{"id":98172,"date":"2024-10-21T00:23:19","date_gmt":"2024-10-20T16:23:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/98172\/"},"modified":"2024-10-21T00:23:19","modified_gmt":"2024-10-20T16:23:19","slug":"redis-%e6%9f%a5%e8%a9%a2%e6%89%80%e6%9c%89-db-%e4%b8%80%e6%ac%a1%e6%80%a7%e7%8d%b2%e5%8f%96%e6%9b%b4%e5%a4%9a%e4%bf%a1%e6%81%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/98172\/","title":{"rendered":"Redis \u67e5\u8a62\u6240\u6709 DB \u4e00\u6b21\u6027\u7372\u53d6\u66f4\u591a\u4fe1\u606f"},"content":{"rendered":"

Redis \u67e5\u8a62\u6240\u6709 DB \u4e00\u6b21\u6027\u7372\u53d6\u66f4\u591a\u4fe1\u606f<\/h1>\n

Redis \u662f\u4e00\u500b\u9ad8\u6548\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u5834\u666f\u3002\u4f5c\u70ba\u4e00\u500b\u958b\u6e90\u7684 NoSQL \u6578\u64da\u5eab\uff0cRedis \u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u7d50\u69cb\u548c\u64cd\u4f5c\uff0c\u8b93\u958b\u767c\u8005\u80fd\u5920\u9748\u6d3b\u5730\u8655\u7406\u6578\u64da\u3002\u5728\u4f7f\u7528 Redis \u7684\u904e\u7a0b\u4e2d\uff0c\u67e5\u8a62\u6240\u6709\u6578\u64da\u5eab\u7684\u5167\u5bb9\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u9032\u884c\u6578\u64da\u5206\u6790\u6216\u6545\u969c\u6392\u67e5\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4e00\u6b21\u6027\u7372\u53d6 Redis \u4e2d\u6240\u6709\u6578\u64da\u5eab\u7684\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n

Redis \u6578\u64da\u5eab\u6982\u8ff0<\/h2>\n

Redis \u9ed8\u8a8d\u60c5\u6cc1\u4e0b\u652f\u6301\u591a\u500b\u6578\u64da\u5eab\uff0c\u9019\u4e9b\u6578\u64da\u5eab\u7684\u7de8\u865f\u5f9e 0 \u958b\u59cb\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u9078\u64c7\u4e0d\u540c\u7684\u6578\u64da\u5eab\u4f86\u7d44\u7e54\u548c\u7ba1\u7406\u6578\u64da\u3002\u6bcf\u500b\u6578\u64da\u5eab\u90fd\u662f\u7368\u7acb\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u4e00\u500b\u6578\u64da\u5eab\u4e2d\u5b58\u5132\u7684\u6578\u64da\u4e0d\u6703\u5f71\u97ff\u5230\u5176\u4ed6\u6578\u64da\u5eab\u3002<\/p>\n

\u67e5\u8a62\u6240\u6709\u6578\u64da\u5eab\u7684\u57fa\u672c\u65b9\u6cd5<\/h2>\n

\u5728 Redis \u4e2d\uff0c\u6c92\u6709\u76f4\u63a5\u7684\u547d\u4ee4\u53ef\u4ee5\u4e00\u6b21\u6027\u67e5\u8a62\u6240\u6709\u6578\u64da\u5eab\u7684\u5167\u5bb9\u3002\u4e0d\u904e\uff0c\u6211\u5011\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u4f86\u5be6\u73fe\u9019\u4e00\u76ee\u6a19\uff1a<\/p>\n

    \n
  1. \u4f7f\u7528 SELECT<\/code> \u547d\u4ee4\u5207\u63db\u5230\u4e0d\u540c\u7684\u6578\u64da\u5eab\u3002<\/li>\n
  2. \u4f7f\u7528 KEYS<\/code> \u547d\u4ee4\u7372\u53d6\u7576\u524d\u6578\u64da\u5eab\u4e2d\u7684\u6240\u6709\u9375\u3002<\/li>\n
  3. \u4f7f\u7528 MGET<\/code> \u547d\u4ee4\u4e00\u6b21\u6027\u7372\u53d6\u591a\u500b\u9375\u7684\u503c\u3002<\/li>\n<\/ol>\n

    \u793a\u4f8b\u4ee3\u78bc<\/h3>\n
    for db in range(0, 16):  # \u5047\u8a2d\u6709 16 \u500b\u6578\u64da\u5eab\n    redis_client.execute_command('SELECT', db)\n    keys = redis_client.keys('*')  # \u7372\u53d6\u6240\u6709\u9375\n    if keys:\n        values = redis_client.mget(keys)  # \u7372\u53d6\u6240\u6709\u9375\u7684\u503c\n        print(f'DB {db}:')\n        for key, value in zip(keys, values):\n            print(f'  {key}: {value}')\n<\/code><\/pre>\n
    \u4e0a\u8ff0\u4ee3\u78bc\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u904d\u6b77\u6240\u6709\u6578\u64da\u5eab\u4e26\u7372\u53d6\u6bcf\u500b\u6578\u64da\u5eab\u4e2d\u7684\u6240\u6709\u9375\u53ca\u5176\u5c0d\u61c9\u7684\u503c\u3002\u9019\u6a23\u7684\u64cd\u4f5c\u96d6\u7136\u7c21\u55ae\uff0c\u4f46\u5728\u6578\u64da\u91cf\u8f03\u5927\u6642\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u56e0\u6b64\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u9700\u8981\u8b39\u614e\u4f7f\u7528\u3002<\/p>\n
    \u6027\u80fd\u8003\u91cf<\/h2>\n
    \u5728\u67e5\u8a62\u6240\u6709\u6578\u64da\u5eab\u6642\uff0c\u4f7f\u7528 KEYS<\/code> \u547d\u4ee4\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\uff0c\u56e0\u70ba\u5b83\u6703\u904d\u6b77\u6574\u500b\u6578\u64da\u5eab\u4f86\u67e5\u627e\u5339\u914d\u7684\u9375\u3002\u5c0d\u65bc\u5927\u578b\u6578\u64da\u5eab\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u963b\u585e\u3002\u56e0\u6b64\uff0c\u5efa\u8b70\u5728\u751f\u7522\u74b0\u5883\u4e2d\u4f7f\u7528 SCAN<\/code> \u547d\u4ee4\u4f86\u66ff\u4ee3 KEYS<\/code>\uff0c\u56e0\u70ba SCAN<\/code> \u662f\u4e00\u500b\u975e\u963b\u585e\u7684\u547d\u4ee4\uff0c\u53ef\u4ee5\u5206\u6279\u6b21\u5730\u8fd4\u56de\u9375\u3002<\/p>\n
    \u4f7f\u7528 SCAN \u547d\u4ee4\u7684\u793a\u4f8b<\/h3>\n
    for db in range(0, 16):\n    redis_client.execute_command('SELECT', db)\n    cursor = 0\n    while True:\n        cursor, keys = redis_client.scan(cursor)  # \u4f7f\u7528 SCAN \u547d\u4ee4\n        if keys:\n            values = redis_client.mget(keys)\n            print(f'DB {db}:')\n            for key, value in zip(keys, values):\n                print(f'  {key}: {value}')\n        if cursor == 0:\n            break\n<\/code><\/pre>\n
    \u9019\u6bb5\u4ee3\u78bc\u4f7f\u7528 SCAN<\/code> \u547d\u4ee4\u4f86\u904d\u6b77\u6bcf\u500b\u6578\u64da\u5eab\u4e2d\u7684\u9375\uff0c\u4e26\u4e14\u4e0d\u6703\u9020\u6210\u6027\u80fd\u74f6\u9838\u3002<\/p>\n
    \u7d50\u8ad6<\/h2>\n
    \u5728 Redis \u4e2d\u4e00\u6b21\u6027\u7372\u53d6\u6240\u6709\u6578\u64da\u5eab\u7684\u4fe1\u606f\u96d6\u7136\u4e0d\u662f\u4e00\u500b\u76f4\u63a5\u7684\u64cd\u4f5c\uff0c\u4f46\u901a\u904e\u9069\u7576\u7684\u547d\u4ee4\u548c\u65b9\u6cd5\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u9019\u4e00\u9700\u6c42\u3002\u7121\u8ad6\u662f\u4f7f\u7528 KEYS<\/code> \u9084\u662f SCAN<\/code> \u547d\u4ee4\uff0c\u958b\u767c\u8005\u90fd\u61c9\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n
    \u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684 Redis \u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u5730\u5340\u7684\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u4e86\u89e3\u5982\u4f55\u5728 Redis \u4e2d\u4e00\u6b21\u6027\u67e5\u8a62\u6240\u6709\u6578\u64da\u5eab\uff0c\u7372\u53d6\u66f4\u591a\u4fe1\u606f\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\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-98172","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98172","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=98172"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98172\/revisions"}],"predecessor-version":[{"id":98173,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98172\/revisions\/98173"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=98172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=98172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=98172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}