{"id":201586,"date":"2025-05-10T09:44:14","date_gmt":"2025-05-10T01:44:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201586\/"},"modified":"2025-05-10T09:44:14","modified_gmt":"2025-05-10T01:44:14","slug":"redis%e4%bc%98%e6%83%a0%e5%88%b8%e7%a7%92%e6%9d%80%e8%a7%a3%e5%86%b3%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201586\/","title":{"rendered":"Redis\u4f18\u60e0\u5238\u79d2\u6740\u89e3\u51b3\u65b9\u6848"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>Redis\u4f18\u60e0\u5238\u79d2\u6740\u89e3\u51b3\u65b9\u6848<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587<span style=\"color: #FF6600;font-family:\">\u300aRedis\u4f18\u60e0\u5238\u79d2\u6740\u89e3\u51b3\u65b9\u6848\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<span style=\"color: #FF6600;font-family:\">\u79d2\u6740\u3001Redis\u4f18\u60e0\u5238<\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60<span style=\"color: #FF6600;font-family:\">\u6570\u636e\u5e93<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a<span style=\"color: #FF6600;font-family:\">\u6570\u636e\u5e93<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n<h2>1 \u5b9e\u73b0\u4f18\u60e0\u5238\u79d2\u6740\u529f\u80fd<\/h2>\n<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728860763f9649fa66e2.png\" class=\"aligncenter\"><\/p>\n<p>\u4e0b\u5355\u65f6\u9700\u8981\u5224\u65ad\u4e24\u70b9\uff1a1.\u79d2\u6740\u662f\u5426\u5f00\u59cb\u6216\u8005\u7ed3\u675f2.\u5e93\u5b58\u662f\u5426\u5145\u8db3<\/p>\n<p>\u6240\u4ee5\uff0c\u6211\u4eec\u7684\u4e1a\u52a1\u903b\u8f91\u5982\u4e0b<\/p>\n<p>1. \u901a\u8fc7\u4f18\u60e0\u5238id\u83b7\u53d6\u4f18\u60e0\u5238\u4fe1\u606f<\/p>\n<p>2.\u5224\u65ad\u79d2\u6740\u662f\u5426\u5f00\u59cb\uff0c\u5982\u679c\u672a\u8fd4\u56de\u9519\u8bef\u4fe1\u606f<\/p>\n<p>3.\u5224\u65ad\u79d2\u6740\u662f\u5426\u7ed3\u675f\uff0c\u5982\u679c\u5df2\u7ecf\u7ed3\u675f\u8fd4\u56de\u9519\u8bef\u4fe1\u606f<\/p>\n<p>4.\u5982\u679c\u5728\u79d2\u6740\u65f6\u95f4\u5185\uff0c\u5224\u65ad\u5e93\u5b58\u662f\u5426\u5145\u8db3<\/p>\n<p>5.\u5982\u679c\u5145\u8db3\uff0c\u6263\u51cf\u5e93\u5b58<\/p>\n<p>6.\u521b\u5efa\u8ba2\u5355\u4fe1\u606f\uff0c\u5e76\u4fdd\u5b58\u5230\u4f18\u60e0\u5238\u8ba2\u5355\u8868\u4e2d<\/p>\n<p>6.1 \u4fdd\u5b58\u8ba2\u5355id<\/p>\n<p>6.2\u4fdd\u5b58\u7528\u6237id<\/p>\n<p>6.3\u4fdd\u5b58\u4f18\u60e0\u5238id<\/p>\n<p>7.\u8fd4\u56de\u8ba2\u5355id<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728860863f964a003a2c.png\" class=\"aligncenter\"><\/p>\n<p>\u4ee3\u7801\u5b9e\u73b0\uff1a\uff08Service\u5c42\u5b9e\u73b0\u7c7b\uff09<\/p>\n<pre>package com.hmdp.service.impl;\nimport com.hmdp.dto.Result;\nimport com.hmdp.entity.SeckillVoucher;\nimport com.hmdp.entity.VoucherOrder;\nimport com.hmdp.mapper.VoucherOrderMapper;\nimport com.hmdp.service.ISeckillVoucherService;\nimport com.hmdp.service.IVoucherOrderService;\nimport com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;\nimport com.hmdp.utils.RedisIdWorker;\nimport com.hmdp.utils.UserHolder;\nimport org.springframework.stereotype.Service;\nimport javax.annotation.Resource;\nimport java.time.LocalDateTime;\n\/**\n * <p>\n *  \u670d\u52a1\u5b9e\u73b0\u7c7b\n * <\/p>\n *\n * @author \u864e\u54e5\n * @since 2021-12-22\n *\/\n@Service\npublic class VoucherOrderServiceImpl extends ServiceImpl\n   \n     implements IVoucherOrderService {\n    @Resource\n    private ISeckillVoucherService iSeckillVoucherService;\n    @Resource\n    private RedisIdWorker redisIdWorker;\n    @Override\n    public Result seckillVoucher(Long voucherId) {\n        \/\/1.\u83b7\u53d6\u4f18\u60e0\u5238\u4fe1\u606f\n        SeckillVoucher voucher = iSeckillVoucherService.getById(voucherId);\n        \/\/2.\u5224\u65ad\u662f\u5426\u5df2\u7ecf\u5f00\u59cb\n        if (voucher.getBeginTime().isAfter(LocalDateTime.now())){\n            Result.fail(\"\u79d2\u6740\u5c1a\u672a\u5f00\u59cb!\");\n        }\n        \/\/3.\u5224\u65ad\u662f\u5426\u5df2\u7ecf\u7ed3\u675f\n        if (voucher.getEndTime().isBefore(LocalDateTime.now())){\n            Result.fail(\"\u79d2\u6740\u5df2\u7ecf\u7ed3\u675f\u4e86!\");\n        }\n        \/\/4.\u5224\u65ad\u5e93\u5b58\u662f\u5426\u5145\u8db3\n        if (voucher.getStock() \n\n    <h2>2 \u8d85\u5356\u95ee\u9898\uff08\u91cd\u70b9\uff09<\/h2>\n\n    <p>\u6211\u4eec\u5148\u5c1d\u8bd5\u5728\u9ad8\u5e76\u53d1\u7684\u60c5\u51b5\u4e0b\u8fd0\u884c\u4e0a\u8ff0\u4ee3\u7801\u3002\uff08\u4f7f\u7528jmx\u5de5\u5177\uff09<\/p>\n\n    <p>\u4e0b\u56fe\u662f\u521b\u5efa\u4e86\u4e24\u767e\u4e2a\u7ebf\u7a0b\uff0c\u5728\u4e00\u77ac\u95f4\u53d1\u51fa\u4f18\u60e0\u5238\u8bf7\u6c42<\/p>\n\n    <p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728860863f964a06dceb.png\" class=\"aligncenter\"><\/p>\n\n    <p>\u4f46\u662f\u6211\u4eec\u770b\u805a\u5408\u62a5\u544a\uff0c\u53d1\u73b0\u5f02\u5e38\u503c\u53ea\u670945.5%\uff0c\u6309\u9053\u7406\u6765\u8bf4\u5e94\u8be5\u662f50%\uff08\u56e0\u4e3a\u5e93\u5b58\u6709100\u4e2a\uff0c\u8fd9\u91cc\u53d1\u51fa\u4e86200\u4e2a\u8bf7\u6c42\uff09<\/p>\n\n    <p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728860863f964a0eec11.png\" class=\"aligncenter\"><\/p>\n\n    <p>\u4e00\u770b\u5e93\u5b58\u6570\uff0c\u597d\u5bb6\u4f19\uff0c\u662f-9<\/p>\n\n    <p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728860963f964a174876.png\" class=\"aligncenter\"><\/p>\n\n    <p>\u8ba2\u5355\u4e5f\u662f\u6dfb\u52a0\u4e86109\u4e2a\uff0c\u8fd9\u663e\u7136\u53d1\u751f\u4e86\u8d85\u5356\u7684\u95ee\u9898\u3002<\/p>\n\n    <p>\u90a3\u4e48\uff0c\u4e3a\u4ec0\u4e48\u4f1a\u53d1\u751f\u8fd9\u79cd\u95ee\u9898\u5462\uff1f<\/p>\n\n    <p>\u770b\u56fe\u8bf4\u8bdd\uff1a<\/p>\n\n    <p>\u6309\u7167\u6211\u4eec\u6b63\u5e38\u7684\u6d41\u7a0b\u6765\u8d70\uff0c\u5c31\u662f\u7ebf\u7a0b1\u7ebf\u67e5\u8be2\u5b8c\u5e93\u5b58\uff0c\u7136\u540e\u6263\u51cf\u5e93\u5b58\uff0c\u8fd9\u4e2a\u65f6\u5019\u7ebf\u7a0b2\u518d\u6765\u67e5\u8be2\u5e93\u5b58\uff0c\u6263\u51cf\u5e93\u5b58\uff0c\u8fd9\u6837\u662f\u6ca1\u95ee\u9898\u7684\u3002<\/p>\n\n    <p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728860963f964a1ccceb.png\" class=\"aligncenter\"><\/p>\n\n    <p>\u8d85\u5356\u7684\u95ee\u9898\u5c31\u51fa\u5728\uff0c\u5728\u8ba2\u53551\u67e5\u8be2\u5e93\u5b58\u540e\uff0c\u53d1\u73b0\u662f1\uff0c\u4f46\u8fd8\u6ca1\u53bb\u6263\u51cf\u7684\u65f6\u5019\uff0c\u7ebf\u7a0b2\u4e5f\u6765\u67e5\u8be2\u5e93\u5b58\uff0c\u53d1\u73b0\u4e5f\u662f1\uff0c\u4e5f\u8fdb\u884c\u4e86\u6263\u51cf\uff08\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u4e0b\uff09<\/p>\n\n    <p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728861063f964a246e88.png\" class=\"aligncenter\"><\/p>\n\n    <p>\u8fd9\u5c31\u5bfc\u81f4\u4e86\u8d85\u5356\u7684\u95ee\u9898\u3002<\/p>\n\n    <p>\u5bf9\u4e8e\u8fd9\u79cd\u9ad8\u5e76\u53d1\u7684\u95ee\u9898\uff0c\u6700\u5e38\u89c1\u7684\u89e3\u51b3\u65b9\u6cd5\u5c31\u662f\uff1a\u4e0a\u9501~<\/p>\n\n    <p>\u4f46\u9501\u53c8\u5305\u62ec\u60b2\u89c2\u9501\u548c\u4e50\u89c2\u9501\u3002<\/p>\n\n    <p>\u60b2\u89c2\u9501\u7b80\u5355\u7684\u8bb2\u5c31\u662f\uff1a\u89c9\u5f97\u7ebf\u7a0b\u4e00\u5b9a\u4f1a\u53d1\u751f\uff0c\u7136\u540e\u5728\u64cd\u4f5c\u4e4b\u524d\u6bcf\u4e2a\u4eba\u5148\u62ff\u9501\uff0c\u4f60\u6267\u884c\u5b8c\u540e\uff0c\u5728\u8f6e\u5230\u4e0b\u4e00\u4e2a\u6765\u6267\u884c\uff08\u4e32\u884c\u6267\u884c\uff09<\/p>\n\n    <p>\u4e50\u89c2\u9501 :\u5c31\u662f\u4e50\u89c2\uff08\u8ba4\u4e3a\u7ebf\u7a0b\u5b89\u5168\u4e00\u5b9a\u4e0d\u4f1a\u53d1\u751f\uff09\uff0c\u53ea\u8981\u5728\u6bcf\u6b21\u5bf9\u6570\u636e\u4fee\u6539\u4e4b\u524d\uff0c\u5224\u65ad\u5176\u4ed6\u7ebf\u7a0b\u662f\u5426\u5bf9\u6570\u636e\u8fdb\u884c\u7684\u4fee\u6539\u6765\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168\u3002<\/p>\n\n    <p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728861063f964a2ca014.png\" class=\"aligncenter\"><\/p>\n\n    <p>\u60b2\u89c2\u9501\u8f83\u4e3a\u7b80\u5355\uff0c\u8fd9\u91cc\u5b9e\u73b0\u4e50\u89c2\u9501\u3002<\/p>\n\n    <p>\u4e50\u89c2\u9501\u7684\u5173\u952e\u662f\u5224\u65ad\u4e4b\u524d\u67e5\u8be2\u5f97\u5230\u7684\u6570\u636e\u662f\u5426\u6709\u88ab\u4fee\u6539\u8fc7\uff0c\u5e38\u89c1\u7684\u65b9\u5f0f\u6709\u4e24\u79cd<\/p>\n\n    <p>\u6e29\u99a8\u63d0\u793a\uff1a\u5de6\u8fb9\u8868\u683c\u7684\u6570\u636e\u90fd\u662f\u7ebf\u7a0b1\u6267\u884c\u540e\u7684\u6570\u636e\u54e6~<\/p>\n\n    <h3>1.\u7248\u672c\u53f7\u6cd5<\/h3>\n\n    <p>\u5c31\u662f\u5728\u67e5\u8be2\u5e93\u5b58\u7684\u6b65\u9aa4\u4e0a\u52a0\u4e0a\u4e00\u4e2a\u7248\u672c\u53f7\uff0c\u6bcf\u6b21\u4fee\u6539\u5b8c\u6570\u636e\u540e\u7ed9\u7248\u672c\u53f7\uff0b1\u5e76\u5728\u540e\u9762\u52a0\u4e0awhere\u6761\u4ef6\u5224\u65ad\u7248\u672c\u53f7\u662f\u5426\u548c\u4fee\u6539\u524d\u7684\u4e00\u81f4<\/p>\n\n    <p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728861163f964a32710a.png\" class=\"aligncenter\"><\/p>\n\n    <p>\u8fd9\u6837\u5c31\u53ef\u4ee5\u505a\u5230\u7ebf\u7a0b\u5b89\u5168\u5566~<\/p>\n\n    <h3>2.CAS\u6cd5<\/h3>\n\n    <p>\u8fd9\u4e2a\u5c31\u662f\u4e0d\u7528\u7248\u672c\u53f7\u4e86\uff0c\u76f4\u63a5\u5728\u4fee\u6539\u6570\u636e\u5e93\u540e\u52a0\u4e0awhere\u6761\u4ef6\u5224\u65ad\u5e93\u5b58\u662f\u5426\u662f\u4fee\u6539\u524d\u7684\u5e93\u5b58<\/p>\n\n    <p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230225\/167728861163f964a38a9f1.png\" class=\"aligncenter\"><\/p>\n\n    <p>\u89e3\u51b3\u8d85\u5356\u95ee\u9898\u4ee3\u7801\u5b9e\u73b0\uff1a<\/p>\n\n    <p>\u8bf4\u5230\u5e95\u5c31\u662f\u5728\u6211\u4eec\u6263\u51cf\u5e93\u5b58\u7684\u65f6\u5019\u52a0\u4e0a\u4e00\u4e2awhere\u6761\u4ef6\u5224\u65ad\u5e93\u5b58\u662f\u5426\u5927\u4e8e0<\/p>\n\n    <pre>\/\/5.1\u6263\u51cf\u5e93\u5b58\nboolean success = iSeckillVoucherService.update()\n.setSql(\"stock = stock-1\").eq(\"voucher_id\" , voucherId).gt(\"stock\" ,0)\n.update();<\/pre>\n<pre>package com.hmdp.service.impl;\nimport com.hmdp.dto.Result;\nimport com.hmdp.entity.SeckillVoucher;\nimport com.hmdp.entity.VoucherOrder;\nimport com.hmdp.mapper.VoucherOrderMapper;\nimport com.hmdp.service.ISeckillVoucherService;\nimport com.hmdp.service.IVoucherOrderService;\nimport com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;\nimport com.hmdp.utils.RedisIdWorker;\nimport com.hmdp.utils.UserHolder;\nimport org.springframework.stereotype.Service;\nimport javax.annotation.Resource;\nimport java.time.LocalDateTime;\n\/**\n * <p>\n *  \u670d\u52a1\u5b9e\u73b0\u7c7b\n * <\/p>\n *\/\n@Service\npublic class VoucherOrderServiceImpl extends ServiceImpl\n     \n       implements IVoucherOrderService {\n    @Resource\n    private ISeckillVoucherService iSeckillVoucherService;\n    @Resource\n    private RedisIdWorker redisIdWorker;\n    @Override\n    public Result seckillVoucher(Long voucherId) {\n        \/\/1.\u83b7\u53d6\u4f18\u60e0\u5238\u4fe1\u606f\n        SeckillVoucher voucher = iSeckillVoucherService.getById(voucherId);\n        \/\/2.\u5224\u65ad\u662f\u5426\u5df2\u7ecf\u5f00\u59cb\n        if (voucher.getBeginTime().isAfter(LocalDateTime.now())){\n            Result.fail(\"\u79d2\u6740\u5c1a\u672a\u5f00\u59cb!\");\n        }\n        \/\/3.\u5224\u65ad\u662f\u5426\u5df2\u7ecf\u7ed3\u675f\n        if (voucher.getEndTime().isBefore(LocalDateTime.now())){\n            Result.fail(\"\u79d2\u6740\u5df2\u7ecf\u7ed3\u675f\u4e86!\");\n        }\n        \/\/4.\u5224\u65ad\u5e93\u5b58\u662f\u5426\u5145\u8db3\n        if (voucher.getStock() \n\n      <p>\u8d85\u5356\u95ee\u9898\u89e3\u51b3<\/p>\n\n      \n     <\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Redis\u4f18\u60e0\u5238\u79d2\u6740\u89e3\u51b3\u65b9\u6848 \u6536&#46;&#46;&#46;<\/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-201586","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201586","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=201586"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201586\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}