{"id":202252,"date":"2025-05-10T14:23:07","date_gmt":"2025-05-10T06:23:07","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202252\/"},"modified":"2025-05-10T14:23:07","modified_gmt":"2025-05-10T06:23:07","slug":"redis%e5%9c%a8%e6%99%ba%e8%83%bd%e5%ae%b6%e5%b1%85%e7%b3%bb%e7%bb%9f%e4%b8%ad%e7%9a%84%e4%bd%9c%e7%94%a8%e5%8f%8a%e5%ba%94%e7%94%a8%e6%a1%88%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202252\/","title":{"rendered":"Redis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u53ca\u5e94\u7528\u6848\u4f8b"},"content":{"rendered":"

<\/b> <\/p>\n

Redis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u53ca\u5e94\u7528\u6848\u4f8b<\/h1>\n

\u5404\u4f4d\u5c0f\u4f19\u4f34\u4eec\uff0c\u5927\u5bb6\u597d\u5440\uff01\u770b\u770b\u4eca\u5929\u6211\u53c8\u7ed9\u5404\u4f4d\u5e26\u6765\u4e86\u4ec0\u4e48\u6587\u7ae0\uff1f\u672c\u6587\u6807\u9898\u662f<\/span>\u300aRedis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u53ca\u5e94\u7528\u6848\u4f8b\u300b<\/span>\uff0c\u5f88\u660e\u663e\u662f\u5173\u4e8e\u6570\u636e\u5e93<\/span>\u7684\u6587\u7ae0\u54c8\u54c8\u54c8\uff0c\u5176\u4e2d\u5185\u5bb9\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\uff0c\u5982\u679c\u80fd\u5e2e\u5230\u4f60\uff0c\u89c9\u5f97\u5f88\u4e0d\u9519\u7684\u8bdd\uff0c\u6b22\u8fce\u5404\u4f4d\u591a\u591a\u70b9\u8bc4\u548c\u5206\u4eab\uff01<\/span><\/p>\n

Redis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u53ca\u5e94\u7528\u6848\u4f8b<\/p>\n

\u968f\u7740\u7269\u8054\u7f51\u6280\u672f\u7684\u5feb\u901f\u53d1\u5c55\uff0c\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u7684\u5e94\u7528\u9010\u6e10\u666e\u53ca\u3002\u800cRedis\u4f5c\u4e3a\u4e00\u79cd\u5feb\u901f\u3001\u53ef\u9760\u3001\u53ef\u6269\u5c55\u7684\u5185\u5b58\u6570\u636e\u5e93\uff0c\u4e5f\u9010\u6e10\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u626e\u6f14\u7740\u91cd\u8981\u7684\u89d2\u8272\u3002\u672c\u6587\u5c06\u4ecb\u7ecdRedis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u4ee5\u53ca\u5e94\u7528\u6848\u4f8b\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001Redis\u5728\u667a\u80fd\u5bb6\u5c45\u4e2d\u7684\u4f5c\u7528<\/p>\n

    \n
  1. \u6570\u636e\u7f13\u5b58\uff1a\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u6d89\u53ca\u5230\u6d77\u91cf\u7684\u6570\u636e\uff0c\u5305\u62ec\u4f20\u611f\u5668\u6570\u636e\u3001\u8bbe\u5907\u72b6\u6001\u6570\u636e\u3001\u7528\u6237\u6570\u636e\u7b49\u3002Redis\u901a\u8fc7\u5c06\u5e38\u7528\u7684\u6570\u636e\u7f13\u5b58\u5230\u5185\u5b58\u4e2d\uff0c\u5b9e\u73b0\u4e86\u9ad8\u901f\u8bfb\u5199\uff0c\u5927\u5927\u63d0\u5347\u4e86\u7cfb\u7edf\u7684\u54cd\u5e94\u901f\u5ea6\u3002<\/li>\n
  2. \u5206\u5e03\u5f0f\u9501\uff1a\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u53ef\u80fd\u5b58\u5728\u591a\u4e2a\u8bbe\u5907\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4e2a\u8d44\u6e90\u7684\u60c5\u51b5\uff0c\u4e3a\u4e86\u907f\u514d\u5e76\u53d1\u51b2\u7a81\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u5206\u5e03\u5f0f\u9501\u673a\u5236\u3002\u901a\u8fc7Redis\u7684\u539f\u5b50\u64cd\u4f5c\uff0c\u53ef\u4ee5\u786e\u4fdd\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u8bbe\u5907\u80fd\u591f\u83b7\u5f97\u9501\uff0c\u4fdd\u8bc1\u8d44\u6e90\u7684\u5b89\u5168\u8bbf\u95ee\u3002<\/li>\n
  3. \u53d1\u5e03\u8ba2\u9605\uff1a\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\uff0c\u8bbe\u5907\u72b6\u6001\u7684\u5b9e\u65f6\u66f4\u65b0\u5bf9\u4e8e\u7528\u6237\u4f53\u9a8c\u81f3\u5173\u91cd\u8981\u3002Redis\u7684\u53d1\u5e03\u8ba2\u9605\u529f\u80fd\u53ef\u4ee5\u5c06\u8bbe\u5907\u72b6\u6001\u7684\u53d8\u5316\u5feb\u901f\u63a8\u9001\u7ed9\u7528\u6237\uff0c\u5b9e\u73b0\u5b9e\u65f6\u66f4\u65b0\u3002<\/li>\n<\/ol>\n

    \u4e8c\u3001Redis\u5728\u667a\u80fd\u5bb6\u5c45\u4e2d\u7684\u5e94\u7528\u6848\u4f8b<\/p>\n

    \u4e3a\u4e86\u66f4\u52a0\u5177\u4f53\u5730\u8bf4\u660eRedis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\uff0c\u4e0b\u9762\u5c06\u4ecb\u7ecd\u4e00\u4e2a\u667a\u80fd\u706f\u63a7\u7cfb\u7edf\u7684\u5e94\u7528\u6848\u4f8b\u3002<\/p>\n

    \u5047\u8bbe\u667a\u80fd\u706f\u63a7\u7cfb\u7edf\u4e2d\u6709\u591a\u4e2a\u706f\u5177\u8bbe\u5907\u548c\u4e00\u4e2a\u4e2d\u592e\u63a7\u5236\u5668\uff0c\u63a7\u5236\u5668\u7528\u4e8e\u63a5\u6536\u7528\u6237\u7684\u6307\u4ee4\uff0c\u5e76\u5c06\u6307\u4ee4\u53d1\u9001\u7ed9\u5bf9\u5e94\u7684\u706f\u5177\u8bbe\u5907\u3002\u8fd9\u4e2a\u7cfb\u7edf\u4e2d\uff0c\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u624b\u673a\u5e94\u7528\u6216\u8005\u8bed\u97f3\u8bc6\u522b\u7b49\u65b9\u5f0f\u53d1\u9001\u6307\u4ee4\uff0c\u8981\u6c42\u5b9e\u73b0\u5f00\u5173\u706f\u3001\u8c03\u8282\u4eae\u5ea6\u7b49\u529f\u80fd\u3002<\/p>\n

      \n
    1. \u6570\u636e\u7f13\u5b58<\/li>\n<\/ol>\n

      \u667a\u80fd\u706f\u63a7\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u6765\u7f13\u5b58\u8bbe\u5907\u72b6\u6001\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u6bcf\u4e2a\u706f\u5177\u8bbe\u5907\u7684\u72b6\u6001\u53ef\u4ee5\u5b58\u50a8\u5728Redis\u7684\u54c8\u5e0c\u8868\u4e2d\uff0c\u952e\u4e3a\u8bbe\u5907\u7684\u7f16\u53f7\uff0c\u503c\u4e3a\u8bbe\u5907\u7684\u72b6\u6001\uff08\u5f00\/\u5173\u3001\u4eae\u5ea6\u7b49\uff09\u3002\u5f53\u7528\u6237\u53d1\u9001\u6307\u4ee4\u65f6\uff0c\u63a7\u5236\u5668\u53ef\u4ee5\u76f4\u63a5\u4eceRedis\u7f13\u5b58\u4e2d\u8bfb\u53d6\u8bbe\u5907\u72b6\u6001\uff0c\u907f\u514d\u9891\u7e41\u8bbf\u95ee\u6570\u636e\u5e93\uff0c\u63d0\u5347\u7cfb\u7edf\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n

      \u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

      import redis\n\n# \u8fde\u63a5Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u4fdd\u5b58\u8bbe\u5907\u72b6\u6001\ndef save_device_status(device_id, status):\n    r.hset(\"devices\", device_id, status)\n\n# \u83b7\u53d6\u8bbe\u5907\u72b6\u6001\ndef get_device_status(device_id):\n    return r.hget(\"devices\", device_id)\n\n# \u793a\u4f8b\u4ee3\u7801\uff0c\u8bbe\u7f6e\u8bbe\u59071\u72b6\u6001\u4e3a\u5f00\nsave_device_status(1, \"\u5f00\")\n\n# \u793a\u4f8b\u4ee3\u7801\uff0c\u83b7\u53d6\u8bbe\u59071\u72b6\u6001\nstatus = get_device_status(1)\nprint(status)<\/pre>\n
        \n
      1. \u5206\u5e03\u5f0f\u9501<\/li>\n<\/ol>\n
        \u5728\u667a\u80fd\u706f\u63a7\u7cfb\u7edf\u4e2d\uff0c\u4e3a\u4e86\u907f\u514d\u591a\u4e2a\u8bbe\u5907\u540c\u65f6\u4fee\u6539\u540c\u4e00\u4e2a\u8bbe\u5907\u7684\u72b6\u6001\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u5206\u5e03\u5f0f\u9501\u6765\u4fdd\u8bc1\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u8bbe\u5907\u5bf9\u67d0\u4e2a\u8bbe\u5907\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n
        \u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
        import redis\nimport time\n\n# \u8fde\u63a5Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u83b7\u53d6\u9501\ndef acquire_lock(lock_name, acquire_timeout=10):\n    end_time = time.time() + acquire_timeout\n    while time.time() < end_time:\n        if r.setnx(lock_name, 1):\n            r.expire(lock_name, acquire_timeout)\n            return True\n        time.sleep(0.001)\n    return False\n\n# \u91ca\u653e\u9501\ndef release_lock(lock_name):\n    r.delete(lock_name)\n\n# \u793a\u4f8b\u4ee3\u7801\uff0c\u8bbe\u59071\u60f3\u8981\u64cd\u4f5c\u8bbe\u59072\ndevice1 = 1\ndevice2 = 2\n\n# \u8bbe\u59071\u83b7\u53d6\u9501\nif acquire_lock(device2):\n    # \u64cd\u4f5c\u8bbe\u59072...\n    # \u91ca\u653e\u9501\n    release_lock(device2)\nelse:\n    # \u83b7\u53d6\u9501\u5931\u8d25\n    print(\"\u83b7\u53d6\u9501\u5931\u8d25\")<\/pre>\n
          \n
        1. \u53d1\u5e03\u8ba2\u9605<\/li>\n<\/ol>\n
          \u5728\u667a\u80fd\u706f\u63a7\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u53d1\u5e03\u8ba2\u9605\u529f\u80fd\u5b9e\u73b0\u5b9e\u65f6\u63a8\u9001\u8bbe\u5907\u72b6\u6001\u53d8\u5316\u7ed9\u7528\u6237\u3002<\/p>\n
          \u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
          import redis\n\n# \u8fde\u63a5Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u8ba2\u9605\u8bbe\u5907\u72b6\u6001\u53d8\u5316\u7684\u9891\u9053\ndef subscribe_channel():\n    pubsub = r.pubsub()\n    pubsub.subscribe('device_status')\n\n    for item in pubsub.listen():\n        if item['type'] == 'message':\n            device_id, status = item['data'].decode().split(':')\n            print(\"\u8bbe\u5907{}\u7684\u72b6\u6001\u53d8\u4e3a{}\".format(device_id, status))\n\n# \u793a\u4f8b\u4ee3\u7801\uff0c\u8bbe\u59071\u7684\u72b6\u6001\u53d8\u4e3a\u5f00\uff0c\u53d1\u5e03\u6d88\u606f\nr.publish('device_status', '1:\u5f00')\n\n# \u8ba2\u9605\u8bbe\u5907\u72b6\u6001\u53d8\u5316\u7684\u9891\u9053\uff0c\u63a5\u6536\u6d88\u606f\u5e76\u6253\u5370\nsubscribe_channel()<\/pre>\n
          \u603b\u7ed3\uff1a<\/p>\n
          \u672c\u6587\u7b80\u8981\u4ecb\u7ecd\u4e86Redis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u53ca\u5e94\u7528\u6848\u4f8b\u3002\u901a\u8fc7\u6570\u636e\u7f13\u5b58\u3001\u5206\u5e03\u5f0f\u9501\u548c\u53d1\u5e03\u8ba2\u9605\u7b49\u529f\u80fd\uff0cRedis\u80fd\u591f\u63d0\u9ad8\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u4ee5\u4e0a\u63d0\u4f9b\u7684\u4ee3\u7801\u793a\u4f8b\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7406\u89e3Redis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n
          \n
          \n <\/dt>\n
          \n   Redis\uff1a\u9ad8\u6548\u5b58\u50a8\u5927\u89c4\u6a21\u7528\u6237\u6570\u636e\u7684\u795e\u5668\n <\/dd>\n<\/dl>\n
          \n
          \n <\/dt>\n
          \n   PHP\u5f00\u53d1\u4e2d\u5982\u4f55\u4f7f\u7528Memcache\u8fdb\u884c\u6570\u636e\u7f13\u5b58\u548c\u67e5\u8be2\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
          Redis\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-202252","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202252","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202252"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202252\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}