{"id":175761,"date":"2024-11-08T08:46:18","date_gmt":"2024-11-08T00:46:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175761\/"},"modified":"2024-11-08T08:46:19","modified_gmt":"2024-11-08T00:46:19","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mongodb%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-160-maxstaleness%e8%b6%85%e5%87%ba%e7%af%84%e5%9c%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175761\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MongoDB\u932f\u8aa4\u4ee3\u78bc &#8211; 160 &#8211; MaxStaleness\u8d85\u51fa\u7bc4\u570d"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mongodb%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-160-maxstaleness%e8%b6%85%e5%87%ba%e7%af%84%e5%9c%8d-CLVtwdIzfy\">\u5982\u4f55\u4fee\u5fa9MongoDB\u932f\u8aa4\u4ee3\u78bc &#8211; 160 &#8211; MaxStaleness\u8d85\u51fa\u7bc4\u570d<\/h1>\n<p>\u5728\u4f7f\u7528MongoDB\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa4\u4ee3\u78bc160\uff0c\u8a72\u932f\u8aa4\u901a\u5e38\u8207MaxStaleness\u8a2d\u7f6e\u6709\u95dc\u3002MaxStaleness\u662f\u4e00\u500b\u7528\u65bc\u63a7\u5236\u8b80\u53d6\u64cd\u4f5c\u7684\u53c3\u6578\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528\u526f\u672c\u96c6\u6642\u3002\u7576MaxStaleness\u8d85\u51fa\u7bc4\u570d\u6642\uff0cMongoDB\u5c07\u7121\u6cd5\u6eff\u8db3\u8b80\u53d6\u8acb\u6c42\uff0c\u5f9e\u800c\u5c0e\u81f4\u932f\u8aa4\u4ee3\u78bc160\u7684\u51fa\u73fe\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afmaxstaleness%ef%bc%9f-CLVtwdIzfy\">\u4ec0\u9ebc\u662fMaxStaleness\uff1f<\/h2>\n<p>MaxStaleness\u662f\u4e00\u500bMongoDB\u7684\u8b80\u53d6\u9078\u9805\uff0c\u5141\u8a31\u958b\u767c\u8005\u6307\u5b9a\u5728\u8b80\u53d6\u64cd\u4f5c\u4e2d\u53ef\u4ee5\u63a5\u53d7\u7684\u6700\u5927\u5ef6\u9072\u6642\u9593\u3002\u9019\u610f\u5473\u8457\u5728\u526f\u672c\u96c6\u74b0\u5883\u4e2d\uff0c\u5ba2\u6236\u7aef\u53ef\u4ee5\u9078\u64c7\u5f9e\u67d0\u500b\u7279\u5b9a\u7684\u526f\u672c\u7bc0\u9ede\u8b80\u53d6\u6578\u64da\uff0c\u800c\u4e0d\u5fc5\u7e3d\u662f\u5f9e\u4e3b\u7bc0\u9ede\u8b80\u53d6\u3002\u9019\u6a23\u7684\u8a2d\u7f6e\u53ef\u4ee5\u63d0\u9ad8\u8b80\u53d6\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9ad8\u8ca0\u8f09\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc160%e7%9a%84%e5%8e%9f%e5%9b%a0-CLVtwdIzfy\">\u932f\u8aa4\u4ee3\u78bc160\u7684\u539f\u56e0<\/h2>\n<p>\u7576MaxStaleness\u8a2d\u7f6e\u7684\u503c\u904e\u4f4e\uff0c\u6216\u8005\u7576\u526f\u672c\u96c6\u4e2d\u7684\u67d0\u500b\u7bc0\u9ede\u7684\u6578\u64da\u5ef6\u9072\u8d85\u904e\u4e86\u9019\u500b\u8a2d\u7f6e\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa4\u4ee3\u78bc160\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u7db2\u7d61\u5ef6\u9072\uff1a<\/strong>\u5982\u679c\u5ba2\u6236\u7aef\u8207\u526f\u672c\u96c6\u7684\u67d0\u500b\u7bc0\u9ede\u4e4b\u9593\u5b58\u5728\u7db2\u7d61\u5ef6\u9072\uff0c\u5247\u8a72\u7bc0\u9ede\u53ef\u80fd\u7121\u6cd5\u53ca\u6642\u66f4\u65b0\u6578\u64da\u3002<\/li>\n<li><strong>\u526f\u672c\u96c6\u4e0d\u7a69\u5b9a\uff1a<\/strong>\u5982\u679c\u526f\u672c\u96c6\u4e2d\u7684\u67d0\u500b\u7bc0\u9ede\u56e0\u6545\u969c\u6216\u5176\u4ed6\u539f\u56e0\u7121\u6cd5\u6b63\u5e38\u5de5\u4f5c\uff0c\u5247\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u5ef6\u9072\u3002<\/li>\n<li><strong>\u4e0d\u7576\u7684MaxStaleness\u8a2d\u7f6e\uff1a<\/strong>\u5982\u679cMaxStaleness\u7684\u503c\u8a2d\u7f6e\u5f97\u904e\u4f4e\uff0c\u5247\u5728\u6b63\u5e38\u60c5\u6cc1\u4e0b\u4e5f\u53ef\u80fd\u51fa\u73fe\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc160-CLVtwdIzfy\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc160<\/h2>\n<p>\u4fee\u5fa9MongoDB\u932f\u8aa4\u4ee3\u78bc160\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<h3 id=\"1-%e8%aa%bf%e6%95%b4maxstaleness%e8%a8%ad%e7%bd%ae-CLVtwdIzfy\">1. \u8abf\u6574MaxStaleness\u8a2d\u7f6e<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u7576\u524d\u7684MaxStaleness\u8a2d\u7f6e\u3002\u5982\u679c\u8a2d\u7f6e\u7684\u503c\u904e\u4f4e\uff0c\u53ef\u4ee5\u8003\u616e\u5c07\u5176\u8abf\u9ad8\u3002\u4f8b\u5982\uff0c\u5982\u679c\u7576\u524d\u8a2d\u7f6e\u70ba5\u79d2\uff0c\u53ef\u4ee5\u5c07\u5176\u8abf\u6574\u70ba10\u79d2\u6216\u66f4\u9ad8\u3002\u9019\u6a23\u53ef\u4ee5\u5141\u8a31\u66f4\u591a\u7684\u5ef6\u9072\uff0c\u5f9e\u800c\u6e1b\u5c11\u932f\u8aa4\u7684\u767c\u751f\u3002<\/p>\n<pre><code>db.collection.find().readPref(\"secondary\", { maxStalenessSeconds: 10 })<\/code><\/pre>\n<h3 id=\"2-%e6%aa%a2%e6%9f%a5%e5%89%af%e6%9c%ac%e9%9b%86%e7%8b%80%e6%85%8b-CLVtwdIzfy\">2. \u6aa2\u67e5\u526f\u672c\u96c6\u72c0\u614b<\/h3>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6aa2\u67e5\u526f\u672c\u96c6\u7684\u72c0\u614b\uff0c\u78ba\u4fdd\u6240\u6709\u7bc0\u9ede\u90fd\u5728\u6b63\u5e38\u904b\u884c\uff1a<\/p>\n<pre><code>rs.status()<\/code><\/pre>\n<p>\u5982\u679c\u767c\u73fe\u67d0\u500b\u7bc0\u9ede\u8655\u65bc\u4e0d\u5065\u5eb7\u72c0\u614b\uff0c\u5247\u9700\u8981\u9032\u884c\u6545\u969c\u6392\u9664\uff0c\u78ba\u4fdd\u6240\u6709\u7bc0\u9ede\u90fd\u80fd\u6b63\u5e38\u540c\u6b65\u6578\u64da\u3002<\/p>\n<h3 id=\"3-%e5%84%aa%e5%8c%96%e7%b6%b2%e7%b5%a1%e9%80%a3%e6%8e%a5-CLVtwdIzfy\">3. \u512a\u5316\u7db2\u7d61\u9023\u63a5<\/h3>\n<p>\u5982\u679c\u7db2\u7d61\u5ef6\u9072\u662f\u9020\u6210\u554f\u984c\u7684\u539f\u56e0\uff0c\u53ef\u4ee5\u8003\u616e\u512a\u5316\u7db2\u7d61\u9023\u63a5\uff0c\u78ba\u4fdd\u5ba2\u6236\u7aef\u8207MongoDB\u526f\u672c\u96c6\u4e4b\u9593\u7684\u9023\u63a5\u7a69\u5b9a\u4e14\u5feb\u901f\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e4%b8%bb%e7%af%80%e9%bb%9e%e9%80%b2%e8%a1%8c%e8%ae%80%e5%8f%96-CLVtwdIzfy\">4. \u4f7f\u7528\u4e3b\u7bc0\u9ede\u9032\u884c\u8b80\u53d6<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u5982\u679c\u4e0d\u9700\u8981\u9ad8\u53ef\u7528\u6027\uff0c\u53ef\u4ee5\u8003\u616e\u76f4\u63a5\u5f9e\u4e3b\u7bc0\u9ede\u9032\u884c\u8b80\u53d6\uff0c\u4ee5\u907f\u514d\u56e0\u526f\u672c\u5ef6\u9072\u800c\u5c0e\u81f4\u7684\u932f\u8aa4\u3002<\/p>\n<pre><code>db.collection.find().readPref(\"primary\")<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CLVtwdIzfy\">\u7e3d\u7d50<\/h2>\n<p>MongoDB\u932f\u8aa4\u4ee3\u78bc160\u901a\u5e38\u662f\u7531\u65bcMaxStaleness\u8a2d\u7f6e\u4e0d\u7576\u6216\u526f\u672c\u96c6\u4e2d\u7684\u5ef6\u9072\u554f\u984c\u5f15\u8d77\u7684\u3002\u901a\u904e\u8abf\u6574MaxStaleness\u8a2d\u7f6e\u3001\u6aa2\u67e5\u526f\u672c\u96c6\u72c0\u614b\u3001\u512a\u5316\u7db2\u7d61\u9023\u63a5\u4ee5\u53ca\u9078\u64c7\u5408\u9069\u7684\u8b80\u53d6\u7bc0\u9ede\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u7a69\u5b9a\u6027\u7684\u61c9\u7528\uff0c\u5efa\u8b70\u5b9a\u671f\u6aa2\u67e5\u548c\u512a\u5316MongoDB\u7684\u914d\u7f6e\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u6b63\u5e38\u904b\u884c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9MongoDB\u932f\u8aa4\u4ee3\u78bc160 &#8211; MaxStaleness\u8d85\u51fa\u7bc4\u570d\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u6709\u6548\u89e3\u6c7a\u65b9\u6848\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-175761","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175761","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=175761"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175761\/revisions"}],"predecessor-version":[{"id":175762,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175761\/revisions\/175762"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}