{"id":201612,"date":"2025-05-10T08:03:53","date_gmt":"2025-05-10T00:03:53","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201612\/"},"modified":"2025-05-10T08:03:53","modified_gmt":"2025-05-10T00:03:53","slug":"redis%e5%8a%a0%e9%94%81%e7%9a%84%e4%b8%89%e7%a7%8d%e6%96%b9%e5%bc%8f%e5%b0%8f%e7%bb%93","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201612\/","title":{"rendered":"redis\u52a0\u9501\u7684\u4e09\u79cd\u65b9\u5f0f\u5c0f\u7ed3"},"content":{"rendered":"

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

redis\u52a0\u9501\u7684\u4e09\u79cd\u65b9\u5f0f\u5c0f\u7ed3<\/h1>\n

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

\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762golang\u5b66\u4e60\u7f51\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300aredis\u52a0\u9501\u7684\u4e09\u79cd\u65b9\u5f0f\u5c0f\u7ed3\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n

redis\u5e38\u89c1\u7684\u52a0\u9501\u547d\u4ee4\u5206\u522b\u662fINCR\u3001SETNX\u3001SET<\/p>\n

1 INCR<\/h2>\n

\u8fd9\u79cd\u9501\u7684\u52a0\u9501\u601d\u8def\u662f\uff1akey\u4e0d\u5b58\u5728\uff0c\u90a3\u4e48key\u7684\u503c\u4f1a\u5148\u88ab\u521d\u59cb\u5316\u4e3a0\uff0c\u7136\u540e\u518d\u6267\u884cINCR\u64cd\u4f5c\u8fdb\u884c\u52a0\u4e00\u3002\u7136\u540e\u5176\u5b83\u7528\u6237\u5728\u6267\u884cINCR\u64cd\u4f5c\u8fdb\u884c\u52a0\u4e00\u65f6\uff0c\u5982\u679c\u8fd4\u56de\u7684\u6570\u503c\u5927\u4e8e1\uff0c\u8bf4\u660e\u8fd9\u4e2akey\u6b63\u5728\u88ab\u9501\u5b9a\u4f7f\u7528\u3002<\/p>\n

1\u3001 \u5ba2\u6237\u7aefA\u8bf7\u6c42\u670d\u52a1\u5668\u83b7\u53d6key\u7684\u503c\u4e3a1\u8868\u793a\u83b7\u53d6\u4e86\u9501
2\u3001 \u5ba2\u6237\u7aefB\u4e5f\u53bb\u8bf7\u6c42\u670d\u52a1\u5668\u83b7\u53d6key\u7684\u503c\u4e3a2\u8868\u793a\u83b7\u53d6\u9501\u5931\u8d25
3\u3001 \u5ba2\u6237\u7aefA\u6267\u884c\u4ee3\u7801\u5b8c\u6210\uff0c\u5220\u9664\u9501
4\u3001 \u5ba2\u6237\u7aefB\u5728\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u540e\u5728\u53bb\u8bf7\u6c42\u7684\u65f6\u5019\u83b7\u53d6key\u7684\u503c\u4e3a1\u8868\u793a\u83b7\u53d6\u9501\u6210\u529f
5\u3001 \u5ba2\u6237\u7aefB\u6267\u884c\u4ee3\u7801\u5b8c\u6210\uff0c\u5220\u9664\u9501<\/p>\n

$redis->incr($key);\n$redis->expire($key, $ttl); \/\/\u8bbe\u7f6e\u751f\u6210\u65f6\u95f4\u4e3a1\u79d2\n<\/pre>\n
\u5177\u4f53\u4f7f\u7528\u547d\u4ee4\uff1a<\/p>\n
127.0.0.1:6379>INCR keyName\n<\/pre>\n
2 SETNX<\/h2>\n
\u8fd9\u79cd\u52a0\u9501\u7684\u601d\u8def\u662f\uff0c\u5982\u679ckey\u4e0d\u5b58\u5728\uff0c\u5c06key\u8bbe\u7f6e\u4e3avalue\uff0c\u5982\u679ckey\u5b58\u5728\uff0c\u5219SETNX\u4e0d\u505a\u4efb\u4f55\u52a8\u4f5c\u3002<\/p>\n
SETNX\u662fSET if Not eXists\u7684\u7f29\u5199\u3002<\/p>\n
1\u3001 \u5ba2\u6237\u7aefA\u8bf7\u6c42\u670d\u52a1\u5668\u8bbe\u7f6ekey\u7684\u503c\uff0c\u5982\u679c\u8bbe\u7f6e\u6210\u529f\u5c31\u8868\u793a\u52a0\u9501\u6210\u529f
2\u3001 \u5ba2\u6237\u7aefB\u4e5f\u53bb\u8bf7\u6c42\u670d\u52a1\u5668\u8bbe\u7f6ekey\u7684\u503c\uff0c\u5982\u679c\u8fd4\u56de\u5931\u8d25\uff0c\u90a3\u4e48\u5c31\u4ee3\u8868\u52a0\u9501\u5931\u8d25
3\u3001 \u5ba2\u6237\u7aefA\u6267\u884c\u4ee3\u7801\u5b8c\u6210\uff0c\u5220\u9664\u9501
4\u3001 \u5ba2\u6237\u7aefB\u5728\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u540e\u5728\u53bb\u8bf7\u6c42\u8bbe\u7f6ekey\u7684\u503c\uff0c\u8bbe\u7f6e\u6210\u529f
5\u3001 \u5ba2\u6237\u7aefB\u6267\u884c\u4ee3\u7801\u5b8c\u6210\uff0c\u5220\u9664\u9501<\/p>\n
$redis->setNX($key, $value);\n$redis->expire($key, $ttl);\n<\/pre>\n
\u5177\u4f53\u4f7f\u7528\u547d\u4ee4\uff1a<\/p>\n
redis> SETNX keyName value\n(integer) 1\n<\/pre>\n
\u8bbe\u7f6e\u6210\u529f\uff0c\u8fd4\u56de1\uff1b\u8bbe\u7f6e\u5931\u8d25\uff0c\u8fd4\u56de0<\/p>\n
3 SET<\/h2>\n
\u4e0a\u9762\u4e24\u79cd\u65b9\u6cd5\u90fd\u6709\u4e00\u4e2a\u95ee\u9898\uff0c\u4f1a\u53d1\u73b0\uff0c\u90fd\u9700\u8981\u8bbe\u7f6e key \u8fc7\u671f\u3002\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8981\u8bbe\u7f6ekey\u8fc7\u671f\u5462\uff1f\u5982\u679c\u8bf7\u6c42\u6267\u884c\u56e0\u4e3a\u67d0\u4e9b\u539f\u56e0\u610f\u5916\u9000\u51fa\u4e86\uff0c\u5bfc\u81f4\u521b\u5efa\u4e86\u9501\u4f46\u662f\u6ca1\u6709\u5220\u9664\u9501\uff0c\u90a3\u4e48\u8fd9\u4e2a\u9501\u5c06\u4e00\u76f4\u5b58\u5728\uff0c\u4ee5\u81f3\u4e8e\u4ee5\u540e\u7f13\u5b58\u518d\u4e5f\u5f97\u4e0d\u5230\u66f4\u65b0\u3002\u4e8e\u662f\u4e4e\u6211\u4eec\u9700\u8981\u7ed9\u9501\u52a0\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\u4ee5\u9632\u4e0d\u6d4b\u3002
\u4f46\u662f\u501f\u52a9 Expire \u6765\u8bbe\u7f6e\u5c31\u4e0d\u662f\u539f\u5b50\u6027\u64cd\u4f5c\u4e86\u3002\u6240\u4ee5\u8fd8\u53ef\u4ee5\u901a\u8fc7\u4e8b\u52a1\u6765\u786e\u4fdd\u539f\u5b50\u6027\uff0c\u4f46\u662f\u8fd8\u662f\u6709\u4e9b\u95ee\u9898\uff0c\u6240\u4ee5\u5b98\u65b9\u5c31\u5f15\u7528\u4e86\u53e6\u5916\u4e00\u4e2a\uff0c\u4f7f\u7528 SET \u547d\u4ee4\u672c\u8eab\u5df2\u7ecf\u4ece\u7248\u672c 2.6.12 \u5f00\u59cb\u5305\u542b\u4e86\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u529f\u80fd\u3002<\/p>\n
1\u3001 \u5ba2\u6237\u7aefA\u8bf7\u6c42\u670d\u52a1\u5668\u8bbe\u7f6ekey\u7684\u503c\uff0c\u5982\u679c\u8bbe\u7f6e\u6210\u529f\u5c31\u8868\u793a\u52a0\u9501\u6210\u529f
2\u3001 \u5ba2\u6237\u7aefB\u4e5f\u53bb\u8bf7\u6c42\u670d\u52a1\u5668\u8bbe\u7f6ekey\u7684\u503c\uff0c\u5982\u679c\u8fd4\u56de\u5931\u8d25\uff0c\u90a3\u4e48\u5c31\u4ee3\u8868\u52a0\u9501\u5931\u8d25
3\u3001 \u5ba2\u6237\u7aefA\u6267\u884c\u4ee3\u7801\u5b8c\u6210\uff0c\u5220\u9664\u9501
4\u3001 \u5ba2\u6237\u7aefB\u5728\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u540e\u5728\u53bb\u8bf7\u6c42\u8bbe\u7f6ekey\u7684\u503c\uff0c\u8bbe\u7f6e\u6210\u529f
5\u3001 \u5ba2\u6237\u7aefB\u6267\u884c\u4ee3\u7801\u5b8c\u6210\uff0c\u5220\u9664\u9501<\/p>\n
$redis->set($key, $value, array('nx', 'ex' => $ttl));  \/\/ex\u8868\u793a\u79d2\n<\/pre>\n
\u5177\u4f53\u4f7f\u7528\uff1a<\/p>\n
redis>set key value NX EX max-lock-time \u5b9e\u73b0\u52a0\u9501\n<\/pre>\n
\u547d\u4ee4\u89e3\u91ca\uff1a<\/p>\n
    \n
  • key\uff1akey\u5c31\u662fredis\u7684key\u503c\u4f5c\u4e3a\u9501\u7684\u6807\u8bc6\uff0cvalue\u5728\u8fd9\u91cc\u4f5c\u4e3a\u5ba2\u6237\u7aef\u7684\u6807\u8bc6\uff0c\u53ea\u6709key-value\u90fd\u6bd4\u914d\u624d\u6709\u5220 \u9664\u9501\u7684\u6743\u5229\u3010\u4fdd\u8bc1\u5b89\u5168\u6027\u3011<\/li>\n
  • max-lock-time\uff1a\u901a\u8fc7max-lock-time\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u4fdd\u8bc1\u4e0d\u4f1a\u51fa\u73b0\u6b7b\u9501\u3010\u907f\u514d\u6b7b\u9501\u3011<\/li>\n
  • NX\uff1a\u53ea\u6709\u8fd9\u4e2akey\u4e0d\u5b58\u624d\u7684\u65f6\u5019\u624d\u4f1a\u8fdb\u884c\u64cd\u4f5c\uff0cif not exists\uff1b<\/li>\n
  • EX\uff1a\u8bbe\u7f6ekey\u7684\u8fc7\u671f\u65f6\u95f4\u4e3a\u79d2\uff0c\u5177\u4f53\u65f6\u95f4\u7531\u7b2c5\u4e2a\u53c2\u6570\u51b3\u5b9a<\/li>\n<\/ul>\n
    \u52a0\u9501\u4ee3\u7801\uff1a <\/p>\n
     Jedis jedis = new Jedis(\"127.0.0.1\", 6379);\n private static final String SUCCESS = \"OK\";\n \/**\n  * \u52a0\u9501\u64cd\u4f5c\n  * @param key \u9501\u6807\u8bc6\n  * @param value \u5ba2\u6237\u7aef\u6807\u8bc6\n  * @param timeOut \u8fc7\u671f\u65f6\u95f4\n  *\/\n  \n public Boolean lock(String key,String value,Long timeOut){\n     String var1 = jedis.set(key,value,\"NX\",\"EX\",timeOut);\n     if(LOCK_SUCCESS.equals(var1)){\n         return true;\n     }\n     return false;\n }<\/pre>\n
    \u89e3\u9501\u4ee3\u7801\uff1a<\/p>\n
     Jedis jedis = new Jedis(\"127.0.0.1\", 6379); \n private static final Long UNLOCK_SUCCESS = 1L;\n \/**\n  * \u89e3\u9501\u64cd\u4f5c\n  * @param key \u9501\u6807\u8bc6\n  * @param value \u5ba2\u6237\u7aef\u6807\u8bc6\n  * @return\n  *\/\n  \n public static Boolean unLock(String key,String value){\n     String luaScript = \"if redis.call(\\\"get\\\",KEYS[1]) == ARGV[1] then return \n     redis.call(\\\"del\\\",KEYS[1]) else  return 0 end\";\n     Object var2 = jedis.eval(luaScript,Collections.singletonList(key), Collections.singletonList(value));\n     if (UNLOCK_SUCCESS == var2) {\n         return true;\n     }\n     return false;\n}<\/pre>\n
    luaScript \u8fd9\u4e2a\u5b57\u7b26\u4e32\u662f\u4e2alua\u811a\u672c\uff0c\u4ee3\u8868\u7684\u610f\u601d\u662f\u5982\u679c\u6839\u636ekey\u62ff\u5230\u7684value\u8ddf\u4f20\u5165\u7684value\u76f8\u540c\u5c31\u6267\u884cdel\uff0c\u5426\u5219\u5c31\u8fd4\u56de0\u3010\u4fdd\u8bc1\u5b89\u5168\u6027\u3011<\/p>\n
    jedis.eval(String,list,list);\u8fd9\u4e2a\u547d\u4ee4\u5c31\u662f\u53bb\u6267\u884clua\u811a\u672c\uff0cKEYS\u7684\u96c6\u5408\u5c31\u662f\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0cARGV\u7684\u96c6\u5408\u5c31\u662f\u7b2c\u4e09\u53c2\u6570\u3010\u4fdd\u8bc1\u89e3\u9501\u7684\u539f\u5b50\u64cd\u4f5c\u3011<\/p>\n
    \u4e0a\u8ff0\u5c31\u5b9e\u73b0\u4e86\u600e\u4e48\u4f7f\u7528redis\u53bb\u6b63\u786e\u7684\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff0c\u4f46\u662f\u6709\u4e2a\u5c0f\u7f3a\u9677\u5c31\u662f\u9501\u8fc7\u671f\u65f6\u95f4\u8981\u8bbe\u7f6e\u4e3a\u591a\u5c11\u5408\u9002\uff0c\u8fd9\u4e2a\u5176\u5b9e\u8fd8\u662f\u9700\u8981\u53bb\u6839\u636e\u4e1a\u52a1\u573a\u666f\u8003\u91cf\u4e00\u4e0b\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    redis\u52a0\u9501\u7684\u4e09\u79cd\u65b9\u5f0f\u5c0f\u7ed3 \u6536...<\/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-201612","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201612","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=201612"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201612\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}