{"id":201111,"date":"2025-05-10T09:27:38","date_gmt":"2025-05-10T01:27:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201111\/"},"modified":"2025-05-10T09:27:38","modified_gmt":"2025-05-10T01:27:38","slug":"%e5%9f%ba%e4%ba%8eredis%e5%ae%9e%e7%8e%b0%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%88lua%e8%84%9a%e6%9c%ac%e7%89%88%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201111\/","title":{"rendered":"\u57fa\u4e8eRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u65b9\u6cd5\uff08lua\u811a\u672c\u7248\uff09"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u57fa\u4e8eRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u65b9\u6cd5\uff08lua\u811a\u672c\u7248\uff09<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929golang\u5b66\u4e60\u7f51\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u57fa\u4e8eRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u65b9\u6cd5\uff08lua\u811a\u672c\u7248\uff09\u300b\uff0c\u804a\u804a\u5206\u5e03\u5f0f\u9501\u3001Redislua\u811a\u672c\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<h2>1\u3001\u524d\u8a00<\/h2>\n<blockquote>\n<p>\u5728Java\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u9501\u6765\u907f\u514d\u7531\u4e8e\u7ade\u4e89\u800c\u9020\u6210\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u95ee\u9898\u3002\u901a\u5e38\u6211\u4eec\u4f7f\u7528synchronized \u3001Lock\u6765\u5b9e\u73b0\u3002\u4f46\u662fJava\u4e2d\u7684\u9501\u53ea\u80fd\u4fdd\u8bc1\u5728\u540c\u4e00\u4e2aJVM\u8fdb\u7a0b\u5185\u4e2d\u53ef\u7528\uff0c\u5728\u8de8JVM\u8fdb\u7a0b\uff0c\u4f8b\u5982\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e0a\u5219\u4e0d\u53ef\u9760\u4e86\u3002<\/p>\n<\/blockquote>\n<h2>2\u3001\u5206\u5e03\u5f0f\u9501<\/h2>\n<p>\u5206\u5e03\u5f0f\u9501\uff0c\u662f\u4e00\u79cd\u601d\u60f3\uff0c\u5b83\u7684\u5b9e\u73b0\u65b9\u5f0f\u6709\u5f88\u591a\uff0c\u5982\u57fa\u4e8e\u6570\u636e\u5e93\u5b9e\u73b0\u3001\u57fa\u4e8e\u7f13\u5b58\uff08Redis\u7b49\uff09\u5b9e\u73b0\u3001\u57fa\u4e8eZookeeper\u5b9e\u73b0\u7b49\u7b49\u3002\u4e3a\u4e86\u786e\u4fdd\u5206\u5e03\u5f0f\u9501\u53ef\u7528\uff0c\u6211\u4eec\u81f3\u5c11\u8981\u786e\u4fdd\u9501\u7684\u5b9e\u73b0\u540c\u65f6\u6ee1\u8db3\u4ee5\u4e0b\u56db\u4e2a\u6761\u4ef6<\/p>\n<ul>\n<li>\u4e92\u65a5\u6027\uff1a\u5728\u4efb\u610f\u65f6\u523b\uff0c\u53ea\u6709\u4e00\u4e2a\u5ba2\u6237\u7aef\u80fd\u6301\u6709\u9501\u3002<\/li>\n<li>\u4e0d\u4f1a\u53d1\u751f\u6b7b\u9501\uff1a\u5373\u4f7f\u5ba2\u6237\u7aef\u5728\u6301\u6709\u9501\u7684\u671f\u95f4\u5d29\u6e83\u800c\u6ca1\u6709\u4e3b\u52a8\u89e3\u9501\uff0c\u4e5f\u80fd\u4fdd\u8bc1\u540e\u7eed\u5176\u4ed6\u5ba2\u6237\u7aef\u80fd\u52a0\u9501\u3002<\/li>\n<li>\u5177\u6709\u5bb9\u9519\u6027\uff1a\u53ea\u8981\u5927\u90e8\u5206\u7684Redis\u8282\u70b9\u6b63\u5e38\u8fd0\u884c\uff0c\u5ba2\u6237\u7aef\u5c31\u53ef\u4ee5\u52a0\u9501\u548c\u89e3\u9501\u3002<\/li>\n<li>\u89e3\u94c3\u8fd8\u987b\u7cfb\u94c3\u4eba\uff1a\u52a0\u9501\u548c\u89e3\u9501\u5fc5\u987b\u662f\u540c\u4e00\u4e2a\u5ba2\u6237\u7aef\uff0c\u5ba2\u6237\u7aef\u81ea\u5df1\u4e0d\u80fd\u628a\u522b\u4eba\u52a0\u7684\u9501\u7ed9\u89e3\u4e86\u3002<\/li>\n<\/ul>\n<h2>&nbsp;3\u3001\u57fa\u4e8eRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/h2>\n<blockquote>\n<p>\u4ee5\u4e0b\u4ee3\u7801\u5b9e\u73b0\u4e86\u57fa\u4e8eredis\u4e2d\u95f4\u4ef6\u7684\u5206\u5e03\u5f0f\u9501\u3002\u52a0\u9501\u7684\u8fc7\u7a0b\u4e2d\u4e3a\u4e86\u4fdd\u969csetnx\uff08\u8bbe\u7f6eKEY\uff09\u548cexpire\uff08\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\uff09\u5c3d\u53ef\u80fd\u5728\u4e00\u4e2a\u4e8b\u52a1\u4e2d\uff0c\u4f7f\u7528\u5230\u4e86lua\u811a\u672c\u7684\u65b9\u5f0f\uff0c\u5c06\u9700\u8981\u5b8c\u6210\u7684\u6307\u4ee4\u4e00\u5e76\u63d0\u4ea4\u5230redis\u4e2d\uff1b<\/p>\n<\/blockquote>\n<h3>3.1\u3001RedisConfig.java<\/h3>\n<pre>\npackage com.demo.configuration;\n\nimport org.springframework.context.annotation.Bean;\nimport org.springframework.context.annotation.Configuration;\nimport org.springframework.data.redis.connection.RedisConnectionFactory;\nimport org.springframework.data.redis.core.RedisTemplate;\nimport org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;\nimport org.springframework.data.redis.serializer.StringRedisSerializer;\n\n@Configuration\npublic class RedisConfig {\n\n    @Bean\n    public RedisTemplate\n   \n     redisTemplate(RedisConnectionFactory factory) {\n        RedisTemplate\n    \n      template = new RedisTemplate(); template.setConnectionFactory(factory); \/\/ key\u91c7\u7528String\u7684\u5e8f\u5217\u5316\u65b9\u5f0f template.setKeySerializer(new StringRedisSerializer()); \/\/ value\u5e8f\u5217\u5316\u65b9\u5f0f\u91c7\u7528jackson template.setValueSerializer(new GenericJackson2JsonRedisSerializer()); template.afterPropertiesSet(); return template; } }\n    \n   <\/pre>\n<h3>3.2\u3001RedisLockController.java<\/h3>\n<pre>\npackage com.demo.controller;\n\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.core.io.ClassPathResource;\nimport org.springframework.data.redis.core.RedisTemplate;\nimport org.springframework.data.redis.core.script.DefaultRedisScript;\nimport org.springframework.scripting.support.ResourceScriptSource;\nimport org.springframework.web.bind.annotation.PathVariable;\nimport org.springframework.web.bind.annotation.RequestMapping;\nimport org.springframework.web.bind.annotation.RestController;\n\nimport java.util.Arrays;\n\n@RestController\n@RequestMapping(\"\/redis\")\npublic class RedisLockController {\n\n    @Autowired\n    private RedisTemplate\n   \n     redisTemplate;\n\n    @RequestMapping(value = \"\/lock\/{key}\/{uid}\/{expire}\")\n    public Long lock(@PathVariable(\"key\") String key, @PathVariable(\"uid\") String uid, @PathVariable(\"expire\") Integer expire) {\n        Long result = null;\n        try {\n            \/\/\u8c03\u7528lua\u811a\u672c\u5e76\u6267\u884c\n            DefaultRedisScript\n    \n      redisScript = new DefaultRedisScript(); redisScript.setResultType(Long.class);\/\/\u8fd4\u56de\u7c7b\u578b\u662fLong \/\/lua\u6587\u4ef6\u5b58\u653e\u5728resources\u76ee\u5f55\u4e0b\u7684redis\u6587\u4ef6\u5939\u5185 redisScript.setScriptSource(new ResourceScriptSource(new ClassPathResource(\"redis\/redis_lock.lua\"))); result = redisTemplate.execute(redisScript, Arrays.asList(key), uid, expire); System.out.println(\"lock==\" + result); } catch (Exception e) { e.printStackTrace(); } return result; } @RequestMapping(value = \"\/unlock\/{key}\/{uid}\") public Long unlock(@PathVariable(\"key\") String key, @PathVariable(\"uid\") String uid) { Long result = null; try { \/\/\u8c03\u7528lua\u811a\u672c\u5e76\u6267\u884c DefaultRedisScript\n     \n       redisScript = new DefaultRedisScript(); redisScript.setResultType(Long.class);\/\/\u8fd4\u56de\u7c7b\u578b\u662fLong \/\/lua\u6587\u4ef6\u5b58\u653e\u5728resources\u76ee\u5f55\u4e0b\u7684redis\u6587\u4ef6\u5939\u5185 redisScript.setScriptSource(new ResourceScriptSource(new ClassPathResource(\"redis\/redis_unlock.lua\"))); result = redisTemplate.execute(redisScript, Arrays.asList(key), uid); System.out.println(\"unlock==\" + result); } catch (Exception e) { e.printStackTrace(); } return result; } }\n     \n    \n   <\/pre>\n<h3>3.3\u3001redis_lock.lua<\/h3>\n<pre>\nif redis.call('setnx',KEYS[1],ARGV[1]) == 1 then\n    return redis.call('expire',KEYS[1],ARGV[2])\nelse\n    return 0\nend<\/pre>\n<h3>3.4\u3001redis_unlock.lua<\/h3>\n<pre>\nif redis.call(\"exists\",KEYS[1]) == 0 then\n    return 1\nend\n\nif redis.call('get',KEYS[1]) == ARGV[1] then\n    return redis.call('del',KEYS[1])\nelse\n    return 0\nend<\/pre>\n<h2>4\u3001\u6d4b\u8bd5\u6548\u679c<\/h2>\n<blockquote>\n<p>key123\u4e3akey\uff0cthread12345\u4e3avalue\u6807\u8bc6\u9501\u7684\u4e3b\u4eba\uff0c300\u4e3a\u8be5\u9501\u7684\u8d85\u65f6\u65f6\u95f4<\/p>\n<\/blockquote>\n<p>\u52a0\u9501\uff1a\u9501\u4e3b\u4eba\u4e3athread12345<br \/> http:\/\/127.0.0.1:8080\/redis\/lock\/key123\/thread12345\/300<\/p>\n<p>\u89e3\u9501\uff1a\u89e3\u9501\u4eba\u4e3athread123456<br \/> http:\/\/127.0.0.1:8080\/redis\/unlock\/key123\/thread123456<\/p>\n<p>\u89e3\u9501\uff1a\u89e3\u9501\u4eba\u4e3athread12345<br \/> http:\/\/127.0.0.1:8080\/redis\/unlock\/key123\/thread12345<\/p>\n<h3>4.1\u3001\u52a0\u9501\uff0c\u5176\u4ed6\u4eba\u89e3\u9501<\/h3>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20221229\/167232060663ad965ead1c7.png\" class=\"aligncenter\"><br \/><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20221229\/167232060763ad965f4e602.png\" class=\"aligncenter\"><\/p>\n<blockquote>\n<p>thread12345\u52a0\u7684\u9501\uff0cthread123456\u662f\u89e3\u4e0d\u4e86\u7684\uff0c\u53ea\u6709\u7b49thread12345\u81ea\u5df1\u89e3\u9501\u6216\u8005\u9501\u7684\u8d85\u65f6\u65f6\u95f4\u8fc7\u671f<\/p>\n<\/blockquote>\n<h3>4.2\u3001\u52a0\u9501\uff0c\u81ea\u5df1\u89e3\u9501<\/h3>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20221229\/167232060763ad965f9a520.png\" class=\"aligncenter\"><br \/><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20221229\/167232060863ad966023f01.png\" class=\"aligncenter\"><\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20221229\/167232060863ad96608ac71.png\" class=\"aligncenter\"><\/p>\n<blockquote>\n<p>thread12345\u52a0\u7684\u9501\uff0cthread12345\u81ea\u5df1\u968f\u65f6\u53ef\u4ee5\u89e3\u9501\uff0c\u4e5f\u53ef\u4ee5\u7b49\u9501\u7684\u8d85\u65f6\u65f6\u95f4\u8fc7\u671f<\/p>\n<\/blockquote>\n<h2>5\u3001\u603b\u7ed3<\/h2>\n<ul>\n<li>&nbsp;\u4f7f\u7528Redis\u9501\uff0c\u4f1a\u6709\u4e1a\u52a1\u672a\u6267\u884c\u5b8c\uff0c\u9501\u8fc7\u671f\u7684\u95ee\u9898\uff0c\u4e5f\u5c31\u662f\u9501\u4e0d\u5177\u6709\u53ef\u91cd\u5165\u6027\u7684\u7279\u70b9\u3002<\/li>\n<li>\u4f7f\u7528Redis\u9501\uff0c\u5728\u5c1d\u8bd5\u83b7\u53d6\u9501\u7684\u65f6\u5019\uff0c\u662f\u975e\u963b\u585e\u7684\uff0c\u4e0d\u6ee1\u8db3\u5728\u4e00\u5b9a\u671f\u9650\u5185\u4e0d\u65ad\u5c1d\u8bd5\u83b7\u53d6\u9501\u7684\u573a\u666f\u3002<\/li>\n<li>\u4ee5\u4e0a\u4e24\u70b9\uff0c\u90fd\u53ef\u4ee5\u91c7\u7528Redisson\u9501\u89e3\u51b3\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u57fa\u4e8eRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u65b9\u6cd5&#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-201111","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201111","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=201111"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201111\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}