<\/b> <\/p>\n\u9762\u8bd5Redis\u7684\u6570\u636e\u7c7b\u578b\uff0c\u6211\u7b54\u4e868\u79cd<\/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\u300a\u9762\u8bd5Redis\u7684\u6570\u636e\u7c7b\u578b\uff0c\u6211\u7b54\u4e868\u79cd\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 \u9762\u8bd5\u5b98\uff1a<\/strong>\u5c0f\u660e\u5440\uff0credis \u6709\u51e0\u79cd\u6570\u636e\u7ed3\u6784\u5440\uff1f<\/p>\n \u5c0f\u660e\uff1a<\/strong>8 \u79cd<\/p>\n \u9762\u8bd5\u5b98<\/strong>\uff1a\u90a3\u4f60\u8bf4\u4e00\u4e0b\u5206\u522b\u662f\u4ec0\u4e48\uff1f<\/p>\n \u5c0f\u660e\uff1a<\/strong>raw,int,ht,zipmap,linkedlist,ziplist,intset,skiplist,embstr<\/p>\n \u9762\u8bd5\u5b98\uff1a<\/strong>\u989d\uff0c\u4f60\u5728\u8bf4\u4ec0\u4e48\uff1f<\/p>\n \u5c0f\u660e\uff1a<\/strong>\u5728\u56de\u7b54\u4f60\u7684\u95ee\u9898\u5440\uff0c\u8fd9\u4e2a\u95ee\u9898\u6211\u53ef\u662f\u6709\u8fc7\u7814\u7a76\u7684\uff0c\u4e0d\u4f1a\u9519\u7684<\/p>\n \u9762\u8bd5\u5b98\uff1a<\/strong>\u597d\u5427\uff0c\u4eca\u5929\u7684\u9762\u8bd5\u5148\u5230\u8fd9\u91cc\uff0c\u4f60\u56de\u53bb\u7b49\u901a\u77e5\u5427<\/p>\n \u5c0f\u660e\uff1a<\/strong>…<\/p>\n \u4e0a\u9762\u53d1\u751f\u7684\u5bf9\u8bdd\uff0c\u5230\u5e95\u662f\u9762\u8bd5\u5b98\u6709\u95ee\u9898\uff0c\u8fd8\u662f\u5c0f\u660e\u6709\u95ee\u9898\u5462\uff1f\u5176\u5b9e\u662f\u90fd\u6709\u95ee\u9898\u7684\uff0c\u9762\u8bd5\u5b98\u7684\u63d0\u95ee\u4e0d\u51c6\u786e\uff0c\u5c0f\u660e\u7684\u56de\u7b54\u4e5f\u4e0d\u51c6\u786e\u3002<\/p>\n \u4f46\u53ef\u4ee5\u770b\u51fa\uff0c\u9762\u8bd5\u5b98\u7684\u6c34\u5e73\u4e00\u822c\uff0c\u56e0\u4e3a\u542c\u5230\u8fd9\u4e9b\u540d\u8bcd\u5e76\u4e0d\u77e5\u9053\u5c0f\u660e\u8bf4\u7684\u662f redis \u5e95\u5c42\u7684\u7f16\u7801\u7c7b\u578b\uff0c\u8fdb\u800c\u9519\u5931\u4e86\u6df1\u5165\u6316\u6398\u5c0f\u660e\u6280\u672f\u6f5c\u529b\u7684\u673a\u4f1a\u3002\u800c\u5c0f\u660e\u4e5f\u6709\u4e9b\u81ea\u4f5c\u806a\u660e\uff0c\u5ffd\u7565\u4e86\u9762\u8bd5\u5b98\u60f3\u8003\u5bdf\u7684\u77e5\u8bc6\u70b9\uff0c\u628a\u81ea\u5df1\u6700\u8fd1\u770b\u7684\u4e00\u4e9b\u76ae\u6bdb\u62ff\u51fa\u6765\u79c0\u4e86\u79c0\uff0c\u7ed3\u679c\u5bfc\u81f4\u4e86\u4e00\u573a\u8bef\u4f1a\u3002<\/p>\n \u5c31\u7740\u4e0a\u9762\u8fd9\u4e2a\u5f15\u5b50\uff0c\u6211\u4eec\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u804a\u804a\uff0credis \u4e2d\u7684\u6570\u636e\u7ed3\u6784\u90a3\u4e9b\u4e8b\u3002<\/p>\n redis \u6e90\u7801\u9009\u53d6\u7684\u7248\u672c\uff1a3.0.0<\/strong><\/p>\n \u672c\u7bc7\u6587\u7ae0\u7684\u76ee\u6807<\/strong>\uff1a\u77e5\u9053 redis \u7684\u7f16\u7801\u7c7b\u578b\u8fd9\u4e2a\u6982\u5ff5\uff0c\u5e76\u6309\u7167\u6e90\u7801\u7ea7\u7684\u6df1\u5ea6\u53bb\u7406\u89e3\u4e3a\u4ec0\u4e48\u8981\u8bbe\u7f6e\u4e0d\u540c\u7684\u7f16\u7801\u7c7b\u578b\uff0c\u4f46\u4e0d\u4f1a\u8fc7\u591a\u5c55\u5f00\u5404\u79cd\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u7684\u7ec6\u8282<\/p>\n redis \u7684\u5bf9\u8c61\u7c7b\u578b\u4e0e\u7f16\u7801\u7c7b\u578b<\/strong><\/p>\n redis \u7684\u5bf9\u8c61\u7c7b\u578b\uff0c\u5c31\u662f\u9762\u8bd5\u4e2d\u5e38\u8003\u7684 redis \u6570\u636e\u7c7b\u578b\u6709\u54ea\u4e9b \u8fd9\u4e2a\u95ee\u9898\u6240\u95ee\u7684\u51c6\u786e\u8bf4\u6cd5\uff0c\u8fd9\u4e2a\u5bf9\u4e8e\u6211\u4eec\u8fd9\u4e9b\u53ea\u4f1a\u9762\u8bd5\u4e0d\u4f1a\u5f00\u53d1\u7684\u7a0b\u5e8f\u5458\u6765\u8bf4\uff0c\u7b80\u76f4\u518d\u719f\u6089\u4e0d\u8fc7\u5566\uff0c\u5c31\u662f\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u3001\u6709\u5e8f\u96c6\u5408\uff0c\u8fd9\u4e2a\u5728 redis \u6e90\u7801\u4e2d\u80fd\u627e\u5230\u51c6\u786e\u7684\u5b9a\u4e49\uff1a<\/p>\n redis.c <\/p>\n<\/p>\n \/* Object types *\/ <\/p>\n<\/li>\n #define REDIS_STRING 0 <\/p>\n<\/li>\n #define REDIS_LIST 1 <\/p>\n<\/li>\n #define REDIS_SET 2 <\/p>\n<\/li>\n #define REDIS_ZSET 3 <\/p>\n<\/li>\n #define REDIS_HASH 4 <\/p>\n<\/li>\n<\/ol>\n \u597d\u591a\u4eba\u5bf9 redis \u6570\u636e\u7ed3\u6784\u7684\u7406\u89e3\u53ef\u80fd\u5c31\u6b62\u6b65\u4e8e\u6b64\u4e86\uff0c\u4f46\u5176\u5b9e\u8fd9\u53ea\u662f redis \u5bf9\u5916\u66b4\u9732\u7684\u62bd\u8c61\u7ed3\u6784\uff0c\u5176\u5e95\u5c42\u5b9e\u73b0\u8981\u770b\u5176\u7f16\u7801\u7c7b\u578b\u6765\u51b3\u5b9a\u4f7f\u7528\u8be5\u7f16\u7801\u7c7b\u578b\u5bf9\u5e94\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n \u5982\u679c\u4e00\u4e2a\u5bf9\u8c61\u7c7b\u578b\u53ea\u6709\u4e00\u79cd\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u90a3\u4e48\u8fd9\u4e2a\u7f16\u7801\u7c7b\u578b\u5c31\u5b8c\u5168\u591a\u4f59\u4e86\uff0c\u65e9\u671f\u7684 redis \u7684\u786e\u6ca1\u6709\u8fd9\u4e2a\u6982\u5ff5\u3002\u4f46\u540e\u6765\u4e3a\u4e86\u4f18\u5316\u6027\u80fd\uff0c\u4e00\u79cd\u5bf9\u8c61\u7c7b\u578b\u53ef\u80fd\u5bf9\u5e94\u591a\u79cd\u4e0d\u540c\u7684\u7f16\u7801\u5b9e\u73b0\uff0c\u4e8e\u662f\u4e4e\u5173\u4e8e redis \u5e95\u5c42\u6570\u636e\u7ed3\u6784\u7684\u77e5\u8bc6\u70b9\uff0c\u5c31\u5f00\u59cb\u590d\u6742\u8d77\u6765\u4e86\u3002\u7f16\u7801\u7c7b\u578b\u5728 redis \u6e90\u7801\u4e2d\u4e5f\u6709\u51c6\u786e\u5b9a\u4e49\uff1a<\/p>\n redis.c <\/p>\n<\/p>\n \/* Objects encoding. Some kind of objects like Strings and Hashes can be <\/p>\n<\/li>\n * internally represented in multiple ways. The ‘encoding’ field of the object <\/p>\n<\/li>\n * is set to one of this fields for this object. *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_RAW 0 \/* Raw representation *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_INT 1 \/* Encoded as integer *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_HT 2 \/* Encoded as hash table *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_ZIPMAP 3 \/* Encoded as zipmap *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_LINKEDLIST 4 \/* Encoded as regular linked list *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_ZIPLIST 5 \/* Encoded as ziplist *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_INTSET 6 \/* Encoded as intset *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_SKIPLIST 7 \/* Encoded as skiplist *\/ <\/p>\n<\/li>\n #define REDIS_ENCODING_EMBSTR 8 \/* Embedded sds string encoding *\/ <\/p>\n<\/li>\n<\/ol>\n \u5176\u5b9e\u6211\u4eec\u4e0d\u7528\u5bfb\u627e\u4efb\u4f55\u989d\u5916\u7684\u4e8c\u624b\u8d44\u6599\u6765\u89e3\u91ca\u7f16\u7801\u7c7b\u578b\u7684\u4f5c\u7528\uff0c\u76f4\u63a5\u770b\u6e90\u7801\u4e2d\u7684\u82f1\u6587\u6ce8\u91ca\u5373\u53ef\u3002<\/p>\n \u5bf9\u8c61\u7f16\u7801\uff08\u7f16\u7801\u7c7b\u578b\uff09\uff1a\u6709\u4e9b\u5bf9\u8c61\u7c7b\u578b\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\uff0c\u5176\u5185\u90e8\u5b9e\u73b0\u53ef\u4ee5\u6709\u591a\u79cd\u65b9\u5f0f\uff0c\u4e00\u4e2a redis \u5bf9\u8c61\u7684 encoding \u5b57\u6bb5\u53ef\u4ee5\u8bbe\u7f6e\u4e0b\u9762\u51e0\u4e2a\u503c\u6765\u8868\u793a\u8fd9\u4e2a\u5bf9\u8c61\u7684\u5e95\u5c42\u7f16\u7801\u7c7b\u578b<\/p>\n \u540c\u4e00\u4e2a\u5bf9\u8c61\u7c7b\u578b\uff0c\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u7f16\u7801\u7c7b\u578b\u4f5c\u4e3a\u5e95\u5c42\u5b9e\u73b0\u3002\u800c\u540c\u4e00\u79cd\u7f16\u7801\u7c7b\u578b\uff0c\u4e5f\u53ef\u4ee5\u652f\u6301\u4e0a\u5c42\u7684\u591a\u79cd\u5bf9\u8c61\u7c7b\u578b\u3002\u4ed6\u4eec\u7684\u5173\u7cfb\u5982\u4e0b:<\/p>\n<\/p>\n redis\u5bf9\u8c61\u7c7b\u578b\u4e0e\u7f16\u7801\u7c7b\u578b<\/p>\n \u8bfb\u5230\u8fd9\u91cc\u4f60\u4e00\u5b9a\u6709\u81f3\u5c11\u4e09\u4e2a\u7591\u95ee\uff1a<\/p>\n \u4e3a\u4ec0\u4e48\u4e00\u79cd\u5bf9\u8c61\u7c7b\u578b\u8981\u5bf9\u5e94\u591a\u79cd\u7f16\u7801\u7c7b\u578b\uff0c\u662f\u4e3a\u4e86\u89e3\u51b3\u4ec0\u95ee\u9898\uff1f<\/p>\n<\/li>\n redis \u600e\u4e48\u77e5\u9053\u4ec0\u4e48\u65f6\u5019\u8be5\u7528\u8fd9\u79cd\u7f16\u7801\u7c7b\u578b\uff0c\u4ec0\u4e48\u65f6\u5019\u8be5\u7528\u90a3\u79cd\u7f16\u7801\u7c7b\u578b\u5462\uff0c\u5e76\u4e14\u7f16\u7801\u7c7b\u578b\u53ef\u4ee5\u968f\u65f6\u6539\u53d8\u4e48\uff1f<\/p>\n<\/li>\n \u5404\u79cd\u7f16\u7801\u7c7b\u578b\u7684\u5b9e\u73b0\u539f\u7406\u662f\u4ec0\u4e48\uff1f\uff08\u672c\u7ae0\u4e0d\u505a\u91cd\u70b9\uff0c\u4f1a\u8d2f\u7a7f\u5168\u6587\u4ecb\u7ecd\u4e00\u4e9b\u57fa\u672c\u601d\u60f3\uff0c\u5177\u4f53\u7684\u5404\u79cd\u5b9e\u73b0\u4f1a\u5728\u5176\u4ed6\u7bc7\u7ae0\u4e13\u95e8\u8bb2\u89e3\uff09<\/p>\n<\/li>\n<\/ul>\n \u522b\u6025\uff0c\u8fd9\u4e00\u90e8\u5206\u53ea\u662f\u8ba9\u4f60\u77e5\u9053\uff0credis \u9762\u5bf9\u4f7f\u7528\u8005\u66b4\u9732\u7684\u53ea\u662f\u4e00\u4e2a\u62bd\u8c61\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5e76\u4e0d\u4ee3\u8868\u5176\u5e95\u5c42\u7684\u5177\u4f53\u5b9e\u73b0\u3002\u63a5\u4e0b\u6765\u5e26\u4f60\u6162\u6162\u6df1\u5165\u3002<\/p>\n \u4e3a\u4ec0\u4e48\u4e00\u79cd\u5bf9\u8c61\u7c7b\u578b\u8981\u5bf9\u5e94\u591a\u79cd\u7f16\u7801\u7c7b\u578b<\/strong><\/p>\n \u5199 redis \u7684\u5927\u725b\u4e5f\u662f\u7a0b\u5e8f\u5458\uff0c\u603b\u4e0d\u80fd\u4ed6\u7ed9\u81ea\u5df1\u589e\u52a0\u4e86\u4ee3\u7801\u7684\u590d\u6742\u6027\uff0c\u53c8\u5bf9\u6027\u80fd\u63d0\u5347\u6beb\u65e0\u5e2e\u52a9\u5427\uff1f\u6bd5\u7adf redis \u8fd9\u79cd\u4e2d\u95f4\u7ec4\u4ef6\u5fc5\u987b\u4ee5\u6027\u80fd\u6765\u53d6\u80dc\u540c\u7c7b\u4ea7\u54c1\u3002\u6ca1\u9519\uff0c\u5c31\u662f\u4e3a\u4e86 \u6027\u80fd\u63d0\u5347\u3002<\/p>\n \u76f4\u89c2\u611f\u53d7\u7f16\u7801\u7c7b\u578b\u7684\u4e0d\u540c<\/strong><\/p>\n \u9996\u5148\u6211\u4eec\u6765\u76f4\u89c2\u611f\u53d7\u4e00\u4e0b\u540c\u4e00\u5bf9\u8c61\u5bf9\u5e94\u4e0d\u540c\u7f16\u7801\u7c7b\u578b\u8fd9\u4e00\u573a\u666f\uff0c\u8fd9\u91cc\u7528\u5230\u4e86 object encoding xxx \u8fd9\u4e2a redis \u547d\u4ee4\u6765\u67e5\u770b\u67d0\u4e00\u4e2a key \u5176 value \u5bf9\u8c61\u6240\u4f7f\u7528\u7684\u7f16\u7801\u7c7b\u578b <\/p>\n<\/p>\n 127.0.0.1:6379><\/span> set number 100 <\/p>\n<\/li>\n OK <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> object encoding number <\/p>\n<\/li>\n “int” <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> set number “100” <\/p>\n<\/li>\n OK <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> object encoding number <\/p>\n<\/li>\n “int” <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> set number abc <\/p>\n<\/li>\n OK <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> object encoding number <\/p>\n<\/li>\n “embstr” <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> set number aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa <\/p>\n<\/li>\n OK <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> object encoding number <\/p>\n<\/li>\n “raw” <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> set number 9999999999999999999999999 <\/p>\n<\/li>\n OK <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> object encoding number <\/p>\n<\/li>\n “embstr” <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> set number 99999999999999999999999999999999999999999999999999999999999999 <\/p>\n<\/li>\n OK <\/p>\n<\/li>\n 127.0.0.1:6379><\/span> object encoding number <\/p>\n<\/li>\n “raw” <\/p>\n<\/li>\n<\/ol>\n \u6211\u4eec\u7528\u6211\u4eec\u6700\u5e38\u4f7f\u7528\u7684\u5b57\u7b26\u4e32\u505a\u4e86\u6d4b\u8bd5\uff0c\u89c2\u5bdf\u5230\u5176\u7f16\u7801\u7c7b\u578b\u968f\u7740\u6211\u8bbe\u7f6e\u7684 value \u503c\u4e0d\u540c\u800c\u6539\u53d8\uff0c\u6211\u6574\u7406\u4e86\u5982\u4e0b\u8868\u683c\u6765\u8868\u793a\u4e0a\u9762\u7684\u6d4b\u8bd5\u7ed3\u679c<\/p>\n \u5f53\u7136\uff0c\u6211\u662f\u56e0\u4e3a\u77e5\u9053\u5b57\u7b26\u4e32\u7684\u7f16\u7801\u7c7b\u578b\u7684\u6761\u4ef6\uff0c\u8e29\u4e13\u95e8\u9009\u53d6\u4e86\u8fd9\u4e9b\u6709\u4ee3\u8868\u6027\u7684\u503c\u8fdb\u884c\u6d4b\u8bd5\uff0c\u6211\u4eec\u53ef\u4ee5\u603b\u7ed3\u51fa\u4e00\u4e2a\u89c4\u5f8b<\/p>\n \u4e0d\u8bba\u662f 100 \u8fd8\u662f “100”\uff0c\u7f16\u7801\u7c7b\u578b\u90fd\u662f int\uff0c\u8bf4\u660e redis \u5728\u5224\u65ad\u662f\u5426\u53ef\u4ee5\u7528\u6574\u6570\u8fd9\u4e2a\u7f16\u7801\u7c7b\u578b\u8868\u793a\u5bf9\u8c61\u7684\u65f6\u5019\uff0c\u5c31\u53ea\u662f\u770b\u8fd9\u4e2a\u503c\u662f\u5426\u80fd\u8f6c\u6362\u6210\u4e00\u4e2a\u6574\u6570<\/p>\n<\/li>\n \u6bd4\u8f83\u77ed\u7684\u5b57\u7b26\u4e32 abc \u88ab\u7f16\u7801\u4e3a embstr\uff0c\u6bd4\u8f83\u957f\u7684\u5b57\u7b26\u4e32 aaaaaaa..a \u88ab\u7f16\u7801\u4e3a raw\uff0c\u8bf4\u660e\u957f\u77ed\u5b57\u7b26\u4e32\u7684\u7f16\u7801\u7c7b\u578b\u4e0d\u4e00\u6837\uff0c\u7531\u6b64\u53ef\u4ee5\u731c\u6d4b redis \u53ef\u80fd\u662f\u5bf9\u77ed\u7684\u5b57\u7b26\u4e32\u8fdb\u884c\u4e86\u5b58\u50a8\u4e0a\u7684\u4f18\u5316\u7b56\u7565\uff08\u5f53\u7136\u76ee\u524d\u53ea\u662f\u5408\u7406\u731c\u6d4b\uff0c\u8fd8\u6709\u53ef\u80fd\u662f\u5bf9\u957f\u5b57\u7b26\u4e32\u8fdb\u884c\u4e86\u67d0\u79cd\u4f18\u5316\uff09<\/p>\n<\/li>\n \u6574\u6570 999…9 \u548c\u66f4\u957f\u7684\u6574\u6570 9999999…9 \u4e5f\u90fd\u88ab\u8f6c\u6362\u6210\u4e86\u76f8\u5e94\u7684\u8868\u793a\u5b57\u7b26\u4e32\u7684\u7c7b\u578b\uff0c\u8bf4\u660e\u53ef\u4ee5\u7528\u6574\u6570\u7f16\u7801\u7c7b\u578b\u8868\u793a\u7684\u503c\uff0c\u662f\u6709\u4e00\u5b9a\u5927\u5c0f\u9650\u5236\u7684<\/p>\n<\/li>\n<\/ul>\n redis \u5bf9\u5b57\u7b26\u4e32\u7f16\u7801\u7c7b\u578b\u7684\u4f18\u5316\u6d45\u6790<\/strong><\/p>\n \u4e0a\u9762\u7684\u5b9e\u9a8c\u6211\u4eec\u4e86\u89e3\u5230\uff0c\u5b57\u7b26\u4e32\u5bf9\u8c61\u7684\u7f16\u7801\u7c7b\u578b\u786e\u5b9e\u6709\u4e09\u79cd\uff1aint\uff0craw\uff0cembstr\u3002<\/p>\n int \u7c7b\u578b\u5206\u6790\u8d77\u6765\u6ca1\u4ec0\u4e48\u610f\u601d\uff0c\u60f3\u60f3\u5c31\u77e5\u9053\u80af\u5b9a\u662f\u80fd\u7528\u6574\u578b\u5b58\u50a8\u7684\uff0c\u5c3d\u91cf\u7528\u6574\u578b\u5b58\u50a8\uff0c\u4e00\u5b9a\u6bd4\u5b57\u7b26\u4e32\u65b9\u5f0f\u66f4\u8282\u7701\u7a7a\u95f4\u561b\u3002\u4e0b\u9762\u6211\u4eec\u5206\u6790\u4e00\u4e0b\uff0c\u957f\u5b57\u7b26\u4e32\u548c\u77ed\u5b57\u7b26\u4e32\u7684\u7f16\u7801\u7c7b\u578b\u505a\u4e86\u533a\u5206\uff0c\u8fd9\u662f\u4e3a\u4ec0\u4e48\u5462\uff1f<\/p>\n \u4e0d\u53ea\u662f\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u5305\u62ec\u54c8\u5e0c\u3001\u5217\u8868\u8fd9\u4e9b\u5bf9\u8c61\u7c7b\u578b\uff0c\u90fd\u662f\u7528\u4e00\u4e2a\u7edf\u4e00\u7684\u7ed3\u6784\u4f53 redisObject \u6765\u8868\u793a\u7684\u3002\u4ed6\u7684\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n redis.h <\/p>\n<\/p>\n typedef struct redisObject { <\/p>\n<\/li>\n unsigned type:4; \/\/ \u5bf9\u8c61\u7c7b\u578b <\/p>\n<\/li>\n unsigned encoding:4; \/\/ \u7f16\u7801\u7c7b\u578b <\/p>\n<\/li>\n void *ptr; \/\/ \u503c\u7684\u6307\u9488 <\/p>\n<\/li>\n …\uff08\u7701\u7565\u4e00\u4e9b\u4e0d\u91cd\u8981\u7684\u5b57\u6bb5\uff09 <\/p>\n<\/li>\n } robj; <\/p>\n<\/li>\n<\/ol>\n \u5360\u4e86 4 \u4f4d\u7684 type \u8868\u793a \u5bf9\u8c61\u7c7b\u578b\uff085 \u79cd\u90a3\u4e2a\uff09\uff0c\u540c\u6837\u5360\u4e86 4 \u4f4d\u7684 encoding \u5b57\u6bb5\u8868\u793a \u7f16\u7801\u7c7b\u578b\uff088 \u79cd\u90a3\u4e2a\uff09\uff0c\u6307\u9488\u5b57\u6bb5 ptr \u8868\u793a\u5b9e\u9645\u503c\u7684 \u5185\u5b58\u5730\u5740\u3002<\/p>\n \u5982\u679c\u8be5\u5bf9\u8c61\u7684\u7f16\u7801\u7c7b\u578b\u4e3a\u6574\u6570\uff08encoding=REDIS_ENCODING_INT\uff09\uff0c\u90a3\u4e48\u8fd9\u4e2a ptr \u6307\u5411\u7684\u5c06\u4f1a\u662f\u4e00\u4e2a long \u7c7b\u578b\u7684\u53d8\u91cf\u3002<\/p>\n util.c <\/p>\n<\/p>\n if (!string2ll(s,slen,&llval)) <\/p>\n<\/li>\n return 0; <\/p>\n<\/li>\n … <\/p>\n<\/li>\n *lval<\/span> = (long)llval; <\/p>\n<\/li>\n return 1; <\/p>\n<\/li>\n<\/ol>\n object.c <\/p>\n<\/p>\n … <\/p>\n<\/li>\n o-><\/span>ptr<\/span> = (void*) value; <\/p>\n<\/li>\n<\/ol>\n \u5982\u679c\u8be5\u5bf9\u8c61\u7684\u7f16\u7801\u7c7b\u578b\u4e3a raw \u6216\u8005 embstr\uff0c\u90a3\u4e48\u8fd9\u4e2a ptr \u6307\u5411\u7684\u5c06\u4f1a\u662f\u4e00\u4e2a sdshdr \u7ed3\u6784\u7684\u53d8\u91cf<\/p>\n sds.h <\/p>\n<\/p>\n struct sdshdr { <\/p>\n<\/li>\n unsigned int len; \/\/ \u5b57\u7b26\u4e32\u957f\u5ea6 <\/p>\n<\/li>\n unsigned int free; \/\/ buf\u7a7a\u95f2\u6570 <\/p>\n<\/li>\n char buf[]; \/\/ \u5b57\u7b26\u6570\u7ec4 <\/p>\n<\/li>\n }; <\/p>\n<\/li>\n<\/ol>\n \u65e2\u7136\u90fd\u662f\u6307\u5411\u540c\u4e00\u4e2a\u7ed3\u6784\uff0c\u90a3\u662f\u600e\u4e48\u4f18\u5316\u7684\u5462\uff1f\u90a3\u5c31\u5f97\u8fdb\u5165\u5982\u4e0b\u4e24\u4e2a\u65b9\u6cd5\u5177\u4f53\u770b\u770b\u4e86<\/p>\n object.c <\/p>\n<\/p>\n robj *createStringObject(char *ptr, size_t len) { <\/p>\n<\/li>\n if (len = 39) <\/span><\/p>\n<\/li>\n return createEmbeddedStringObject(ptr,len); <\/p>\n<\/li>\n else <\/p>\n<\/li>\n return createRawStringObject(ptr,len); <\/p>\n<\/li>\n } <\/p>\n<\/li>\n<\/ol>\n \u4f60\u770b\uff0c\u8fd9\u6bb5\u4ee3\u7801\u975e\u5e38\u6e05\u6670\uff0c\u5b57\u7b26\u4e32\u957f\u5ea6 <\/p>\n embstr \u7c7b\u578b <\/p>\n<\/p>\n robj *createEmbeddedStringObject(char *ptr, size_t len) { <\/p>\n<\/li>\n robj *o<\/span> = zmalloc<\/span>(sizeof(robj)+sizeof(struct sdshdr)+len+1); <\/p>\n<\/li>\n struct sdshdr *sh<\/span> = (void*)(o+1); <\/p>\n<\/li>\n o-><\/span>type<\/span> = REDIS_STRING<\/span>; <\/p>\n<\/li>\n o-><\/span>encoding<\/span> = REDIS_ENCODING_EMBSTR<\/span>; <\/p>\n<\/li>\n o-><\/span>ptr<\/span> = sh<\/span>+1; <\/p>\n<\/li>\n … \uff08\u4e00\u4e9b\u8d4b\u503c\u64cd\u4f5c\uff09 <\/p>\n<\/li>\n return o; <\/p>\n<\/li>\n } <\/p>\n<\/li>\n<\/ol>\n raw \u7c7b\u578b <\/p>\n<\/p>\n robj *createRawStringObject(char *ptr, size_t len) { <\/p>\n<\/li>\n return createObject(REDIS_STRING,sdsnewlen(ptr,len)); <\/p>\n<\/li>\n } <\/p>\n<\/li>\n sds sdsnewlen(const void *init, size_t initlen) { <\/p>\n<\/li>\n … <\/p>\n<\/li>\n struct sdshdr *sh<\/span> = zmalloc<\/span>(sizeof(struct sdshdr)+initlen+1); <\/p>\n<\/li>\n … <\/p>\n<\/li>\n } <\/p>\n<\/li>\n robj *createObject(int type, void *ptr) { <\/p>\n<\/li>\n robj *o<\/span> = zmalloc<\/span>(sizeof(*o)); <\/p>\n<\/li>\n o-><\/span>type<\/span>type<\/span> = type; <\/p>\n<\/li>\n o-><\/span>encoding<\/span> = REDIS_ENCODING_RAW<\/span>; <\/p>\n<\/li>\n o-><\/span>ptr<\/span>ptr<\/span> = ptr; <\/p>\n<\/li>\n …\uff08\u4e00\u4e9b\u8d4b\u503c\u64cd\u4f5c\uff09 <\/p>\n<\/li>\n return o; <\/p>\n<\/li>\n } <\/p>\n<\/li>\n<\/ol>\n \u5bf9\u4e8e\u9605\u8bfb\u6e90\u7801\u6bd4\u8f83\u591a\u7684\u540c\u5b66\uff0c\u53ef\u80fd\u7acb\u523b\u5c31\u5bdf\u89c9\u5230\u4e86\u4ed6\u4eec\u7684\u533a\u522b\u3002\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u5c31\u662f raw \u7c7b\u578b\u8fd9\u79cd\u65b9\u5f0f\uff0c\u4e3a redisObject \u548c sdshdr \u7ed3\u6784\u5206\u522b\u7533\u8bf7\u4e86\u5185\u5b58\u7a7a\u95f4\uff0c\u800c embstr \u53ea\u7533\u8bf7\u4e86\u4e00\u6b21\u5185\u5b58\u7a7a\u95f4\uff0c\u7136\u540e\u5c06\u8fd9\u4e24\u4e2a\u7ed3\u6784\u7d27\u6328\u7740\u653e\u3002\u9664\u6b64\u4e4b\u5916\u6ca1\u6709\u5176\u4ed6\u4efb\u4f55\u533a\u522b\u4e86\u3002\u76f4\u89c2\u56fe\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<\/p>\n \u770b\u5230\u8fd9\uff0c\u4e00\u5207\u5c31\u90fd\u89e3\u91ca\u901a\u4e86\uff0c\u975e\u5e38\u7b80\u5355\uff0c\u5c31\u53ea\u662f\u7533\u8bf7\u5185\u5b58\u8fd9\u4e00\u6b65\u7684\u533a\u522b\u800c\u5df2\u3002\u4f46\u5bf9\u4e8e\u6211\u4eec\u8fd9\u4e9b\u4ec0\u4e48\u7b80\u5355\u7684\u4e8b\u60c5\u90fd\u8981\u5305\u88c5\u6210\u9ad8\u7aef\u5927\u6c14\u8bdd\u672f\u7684\u7a0b\u5e8f\u5458\u6765\u8bf4\uff0c\u8fd8\u662f\u8981\u60f3\u529e\u6cd5\u88c5\u4e00\u4e0b\uff0c\u6211\u4eec\u603b\u7ed3\u51fa\u4f7f\u7528 embstr \u7f16\u7801\u76f8\u6bd4\u4e8e raw \u7f16\u7801\u7684\u597d\u5904\uff1a<\/p>\n embstr \u53ea\u7533\u8bf7\u4e86\u4e00\u6b21\u5185\u5b58\uff0c\u800c raw \u9700\u8981\u7533\u8bf7\u4e24\u6b21\uff0c\u56e0\u6b64\u8282\u7ea6\u4e86\u4e00\u6b21\u7533\u8bf7\u5185\u5b58\u7684\u6d88\u8017<\/p>\n<\/li>\n \u91ca\u653e embstr \u53ea\u9700\u8981\u91ca\u653e\u4e00\u6b21\u5185\u5b58\uff0c\u800c raw \u9700\u8981\u4e24\u6b21\uff0c\u56e0\u6b64\u8282\u7ea6\u4e86\u4e00\u6b21\u91ca\u653e\u5185\u5b58\u7684\u6d88\u8017<\/p>\n<\/li>\n embstr \u7684 redisObject \u548c sdshdr \u653e\u5728\u4e00\u5757\u8fde\u7eed\u7684\u5185\u5b58\u91cc\uff0c\u56e0\u6b64\u66f4\u80fd\u5229\u7528 \u7f13\u5b58 \u5e26\u6765\u7684\u4f18\u52bf<\/p>\n<\/li>\n<\/ul>\n \u600e\u4e48\u6837\uff0c\u6e90\u7801\u7ea7\u7684\u7406\u89e3\uff0c\u52a0\u4e0a\u8ff7\u5012\u9762\u8bd5\u5b98\u7684\u603b\u7ed3\u8bdd\u672f\uff0c\u591f\u610f\u601d\u5427\u3002<\/p>\n \u4e0d\u540c\u7f16\u7801\u7c7b\u578b\u7684\u6761\u4ef6<\/strong><\/p>\n \u4e0a\u4e2a\u90e8\u5206\u6211\u4eec\u901a\u8fc7\u5b57\u7b26\u4e32\uff0c\u89c2\u5bdf\u4e86\u4e0d\u540c\u7684\u7f16\u7801\u7c7b\u578b\uff0c\u4e5f\u7406\u89e3\u4e86\u4e3a\u4ec0\u4e48\u8981\u6709\u4e0d\u540c\u7684\u7f16\u7801\u7c7b\u578b\u7684\u5b9e\u73b0\u3002\u63a5\u4e0b\u6765\u6211\u4eec\u603b\u7ed3\u4e0b\u5176\u4ed6\u7684\u5bf9\u8c61\u4e0e\u7f16\u7801\u7c7b\u578b\uff0c\u539f\u7406\u5c31\u4e0d\u6df1\u5165\u6e90\u7801\u5206\u6790\u4e86\uff0c\u548c\u5b57\u7b26\u4e32\u7684\u57fa\u672c\u601d\u60f3\u662f\u4e00\u6837\u7684\u3002<\/p>\n \u5b57\u7b26\u4e32\u7684\u7f16\u7801\u7c7b\u578b<\/strong><\/p>\n int\uff1a8 \u4e2a\u5b57\u8282\u7684\u957f\u6574\u578b<\/p>\n<\/li>\n embstr\uff1a\u5c0f\u4e8e\u7b49\u4e8e 39 \u5b57\u8282\u7684\u5b57\u7b26\u4e32<\/p>\n<\/li>\n raw\uff1a\u5927\u4e8e 39 \u5b57\u8282\u7684\u5b57\u7b26\u4e32<\/p>\n<\/li>\n<\/ul>\n \u54c8\u5e0c\u7684\u7f16\u7801\u7c7b\u578b<\/strong><\/p>\n ziplist\uff1a\u5143\u7d20\u4e2a\u6570\u5c0f\u4e8e 512\uff0c\u4e14\u6240\u6709\u503c\u90fd\u5c0f\u4e8e 64 \u5b57\u8282<\/p>\n<\/li>\n hashtable\uff1a\u9664\u4e0a\u8ff0\u6761\u4ef6\u5916<\/p>\n<\/li>\n<\/ul>\n \u5217\u8868\u7684\u7f16\u7801\u7c7b\u578b<\/strong><\/p>\n ziplist\uff1a\u5143\u7d20\u4e2a\u6570\u5c0f\u4e8e 512\uff0c\u4e14\u6240\u6709\u503c\u90fd\u5c0f\u4e8e 64 \u5b57\u8282<\/p>\n<\/li>\n hashtable\uff1a\u9664\u4e0a\u8ff0\u6761\u4ef6\u5916<\/p>\n<\/li>\n<\/ul>\n \u96c6\u5408\u7684\u7f16\u7801\u7c7b\u578b<\/strong><\/p>\n intset\uff1a\u5143\u7d20\u4e2a\u6570\u5c0f\u4e8e 512\uff0c\u4e14\u6240\u6709\u503c\u90fd\u662f\u6574\u6570<\/p>\n<\/li>\n hashtable\uff1a\u9664\u4e0a\u8ff0\u6761\u4ef6\u5916<\/p>\n<\/li>\n<\/ul>\n \u6709\u5e8f\u96c6\u5408\u7684\u7f16\u7801\u7c7b\u578b<\/strong><\/p>\n ziplist\uff1a\u5143\u7d20\u4e2a\u6570\u5c0f\u4e8e 128\uff0c\u4e14\u6240\u6709\u503c\u90fd\u5c0f\u4e8e 64 \u5b57\u8282<\/p>\n<\/li>\n hashtable\uff1a\u9664\u4e0a\u8ff0\u6761\u4ef6\u5916<\/p>\n<\/li>\n<\/ul>\n \u7531\u4e8e\u4e0d\u5c55\u5f00\u8bb2\u89e3\uff0c\u7eaf\u8bb0\u5fc6\u7684\u4e1c\u897f\u6211\u89c9\u5f97\u7528\u6700\u5e72\u51c0\u7684\u529e\u6cd5\u63cf\u8ff0\u7ed9\u5927\u5bb6\u5373\u53ef\uff0c\u65e0\u591a\u4f59\u90e8\u5206\u3002\u5177\u4f53\u6570\u636e\u7ed3\u6784\u7684\u7ec6\u8282\uff0c\u6211\u4f1a\u7528\u5176\u4ed6\u6587\u7ae0\u6765\u8bb2\u89e3\u3002<\/p>\n \u6b64\u65f6\uff0c\u7ecf\u8fc7\u4e00\u756a\u4fee\u70bc\u7684\u5c0f\u660e\uff0c\u518d\u6b21\u9047\u5230\u4e86\u4e00\u4f4d\u4e13\u4e1a\u7684\u9762\u8bd5\u5b98<\/p>\n \u4e13\u4e1a\u7684\u9762\u8bd5\u5b98\uff1a<\/strong>\u5c0f\u660e\u5440\uff0credis \u6709\u51e0\u79cd\u6570\u636e\u7ed3…<\/p>\n \u8fdb\u5316\u7684\u5c0f\u660e\uff1a<\/strong>\u9762\u8bd5\u5b98\u9762\u8bd5\u5b98\uff0c\u4f60\u8fd9\u4e2a\u95ee\u9898\u5206\u4e24\u79cd\u60c5\u51b5\uff0credis \u7684\u5bf9\u8c61\u7c7b\u578b\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u5e38\u8bf4\u7684\u5bf9\u5916\u66b4\u9732\u7684\u6570\u636e\u7c7b\u578b\uff0c\u6709 5 \u79cd\uff0c\u5206\u522b\u662f…. \u5e95\u5c42\u5bf9\u5e94\u7684\u7f16\u7801\u7c7b\u578b\uff0c\u5728 3.0.0 \u6e90\u7801\u4e2d\u6709 8 \u79cd\uff0c\u5206\u522b\u662f….<\/p>\n \u4e13\u4e1a\u7684\u9762\u8bd5\u5b98\uff1a<\/strong>\u8c01\u8ba9\u4f60\u62a2\u7b54\u4e86\uff1f<\/p>\n \u8fdb\u5316\u7684\u5c0f\u660e<\/strong>\uff1a…<\/p>\n \u4e13\u4e1a\u7684\u9762\u8bd5\u5b98\uff1a<\/strong>\u884c\u4e86\uff0c\u4eca\u5929\u7684\u9762\u8bd5\u5148\u5230\u8fd9\u91cc\uff0c\u4f60\u56de\u53bb\u7b49\u901a\u77e5\u5427<\/p>\n \u8fdb\u5316\u7684\u5c0f\u660e\uff1a<\/strong>… <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u9762\u8bd5Redis\u7684\u6570\u636e\u7c7b\u578b\uff0c\u6211\u7b54\u4e86...<\/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-201476","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201476","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=201476"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201476\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
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\n \nvalue<\/th>\n \u7f16\u7801\u7c7b\u578b<\/th>\n<\/tr>\n<\/thead>\n \n 100<\/td>\n int<\/td>\n<\/tr>\n \n “100”<\/td>\n int<\/td>\n<\/tr>\n \n abc<\/td>\n embstr<\/td>\n<\/tr>\n \n aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\/td>\n raw<\/td>\n<\/tr>\n \n 9999999999999999999999999<\/td>\n embstr<\/td>\n<\/tr>\n \n 99999999999999999999999999999999999999999<\/td>\n raw<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \n
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