{"id":201788,"date":"2025-05-10T11:34:18","date_gmt":"2025-05-10T03:34:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201788\/"},"modified":"2025-05-10T11:34:18","modified_gmt":"2025-05-10T03:34:18","slug":"%e4%bd%bf%e7%94%a8redis%e8%a7%a3%e5%86%b3%e9%ab%98%e5%b9%b6%e5%8f%91%e6%96%b9%e6%a1%88%e5%8f%8a%e6%80%9d%e8%b7%af%e8%a7%a3%e8%af%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201788\/","title":{"rendered":"\u4f7f\u7528Redis\u89e3\u51b3\u9ad8\u5e76\u53d1\u65b9\u6848\u53ca\u601d\u8def\u89e3\u8bfb"},"content":{"rendered":"

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

\u4f7f\u7528Redis\u89e3\u51b3\u9ad8\u5e76\u53d1\u65b9\u6848\u53ca\u601d\u8def\u89e3\u8bfb<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5206\u4eab\u300a\u4f7f\u7528Redis\u89e3\u51b3\u9ad8\u5e76\u53d1\u65b9\u6848\u53ca\u601d\u8def\u89e3\u8bfb\u300b\uff0c\u8986\u76d6\u4e86\u6570\u636e\u5e93\u7684\u5e38\u89c1\u57fa\u7840\u77e5\u8bc6\uff0c\u5176\u5b9e\u4e00\u4e2a\u8bed\u8a00\u7684\u5168\u90e8\u77e5\u8bc6\u70b9\u4e00\u7bc7\u6587\u7ae0\u662f\u4e0d\u53ef\u80fd\u8bf4\u5b8c\u7684\uff0c\u4f46\u5e0c\u671b\u901a\u8fc7\u8fd9\u4e9b\u95ee\u9898\uff0c\u8ba9\u8bfb\u8005\u5bf9\u81ea\u5df1\u7684\u638c\u63e1\u7a0b\u5ea6\u6709\u4e00\u5b9a\u7684\u8ba4\u8bc6(B \u6570)\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u66f4\u597d\u7684\u638c\u63e1\u5b83\u3002<\/p>\n

NoSQL<\/h2>\n

Not Only SQL\u7684\u7b80\u79f0\u3002NoSQL\u662f\u89e3\u51b3\u4f20\u7edf\u7684RDBMS\u5728\u5e94\u5bf9\u67d0\u4e9b\u95ee\u9898\u65f6\u6bd4\u8f83\u4e4f\u529b\u800c\u63d0\u51fa\u7684\u3002<\/p>\n

\u5373\u975e\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u5b83\u4eec\u4e0d\u4fdd\u8bc1\u5173\u7cfb\u6570\u636e\u7684ACID\u7279\u6027\uff0c\u6570\u636e\u4e4b\u95f4\u4e00\u822c\u6ca1\u6709\u5173\u8054\uff0c\u5728\u6269\u5c55\u4e0a\u5c31\u975e\u5e38\u5bb9\u6613\u5b9e\u73b0\uff0c\u5e76\u4e14\u62e5\u6709\u8f83\u9ad8\u7684\u6027\u80fd\u3002<\/p>\n

Redis<\/h2>\n

redis\u662fnosql\u7684\u5178\u578b\u4ee3\u8868\uff0c\u4e5f\u662f\u76ee\u524d\u4e92\u8054\u7f51\u516c\u53f8\u7684\u5fc5\u7528\u6280\u672f\u3002<\/p>\n

redis\u662f\u952e\u503c(Key-Value)\u5b58\u50a8\u6570\u636e\u5e93\uff0c\u4e3b\u8981\u4f1a\u4f7f\u7528\u5230\u54c8\u5e0c\u8868\u3002\u5927\u591a\u6570\u65f6\u5019\u662f\u76f4\u63a5\u4ee5\u7f13\u5b58\u7684\u5f62\u5f0f\u88ab\u4f7f\u7528\uff0c\u4f7f\u5f97\u8bf7\u6c42\u4e0d\u76f4\u63a5\u8bbf\u95ee\u5230\u78c1\u76d8\uff0c\u6240\u4ee5\u6548\u7387\u65b9\u9762\u662f\u5f88\u4e0d\u9519\u7684\uff0c\u5b8c\u5168\u80fd\u6ee1\u8db3\u4e2d\u5c0f\u578b\u4f01\u4e1a\u7684\u4f7f\u7528\u9700\u6c42\u3002<\/p>\n

\u5e38\u7528\u6570\u636e\u7c7b\u578b<\/strong><\/p>\n

    \n
  • \u5b57\u7b26\u4e32string<\/li>\n
  • \u6563\u5217hash<\/li>\n
  • \u5217\u8868list<\/li>\n
  • \u96c6\u5408sets<\/li>\n
  • \u6709\u5e8f\u96c6\u5408sort set<\/li>\n<\/ul>\n

    \u4f7f\u7528\u9891\u7387\u4e0astring\u548chash\u4f1a\u9ad8\u4e00\u4e9b\uff0c\u5404\u4e2a\u7c7b\u578b\u6709\u5404\u81ea\u7684\u64cd\u4f5c\u547d\u4ee4\uff0c\u65e0\u975e\u589e\u5220\u6539\u67e5\uff0c\u5177\u4f53\u7684\u547d\u4ee4\u540e\u9762\u6211\u4f1a\u6574\u7406\u4e00\u4efd\u3002<\/p>\n

    \u75db\u70b9<\/h2>\n

    web\u5e94\u7528\u5728\u4f17\u591a\u8bf7\u6c42\u540c\u65f6\u53d1\u751f\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u8bfb\u53d6\u3001\u5b58\u50a8\u4e0a\u51fa\u73b0\u9519\u8bef\uff0c\u5373\u53d1\u751f\u810f\u8bfb\u3001\u810f\u6570\u636e\u751f\u6210\u3002<\/p>\n

    \u5728\u5206\u5e03\u5f0f\u9879\u76ee\u4e0b\uff0c\u4f1a\u51fa\u73b0\u66f4\u591a\u7684\u95ee\u9898\u3002<\/p>\n

    \u601d\u8def<\/h2>\n

    \u5e76\u53d1\u65f6\uff0c\u672c\u8d28\u5176\u5b9e\u5c31\u662f\u591a\u4e2a\u8bf7\u6c42\u540c\u65f6\u8fdb\u6765\u4e86\uff0c\u6ca1\u529e\u6cd5\u6b63\u786e\u7684\u53bb\u8fdb\u884c\u5904\u7406\u3002<\/p>\n

    \u53ef\u4ee5\u5c06\u6240\u6709\u7684\u8bf7\u6c42\u653e\u5728 \u4e00\u4e2a\u961f\u5217\uff0c\u8ba9\u8bf7\u6c42\u4eec\u6309\u7167\u4e00\u4e2a\u987a\u5e8f\uff0c\u6328\u4e2a\u8fdb\u6765\u6267\u884c\u4e1a\u52a1\u903b\u8f91\u3002\u76ee\u524d\u6210\u719f\u7684\u89e3\u51b3\u65b9\u6848\u5c31\u662f\u4f7f\u7528\u6d88\u606f\u961f\u5217\uff0c\u4e0b\u6b21\u6211\u4f1a\u6574\u7406\u4e00\u7bc7\u6d88\u606f\u961f\u5217\u5904\u7406\u9ad8\u5e76\u53d1\u7684\uff1b<\/p>\n

    \u8fd8\u6709\u4e00\u4e2a\u65b9\u6cd5\u662f\u76f4\u63a5\u5c06\u5e76\u884c\u8f6c\u4e3a\u4e32\u884c\uff0cJava\u63d0\u4f9b\u4e86synchronized\uff0c\u5373\u540c\u6b65\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u5728\u6548\u7387\u8981\u6c42\u6bd4\u8f83\u82db\u523b\u7684\u5730\u65b9 \u6216\u8005 \u5206\u5e03\u5f0f\u9879\u76ee\u4e0b\u8fd8\u662f\u4e0d\u592a\u5408\u9002\u7684\u65b9\u6848\uff0c\u8fd9\u91cc\u5c31\u5f15\u51fa\u4e86\u4f7f\u7528redis\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff0c\u4ece\u800c\u89e3\u51b3\u5e76\u53d1\u95ee\u9898\u3002<\/p>\n

    \u5206\u5e03\u5f0f\u9501<\/h2>\n

    \u5728\u5206\u5e03\u5f0f\u9879\u76ee\u4e2d\uff0c\u4f7f\u7528\u4e00\u4e2a\u552f\u4e00\u3001\u901a\u7528\u3001\u6548\u7387\u9ad8\u7684\u6807\u8bc6\uff0c\u6765\u8868\u793a\u4e0a\u9501\u548c\u89e3\u9501\u3002<\/p>\n

    redis\u5b9e\u73b0\u8d77\u6765\u5f88\u7b80\u5355\uff0c\u5373\u5bf9\u4e00\u4e2akey\u662f\u5426\u5b58\u5728\u6765\u8868\u793a\u662f\u5426\u4e0a\u9501\u3001\u662f\u5426\u89e3\u9501\u3002<\/p>\n

    \u4ee5string\u7c7b\u578b\u4e3e\u4f8b\uff1a<\/p>\n

    Integer stock = goodsMapper.getStock();\nif (stock > 0) {\n    stock =- 1;\n    goodsMapper.updateStock(stock);\n}<\/pre>\n
    \u4ee5\u4e0a\u662f\u6700\u7b80\u5355\u7684\u79d2\u6740\u4f2a\u4ee3\u7801\uff0c\u6211\u4eec\u5c1d\u8bd5\u7528redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n
    \/\/ \u8fd9\u91cc\u662f\u9519\u8bef\u4ee3\u7801\uff0c\u53ea\u662f\u4e00\u4e2a\u601d\u8003\u8fc7\u7a0b\uff0c\u8bf7\u8010\u5fc3\u770b\u5b8c\u54e6\nString key = \"REDIS_DISTRIBUTION_LOCKER\"; \/\/ \u5206\u5e03\u5f0f\u9501\u540d\u79f0\nString value = jedisUtils.get(key);\nif (value != null) { \/\/ \u672a\u4e0a\u9501\n    \/\/ wingzingliu\n    jedisUtils.set(key, 1); \/\/ \u4e0a\u9501\n    Integer stock = goodsMapper.getStock();\n    if (stock > 0) {\n        stock =- 1;\n        goodsMapper.updateStock(stock);\n        jedisUtils.del(key); \/\/ \u91ca\u653e\u9501\n    }\n}<\/pre>\n
    \u4ee5\u4e0a\u4ee3\u7801\u53ef\u80fd\u4f1a\u51fa\u73b0\u4e00\u4e2a\u95ee\u9898\uff0c\u5c31\u662f\u5f53\u540c\u65f6\u591a\u4e2a\u8bf7\u6c42\u8fdb\u6765\uff0c\u67d0\u6b21\u591a\u4e2a\u8bf7\u6c42\u90fd\u62ff\u5230value\u4e3a\u7a7a\uff0c\u7ebf\u7a0bA\u8fdb\u5165if \u8d70\u5230\/\/ wingzingliu\u8fd9\u91cc\u7684\u65f6\u5019\uff0c\u8fd8\u672a\u4e0a\u9501\uff0c\u5176\u4ed6\u8bf7\u6c42\u4e5f\u8fdb\u6765\u4e86\uff0c\u8fd9\u6837\u5c31\u4f1a\u51fa\u73b0\u810f\u6570\u636e\u4e86\u3002<\/p>\n
    \u8fd9\u91cc\u7684\u4ee3\u7801\u95ee\u9898\u5c31\u662f\u51fa\u5728\u6ca1\u6709\u8003\u8651\u539f\u5b50\u6027\u95ee\u9898\u3002<\/p>\n
    \u6240\u4ee5\u6211\u4eec\u8981\u4f7f\u7528\u5230redis\u7684\u4e00\u4e2asetNx\u547d\u4ee4\uff0c\u672c\u8d28\u4e5f\u662f\u8bbe\u7f6e\u503c\uff0c\u4f46\u662f\u8fd9\u662f\u4e00\u4e2a\u539f\u5b50\u64cd\u4f5c\uff0c\u6267\u884c\u4e4b\u540e\u4f1a\u8fd4\u56de\u662f\u5426\u8bbe\u7f6e\u6210\u529f\u3002<\/p>\n
    redis> SETNX job \"programmer\"    # job \u8bbe\u7f6e\u6210\u529f\n(integer) 1\n \nredis> SETNX job \"code-farmer\"   # \u5c1d\u8bd5\u8986\u76d6 job \uff0c\u5931\u8d25\n(integer) 0\n \nredis> GET job                   # \u6ca1\u6709\u88ab\u8986\u76d6\n\"programmer\"<\/pre>\n
    \u91cd\u70b9\u5173\u6ce8 \u5f53\u6709\u503c\u65f6\uff0c\u4f1a\u5931\u8d25\uff0c\u8fd4\u56de0\u3002\u6240\u4ee5\u6211\u4eec\u7684\u4ee3\u7801\u4f1a\u6539\u9020\u6210\u4ee5\u4e0b\u8fd9\u4e2a\u6837\u5b50\u3002<\/p>\n
    \/\/ \u8fd9\u91cc\u662f\u9519\u8bef\u4ee3\u7801\uff0c\u53ea\u662f\u4e00\u4e2a\u601d\u8003\u8fc7\u7a0b\uff0c\u8bf7\u8010\u5fc3\u770b\u5b8c\u54e6\nString key = \"REDIS_DISTRIBUTION_LOCKER\"; \/\/ \u5206\u5e03\u5f0f\u9501\u540d\u79f0\nLong result = jedisUtils.setNx(key, 1);\nif (result > 0) { \/\/ \u4e0a\u9501\u6210\u529f\uff0c\u8fdb\u5165\u903b\u8f91\n    \/\/ wingzingliu1\n    Integer stock = goodsMapper.getStock();\n    if (stock > 0) {\n        stock =- 1;\n        goodsMapper.updateStock(stock);\n \n        System.out.println(\"\u8d2d\u4e70\u6210\u529f!\");\n    } else {\n        System.out.println(\"\u6ca1\u6709\u5e93\u5b58\u4e86!\");\n    }\n    \/\/ wingzingliu2\n    jedisUtils.del(key); \/\/ \u91ca\u653e\u9501\n}<\/pre>\n
    \u4ee5\u4e0a\u6211\u4eec\u5c31\u53ef\u4ee5\u4fdd\u8bc1\u539f\u5b50\u6027\uff0c\u80fd\u6b63\u786e\u7684\u6309\u7167\u987a\u5e8f\u53bb\u5904\u7406\u3002<\/p>\n
    \u53ef\u662f\u8fd8\u6709\u4e00\u4e2a\u9690\u85cf\u7684\u95ee\u9898\uff0c\u5c31\u662f\u5f53\u67d0\u4e2a\u7ebf\u7a0b\u6267\u884c\u4e0a\u9501\u6210\u529f\u540e\uff0c\u5728wingzingliu1\u5230wingzingliu2\u4e4b\u95f4\u65f6\uff0c\u7a0b\u5e8f\u629b\u5f02\u5e38\u4e86\uff0c\u90a3\u4e48\u7a0b\u5e8f\u7ec8\u6b62\u4e86\uff0c\u5c31\u65e0\u6cd5\u91ca\u653e\u9501\uff0c\u5176\u4ed6\u7ebf\u7a0b\u4e5f\u90fd\u8fdb\u4e0d\u6765\u4e86\u3002<\/p>\n
    \u89e3\u51b3\u65b9\u6848\u662f\u52a0\u4e0atry catch finally\u5757\uff0c\u5728finally\u91cc\u9762\u53bb\u91ca\u653e\u9501\u3002<\/p>\n
    \u53ef\u662f\u90a3\u5982\u679c\u662f\u5b95\u673a\u5462\uff1f\u4e0a\u9501\u4e4b\u540e\u5b95\u673a\u4e86\uff0cfinally\u91cc\u9762\u7684\u4f9d\u7136\u4e0d\u4f1a\u6267\u884c\uff0c\u9501\u6ca1\u6709\u5f97\u5230\u91ca\u653e\uff0c\u4e0d\u624b\u52a8\u5904\u7406\u7684\u60c5\u51b5\u4e0b\uff0c\u4ee5\u540e\u6240\u6709\u7ebf\u7a0b\u4e5f\u65e0\u6cd5\u8fdb\u5165\u3002<\/p>\n
    \u6240\u4ee5\u5f15\u5165\u4e86redis\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u5230\u4e86\u67d0\u4e2a\u65f6\u95f4\u81ea\u52a8\u89e3\u9501\u3002<\/p>\n
    \/\/ \u8fd9\u91cc\u662f\u4e0d\u591f\u5b8c\u5584\u7684\u4ee3\u7801\uff0c\u8bf7\u8010\u5fc3\u770b\u5b8c\u54e6\ntry {\n    String key = \"REDIS_DISTRIBUTION_LOCKER\"; \/\/ \u5206\u5e03\u5f0f\u9501\u540d\u79f0\n    Long result = jedisUtils.setNx(key, 1, 30); \/\/ \u5047\u8bbe\u5904\u7406\u903b\u8f91\u9700\u898120s\u5de6\u53f3\uff0c\u8bbe\u7f6e\u4e8630\u79d2\u81ea\u52a8\u8fc7\u671f\n    if (result > 0) { \/\/ \u4e0a\u9501\u6210\u529f\uff0c\u8fdb\u5165\u903b\u8f91\n        Integer stock = goodsMapper.getStock();\n        if (stock > 0) {\n            stock =- 1;\n            goodsMapper.updateStock(stock);\n \n            System.out.println(\"\u8d2d\u4e70\u6210\u529f!\");\n        } else {\n            System.out.println(\"\u6ca1\u6709\u5e93\u5b58\u4e86!\");\n        }\n    }\n} catch (Exception e) {\n    \n} finally {\n    jedisUtils.del(key); \/\/ \u91ca\u653e\u9501\n}<\/pre>\n
    \u4ee5\u4e0a\u662f\u6bd4\u8f83\u5b8c\u5584\u7684\u5206\u5e03\u5f0f\u9501\u4e86\uff0c\u4f46\u662f\u8fd8\u6709\u4e00\u4e2a\u5c0f\u7455\u75b5\uff0c\u5c31\u662f\u5047\u8bbe\u67d0\u4e00\u6b21\u8bf7\u6c42A\u5904\u7406\u7684\u5f88\u6162\uff0c\u9884\u8ba120s\u4f46\u662f\u8dd1\u4e8635s\uff0c\u5230\u4e8630s\u7684\u65f6\u5019\u9501\u8fc7\u671f\u4e86\uff0c\u5176\u4ed6\u8bf7\u6c42\u5c31\u81ea\u7136\u8fdb\u6765\u4e86\u3002<\/p>\n
    \u8fd9\u4e0d\u4ec5\u4ec5\u4f1a\u5bfc\u81f4\u4e00\u6b21\u5e76\u884c\uff0c\u5f53\u8bf7\u6c42A\u5904\u7406\u5b8c\u65f6\uff0c\u4f9d\u7136\u4f1a\u6267\u884c\u91ca\u653e\u9501\uff0c\u8fd9\u5b9e\u9645\u4e0a\u662f\u4e0b\u4e00\u4e2a\u7ebf\u7a0b\u4e0a\u7684\u9501\u3002\u4ee5\u6b64\u7c7b\u63a8\uff0c\u6574\u4e2a\u5e76\u53d1\u63a7\u5236\u5c31\u4e71\u4e86\u3002<\/p>\n
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    \u9501\u7eed\u547d<\/h2>\n
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