{"id":10008189,"date":"2023-08-29T15:01:56","date_gmt":"2023-08-29T07:01:56","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008189"},"modified":"2023-08-29T15:01:56","modified_gmt":"2023-08-29T07:01:56","slug":"redis%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%ef%bc%8csetnxlua%e8%84%9a%e6%9c%ac%e7%9a%84java%e5%ae%9e%e7%8e%b0-%e4%ba%ac%e4%b8%9c%e7%89%a9%e6%b5%81%e6%8a%80%e6%9c%af%e5%9b%a2%e9%98%9f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008189","title":{"rendered":"redis\u5206\u5e03\u5f0f\u9501\uff0csetnx+lua\u811a\u672c\u7684java\u5b9e\u73b0 | \u4eac\u4e1c\u7269\u6d41\u6280\u672f\u56e2\u961f"},"content":{"rendered":"<h2>1 \u524d\u8a00<\/h2>\n<p>\u5728\u73b0\u5728\u5de5\u4f5c\u4e2d\uff0c\u4e3a\u4fdd\u969c\u670d\u52a1\u7684\u9ad8\u53ef\u7528\uff0c\u5e94\u5bf9\u5355\u70b9\u6545\u969c\u3001\u8d1f\u8f7d\u91cf\u8fc7\u5927\u7b49\u5355\u673a\u90e8\u7f72\u5e26\u6765\u7684\u95ee\u9898\uff0c\u751f\u4ea7\u73af\u5883\u5e38\u7528\u591a\u673a\u90e8\u7f72\u3002\u4e3a\u89e3\u51b3\u591a\u673a\u623f\u90e8\u7f72\u5bfc\u81f4\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u95ee\u9898\uff0c\u6211\u4eec\u5e38\u4f1a\u9009\u62e9\u7528\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n<p>\u76ee\u524d\u5176\u4ed6\u6bd4\u8f83\u5e38\u89c1\u7684\u5b9e\u73b0\u65b9\u6848\u6211\u5217\u4e3e\u5728\u4e0b\u9762\uff1a<\/p>\n<ol>\n<li>\u57fa\u4e8e\u7f13\u5b58\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff08\u672c\u6587\u4e3b\u8981\u4f7f\u7528redis\u5b9e\u73b0\uff09<\/li>\n<li>\u57fa\u4e8e\u6570\u636e\u5e93\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/li>\n<li>\u57fa\u4e8ezookeeper\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/li>\n<\/ol>\n<p>\u672c\u6587\u662f\u57fa\u4e8eredis\u7f13\u5b58\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff0c\u5176\u4e2d\u4f7f\u7528\u4e86setnx\u547d\u4ee4\u52a0\u9501\uff0cexpire\u547d\u4ee4\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u5e76lua\u811a\u672c\u4fdd\u8bc1\u4e8b\u52a1\u4e00\u81f4\u6027\u3002Java\u5b9e\u73b0\u90e8\u5206\u57fa\u4e8eJIMDB\u63d0\u4f9b\u7684\u63a5\u53e3\u3002JIMDB\u662f\u4eac\u4e1c\u81ea\u4e3b\u7814\u53d1\u7684\u57fa\u4e8eRedis\u7684\u5206\u5e03\u5f0f\u7f13\u5b58\u4e0e\u9ad8\u901f\u952e\u503c\u5b58\u50a8\u670d\u52a1\u3002<\/p>\n<h2>2 SETNX<\/h2>\n<p>\u57fa\u672c\u8bed\u6cd5\uff1a<code>SETNX KEY VALUE<\/code><\/p>\n<p><strong>SETNX<\/strong> \u662f\u8868\u793a SET ifNot eXists\uff0c \u5373\u547d\u4ee4\u5728\u6307\u5b9a\u7684 key \u4e0d\u5b58\u5728\u65f6\uff0c\u4e3a key \u8bbe\u7f6e\u6307\u5b9a\u7684\u503c\u3002<\/p>\n<p><strong>KEY<\/strong> \u662f\u8868\u793a\u5f85\u8bbe\u7f6e\u7684key\u540d<\/p>\n<p><strong>VALUE<\/strong>\u662f\u8bbe\u7f6ekey\u7684\u5bf9\u5e94\u503c<\/p>\n<p>\u82e5\u8bbe\u7f6e\u6210\u529f\uff0c\u5219\u8fd4\u56de1\uff1b\u82e5\u8bbe\u7f6e\u5931\u8d25\uff08key\u5b58\u5728\uff09\uff0c\u5219\u8fd4\u56de0\u3002<\/p>\n<p>\u7531\u6b64\uff0c\u6211\u4eec\u4f1a\u9009\u62e9\u7528SETNX\u6765\u8fdb\u884c\u5206\u5e03\u5f0f\u9501\u7684\u5b9e\u73b0\uff0c\u5f53Key\u5b58\u5728\u65f6\uff0c\u4f1a\u8fd4\u56de\u52a0\u9501\u5931\u8d25\u7684\u4fe1\u606f\u3002<\/p>\n<p>SET \u4e0e SETNX \u533a\u522b\uff1a<\/p>\n<p>SET \u5982\u679ckey\u5df2\u7ecf\u5b58\u5728\uff0c\u5219\u4f1a\u8986\u76d6\u539f\u503c\uff0c\u4e14\u65e0\u89c6\u7c7b\u578b<\/p>\n<p>SETNX \u5982\u679ckey\u5df2\u7ecf\u5b58\u5728\uff0c\u5219\u4f1a\u8fd4\u56de0\uff0c\u8868\u793a\u8bbe\u7f6ekey\u5931\u8d25<\/p>\n<p>Redis 2.6.12\u7248\u672c\u524d\u540e\u5bf9\u6bd4\uff1a<\/p>\n<p>2.6.12\u7248\u672c\u524d\uff1a\u5206\u5e03\u5f0f\u9501\u5e76\u4e0d\u80fd\u53ea\u7528SETNX\u5b9e\u73b0\uff0c\u9700\u8981\u642d\u914dEXPIRE\u547d\u4ee4\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u5426\u5219\uff0ckey\u5c06\u6c38\u8fdc\u6709\u6548\u3002\u5176\u4e2d\uff0c\u4e3a\u4fdd\u8bc1SETNX\u548cEXPIRE\u5728\u540c\u4e00\u4e2a\u4e8b\u52a1\u91cc\uff0c\u6211\u4eec\u9700\u8981\u501f\u52a9LUA\u811a\u672c\u6765\u5b8c\u6210\u4e8b\u52a1\u5b9e\u73b0\u3002\uff08\u7531\u4e8e\u5728\u5199\u8fd9\u7bc7\u6587\u7ae0\u65f6\uff0cJIMDB\u8fd8\u672a\u652f\u6301**SET key value [EX seconds|PX milliseconds] [NX|XX] [KEEPTTL]**\u8bed\u6cd5\uff0c\u6545\u672c\u6587\u4f9d\u7136\u7528lua\u4e8b\u52a1\uff09<\/p>\n<p>2.6.12\u7248\u672c\u540e\uff1a<strong>SET key value [EX seconds|PX milliseconds] [NX|XX] [KEEPTTL]<\/strong> \u8bed\u6cd5\u7cd6\u53ef\u7528\u4e8e\u5206\u5e03\u5f0f\u9501\u5e76\u652f\u6301\u539f\u5b50\u64cd\u4f5c\uff0c\u65e0\u9700EXPIRE\u547d\u4ee4\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u3002<\/p>\n<h2>3 LUA\u811a\u672c<\/h2>\n<h4>\u4ec0\u4e48\u662fLUA\u811a\u672c\uff1f<\/h4>\n<p>Lua\u662f\u4e00\u79cd\u8f7b\u91cf\u5c0f\u5de7\u7684\u811a\u672c\u8bed\u8a00,\u7528\u6807\u51c6C\u8bed\u8a00\u7f16\u5199\u5e76\u4ee5\u6e90\u4ee3\u7801\u5f62\u5f0f\u5f00\u653e,\u5176\u8bbe\u8ba1\u76ee\u7684\u662f\u4e3a\u4e86\u5d4c\u5165\u5e94\u7528\u7a0b\u5e8f\u79cd,\u4ece\u800c\u4e3a\u7a0b\u5e8f\u63d0\u4f9b\u7075\u6d3b\u7684\u6269\u5c55\u548c\u5b9a\u5236\u529f\u80fd\u3002<\/p>\n<h4>\u4e3a\u4ec0\u4e48\u9700\u8981\u7528\u5230LUA\u811a\u672c\uff1f<\/h4>\n<p>\u672c\u6587\u7684\u9501\u5b9e\u73b0\u662f\u57fa\u4e8e\u4e24\u4e2aRedis\u547d\u4ee4 &#8211; <code>SETNX<\/code> \u548c <code>EXPIRE<\/code>\u3002 \u4e3a\u4fdd\u8bc1\u547d\u4ee4\u7684\u539f\u5b50\u6027\uff0c\u6211\u4eec\u5c06\u8fd9\u4e24\u4e2a\u547d\u4ee4\u5199\u5165LUA\u811a\u672c\uff0c\u5e76\u4e0a\u4f20\u81f3Redis\u670d\u52a1\u5668\u3002Redis\u670d\u52a1\u5668\u4f1a\u5355\u7ebf\u7a0b\u6267\u884cLUA\u811a\u672c\uff0c\u4ee5\u786e\u4fdd\u4e24\u4e2a\u547d\u4ee4\u5728\u6267\u884c\u671f\u95f4\u4e0d\u88ab\u5176\u4ed6\u8bf7\u6c42\u6253\u65ad\u3002<\/p>\n<h4>LUA\u811a\u672c\u7684\u4f18\u52bf<\/h4>\n<ul>\n<li>\u51cf\u5c11\u7f51\u7edc\u5f00\u9500\u3002\u82e5\u5e72\u547d\u4ee4\u7684\u591a\u6b21\u8bf7\u6c42\uff0c\u53ef\u7ec4\u5408\u6210\u4e00\u4e2a\u811a\u672c\u8fdb\u884c\u4e00\u6b21\u8bf7\u6c42<\/li>\n<li>\u9ad8\u590d\u7528\u6027\u3002\u811a\u672c\u7f16\u8f91\u4e00\u6b21\u540e\uff0c\u76f8\u540c\u4ee3\u7801\u903b\u8f91\u53ef\u591a\u5904\u4f7f\u7528\uff0c\u53ea\u9700\u5c06\u4e0d\u540c\u7684\u53c2\u6570\u4f20\u5165\u5373\u53ef\u3002<\/li>\n<li>\u539f\u5b50\u6027\u3002\u82e5\u671f\u671b\u591a\u4e2a\u547d\u4ee4\u6267\u884c\u671f\u95f4\u4e0d\u88ab\u5176\u4ed6\u8bf7\u6c42\u6253\u65ad\uff0c\u6216\u51fa\u73b0\u7ade\u4e89\u72b6\u6001\uff0c\u53ef\u4ee5\u7528LUA\u811a\u672c\u5b9e\u73b0\uff0c\u540c\u65f6\u4fdd\u8bc1\u4e86\u4e8b\u52a1\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h4>\u5206\u5e03\u5f0f\u9501LUA\u811a\u672c\u7684\u5b9e\u73b0<\/h4>\n<p>\u5047\u8bbe\u5728\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u521b\u5efa\u4e00\u4e2a\u8ba2\u5355\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06<code>orderId<\/code>\u4f5c\u4e3akey\u503c\uff0c<code>uuid<\/code>\u4f5c\u4e3avalue\u503c\u3002\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u4e3a<code>3<\/code>\u79d2\u3002<\/p>\n<p>LUA\u811a\u672c\u5982\u4e0b\uff0c\u901a\u8fc7Redis\u7684eval\/evalsha\u547d\u4ee4\u5b9e\u73b0\uff1a<\/p>\n<pre><code>-- lua\u52a0\u9501\u811a\u672c\n-- KEYS[1],ARGV[1],ARGV[2]\u5206\u522b\u5bf9\u5e94\u4e86orderId\uff0cuuid\uff0c3\n-- \u5982\u679csetnx\u6210\u529f\uff0c\u5219\u7ee7\u7eedexpire\u547d\u4ee4\u903b\u8f91\nif redis.call('setnx',KEYS[1],ARGV[1]) == 1 \n    then \n      -- \u5219\u7ed9\u540c\u4e00\u4e2akey\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\n       redis.call('expire',KEYS[1],ARGV[2]) \n       return 1 \n    else \n      -- \u5982\u679csetnx\u5931\u8d25\uff0c\u5219\u8fd4\u56de0\n       return 0 \nend\n\n\n<\/code><\/pre>\n<pre><code>-- lua\u89e3\u9501\u811a\u672c\n-- KEYS[1],ARGV[1]\u5206\u522b\u5bf9\u5e94\u4e86orderId\uff0cuuid\n-- \u82e5\u65e0\u6cd5\u83b7\u53d6orderId\u7f13\u5b58\uff0c\u5219\u8ba4\u4e3a\u5df2\u7ecf\u89e3\u9501\nif redis.call('get',KEYS[1]) == false \n    then \n        return 1 \n    -- \u82e5\u83b7\u53d6\u5230orderId\uff0c\u5e76value\u503c\u5bf9\u5e94\u4e86uuid\uff0c\u5219\u6267\u884c\u5220\u9664\u547d\u4ee4\n    elseif redis.call('get',KEYS[1]) == ARGV[1] \n    then \n        -- \u5220\u9664\u7f13\u5b58\u4e2d\u7684key\n        return redis.call('del',KEYS[1]) \n    else \n        -- \u82e5\u83b7\u53d6\u5230orderId\uff0c\u4e14value\u503c\u4e0e\u5b58\u5165\u65f6\u4e0d\u4e00\u81f4\uff0c\u5219\u8fd4\u56de\u7279\u6b8a\u503c\uff0c\u65b9\u4fbf\u8fdb\u884c\u540e\u7eed\u903b\u8f91\n        return 2 \nend\n\n\n<\/code><\/pre>\n<p><strong>\u3010\u6ce8\u3011<\/strong>\u6839\u636eRedis\u7684\u7248\u672c\uff0c\u5728LUA\u811a\u672c\u4e2d\uff0c\u5f53\u4f7f\u7528redis.call(&#8216;get&#8217;,key)\u5224\u5b9a\u7f13\u5b58key\u4e0d\u5b58\u5728\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u5bf9\u6bd4\u503c\u4e3a\u5e03\u5c14\u7c7b\u578b\u7684false\uff0c\u8fd8\u662fnull\u3002<\/p>\n<p>\u6839\u636e <a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=D0FbglR4WPTiN%2BMZlXi5rg%3D%3D.iiaYQRcfjzZMP9wCycOjjR1B09McxYEnoxFSK2Hz%2Bsxy%2B9xlVBdzeXZFOkUpXwqA%2B0suuQvoVNb5MK6ujPtslQ%3D%3D\" rel=\"noopener noreferrer\">\u5b98\u65b9\u6587\u6863<\/a> \uff1aLua Boolean -&gt; <a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=g3ql0X%2FgCgy9mK0KJXck8g%3D%3D.6ESMUpuET72lscIwlrni98KAmUvxT4OQkbuBfax%2BsEc4BEIpN%2BZejaS6wh9mAskePs6T4zXveHx4ATgXiAXFT9ak2HDGgN7ui49EKl6PpQ7nH%2F6EDY8qgYS4OErCnhVK\" rel=\"noopener noreferrer\">RESP3 Boolean reply<\/a> (note that this is a change compared to the RESP2, in which returning a Boolean Lua <code>true<\/code> returned the number 1 to the Redis client, and returning a <code>false<\/code> used to return a <code>null<\/code> .<\/p>\n<p>\u5728RESP3\u4e2d\uff0credis cli\u8fd4\u56de\u7684\u662f\u7a7a\u503c\u65f6\uff0clua\u4f1a\u7528\u5e03\u5c14\u7c7b\u578bfalse\u6765\u4ee3\u66ff\u3002<\/p>\n<h4>RESP3\u7b80\u4ecb<\/h4>\n<p>RESP3\u662fRedis6\u7684\u65b0\u7279\u6027\uff0c\u662fRESP v2\u7684\u65b0\u7248\u672c\u3002\u8be5\u534f\u8bae\u7528\u4e8e\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u8bf7\u6c42\u54cd\u5e94\u901a\u4fe1\u3002\u7531\u4e8e\u8be5\u534f\u8bae\u53ef\u4ee5\u4e0d\u5bf9\u79f0\u7684\u4f7f\u7528\uff0c\u5373\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u4e2a\u7b80\u5355\u7684\u8bf7\u6c42\uff0c\u670d\u52a1\u5668\u53ef\u4ee5\u5c06\u66f4\u590d\u6742\u7684\u5e76\u6269\u5145\u540e\u7684\u76f8\u5173\u4fe1\u606f\u8fd4\u56de\u5230\u5ba2\u6237\u7aef\u3002\u5347\u7ea7\u540e\u7684\u534f\u8bae\uff0c\u5f15\u5165\u4e8613\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u4f7f\u4e4b\u66f4\u9002\u7528\u4e8e\u6570\u636e\u5e93\u7684\u4ea4\u4e92\u573a\u666f\u3002<\/p>\n<h2>4 \u57fa\u4e8eJIMDB\u7684Java\u5206\u5e03\u5f0f\u9501\u5b9e\u73b0<\/h2>\n<h4>\u8c03\u7528\u7c7b\u5b9e\u73b0\u4ee3\u7801<\/h4>\n<pre><code>SoRedisLock soJimLock = null;\ntry{\n    soJimLock = new SoRedisLock(&quot;orderId&quot;, jimClient);\n    if (!soJimLock.lock(3)) {\n        log.error(&quot;\u8ba2\u5355\u521b\u5efa\u52a0\u9501\u5931\u8d25&quot;);\n        throw new BPLException(&quot;\u8ba2\u5355\u521b\u5efa\u52a0\u9501\u5931\u8d25&quot;);\n    }\n} catch(Exception e) {\n    throw e;\n} finally {\n    if (null != soJimLock) {\n        soJimLock.unlock();\n    }\n}\n\n\n<\/code><\/pre>\n<h4>\u5206\u5e03\u5f0f\u9501\u5b9e\u73b0\u7c7b\u4ee3\u7801<\/h4>\n<pre><code>public class SoRedisLock{\n\n    \/** \u52a0\u9501\u6807\u5fd7 *\/\n    public static final String LOCKED = &quot;TRUE&quot;;\n    \/** \u9501\u7684\u5173\u952e\u8bcd *\/\n    private String key;\n    private Cluster jimClient;\n    \n    \/**\n     * lock\u7684\u6784\u9020\u51fd\u6570\n     * \n     * @param key\n     *            key+&quot;_lock&quot; (key\u4f7f\u7528\u552f\u4e00\u7684\u4e1a\u52a1\u5355\u53f7)\n     * @param\n     *\n     *\/\n    public SoRedisLock(String key, Cluster jimClient)\n    {\n        this.key = key + &quot;_LOCK&quot;;\n        this.jimClient = jimClient;\n    }\n    \n    \/**\n     * \u52a0\u9501\n     *\n     * @param expire\n     *            \u9501\u7684\u6301\u7eed\u65f6\u95f4\uff08\u79d2\uff09\uff0c\u8fc7\u671f\u5220\u9664\n     * @return \u6210\u529f\u6216\u5931\u8d25\u6807\u5fd7\n     *\/\n    public boolean lock(int expire)\n    {\n        try\n        {\n            log.info(&quot;\u5206\u5e03\u5f0f\u4e8b\u52a1\u52a0\u9501\uff0ckey\uff1a{}&quot;, this.key);   \n            String lua_scripts = &quot;if redis.call('setnx',KEYS[1],ARGV[1]) == 1 then &quot; +\n                    &quot;redis.call('expire',KEYS[1],ARGV[2]) return 1 else return 0 end&quot;;\n            String sha = jimClient.scriptLoad(lua_scripts);\n            List&lt;String&gt; keys = new ArrayList&lt;&gt;();\n            List&lt;String&gt; values = new ArrayList&lt;&gt;();\n            keys.add(this.key);\n            values.add(LOCKED);\n            values.add(String.valueOf(expire));\n            this.locked = jimClient.evalsha(sha, keys, values, false).equals(1L);\n            return this.locked;\n        } catch (Exception e){\n            throw new RuntimeException(&quot;Locking error&quot;, e);\n        }\n    }\n\n    \/**\n     * \u89e3\u9501 \u65e0\u8bba\u662f\u5426\u52a0\u9501\u6210\u529f\uff0c\u90fd\u9700\u8981\u8c03\u7528unlock \u5efa\u8bae\u653e\u5728finally \u65b9\u6cd5\u5757\u4e2d\n     *\/\n    public void unlock()\n    {\n        if (this.jimClient == null || !this.locked) {\n            return ;\n        }\n        try {\n        String luaScript = &quot;if redis.call('get',KEYS[1]) == false then return 1 &quot; +\n                &quot;elseif redis.call('get',KEYS[1]) == ARGV[1] then &quot; +\n                &quot;return redis.call('del',KEYS[1]) else return 2 end&quot;;\n        String sha = jimClient.scriptLoad(luaScript);\n        if(!jimClient.evalsha(sha, Collections.singletonList(this.key), Collections.singletonList(LOCKED), false).equals(1L)){\n            throw new RuntimeException(&quot;\u89e3\u9501\u5931\u8d25,key:&quot;+this.key);\n        }\n        } catch (Exception e) {\n                log.error(&quot;unLocking error, key:{}&quot;, this.key, e);\n            throw new RuntimeException(&quot;unLocking error, key:&quot;+this.key);\n        }\n    }\n}\n\n\n<\/code><\/pre>\n<p>\u7531\u4e8e\u6211\u4eec\u53ea\u662f\u4f7f\u7528key-value\u505a\u4e00\u4e2a\u52a0\u9501\u52a8\u4f5c\uff0cvalue\u5e76\u65e0\u610f\u4e49\u3002\u6545\uff0c\u672c\u6587key\u5bf9\u5e94\u7684value\u7ed9\u5b9a\u56fa\u5b9a\u503c\u3002Jimdb\u63d0\u4f9b\u4e86\u4e0a\u4f20\u811a\u672c\u7684API\uff0c\u6211\u4eec\u901a\u8fc7scriptLoad()\u65b9\u6cd5\u5c06lua\u811a\u672c\u4e0a\u4f20\u81f3redis\u670d\u52a1\u5668\u4e2d\u3002\u5e76\u5229\u7528evalsha()\u65b9\u6cd5\u6765\u8fdb\u884c\u811a\u672c\u7684\u6267\u884c\u3002evalsha()\u8fd4\u56de\u503c\u5373\u4e3a\u811a\u672c\u4e2d\u7684\u8bbe\u7f6e\u7684return\u7684\u8fd4\u56de\u503c\u3002<\/p>\n<p>\u6211\u4eec\u901a\u8fc7list\u5c06\u53c2\u6570\u4f20\u5165\u811a\u672c\u4e2d\uff0c\u5e76\u5bf9\u5e94\u811a\u672c\u4e2d\u7684\u6807\u8bb0\u4f4d\u3002\u4f8b\u5982\u4e0a\u65b9\u7684\u4ee3\u7801\u4e2d\uff1a<\/p>\n<p>\u201c<code>orderId_LOCK<\/code>\u201d\u5bf9\u5e94\u4e86\u811a\u672c\u4e2d\u7684<code>KEYS[1]<\/code><\/p>\n<p>\u201c<code>TRUE<\/code>\u201d\u5bf9\u5e94\u4e86\u811a\u672c\u4e2d\u7684<code>ARGV[1]<\/code><\/p>\n<p>\u201c<code>3<\/code>\u201d\u5bf9\u5e94\u4e86\u811a\u672c\u4e2d\u7684<code>ARGV[2]<\/code><\/p>\n<p>\u3010\u6ce8\u3011\u82e5\u5728\u4e00\u4e2a\u811a\u672c\u4e2d\u5b58\u5728\u591a\u4e2akey\uff0c\u9700\u8981\u786e\u4fddredis\u4e2d\u7684hashtag\u88ab\u542f\u7528\uff0c\u4ee5\u9632\u5206\u7247\u5bfc\u81f4\u7684key\u4e0d\u5904\u4e8e\u540c\u4e00\u5206\u7247\uff0c\u8fdb\u800c\u51fa\u73b0\u201cOnly support single key or use same hashTag\u201d\u5f02\u5e38\u3002\u5f53\u7136\uff0chashtag\u542f\u7528\u9700\u8981\u8c28\u614e\uff0c\u5426\u5219\u5206\u7247\u4e0d\u5747\u5bfc\u81f4\u6d41\u91cf\u7684\u96c6\u4e2d\uff0c\u9020\u6210\u670d\u52a1\u5668\u538b\u529b\u8fc7\u5927\u3002<\/p>\n<h4>\u5b9e\u9645\u4f7f\u7528\u4e2d\u7684\u65e5\u5fd7\u622a\u56fe<\/h4>\n<h3><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/oscimg.oschina.net\/oscnet\/up-b97eb97c653636d8deaa1d27294ec567777.png\" alt=\"\" title=\"\"><\/h3>\n<h2>5 \u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u4ecb\u7ecd\u6211\u4eec\u4e86\u89e3\u5230\u5982\u4f55\u4fdd\u8bc1Redis\u591a\u4e2a\u547d\u4ee4\u7684\u539f\u5b50\u6027\u3002\u5f53\u7136\uff0cRedis\u4e8b\u52a1\u4e00\u81f4\u6027\uff0c\u4e5f\u53ef\u4ee5\u9009\u62e9Redis\u7684\u4e8b\u52a1\uff08Transaction\uff09\u64cd\u4f5c\u6765\u5b9e\u73b0\u3002Jimdb\u4e5f\u6709API\u652f\u6301\u4e8b\u52a1\u7684multi\uff0cdiscard\uff0cexec\uff0cwatch\u548cunwatch\u547d\u4ee4\u3002\u672c\u6587\u4e4b\u6240\u4ee5\u9009\u62e9\u4f7f\u7528LUA\u811a\u672c\u6765\u8fdb\u884c\u5b9e\u73b0\uff0c\u4e3b\u8981\u662f\u8003\u8651\u5230\u76ee\u524dJimdb\u5728\u6267\u884c\u4e8b\u52a1\u65f6\uff0c\u6d41\u91cf\u53ea\u4f1a\u6253\u5230\u4e3b\u5b9e\u4f8b\uff0c\u591a\u5b9e\u4f8b\u7684\u8d1f\u8f7d\u5747\u8861\u4f1a\u5931\u6548\u3002\u66f4\u591a\u7684\u53ef\u884c\u65b9\u6848\u7b49\u5f85\u5927\u5bb6\u7684\u63a2\u7d22\uff0c\u6211\u4eec\u4e0b\u4e2a\u6587\u6863\u89c1\u3002<\/p>\n<h2>6 \u53c2\u8003\u8d44\u6599<\/h2>\n<p>Redis\u5206\u5e03\u5f0f\u9501\uff1a <a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=PUD8LI8ttEksCqAtOndJqw%3D%3D.0lfbdqhAQ8Z2%2FKrgiTdmmp8lo%2BsoAmIAlQJmVLXEzta9b2lOH1y0Mxbt%2BX4kyuai\" rel=\"noopener noreferrer\">https:\/\/www.cnblogs.com\/niceyoo\/p\/13711149.html<\/a><\/p>\n<p>Redis\u4e2d\u4f7f\u7528Lua\u811a\u672c\uff1a<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=4EPm2WylUslaut1IDlIYQA%3D%3D.WvOhltHGZLwvkSd%2BJ3UbFbnGjFFIFroivzyk9NphGAZfvs5gogqUC3imujhmRt6P\" rel=\"noopener noreferrer\">https:\/\/zhuanlan.zhihu.com\/p\/77484377<\/a><\/p>\n<p>Redis Eval\u547d\u4ee4\uff1a <a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=TWsr6TFv5zXNXQdqu8d8Ig%3D%3D.7oapBo0Dk%2FbeddBIK%2F1jhnlRlh6dYeVOZdSpp4XUd5fCmE9ADJTCozEM4DRFGw91\" rel=\"noopener noreferrer\">https:\/\/www.redis.net.cn\/order\/3643.html<\/a><\/p>\n<p>LUA API\uff1a <a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=v9iLdv43qagWNEHkx%2Fg%2B2g%3D%3D.xRp2HEM7VV7DSC4fG6P7SF48GLKAFrLAT%2FbHQ%2BqIqv1RyvaF9qBFReWkBKvwp9OFpbVLt2zCeFVZ9cYZ1u5ZlA%3D%3D\" rel=\"noopener noreferrer\">https:\/\/redis.io\/docs\/interact\/programmability\/lua-api\/<\/a><\/p>\n<blockquote>\n<p>\u4f5c\u8005\uff1a\u4eac\u4e1c\u7269\u6d41\u00a0\u725f\u4f73\u4e49<\/p>\n<p>\u6765\u6e90\uff1a\u4eac\u4e1c\u4e91\u5f00\u53d1\u8005\u793e\u533a \u81ea\u733f\u5176\u8bf4Tech \u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u6e90<\/p>\n<\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000044160364\">https:\/\/segmentfault.com\/a\/1190000044160364<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1 \u524d\u8a00 \u5728\u73b0\u5728\u5de5\u4f5c\u4e2d\uff0c\u4e3a\u4fdd\u969c\u670d\u52a1\u7684\u9ad8\u53ef\u7528\uff0c\u5e94\u5bf9\u5355\u70b9\u6545\u969c\u3001\u8d1f\u8f7d\u91cf\u8fc7\u5927\u7b49\u5355\u673a\u90e8\u7f72\u5e26\u6765\u7684\u95ee\u9898\uff0c\u751f\u4ea7\u73af\u5883\u5e38\u7528\u591a\u673a\u90e8\u7f72 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10008189","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008189"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008189\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}