{"id":202266,"date":"2025-05-10T12:43:41","date_gmt":"2025-05-10T04:43:41","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202266\/"},"modified":"2025-05-10T12:43:41","modified_gmt":"2025-05-10T04:43:41","slug":"redis%e5%9c%a8%e7%94%b5%e5%95%86%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8%e6%8e%a2%e7%b4%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202266\/","title":{"rendered":"Redis\u5728\u7535\u5546\u4e2d\u7684\u5e94\u7528\u63a2\u7d22"},"content":{"rendered":"

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

Redis\u5728\u7535\u5546\u4e2d\u7684\u5e94\u7528\u63a2\u7d22<\/h1>\n

\u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u300aRedis\u5728\u7535\u5546\u4e2d\u7684\u5e94\u7528\u63a2\u7d22\u300b<\/span>\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6570\u636e\u5e93<\/span>\uff0c\u6216\u8005\u662f\u5bf9\u6570\u636e\u5e93<\/span>\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01<\/p>\n

Redis\u5728\u7535\u5546\u4e2d\u7684\u5e94\u7528\u63a2\u7d22<\/p>\n

\u968f\u7740\u7535\u5546\u884c\u4e1a\u7684\u84ec\u52c3\u53d1\u5c55\uff0c\u5546\u5bb6\u4eec\u9762\u4e34\u7740\u8d8a\u6765\u8d8a\u591a\u7684\u6311\u6218\uff0c\u5982\u9ad8\u5e76\u53d1\u8bbf\u95ee\u3001\u5b9e\u65f6\u6570\u636e\u66f4\u65b0\u3001\u5206\u5e03\u5f0f\u90e8\u7f72\u7b49\u3002\u5728\u8fd9\u6837\u7684\u73af\u5883\u4e0b\uff0c\u5982\u4f55\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u6269\u5c55\u6027\u6210\u4e3a\u4e86\u4e00\u4e2a\u4e9f\u5f85\u89e3\u51b3\u7684\u95ee\u9898\u3002Redis\u4f5c\u4e3a\u4e00\u79cd\u9ad8\u6027\u80fd\u7684\u5185\u5b58\u6570\u636e\u5e93\uff0c\u4e3a\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\u63d0\u4f9b\u4e86\u6781\u597d\u7684\u65b9\u6848\u3002\u672c\u6587\u5c06\u63a2\u8ba8Redis\u5728\u7535\u5546\u4e2d\u7684\u5e94\u7528\uff0c\u5305\u62ec\u8d2d\u7269\u8f66\u7ba1\u7406\u3001\u79d2\u6740\u6d3b\u52a8\u548c\u7f13\u5b58\u3002<\/p>\n

    \n
  1. \u8d2d\u7269\u8f66\u7ba1\u7406<\/li>\n<\/ol>\n

    \u5bf9\u4e8e\u4e00\u4e2a\u7535\u5546\u5e73\u53f0\u6765\u8bf4\uff0c\u8d2d\u7269\u8f66\u662f\u7528\u6237\u5728\u6d4f\u89c8\u4ea7\u54c1\u65f6\u4fdd\u5b58\u611f\u5174\u8da3\u5546\u54c1\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002\u4f20\u7edf\u7684\u8d2d\u7269\u8f66\u7ba1\u7406\u4f7f\u7528\u6570\u636e\u5e93\u5b58\u50a8\u8d2d\u7269\u8f66\u6570\u636e\uff0c\u5e76\u5728\u6bcf\u6b21\u6d4f\u89c8\u5546\u54c1\u3001\u6dfb\u52a0\u6216\u5220\u9664\u5546\u54c1\u65f6\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002\u8fd9\u79cd\u65b9\u5f0f\u7684\u6548\u7387\u8f83\u4f4e\uff0c\u7279\u522b\u662f\u5728\u9ad8\u5e76\u53d1\u8bbf\u95ee\u7684\u60c5\u51b5\u4e0b\u3002\u800c\u4f7f\u7528Redis\u4f5c\u4e3a\u8d2d\u7269\u8f66\u5b58\u50a8\u53ef\u4ee5\u5927\u5e45\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n

    \u4f7f\u7528Redis\u7684Hash\u7c7b\u578b\u53ef\u4ee5\u8f7b\u677e\u5730\u5b58\u50a8\u8d2d\u7269\u8f66\u6570\u636e\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u7528\u6237id\u4f5c\u4e3a\u54c8\u5e0c\u952e\uff0c\u5546\u54c1id\u548c\u6570\u91cf\u4f5c\u4e3a\u54c8\u5e0c\u503c\uff0c\u952e\u503c\u5bf9\u5b58\u50a8\u5728Redis\u4e2d\u3002\u5728\u7528\u6237\u6d4f\u89c8\u5546\u54c1\u3001\u6dfb\u52a0\u6216\u5220\u9664\u5546\u54c1\u65f6\uff0c\u53ea\u9700\u8fdb\u884c\u4e00\u6b21Redis\u7684\u8bfb\u5199\u64cd\u4f5c\uff0c\u53ef\u4ee5\u663e\u8457\u51cf\u8f7b\u6570\u636e\u5e93\u7684\u538b\u529b\u3002<\/p>\n

    \u4ee5\u4e0b\u662f\u8d2d\u7269\u8f66\u7ba1\u7406\u7684\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n

    \/\/ \u6dfb\u52a0\u5546\u54c1\u5230\u8d2d\u7269\u8f66\nredis.hset(\"cart:user1\", \"product1\", 2);\nredis.hset(\"cart:user1\", \"product2\", 1);\n\n\/\/ \u83b7\u53d6\u8d2d\u7269\u8f66\u5546\u54c1\u5217\u8868\nMap<String, String> cart = redis.hgetAll(\"cart:user1\");\nfor (Map.Entry<String, String> entry : cart.entrySet()) {\n    System.out.println(entry.getKey() + \": \" + entry.getValue());\n}\n\n\/\/ \u4ece\u8d2d\u7269\u8f66\u4e2d\u5220\u9664\u5546\u54c1\nredis.hdel(\"cart:user1\", \"product1\");<\/pre>\n
      \n
    1. \u79d2\u6740\u6d3b\u52a8<\/li>\n<\/ol>\n
      \u79d2\u6740\u6d3b\u52a8\u662f\u7535\u5546\u5e73\u53f0\u5e38\u89c1\u7684\u4fc3\u9500\u65b9\u5f0f\uff0c\u5bf9\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u5e76\u53d1\u80fd\u529b\u63d0\u51fa\u4e86\u6781\u9ad8\u7684\u8981\u6c42\u3002\u4f7f\u7528\u4f20\u7edf\u7684\u6570\u636e\u5e93\u6765\u5904\u7406\u79d2\u6740\u6d3b\u52a8\u7684\u8bf7\u6c42\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\u6216\u54cd\u5e94\u5ef6\u8fdf\u3002\u800cRedis\u901a\u8fc7\u5176\u9ad8\u6027\u80fd\u7684\u8bfb\u5199\u64cd\u4f5c\u548c\u539f\u5b50\u6027\u7684\u547d\u4ee4\uff0c\u4e3a\u79d2\u6740\u6d3b\u52a8\u63d0\u4f9b\u4e86\u4e00\u79cd\u9ad8\u6548\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n
      \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u8ba1\u6570\u5668\u529f\u80fd\u6765\u8bb0\u5f55\u5546\u54c1\u7684\u5e93\u5b58\u6570\u91cf\uff0c\u5e76\u901a\u8fc7WATCH\u3001MULTI\u548cEXEC\u547d\u4ee4\u4fdd\u8bc1\u5e76\u53d1\u8bf7\u6c42\u7684\u539f\u5b50\u6027\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u79d2\u6740\u6d3b\u52a8\u7684\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n
      \/\/ \u8bbe\u7f6e\u5546\u54c1\u5e93\u5b58\u6570\u91cf\nredis.set(\"product:stock\", 100);\n\n\/\/ \u5904\u7406\u79d2\u6740\u8bf7\u6c42\npublic void handleSeckillRequest(String userId) {\n    String key = \"seckill:product:stock\";\n    while (true) {\n        redis.watch(key);\n        int stock = Integer.parseInt(redis.get(key));\n        if (stock > 0) {\n            redis.multi();\n            redis.decr(key);\n\n            \/\/ \u6267\u884c\u79d2\u6740\u903b\u8f91\n            \/\/ ...\n\n            List<Object> result = redis.exec();\n            if (result == null) {\n                \/\/ \u79d2\u6740\u5931\u8d25\uff0c\u91cd\u65b0\u5c1d\u8bd5\u79d2\u6740\n                continue;\n            } else {\n                \/\/ \u79d2\u6740\u6210\u529f\n                \/\/ ...\n                break;\n            }\n        } else {\n            \/\/ \u5546\u54c1\u5df2\u552e\u7f44\n            \/\/ ...\n            break;\n        }\n    }\n}<\/pre>\n
        \n
      1. \u7f13\u5b58<\/li>\n<\/ol>\n
        \u7535\u5546\u5e73\u53f0\u5927\u91cf\u4f7f\u7528\u7f13\u5b58\u6765\u63d0\u9ad8\u7cfb\u7edf\u7684\u8bfb\u53d6\u6027\u80fd\u548c\u54cd\u5e94\u901f\u5ea6\u3002Redis\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\u7f13\u5b58\u6570\u636e\u5e93\u6765\u5b58\u50a8\u7ecf\u5e38\u88ab\u8bbf\u95ee\u7684\u70ed\u70b9\u6570\u636e\uff0c\u51cf\u8f7b\u6570\u636e\u5e93\u7684\u8d1f\u8f7d\u3002<\/p>\n
        \u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5546\u54c1\u7684\u8be6\u60c5\u9875\u5b58\u50a8\u5728Redis\u4e2d\uff0c\u5f53\u7528\u6237\u8bbf\u95ee\u5546\u54c1\u8be6\u60c5\u9875\u65f6\uff0c\u9996\u5148\u68c0\u67e5\u662f\u5426\u5b58\u5728\u7f13\u5b58\u6570\u636e\uff0c\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5219\u4ece\u6570\u636e\u5e93\u4e2d\u8bfb\u53d6\u6570\u636e\u5e76\u5b58\u5165Redis\u4e2d\uff1b\u5982\u679c\u5b58\u5728\u7f13\u5b58\u6570\u636e\uff0c\u5219\u76f4\u63a5\u4eceRedis\u4e2d\u83b7\u53d6\uff0c\u5927\u5e45\u51cf\u5c11\u6570\u636e\u5e93\u7684\u8bbf\u95ee\u6b21\u6570\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n
        \u4ee5\u4e0b\u662f\u7f13\u5b58\u7684\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n
        \/\/ \u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u5546\u54c1\u8be6\u60c5\u9875\npublic Product getProductDetail(int productId) {\n    String key = \"product:\" + productId;\n    Product product = redis.get(key);\n    if (product == null) {\n        \/\/ \u4ece\u6570\u636e\u5e93\u4e2d\u8bfb\u53d6\u6570\u636e\n        product = database.getProduct(productId);\n        \/\/ \u5b58\u5165\u7f13\u5b58\u4e2d\uff0c\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\n        redis.setex(key, 3600, product);\n    }\n    return product;\n}<\/pre>\n
        \u603b\u7ed3\uff1a<\/p>\n
        \u672c\u6587\u63a2\u7d22\u4e86Redis\u5728\u7535\u5546\u4e2d\u7684\u5e94\u7528\uff0c\u5305\u62ec\u8d2d\u7269\u8f66\u7ba1\u7406\u3001\u79d2\u6740\u6d3b\u52a8\u548c\u7f13\u5b58\u3002\u901a\u8fc7\u4f7f\u7528Redis\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u53ef\u6269\u5c55\u6027\uff0c\u5e76\u51cf\u8f7b\u6570\u636e\u5e93\u7684\u8d1f\u8f7d\u3002\u8fd9\u4e9b\u53ea\u662fRedis\u5728\u7535\u5546\u4e2d\u7684\u4e00\u90e8\u5206\u5e94\u7528\uff0c\u901a\u8fc7\u7075\u6d3b\u8fd0\u7528Redis\u7684\u5404\u79cd\u529f\u80fd\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u4f18\u5316\u7535\u5546\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n
        \n
        \n <\/dt>\n
        \n   Redis\uff1a\u9ad8\u6548\u5904\u7406\u5927\u6570\u636e\u91cf\u7684\u5229\u5668\n <\/dd>\n<\/dl>\n
        \n
        \n <\/dt>\n
        \n   PHP\u5f00\u53d1\u4e2d\u5982\u4f55\u4f7f\u7528Memcache\u8fdb\u884c\u9ad8\u6548\u7684\u6570\u636e\u7f13\u5b58\u548c\u6392\u5e8f\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
        Redis\u5728\u7535\u5546\u4e2d\u7684\u5e94\u7528\u63a2\u7d22 \u73cd...<\/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-202266","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202266","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=202266"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202266\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}