{"id":21528,"date":"2024-01-02T10:53:25","date_gmt":"2024-01-02T10:53:25","guid":{"rendered":"https:\/\/server.hk\/blog\/21528\/"},"modified":"2024-11-14T10:31:14","modified_gmt":"2024-11-14T02:31:14","slug":"mongodb-glossary-oplog","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21528\/","title":{"rendered":"MongoDB \u8a5e\u5f59\u8868 &#8211; \u64cd\u4f5c\u65e5\u8a8c"},"content":{"rendered":"<h1 id=\"mongodb-glossary-oplog-kQsiaqXiMQ\">MongoDB \u8a5e\u5f59\u8868 &#8211; \u64cd\u4f5c\u65e5\u8a8c\uff08Oplog\uff09<\/h1>\n<p>\u5728 MongoDB \u7684\u4e16\u754c\u4e2d\uff0c\u300coplog\u300d\u6307\u7684\u662f\u300c\u64cd\u4f5c\u65e5\u8a8c\u300d\u3002\u5b83\u662f MongoDB \u8907\u88fd\u904e\u7a0b\u4e2d\u7684\u4e00\u500b\u95dc\u9375\u7d44\u4ef6\uff0c\u5141\u8a31\u5728\u5206\u4f48\u5f0f\u6578\u64da\u5eab\u74b0\u5883\u4e2d\u8de8\u591a\u500b\u7bc0\u9ede\u9032\u884c\u6578\u64da\u540c\u6b65\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u8a73\u7d30\u63a2\u8a0e oplog \u7684\u6982\u5ff5\u3001\u7528\u9014\u4ee5\u53ca\u5176\u904b\u4f5c\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"what-is-the-oplog-kQsiaqXiMQ\">\u4ec0\u9ebc\u662f Oplog\uff1f<\/h2>\n<p>Oplog \u662f MongoDB \u4e2d\u4e00\u500b\u7279\u6b8a\u7684\u6709\u4e0a\u9650\u96c6\u5408\uff0c\u7528\u65bc\u6309\u7279\u5b9a\u9806\u5e8f\u8a18\u9304\u6240\u6709\u5beb\u5165\u64cd\u4f5c\u3002\u5b83\u5145\u7576\u4e8b\u52d9\u65e5\u8a8c\uff0c\u6355\u6349\u5c0d\u6578\u64da\u5eab\u6240\u505a\u7684\u6bcf\u500b\u66f4\u6539\uff0c\u5305\u62ec\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u3002\u901a\u904e\u4ee5\u6642\u9593\u9806\u5e8f\u5b58\u5132\u9019\u4e9b\u64cd\u4f5c\uff0coplog \u4f7f\u8907\u88fd\u6210\u70ba\u53ef\u80fd\uff0c\u4e26\u78ba\u4fdd\u526f\u672c\u96c6\u4e2d\u7684\u6578\u64da\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"oplog-structure-kQsiaqXiMQ\">Oplog \u7d50\u69cb<\/h2>\n<p>Oplog \u662f\u4e00\u500b\u540d\u70ba\u300coplog.rs\u300d\u7684\u96c6\u5408\uff0c\u4f4d\u65bc\u6bcf\u500b MongoDB \u526f\u672c\u96c6\u6210\u54e1\u7684\u672c\u5730\u6578\u64da\u5eab\u4e2d\u3002\u5b83\u7531\u500b\u5225\u6587\u6a94\u7d44\u6210\uff0c\u6bcf\u500b\u6587\u6a94\u4ee3\u8868\u4e00\u500b\u55ae\u7368\u7684\u5beb\u5165\u64cd\u4f5c\u3002\u9019\u4e9b\u6587\u6a94\u5305\u542b\u4e00\u4e9b\u91cd\u8981\u4fe1\u606f\uff0c\u4f8b\u5982\u64cd\u4f5c\u985e\u578b\u3001\u547d\u540d\u7a7a\u9593\u3001\u6642\u9593\u6233\u4ee5\u53ca\u88ab\u4fee\u6539\u7684\u5be6\u969b\u6578\u64da\u3002<\/p>\n<p>\u6bcf\u500b oplog \u6587\u6a94\u5177\u6709\u4ee5\u4e0b\u5b57\u6bb5\uff1a<\/p>\n<ul>\n<li><code>ts<\/code>: \u8868\u793a\u64cd\u4f5c\u767c\u751f\u6642\u9593\u7684\u6642\u9593\u6233\u3002<\/li>\n<li><code>h<\/code>: \u64cd\u4f5c\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u3002<\/li>\n<li><code>v<\/code>: oplog \u683c\u5f0f\u7684\u7248\u672c\u3002<\/li>\n<li><code>op<\/code>: \u64cd\u4f5c\u985e\u578b\uff08\u4f8b\u5982\uff0c\u300ci\u300d\u4ee3\u8868\u63d2\u5165\uff0c\u300cu\u300d\u4ee3\u8868\u66f4\u65b0\uff0c\u300cd\u300d\u4ee3\u8868\u522a\u9664\uff09\u3002<\/li>\n<li><code>ns<\/code>: \u64cd\u4f5c\u7684\u547d\u540d\u7a7a\u9593\uff0c\u6307\u793a\u6b63\u5728\u4fee\u6539\u7684\u6578\u64da\u5eab\u548c\u96c6\u5408\u3002<\/li>\n<li><code>o<\/code>: \u88ab\u4fee\u6539\u7684\u5be6\u969b\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"oplog-and-replication-kQsiaqXiMQ\">Oplog \u8207\u8907\u88fd<\/h2>\n<p>Oplog \u5728 MongoDB \u7684\u8907\u88fd\u904e\u7a0b\u4e2d\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u7576\u4e3b\u7bc0\u9ede\u63a5\u6536\u5230\u5beb\u5165\u64cd\u4f5c\u6642\uff0c\u5b83\u9996\u5148\u5728\u672c\u5730\u61c9\u7528\u8a72\u64cd\u4f5c\uff0c\u7136\u5f8c\u5c07\u5176\u8a18\u9304\u5728\u81ea\u5df1\u7684 oplog \u4e2d\u3002\u4e3b\u7bc0\u9ede\u96a8\u5f8c\u5c07\u8a72\u64cd\u4f5c\u8907\u88fd\u5230\u526f\u672c\u96c6\u7684\u6b21\u7bc0\u9ede\u3002<\/p>\n<p>\u6b21\u7bc0\u9ede\u4e0d\u65b7\u5f9e\u4e3b\u7bc0\u9ede\u63d0\u53d6 oplog\uff0c\u4e26\u4ee5\u76f8\u540c\u7684\u9806\u5e8f\u61c9\u7528\u9019\u4e9b\u64cd\u4f5c\u3002\u901a\u904e\u5f9e oplog \u91cd\u64ad\u64cd\u4f5c\uff0c\u6b21\u7bc0\u9ede\u53ef\u4ee5\u8907\u88fd\u4e3b\u7bc0\u9ede\u6240\u505a\u7684\u66f4\u6539\uff0c\u78ba\u4fdd\u526f\u672c\u96c6\u4e2d\u7684\u6578\u64da\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"oplog-size-and-retention-kQsiaqXiMQ\">Oplog \u5927\u5c0f\u8207\u4fdd\u7559<\/h2>\n<p>\u7531\u65bc oplog \u662f\u4e00\u500b\u6709\u4e0a\u9650\u7684\u96c6\u5408\uff0c\u56e0\u6b64\u5b83\u5177\u6709\u56fa\u5b9a\u5927\u5c0f\u4e26\u4fdd\u7559\u6709\u9650\u6578\u91cf\u7684\u64cd\u4f5c\u3002oplog \u7684\u5927\u5c0f\u7531\u5728\u521d\u59cb\u5316\u526f\u672c\u96c6\u6642\u6307\u5b9a\u7684 <code>oplogSize<\/code> \u53c3\u6578\u6c7a\u5b9a\u3002\u4e00\u65e6 oplog \u9054\u5230\u5176\u6700\u5927\u5927\u5c0f\uff0c\u6700\u820a\u7684\u64cd\u4f5c\u5c07\u81ea\u52d5\u88ab\u522a\u9664\uff0c\u4ee5\u4fbf\u70ba\u65b0\u64cd\u4f5c\u9a30\u51fa\u7a7a\u9593\u3002<\/p>\n<p>\u6839\u64da\u5de5\u4f5c\u8ca0\u8f09\u548c\u8907\u88fd\u5ef6\u9072\u5bb9\u5fcd\u5ea6\u9069\u7576\u914d\u7f6e oplog \u5927\u5c0f\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c oplog \u5927\u5c0f\u904e\u5c0f\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4 oplog \u5305\u88dd\uff08oplog wrapping\uff09\uff0c\u5373\u65b0\u64cd\u4f5c\u5728\u6240\u6709\u6b21\u7bc0\u9ede\u8907\u88fd\u4e4b\u524d\u8986\u84cb\u820a\u64cd\u4f5c\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u904e\u5927\u7684 oplog \u53ef\u80fd\u6703\u6d88\u8017\u5927\u91cf\u78c1\u789f\u7a7a\u9593\u3002<\/p>\n<h2 id=\"conclusion-kQsiaqXiMQ\">\u7d50\u8ad6<\/h2>\n<p>Oplog \u662f MongoDB \u8907\u88fd\u6a5f\u5236\u4e2d\u7684\u4e00\u500b\u57fa\u672c\u7d44\u4ef6\uff0c\u78ba\u4fdd\u526f\u672c\u96c6\u4e2d\u7684\u6578\u64da\u4e00\u81f4\u6027\u3002\u901a\u904e\u6309\u6642\u9593\u9806\u5e8f\u8a18\u9304\u6240\u6709\u5beb\u5165\u64cd\u4f5c\uff0coplog \u4f7f\u6b21\u7bc0\u9ede\u80fd\u5920\u8907\u88fd\u4e3b\u7bc0\u9ede\u6240\u505a\u7684\u66f4\u6539\u3002\u4e86\u89e3 oplog \u7684\u7d50\u69cb\u53ca\u5176\u5728\u8907\u88fd\u4e2d\u7684\u4f5c\u7528\u5c0d\u65bc\u6709\u6548\u7ba1\u7406 MongoDB \u90e8\u7f72\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h3 id=\"summary-kQsiaqXiMQ\">\u7e3d\u7d50\uff1a<\/h3>\n<p>\u7e3d\u4e4b\uff0coplog \u662f MongoDB \u8907\u88fd\u904e\u7a0b\u4e2d\u7684\u4e00\u500b\u95dc\u9375\u90e8\u5206\u3002\u5b83\u662f\u4e00\u500b\u6709\u4e0a\u9650\u7684\u96c6\u5408\uff0c\u6309\u7279\u5b9a\u9806\u5e8f\u8a18\u9304\u6240\u6709\u5beb\u5165\u64cd\u4f5c\u3002Oplog \u4f7f\u526f\u672c\u96c6\u4e4b\u9593\u7684\u6578\u64da\u540c\u6b65\u6210\u70ba\u53ef\u80fd\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u4e86\u89e3 oplog \u7684\u7d50\u69cb\u53ca\u5176\u5728\u8907\u88fd\u4e2d\u7684\u4f5c\u7528\u5c0d\u65bc\u6709\u6548\u7ba1\u7406 MongoDB \u90e8\u7f72\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u6709\u95dc VPS \u8a17\u7ba1\u53ca\u5176\u5982\u4f55\u4f7f\u60a8\u7684 MongoDB \u90e8\u7f72\u53d7\u76ca\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u8a5e\u5f59\u8868 &#038;#82&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-21528","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21528","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=21528"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21528\/revisions"}],"predecessor-version":[{"id":23934,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21528\/revisions\/23934"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21528"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21528"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21528"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}