{"id":63896,"date":"2024-10-14T03:23:16","date_gmt":"2024-10-13T19:23:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/63896\/"},"modified":"2024-10-14T03:23:16","modified_gmt":"2024-10-13T19:23:16","slug":"mongodb%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2%ef%bc%9a%e6%9c%89%e6%95%88%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e6%90%9c%e7%b4%a2%e5%88%86%e9%a0%81%ef%bc%88mongodb%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/63896\/","title":{"rendered":"MongoDB\u5206\u9801\u67e5\u8a62\uff1a\u6709\u6548\u5be6\u73fe\u6578\u64da\u641c\u7d22\u5206\u9801\uff08mongodb\u5206\u9801\u67e5\u8a62\uff09"},"content":{"rendered":"

MongoDB\u5206\u9801\u67e5\u8a62\uff1a\u6709\u6548\u5be6\u73fe\u6578\u64da\u641c\u7d22\u5206\u9801<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u7684\u6709\u6548\u7ba1\u7406\u548c\u6aa2\u7d22\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002MongoDB\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684NoSQL\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u6578\u64da\u5b58\u5132\u548c\u67e5\u8a62\u529f\u80fd\uff0c\u5176\u4e2d\u5206\u9801\u67e5\u8a62\u662f\u4e00\u500b\u95dc\u9375\u7684\u7279\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMongoDB\u7684\u5206\u9801\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u6709\u6548\u5be6\u73fe\u6578\u64da\u641c\u7d22\u5206\u9801\u7684\u6280\u5de7\u548c\u793a\u4f8b\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u5206\u9801\u67e5\u8a62\uff1f<\/h2>\n

\u5206\u9801\u67e5\u8a62\u662f\u6307\u5c07\u67e5\u8a62\u7d50\u679c\u5206\u6210\u591a\u500b\u9801\u9762\uff0c\u4ee5\u4fbf\u7528\u6236\u53ef\u4ee5\u9010\u6b65\u67e5\u770b\u6578\u64da\u3002\u9019\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u7279\u5225\u6709\u7528\uff0c\u56e0\u70ba\u4e00\u6b21\u6027\u52a0\u8f09\u6240\u6709\u6578\u64da\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\u548c\u7528\u6236\u9ad4\u9a57\u4e0d\u4f73\u3002MongoDB\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u5206\u9801\u67e5\u8a62\uff0c\u6700\u5e38\u898b\u7684\u6709\u4f7f\u7528skip<\/strong>\u548climit<\/strong>\u64cd\u4f5c\u7b26\u3002<\/p>\n

\u4f7f\u7528skip\u548climit\u9032\u884c\u5206\u9801\u67e5\u8a62<\/h2>\n

\u5728MongoDB\u4e2d\uff0cskip<\/code>\u548climit<\/code>\u662f\u5169\u500b\u975e\u5e38\u6709\u7528\u7684\u64cd\u4f5c\u7b26\u3002limit<\/code>\u7528\u65bc\u9650\u5236\u67e5\u8a62\u7d50\u679c\u7684\u6578\u91cf\uff0c\u800cskip<\/code>\u5247\u7528\u65bc\u8df3\u904e\u6307\u5b9a\u6578\u91cf\u7684\u6587\u6a94\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684\u793a\u4f8b\uff1a<\/p>\n

db.collection.find().skip(10).limit(5)<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u67e5\u8a62\u5c07\u8df3\u904e\u524d10\u500b\u6587\u6a94\uff0c\u7136\u5f8c\u8fd4\u56de\u63a5\u4e0b\u4f86\u76845\u500b\u6587\u6a94\u3002\u9019\u6a23\u53ef\u4ee5\u5be6\u73fe\u5206\u9801\u6548\u679c\uff0c\u5047\u8a2d\u6bcf\u9801\u986f\u793a5\u500b\u7d50\u679c\uff0c\u5247\u7b2c2\u9801\u7684\u67e5\u8a62\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
db.collection.find().skip(5).limit(5)<\/code><\/pre>\n
\u6027\u80fd\u8003\u91cf<\/h2>\n
\u96d6\u7136\u4f7f\u7528skip<\/code>\u548climit<\/code>\u65b9\u6cd5\u7c21\u55ae\u6613\u7528\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u7576skip<\/code>\u7684\u503c\u589e\u5927\u6642\uff0cMongoDB\u9700\u8981\u904d\u6b77\u66f4\u591a\u7684\u6587\u6a94\uff0c\u9019\u6703\u5c0e\u81f4\u67e5\u8a62\u901f\u5ea6\u8b8a\u6162\u3002\u56e0\u6b64\uff0c\u5c0d\u65bc\u5927\u6578\u64da\u96c6\uff0c\u5efa\u8b70\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\u4f86\u512a\u5316\u5206\u9801\u67e5\u8a62\u3002<\/p>\n
\u57fa\u65bc\u6e38\u6a19\u7684\u5206\u9801\u67e5\u8a62<\/h2>\n
\u4e00\u7a2e\u66f4\u9ad8\u6548\u7684\u5206\u9801\u67e5\u8a62\u65b9\u6cd5\u662f\u57fa\u65bc\u6e38\u6a19\u7684\u5206\u9801\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u4f7f\u7528skip<\/code>\uff0c\u800c\u662f\u4f7f\u7528\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff08\u5982\u6587\u6a94\u7684ID\u6216\u67d0\u500b\u5b57\u6bb5\u7684\u503c\uff09\u4f86\u8ddf\u8e2a\u7576\u524d\u9801\u9762\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u6309\u6642\u9593\u6233\u6392\u5e8f\u7684\u6587\u6a94\u96c6\u5408\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u7372\u53d6\u4e0b\u4e00\u9801\u7684\u6578\u64da\uff1a<\/p>\n
db.collection.find({timestamp: {$gt: lastTimestamp}}).limit(5)<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0clastTimestamp<\/code>\u662f\u4e0a\u4e00\u9801\u6700\u5f8c\u4e00\u500b\u6587\u6a94\u7684\u6642\u9593\u6233\u3002\u9019\u6a23\u7684\u67e5\u8a62\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6027\u80fd\uff0c\u9084\u80fd\u907f\u514d\u56e0\u70ba\u6578\u64da\u8b8a\u66f4\u800c\u5c0e\u81f4\u7684\u5206\u9801\u932f\u8aa4\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
MongoDB\u7684\u5206\u9801\u67e5\u8a62\u529f\u80fd\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u6578\u64da\u6aa2\u7d22\u65b9\u5f0f\u3002\u96d6\u7136\u4f7f\u7528skip<\/code>\u548climit<\/code>\u65b9\u6cd5\u7c21\u55ae\u6613\u7528\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u57fa\u65bc\u6e38\u6a19\u7684\u5206\u9801\u67e5\u8a62\u66f4\u5177\u6027\u80fd\u512a\u52e2\u3002\u9078\u64c7\u5408\u9069\u7684\u5206\u9801\u7b56\u7565\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u548c\u7cfb\u7d71\u6027\u80fd\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u904b\u884c\u60a8\u7684MongoDB\u6578\u64da\u5eab\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u4f3a\u670d\u5668<\/a>\u90fd\u80fd\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22MongoDB\u5206\u9801\u67e5\u8a62\u7684\u6709\u6548\u65b9\u6cd5\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u641c\u7d22\u8207\u5206\u9801\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\u8207\u7528\u6236\u9ad4\u9a57\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-63896","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63896","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=63896"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63896\/revisions"}],"predecessor-version":[{"id":63897,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63896\/revisions\/63897"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=63896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=63896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=63896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}