91cf\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\u3002\u9019\u4e9b\u6578\u64da\u4e0d\u50c5\u4f54\u7528\u5b58\u5132\u7a7a\u9593\uff0c\u9084\u53ef\u80fd\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u5b9a\u6642\u6e05\u9664\u6578\u64da\u53ef\u4ee5\u5e6b\u52a9\uff1a<\/p>\n<ul>\n<li>\u91cb\u653e\u5b58\u5132\u7a7a\u9593\uff0c\u964d\u4f4e\u904b\u884c\u6210\u672c\u3002<\/li>\n<li>\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u6e1b\u5c11\u67e5\u8a62\u5ef6\u9072\u3002<\/li>\n<li>\u4fdd\u6301\u6578\u64da\u5eab\u7684\u6574\u6f54\uff0c\u4fbf\u65bc\u7ba1\u7406\u548c\u7dad\u8b77\u3002<\/li>\n<\/ul>\n<h2 id=\"mongodb%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e6%b8%85%e9%99%a4%e7%ad%96%e7%95%a5-yxOcfEwPPz\">MongoDB\u4e2d\u7684\u6578\u64da\u6e05\u9664\u7b56\u7565<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u6709\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u5be6\u73fe\u5b9a\u6642\u6e05\u9664\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8ttl%e7%b4%a2%e5%bc%95-yxOcfEwPPz\">1. \u4f7f\u7528TTL\u7d22\u5f15<\/h3>\n<p>MongoDB\u63d0\u4f9b\u4e86TTL\uff08Time-To-Live\uff09\u7d22\u5f15\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u81ea\u52d5\u522a\u9664\u904e\u671f\u7684\u6587\u6a94\u3002\u9019\u662f\u4e00\u7a2e\u975e\u5e38\u65b9\u4fbf\u7684\u65b9\u5f0f\uff0c\u7279\u5225\u9069\u5408\u9700\u8981\u5b9a\u671f\u6e05\u9664\u7684\u6578\u64da\u3002<\/p>\n<pre><code>db.collection.createIndex({ \"createdAt\": 1 }, { expireAfterSeconds: 3600 })<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u78bc\u5c07\u5728\u6587\u6a94\u7684\u201ccreatedAt\u201d\u5b57\u6bb5\u4e0a\u5275\u5efa\u4e00\u500bTTL\u7d22\u5f15\uff0c\u4e26\u5728\u6587\u6a94\u5275\u5efa\u5f8c\u4e00\u5c0f\u6642\u81ea\u52d5\u522a\u9664\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e5%ae%9a%e6%99%82%e4%bb%bb%e5%8b%99-yxOcfEwPPz\">2. \u4f7f\u7528\u5b9a\u6642\u4efb\u52d9<\/h3>\n<p>\u5982\u679c\u9700\u8981\u66f4\u9748\u6d3b\u7684\u6e05\u9664\u7b56\u7565\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5b9a\u6642\u4efb\u52d9\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u64cd\u4f5c\u7cfb\u7d71\u7684\u8a08\u5283\u4efb\u52d9\u529f\u80fd\uff08\u5982cron\uff09\u4f86\u5be6\u73fe\u3002<\/p>\n<pre><code>0 * * * * mongo --eval \"db.collection.remove({ 'createdAt': { $lt: new Date(new Date() - 3600 * 1000) } })\" database_name<\/code><\/pre>\n<p>\u4e0a\u8ff0\u547d\u4ee4\u5c07\u6bcf\u5c0f\u6642\u904b\u884c\u4e00\u6b21\uff0c\u522a\u9664\u201ccreatedAt\u201d\u5b57\u6bb5\u65e9\u65bc\u4e00\u5c0f\u6642\u7684\u6587\u6a94\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8mongodb%e7%9a%84aggregation-framework-yxOcfEwPPz\">3. \u4f7f\u7528MongoDB\u7684Aggregation Framework<\/h3>\n<p>\u5c0d\u65bc\u66f4\u8907\u96dc\u7684\u6578\u64da\u6e05\u9664\u9700\u6c42\uff0c\u53ef\u4ee5\u4f7f\u7528MongoDB\u7684Aggregation Framework\u4f86\u7be9\u9078\u548c\u522a\u9664\u6578\u64da\u3002<\/p>\n<pre><code>db.collection.aggregate([\n    { $match: { 'createdAt': { $lt: new Date(new Date() - 3600 * 1000) } } },\n    { $out: 'temp_collection' }\n]);\n\ndb.temp_collection.drop();<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u9996\u5148\u7be9\u9078\u51fa\u904e\u671f\u7684\u6587\u6a94\uff0c\u7136\u5f8c\u5c07\u5176\u8f38\u51fa\u5230\u4e00\u500b\u81e8\u6642\u96c6\u5408\u4e2d\uff0c\u6700\u5f8c\u522a\u9664\u81e8\u6642\u96c6\u5408\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-yxOcfEwPPz\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u5be6\u65bd\u5b9a\u6642\u6e05\u9664\u6578\u64da\u7684\u7b56\u7565\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u4e0d\u6703\u522a\u9664\u91cd\u8981\u6578\u64da\uff0c\u5efa\u8b70\u5728\u6e05\u9664\u524d\u9032\u884c\u5099\u4efd\u3002<\/li>\n<li>\u5b9a\u671f\u6aa2\u67e5\u6e05\u9664\u7b56\u7565\u7684\u6548\u679c\uff0c\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9032\u884c\u8abf\u6574\u3002<\/li>\n<li>\u8003\u616e\u6578\u64da\u7684\u5408\u898f\u6027\u548c\u96b1\u79c1\u554f\u984c\uff0c\u78ba\u4fdd\u9075\u5faa\u76f8\u95dc\u6cd5\u5f8b\u6cd5\u898f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-yxOcfEwPPz\">\u7e3d\u7d50<\/h2>\n<p>\u5b9a\u6642\u6e05\u9664\u6578\u64da\u662f\u7ba1\u7406MongoDB\u6578\u64da\u5eab\u7684\u91cd\u8981\u7b56\u7565\uff0c\u53ef\u4ee5\u6709\u6548\u89e3\u6c7a\u5eab\u5bb9\u91cf\u554f\u984c\u3002\u901a\u904e\u4f7f\u7528TTL\u7d22\u5f15\u3001\u5b9a\u6642\u4efb\u52d9\u548cAggregation Framework\u7b49\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u9748\u6d3b\u5730\u7ba1\u7406\u6578\u64da\uff0c\u4fdd\u6301\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6574\u6f54\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">VPS<\/a>\u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u63d0\u5347\u696d\u52d9\u6548\u7387\u7684\u95dc\u9375\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b9a\u6642\u6e05\u9664MongoDB\u6578\u64da\uff0c\u8f15\u9b06\u7ba1\u7406\u5eab\u5bb9\u91cf\uff0c\u63d0\u5347\u6027\u80fd\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u904b\u884c\u9ad8\u6548\u7121\u963b\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-63890","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63890","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=63890"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63890\/revisions"}],"predecessor-version":[{"id":63891,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63890\/revisions\/63891"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=63890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=63890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=63890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}