{"id":64022,"date":"2024-10-14T10:57:18","date_gmt":"2024-10-14T02:57:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/64022\/"},"modified":"2024-10-14T10:57:18","modified_gmt":"2024-10-14T02:57:18","slug":"mongodb%e8%88%87couchdb%e5%85%a8%e6%96%b9%e4%bd%8d%e5%b0%8d%e6%af%94","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/64022\/","title":{"rendered":"MongoDB\u8207CouchDB\u5168\u65b9\u4f4d\u5c0d\u6bd4"},"content":{"rendered":"

MongoDB\u8207CouchDB\u5168\u65b9\u4f4d\u5c0d\u6bd4<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5c0d\u65bc\u958b\u767c\u8005\u548c\u4f01\u696d\u81f3\u95dc\u91cd\u8981\u3002MongoDB\u548cCouchDB\u662f\u5169\u7a2e\u6d41\u884c\u7684NoSQL\u6578\u64da\u5eab\uff0c\u5404\u81ea\u64c1\u6709\u7368\u7279\u7684\u7279\u6027\u548c\u512a\u52e2\u3002\u672c\u6587\u5c07\u5f9e\u591a\u500b\u65b9\u9762\u5c0d\u9019\u5169\u8005\u9032\u884c\u5168\u9762\u6bd4\u8f03\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5b83\u5011\u7684\u5dee\u7570\u548c\u9069\u7528\u5834\u666f\u3002<\/p>\n

\u57fa\u672c\u6982\u5ff5<\/h2>\n

MongoDB\u662f\u4e00\u500b\u57fa\u65bc\u6587\u6a94\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\u8a2d\u8a08\u76ee\u7684\u662f\u70ba\u4e86\u8655\u7406\u5927\u91cf\u7684\u6578\u64da\u4e26\u63d0\u4f9b\u9ad8\u6548\u7684\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n

CouchDB\u540c\u6a23\u662f\u4e00\u500b\u6587\u6a94\u5c0e\u5411\u7684NoSQL\u6578\u64da\u5eab\uff0c\u4f46\u5b83\u7684\u7279\u9ede\u5728\u65bc\u5176\u5f37\u5927\u7684\u540c\u6b65\u529f\u80fd\u548cRESTful API\u3002CouchDB\u4f7f\u7528JSON\u683c\u5f0f\u4f86\u5b58\u5132\u6578\u64da\uff0c\u4e26\u4e14\u652f\u6301\u591a\u7248\u672c\u4e26\u767c\u63a7\u5236\uff08MVCC\uff09\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u8655\u7406\u885d\u7a81\u6642\u8868\u73fe\u51fa\u8272\u3002<\/p>\n

\u6578\u64da\u6a21\u578b<\/h2>\n

MongoDB\u7684\u6578\u64da\u6a21\u578b<\/h3>\n

\u5728MongoDB\u4e2d\uff0c\u6578\u64da\u4ee5\u6587\u6a94\u7684\u5f62\u5f0f\u5b58\u5132\uff0c\u6bcf\u500b\u6587\u6a94\u90fd\u662f\u4e00\u500b\u7368\u7acb\u7684\u6578\u64da\u55ae\u5143\u3002\u9019\u4e9b\u6587\u6a94\u53ef\u4ee5\u5305\u542b\u5d4c\u5957\u7684\u6578\u64da\u7d50\u69cb\uff0c\u4e26\u4e14\u652f\u6301\u9748\u6d3b\u7684\u6578\u64da\u6a21\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u500bMongoDB\u6587\u6a94\u7684\u7bc4\u4f8b\uff1a<\/p>\n

{\n    \"_id\": \"1\",\n    \"name\": \"Alice\",\n    \"age\": 30,\n    \"address\": {\n        \"city\": \"Hong Kong\",\n        \"country\": \"China\"\n    }\n}<\/code><\/pre>\n
CouchDB\u7684\u6578\u64da\u6a21\u578b<\/h3>\n
CouchDB\u540c\u6a23\u4f7f\u7528\u6587\u6a94\u4f86\u5b58\u5132\u6578\u64da\uff0c\u4f46\u5b83\u7684\u8a2d\u8a08\u66f4\u6ce8\u91cd\u65bc\u6578\u64da\u7684\u540c\u6b65\u548c\u5206\u4f48\u3002CouchDB\u7684\u6587\u6a94\u4e5f\u53ef\u4ee5\u5305\u542b\u5d4c\u5957\u7d50\u69cb\uff0c\u4e26\u4e14\u652f\u6301\u7248\u672c\u63a7\u5236\u3002\u4ee5\u4e0b\u662f\u4e00\u500bCouchDB\u6587\u6a94\u7684\u7bc4\u4f8b\uff1a<\/p>\n
{\n    \"_id\": \"1\",\n    \"name\": \"Alice\",\n    \"age\": 30,\n    \"address\": {\n        \"city\": \"Hong Kong\",\n        \"country\": \"China\"\n    }\n}<\/code><\/pre>\n
\u67e5\u8a62\u8a9e\u8a00<\/h2>\n
MongoDB\u7684\u67e5\u8a62\u8a9e\u8a00<\/h3>\n
MongoDB\u4f7f\u7528\u4e00\u7a2e\u57fa\u65bcJSON\u7684\u67e5\u8a62\u8a9e\u8a00\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u7c21\u55ae\u7684\u67e5\u8a62\u8a9e\u53e5\u4f86\u6aa2\u7d22\u6578\u64da\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5e74\u9f61\u5927\u65bc25\u7684\u7528\u6236\uff1a<\/p>\n
db.users.find({ age: { $gt: 25 } })<\/code><\/pre>\n
CouchDB\u7684\u67e5\u8a62\u8a9e\u8a00<\/h3>\n
CouchDB\u5247\u4f7f\u7528MapReduce\u4f86\u9032\u884c\u67e5\u8a62\uff0c\u9019\u610f\u5473\u8457\u958b\u767c\u8005\u9700\u8981\u5b9a\u7fa9\u6620\u5c04\u51fd\u6578\u4f86\u751f\u6210\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6620\u5c04\u51fd\u6578\u7bc4\u4f8b\uff1a<\/p>\n
function (doc) {\n    if (doc.age > 25) {\n        emit(doc._id, doc);\n    }\n}<\/code><\/pre>\n
\u6027\u80fd\u8207\u64f4\u5c55\u6027<\/h2>\n
\u5728\u6027\u80fd\u65b9\u9762\uff0cMongoDB\u901a\u5e38\u5728\u8b80\u53d6\u548c\u5beb\u5165\u64cd\u4f5c\u4e0a\u8868\u73fe\u66f4\u4f73\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u5b83\u7684\u5167\u5b58\u6620\u5c04\u5b58\u5132\u5f15\u64ce\u4f7f\u5f97\u6578\u64da\u7684\u8b80\u53d6\u901f\u5ea6\u975e\u5e38\u5feb\u3002<\/p>\n
CouchDB\u5247\u5728\u6578\u64da\u540c\u6b65\u548c\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u8868\u73fe\u7a81\u51fa\uff0c\u7279\u5225\u9069\u5408\u9700\u8981\u591a\u5730\u9ede\u6578\u64da\u540c\u6b65\u7684\u61c9\u7528\u5834\u666f\u3002\u5176MVCC\u7279\u6027\u4f7f\u5f97\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e0b\u80fd\u5920\u6709\u6548\u8655\u7406\u6578\u64da\u885d\u7a81\u3002<\/p>\n
\u793e\u5340\u8207\u652f\u6301<\/h2>\n
MongoDB\u64c1\u6709\u4e00\u500b\u6d3b\u8e8d\u7684\u958b\u767c\u8005\u793e\u5340\uff0c\u63d0\u4f9b\u4e86\u5927\u91cf\u7684\u6587\u6a94\u548c\u8cc7\u6e90\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u5feb\u901f\u4e0a\u624b\u3002CouchDB\u540c\u6a23\u64c1\u6709\u4e00\u500b\u652f\u6301\u793e\u5340\uff0c\u4f46\u76f8\u5c0d\u65bcMongoDB\uff0c\u5176\u8cc7\u6e90\u548c\u6587\u6a94\u76f8\u5c0d\u8f03\u5c11\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u7e3d\u9ad4\u800c\u8a00\uff0cMongoDB\u548cCouchDB\u5404\u6709\u5176\u512a\u52e2\u548c\u9069\u7528\u5834\u666f\u3002MongoDB\u66f4\u9069\u5408\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9748\u6d3b\u6578\u64da\u6a21\u578b\u7684\u61c9\u7528\uff0c\u800cCouchDB\u5247\u5728\u6578\u64da\u540c\u6b65\u548c\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u8868\u73fe\u66f4\u4f73\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u61c9\u6839\u64da\u5177\u9ad4\u7684\u696d\u52d9\u9700\u6c42\u548c\u6280\u8853\u8981\u6c42\u4f86\u6c7a\u5b9a\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u4e26\u5e0c\u671b\u5728\u9999\u6e2f\u7372\u5f97\u7a69\u5b9a\u7684\u670d\u52d9\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u9999\u6e2fVPS<\/a>\u548c\u96f2\u4f3a\u670d\u5668<\/a>\u9078\u9805\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u5f37\u5927\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6df1\u5165\u6bd4\u8f03MongoDB\u8207CouchDB\uff0c\u63a2\u8a0e\u5176\u67b6\u69cb\u3001\u6027\u80fd\u3001\u6578\u64da\u6a21\u578b\u53ca\u4f7f\u7528\u5834\u666f\uff0c\u5e6b\u52a9\u60a8\u9078\u64c7\u6700\u9069\u5408\u7684NoSQL\u6578\u64da\u5eab\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-64022","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64022","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=64022"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64022\/revisions"}],"predecessor-version":[{"id":64023,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64022\/revisions\/64023"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=64022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=64022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=64022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}