{"id":81396,"date":"2024-10-16T15:27:18","date_gmt":"2024-10-16T07:27:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/81396\/"},"modified":"2024-10-16T15:27:18","modified_gmt":"2024-10-16T07:27:18","slug":"nosql%e5%85%a7%e6%88%b0%ef%bc%9amongodb%e8%88%87couchdb%e6%9f%a5%e8%a9%a2%e6%96%b9%e5%bc%8f%e5%b0%8d%e6%af%94","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/81396\/","title":{"rendered":"NoSQL\u5167\u6230\uff1aMongoDB\u8207CouchDB\u67e5\u8a62\u65b9\u5f0f\u5c0d\u6bd4"},"content":{"rendered":"

NoSQL\u5167\u6230\uff1aMongoDB\u8207CouchDB\u67e5\u8a62\u65b9\u5f0f\u5c0d\u6bd4<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u7ba1\u7406\u9818\u57df\uff0cNoSQL\u6578\u64da\u5eab\u56e0\u5176\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u95dc\u6ce8\u3002MongoDB\u548cCouchDB\u662f\u5169\u7a2e\u6d41\u884c\u7684NoSQL\u6578\u64da\u5eab\uff0c\u5b83\u5011\u5404\u81ea\u64c1\u6709\u7368\u7279\u7684\u67e5\u8a62\u65b9\u5f0f\u548c\u7279\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u5169\u8005\u4e4b\u9593\u7684\u5dee\u7570\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u9078\u64c7\u6700\u9069\u5408\u5176\u9700\u6c42\u7684\u6578\u64da\u5eab\u3002<\/p>\n

MongoDB\u6982\u8ff0<\/h2>\n

MongoDB\u662f\u4e00\u7a2e\u6587\u6a94\u5c0e\u5411\u7684NoSQL\u6578\u64da\u5eab\uff0c\u4f7f\u7528BSON\uff08\u985e\u4f3cJSON\u7684\u4e8c\u9032\u5236\u683c\u5f0f\uff09\u4f86\u5b58\u5132\u6578\u64da\u3002\u5b83\u7684\u67e5\u8a62\u8a9e\u8a00\u985e\u4f3c\u65bcSQL\uff0c\u4f46\u66f4\u5177\u9748\u6d3b\u6027\uff0c\u5141\u8a31\u958b\u767c\u8005\u4ee5\u66f4\u81ea\u7136\u7684\u65b9\u5f0f\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n

MongoDB\u7684\u67e5\u8a62\u65b9\u5f0f<\/h3>\n

MongoDB\u7684\u67e5\u8a62\u8a9e\u8a00\u63d0\u4f9b\u4e86\u591a\u7a2e\u64cd\u4f5c\u7b26\u548c\u65b9\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u9019\u4e9b\u5de5\u5177\u4f86\u9032\u884c\u8907\u96dc\u7684\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n

\n\/\/ \u67e5\u8a62\u6240\u6709\u5e74\u9f61\u5927\u65bc25\u7684\u7528\u6236\ndb.users.find({ age: { $gt: 25 } })\n\n\/\/ \u67e5\u8a62\u540d\u5b57\u70ba\"John\"\u7684\u7528\u6236\ndb.users.find({ name: \"John\" })\n\n\/\/ \u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u67e5\u8a62\ndb.users.find({ email: { $regex: \/@example.com$\/ } })\n<\/code><\/pre>\n
MongoDB\u7684\u67e5\u8a62\u8a9e\u8a00\u652f\u6301\u805a\u5408\u64cd\u4f5c\uff0c\u9019\u4f7f\u5f97\u6578\u64da\u5206\u6790\u8b8a\u5f97\u66f4\u52a0\u7c21\u55ae\u3002\u4f8b\u5982\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u805a\u5408\u7ba1\u9053\u4f86\u9032\u884c\u6578\u64da\u7684\u5206\u7d44\u548c\u8a08\u7b97\uff1a<\/p>\n
\ndb.orders.aggregate([\n    { $group: { _id: \"$customerId\", total: { $sum: \"$amount\" } } }\n])\n<\/code><\/pre>\n
CouchDB\u6982\u8ff0<\/h2>\n
CouchDB\u662f\u4e00\u7a2e\u57fa\u65bc\u6587\u6a94\u7684NoSQL\u6578\u64da\u5eab\uff0c\u5f37\u8abf\u53ef\u64f4\u5c55\u6027\u548c\u9ad8\u53ef\u7528\u6027\u3002\u5b83\u4f7f\u7528HTTP\u5354\u8b70\u9032\u884c\u6578\u64da\u64cd\u4f5c\uff0c\u4e26\u4e14\u652f\u6301MapReduce\u67e5\u8a62\u3002<\/p>\n
CouchDB\u7684\u67e5\u8a62\u65b9\u5f0f<\/h3>\n
CouchDB\u7684\u67e5\u8a62\u65b9\u5f0f\u8207MongoDB\u6709\u6240\u4e0d\u540c\uff0c\u4e3b\u8981\u4f9d\u8cf4\u65bc\u8996\u5716\uff08views\uff09\u548cMapReduce\u3002\u958b\u767c\u8005\u9700\u8981\u5148\u5b9a\u7fa9\u8996\u5716\uff0c\u7136\u5f8c\u901a\u904e\u9019\u4e9b\u8996\u5716\u4f86\u67e5\u8a62\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u5b9a\u7fa9\u8996\u5716\u7684\u793a\u4f8b\uff1a<\/p>\n
\n\/\/ \u5b9a\u7fa9\u4e00\u500b\u8996\u5716\uff0c\u6309\u5e74\u9f61\u5206\u7d44\n{\n  \"_id\": \"_design\/users\",\n  \"views\": {\n    \"by_age\": {\n      \"map\": \"function(doc) { if(doc.age) emit(doc.age, doc); }\"\n    }\n  }\n}\n<\/code><\/pre>\n
\u67e5\u8a62\u8996\u5716\u7684\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n
\n\/\/ \u67e5\u8a62\u5e74\u9f61\u70ba30\u7684\u7528\u6236\nGET \/users\/_design\/users\/_view\/by_age?key=30\n<\/code><\/pre>\n
\u67e5\u8a62\u6027\u80fd\u6bd4\u8f03<\/h2>\n
\u5728\u67e5\u8a62\u6027\u80fd\u65b9\u9762\uff0cMongoDB\u901a\u5e38\u5728\u8655\u7406\u8907\u96dc\u67e5\u8a62\u6642\u8868\u73fe\u66f4\u4f73\uff0c\u56e0\u70ba\u5b83\u7684\u67e5\u8a62\u8a9e\u8a00\u66f4\u70ba\u9748\u6d3b\u4e14\u76f4\u89c0\u3002\u800cCouchDB\u5247\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u56e0\u5176\u57fa\u65bc\u8996\u5716\u7684\u67e5\u8a62\u65b9\u5f0f\uff0c\u80fd\u5920\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u6279\u91cf\u67e5\u8a62\u6642\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u7e3d\u7d50\u4f86\u8aaa\uff0cMongoDB\u548cCouchDB\u5404\u6709\u5176\u512a\u52e2\u548c\u9069\u7528\u5834\u666f\u3002MongoDB\u9069\u5408\u9700\u8981\u9748\u6d3b\u67e5\u8a62\u548c\u5feb\u901f\u958b\u767c\u7684\u61c9\u7528\uff0c\u800cCouchDB\u5247\u66f4\u9069\u5408\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u53ef\u64f4\u5c55\u6027\u7684\u5834\u666f\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u696d\u52d9\u9700\u6c42\u548c\u6280\u8853\u67b6\u69cb\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u7121\u8ad6\u662f\u4f7f\u7528MongoDB\u9084\u662fCouchDB\uff0c\u9078\u64c7\u5408\u9069\u7684VPS<\/a>\u6216\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u90fd\u80fd\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22NoSQL\u5167\u6230\u4e2dMongoDB\u8207CouchDB\u7684\u67e5\u8a62\u65b9\u5f0f\u5c0d\u6bd4\uff0c\u4e86\u89e3\u5404\u81ea\u7684\u512a\u7f3a\u9ede\u53ca\u9069\u7528\u5834\u666f\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-81396","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/81396","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=81396"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/81396\/revisions"}],"predecessor-version":[{"id":81397,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/81396\/revisions\/81397"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=81396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=81396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=81396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}