{"id":1160,"date":"2021-03-15T10:57:00","date_gmt":"2021-03-15T02:57:00","guid":{"rendered":"http:\/\/www.rain1024.com\/?p=1160"},"modified":"2023-08-07T20:57:23","modified_gmt":"2023-08-07T12:57:23","slug":"hash%e5%ba%95%e5%b1%82%e5%ad%98%e5%82%a8%e5%8e%9f%e7%90%86%e5%8f%8a%e4%bc%98%e5%8c%96redis%e4%b8%adbig-hash%e7%9a%84%e4%b8%80%e4%ba%9b%e5%bb%ba%e8%ae%ae","status":"publish","type":"post","link":"http:\/\/rain1024.com\/index.php\/2021\/03\/15\/hash%e5%ba%95%e5%b1%82%e5%ad%98%e5%82%a8%e5%8e%9f%e7%90%86%e5%8f%8a%e4%bc%98%e5%8c%96redis%e4%b8%adbig-hash%e7%9a%84%e4%b8%80%e4%ba%9b%e5%bb%ba%e8%ae%ae\/","title":{"rendered":"Hash\u5e95\u5c42\u5b58\u50a8\u539f\u7406\u53ca\u4f18\u5316Redis\u4e2dbig Hash\u7684\u4e00\u4e9b\u5efa\u8bae"},"content":{"rendered":"

Hash\u5e95\u5c42\u5b58\u50a8\u539f\u7406\u53ca\u4f18\u5316Redis\u4e2dbig Hash\u7684\u4e00\u4e9b\u5efa\u8bae<\/p>\n

Hash \u662f Redis \u4e2d\u51fa\u73b0\u6700\u4e3a\u9891\u7e41\u7684\u590d\u5408\u578b\u6570\u636e\u7ed3\u6784,\u9664\u4e86 dict \u7ed3\u6784\u7684\u6570\u636e\u4f1a\u7528\u5230Hash\u5916,\u6574\u4e2a Redis \u6570\u636e\u5e93\u7684\u6240\u6709 key \u548c value \u4e5f\u7ec4\u6210\u4e86\u4e00\u4e2a\u5168\u5c40Hash,\u8fd8\u6709\u5e26\u8fc7\u671f\u65f6\u95f4\u7684 key \u96c6\u5408\u4e5f\u662f\u4e00\u4e2aHash\u3002set\u96c6\u5408\u76f8\u5f53\u4e8e\u4e00\u4e2avalue\u4e3anull\u7684Hash\uff0czset \u96c6\u5408\u4e2d\u5b58\u50a8 value \u548c score \u503c\u7684\u6620\u5c04\u5173\u7cfb\u4e5f\u662f\u901a\u8fc7 hash \u7ed3\u6784\u5b9e\u73b0\u7684\u3002<\/p>\n

\u7531\u4e8e\u4e1a\u52a1\u4e0a\u8003\u8651\u4e0d\u5468\uff0c\u4f7f\u5f97\u751f\u4ea7\u73af\u5883\u4e2d\u6709\u4e00\u4e2ahash\u7ed3\u6784\u5b58\u50a8\u7684\u6570\u636e\u91cf\u8fbe\u523040w\uff0c\u5bfc\u81f4redis\u7684\u5185\u5b58\u4f7f\u7528\u91cf\u4e0d\u65ad\u589e\u5927\uff0c\u800c\u8fd9\u4e2akey\u7684\u67e5\u8be2\u6548\u7387\u4e5f\u8d8a\u6765\u8d8a\u4f4e\uff0c\u5931\u53bb\u4e86\u521a\u5f00\u59cb\u60f3\u7528\u7f13\u5b58\u6765\u52a0\u5feb\u67e5\u8be2\u901f\u5ea6\u7684\u521d\u8877\u3002\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u51fa\u73b0big hash\uff0c\u8fd9\u91cc\u5148\u5206\u6790hash\u7684\u5b9e\u73b0\u539f\u7406\u4e0e\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u7684\u6269\u5bb9\u673a\u5236\u3002<\/p>\n

Hash\u539f\u7406<\/h3>\n

Hash\u5185\u90e8\u5b9e\u73b0\u7ed3\u6784\u4e0a\u540c Java \u7684 HashMap \u5927\u81f4\u76f8\u540c\uff0c\u90fd\u662f\u91c7\u7528\u6570\u7ec4 + \u94fe\u8868\u4e8c\u7ef4\u7ed3\u6784\u3002\u7b2c\u4e00\u7ef4 hash \u7684\u6570\u7ec4\u4f4d\u7f6e\u78b0\u649e\u65f6,\u5c31\u4f1a\u5c06\u78b0\u649e\u7684\u5143\u7d20\u4f7f\u7528\u94fe\u8868\u4e32\u63a5\u8d77\u6765\uff0c\u94fe\u8868\u957f\u5ea6\u8fc7\u957f\u65f6\uff0c\u67e5\u8be2\u65f6\u95f4\u590d\u6742\u5ea6\u4f1a\u964d\u4f4e\u5230O(n)\u3002<\/p>\n

\"image-20210315091020144\"<\/p>\n

Java8\u4e2d\u5f53\u94fe\u8868\u957f\u5ea6\u5927\u4e8e8\u65f6\u4f1a\u81ea\u52a8\u8f6c\u6362\u4e3a\u7ea2\u9ed1\u6811\uff0c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\uff0credis\u5bf9\u94fe\u8868\u91c7\u7528zipList\u548chashtable\u4e24\u79cd\u7ed3\u6784\u5b58\u50a8\u3002<\/p>\n

\u5e95\u5c42\u7ed3\u6784<\/h3>\n

zipList<\/h4>\n

ziplist\u662f\u4e3a\u4e86\u8282\u7701\u5185\u5b58\u800c\u5f00\u53d1\u7684\u4e00\u79cd\u538b\u7f29\u5217\u8868\u6570\u636e\u7ed3\u6784\uff0cziplist\u662f\u7531\u4e00\u7cfb\u5217\u7279\u6b8a\u7f16\u7801\u7684\u8fde\u7eed\u5185\u5b58\u5757\u7ec4\u6210\u7684\u987a\u5e8f\u578b\u6570\u636e\u7ed3\u6784\uff0c\u4e00\u4e2aziplist\u53ef\u4ee5\u5305\u542b\u4efb\u610f\u591a\u4e2aentry\uff0c\u800c\u6bcf\u4e00\u4e2aentry\u53c8\u53ef\u4ee5\u4fdd\u5b58\u4e00\u4e2a\u5b57\u8282\u6570\u7ec4\u6216\u8005\u4e00\u4e2a\u6574\u6570\u503c\uff0cziplist\u4e0d\u5b58\u50a8\u6307\u5411\u4e0a\u4e00\u4e2a\u8282\u70b9\u548c\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488\uff0c\u5b58\u50a8\u7684\u662f\u4e0a\u4e00\u4e2a\u8282\u70b9\u7684\u957f\u5ea6\u548c\u5f53\u524d\u8282\u70b9\u7684\u957f\u5ea6\uff0c\u727a\u7272\u4e86\u90e8\u5206\u8bfb\u5199\u6027\u80fd\u6765\u6362\u53d6\u9ad8\u6548\u7684\u5185\u5b58\u5229\u7528\u7387\uff0c\u662f\u4e00\u79cd\u65f6\u95f4\u6362\u7a7a\u95f4\u7684\u601d\u60f3\uff0cziplist\u9002\u7528\u4e8e\u5b57\u6bb5\u4e2a\u6570\u5c11\u548c\u5b57\u6bb5\u503c\u5c11\u7684\u573a\u666f\u3002<\/p>\n

ziplist<\/code>\u7684\u7ec4\u6210\u7ed3\u6784\u4e3a\uff1a<\/p>\n

<zlbytes> <zltail> <zllen> <entry> <entry> ... <entry> <zlend>\n<\/code><\/pre>\n
\"image-20210315092243393\"<\/p>\n
hashtable<\/h4>\n
Hashtable\u662f\u901a\u8fc7dictEntry\u5bf9\u8c61\u6765\u5b9e\u73b0\u7684\uff0c\u5c06dictEntry\u5bf9\u8c61\u8fdb\u884c\u518d\u6b21\u5305\u88c5\u5f97\u5230\u5bf9\u8c61dictht\uff1a<\/p>\n
typedef struct dictht {\n    dictEntry **table;\/\/\u54c8\u5e0c\u8868\u6570\u7ec4\uff0c\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u4e00\u4e2adictEntry\u5bf9\u8c61\u3002\n    unsigned long size;\/\/\u54c8\u5e0c\u8868\u5927\u5c0f\n    unsigned long sizemask;\/\/\u63a9\u7801\u5927\u5c0f\uff0c\u7528\u4e8e\u8ba1\u7b97\u7d22\u5f15\u503c\uff0c\u603b\u662f\u7b49\u4e8esize-1\n    unsigned long used;\/\/\u54c8\u5e0c\u8868\u4e2d\u7684\u5df2\u6709\u8282\u70b9\u6570\n} dictht;\n<\/code><\/pre>\n
\u5b57\u5178\u7684\u5185\u90e8\u5d4c\u5957\u4e86\u54c8\u5e0c\u8868dictht\u5bf9\u8c61\uff0c\u4e0b\u9762\u662f\u5b57\u5178\u7684\u5b9a\u4e49\uff1a<\/p>\n
typedef struct dict {\n    dictType *type;\/\/\u5b57\u5178\u7c7b\u578b\u7684\u4e00\u4e9b\u7279\u5b9a\u51fd\u6570\n    void *privdata;\/\/\u79c1\u6709\u6570\u636e\uff0ctype\u4e2d\u7684\u7279\u5b9a\u51fd\u6570\u53ef\u80fd\u9700\u8981\u7528\u5230\n    dictht ht[2];\/\/\u54c8\u5e0c\u8868(\u6ce8\u610f\u8fd9\u91cc\u67092\u4e2a\u54c8\u5e0c\u8868)\n    long rehashidx; \/\/rehash\u7d22\u5f15\uff0c\u4e0d\u5728rehash\u65f6\uff0c\u503c\u4e3a-1\n    unsigned long iterators; \/\/\u6b63\u5728\u4f7f\u7528\u7684\u8fed\u4ee3\u5668\u6570\u91cf\n} dict;\n<\/code><\/pre>\n
\u6240\u4ee5\u5f53\u521b\u5efa\u4e00\u4e2a\u54c8\u5e0c\u5bf9\u8c61\u65f6\uff0c\u6574\u4f53\u7c7b\u7ed3\u6784\u5982\u4e0b<\/p>\n
\"image-20210315092210011\"<\/p>\n
ziplist\u4e0ehashtable\u8f6c\u6362\u673a\u5236<\/h4>\n
\u5f53\u4e00\u4e2a\u54c8\u5e0c\u5bf9\u8c61\u53ef\u4ee5\u6ee1\u8db3\u4ee5\u4e0b\u4e24\u4e2a\u6761\u4ef6\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\uff0c\u54c8\u5e0c\u5bf9\u8c61\u4f1a\u9009\u62e9\u4f7f\u7528ziplist\u6765\u8fdb\u884c\u5b58\u50a8\uff1a<\/p>\n
    \n
  1. \u54c8\u5e0c\u5bf9\u8c61\u4e2d\u7684\u6240\u6709\u952e\u503c\u5bf9\u603b\u957f\u5ea6(\u5305\u62ec\u952e\u548c\u503c)\u5c0f\u4e8e64\u5b57\u8282\uff08\u8fd9\u4e2a\u9608\u503c\u53ef\u4ee5\u901a\u8fc7\u53c2\u6570hash-max-ziplist-value \u6765\u8fdb\u884c\u63a7\u5236\uff09\u3002<\/li>\n
  2. \u54c8\u5e0c\u5bf9\u8c61\u4e2d\u7684\u952e\u503c\u5bf9\u6570\u91cf\u5c0f\u4e8e512\u4e2a\uff08\u8fd9\u4e2a\u9608\u503c\u53ef\u4ee5\u901a\u8fc7\u53c2\u6570hash-max-ziplist-entries \u6765\u8fdb\u884c\u63a7\u5236\uff09\u3002<\/li>\n<\/ol>\n
    \u4e00\u65e6\u4e0d\u6ee1\u8db3\u8fd9\u4e24\u4e2a\u6761\u4ef6\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\uff0c\u54c8\u5e0c\u5bf9\u8c61\u5c31\u4f1a\u9009\u62e9\u4f7f\u7528hashtable\u6765\u5b58\u50a8\u3002<\/p>\n
    \u6269\u5bb9\u6d41\u7a0b<\/h3>\n
    \u5927\u5b57\u5178\u7684\u6269\u5bb9\u662f\u975e\u5e38\u8017\u65f6\u95f4\u7684\uff0c\u9700\u8981\u91cd\u65b0\u7533\u8bf7\u65b0\u7684\u6570\u7ec4\uff0c\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u5f53 hash \u8868\u4e2d\u5143\u7d20\u7684\u4e2a\u6570\u7b49\u4e8e\u7b2c\u4e00\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u65f6\uff0c\u5c31\u4f1a\u5f00\u59cb\u6269\u5bb9\uff0c\u6269\u5bb9\u7684\u65b0\u6570\u7ec4\u662f\u539f\u6570\u7ec4\u5927\u5c0f\u7684 2 \u500d\uff0c\u7136\u540e\u5c06\u65e7\u5b57\u5178\u6240\u6709\u94fe\u8868\u4e2d\u7684\u5143\u7d20\u91cd\u65b0\u6302\u63a5\u5230\u65b0\u7684\u6570\u7ec4\u4e0b\u9762\uff0c\u8fd9\u662f\u4e00\u4e2a O(n)\u7ea7\u522b\u7684\u64cd\u4f5c\uff0cRedis \u4f7f\u7528\u6e10\u8fdb\u5f0f rehash \u6269\u5bb9\uff0c\u5206\u591a\u6b21\u6765\u6162\u6162\u7684\u5c06\u65e7\u6570\u7ec4\u4e2d\u7684\u952e\u503c\u5bf9rehash\u5230\u65b0\u6570\u7ec4\u7684\u64cd\u4f5c\u5c31\u79f0\u4e4b\u4e3a\u6e10\u8fdb\u5f0frehash\u3002\u6e10\u8fdb\u5f0frehash\u53ef\u4ee5\u907f\u514d\u4e86\u96c6\u4e2d\u5f0frehash\u5e26\u6765\u7684\u5e9e\u5927\u8ba1\u7b97\u91cf\uff0c\u5728\u6e10\u8fdb\u5f0frehash\u8fc7\u7a0b\u4e2d\uff0c\u56e0\u4e3a\u8fd8\u53ef\u80fd\u4f1a\u6709\u65b0\u7684\u952e\u503c\u5bf9\u5b58\u8fdb\u6765\uff0c\u6b64\u65f6Redis\u7684\u505a\u6cd5\u662f\u65b0\u6dfb\u52a0\u7684\u952e\u503c\u5bf9\u7edf\u4e00\u653e\u5165ht[1]\u4e2d\uff0c\u8fd9\u6837\u5c31\u786e\u4fdd\u4e86ht[0]\u952e\u503c\u5bf9\u7684\u6570\u91cf\u53ea\u4f1a\u51cf\u5c11\uff0c\u5f53\u6267\u884crehash\u64cd\u4f5c\u65f6\u9700\u8981\u6267\u884c\u67e5\u8be2\u64cd\u4f5c\uff0c\u6b64\u65f6\u4f1a\u5148\u67e5\u8be2ht[0]\uff0c\u67e5\u627e\u4e0d\u5230\u7ed3\u679c\u518d\u5230ht[1]\u4e2d\u67e5\u8be2\u3002<\/p>\n
    \u95ee\u9898\u5206\u6790<\/h3>\n
    1.\u5b58\u50a8\u95ee\u9898<\/h4>\n
    \u5f53key\u503c\u5230\u8fbe40w\u5de6\u53f3\uff0c\u5e95\u5c42\u5b58\u50a8\u5fc5\u7136\u4f1a\u8f6c\u6362\u4e3ahashtable\uff0c\u76f8\u6bd4hashtable\uff0cziplist\u7ed3\u6784\u5c11\u4e86\u6307\u9488\uff0c\u5927\u5927\u7684\u51cf\u5c11\u4e86\u5185\u5b58\u7684\u4f7f\u7528\uff0c\u800c\u5185\u5b58\u5bf9\u4e8eredis\u6765\u8bf4\u5f25\u8db3\u73cd\u8d35\uff0cziplist\u5b58\u50a8\u65f6\u5185\u5b58\u5206\u914d\u662f\u8fde\u7eed\u7684\uff0c\u67e5\u8be2\u66f4\u5feb\u3002<\/p>\n
    2.\u6269\u5bb9\u95ee\u9898<\/h4>\n
    \u6bcf\u6b21\u6269\u5bb9\u9700\u8981\u5148\u7533\u8bf72\u500d\u4e8e\u5f53\u524d\u6570\u7ec4\u5927\u5c0f\u7684\u65b0\u6570\u7ec4\uff0c\u65e7\u6570\u7ec4\u8d8a\u5927\uff0c\u65b0\u6570\u7ec4\u7684\u5185\u5b58\u5360\u7528\u4e5f\u4f1a\u7ffb\u500d\uff0c\u5f53\u6269\u5bb9\u8fc7\u7a0b\u4e2d\uff0c\u7531\u4e8eredis\u662f\u5355\u7ebf\u7a0b\uff0c\u5728\u5c06\u65e7\u6570\u636e\u642c\u8fc1\u7684\u7684\u8fc7\u7a0b\u4e2d\u8fd8\u8981\u652f\u6301\u5176\u4ed6\u64cd\u4f5c\u7684\u8fdb\u884c\uff0c\u5982\u679c\u6b64\u65f6\u6570\u636e\u8fd8\u5728\u4e0d\u65ad\u589e\u52a0\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0redis\u8fc1\u79fb\u5f88\u4e45\u7ec8\u4e8e\u8fc1\u5230\u65b0\u6570\u7ec4\u540e\uff0c\u53c8\u8fbe\u5230\u6269\u5bb9\u6761\u4ef6\uff0c\u9700\u8981\u7ee7\u7eed\u6269\u5bb9\u8fc1\u79fb\u3002\u6574\u4e2aredis\u670d\u52a1\u5668\u7684\u6027\u80fd\u90fd\u4f1a\u88ab\u62d6\u7d2f\u3002<\/p>\n
    3.\u67e5\u8be2\u95ee\u9898<\/h4>\n
    \u5f53key\u503c\u6570\u91cf\u500d\u589e\uff0c\u53d1\u751fhash\u51b2\u7a81\u7684\u6982\u7387\u4e5f\u4f1a\u589e\u52a0\uff0credis\u5e95\u5c42\u53ea\u6709\u94fe\u8868\u6765\u5b58\u50a8\uff0c\u6ca1\u6709\u4f7f\u7528\u67e5\u8be2\u6811\u7b49\u9ad8\u6548\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4f1a\u8ba9\u67e5\u8be2\u901f\u5ea6\u4eceO(1)\u9000\u5316\u5230O(n)\uff0c\u5f71\u54cd\u4e1a\u52a1\u67e5\u8be2\u6548\u7387\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n
    \u4f18\u5316\u5efa\u8bae<\/h3>\n
      \n
    1. \u65e7\u6570\u636e\u7684\u9700\u6c42\u662f\u600e\u6837\u7684\uff0c\u662f\u5426\u53ef\u4ee5\u901a\u8fc7\u66f4\u6362\u6570\u636e\u7ed3\u6784\u6765\u5b9e\u73b0\uff0c\u5982\u679c\u53ea\u662f\u7b80\u5355\u7684\u5224\u65ad\u8be5\u6570\u636e\u662f\u5426\u5b58\u5728\uff0c\u53ef\u4ee5\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u5e03\u9686\u8fc7\u6ee4\u5668\u9002\u7528\u4f4d\u6570\u7ec4\u5b9e\u73b0\uff0c\u5185\u5b58\u5360\u7528\u7279\u522b\u5c0f\uff0c\u867d\u7136\u53ef\u80fd\u51fa\u73b0\u4e00\u5b9a\u7684\u504f\u5dee\uff0c\u4f46\u4e0d\u4f1a\u9020\u6210\u5927\u89c4\u6a21\u7f13\u5b58\u7a7f\u900f\u7684\u95ee\u9898\uff0c\u5c0f\u90e8\u5206\u6570\u636e\u9519\u8bef\u53ef\u4ee5\u901a\u8fc7\u6570\u636e\u5e93\u5c42\u9762\u5904\u7406\uff0c\u4e0d\u5f71\u54cd\u6b63\u5e38\u8bf7\u6c42\u7684\u6d41\u7a0b\u3002<\/li>\n
    2. \u5c06key\u6839\u636e\u5173\u952e\u5b57\u6bb5\u6765\u5212\u5206\uff0ckey\u540d\u79f0\u4e00\u822c\u4e3axxx:xxx:xxx\uff0c:\u7684\u4f7f\u7528\u7c7b\u4f3c\u4e8e\u4e00\u79cd\u6811\u5f62\u7ed3\u6784\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u4e0d\u540c\u7c7b\u578b\u533a\u5206\u4e0d\u540c\u7684hash\uff0c\u6216\u8005\u8fd8\u53ef\u4ee5\u7528\u65f6\u95f4\u6765\u5212\u5206\uff0c\u65f6\u95f4\u5212\u5206\u533a\u95f4\u53ef\u4ee5\u7a0d\u5927\u4e9b\uff0c\u5982\u6bcf\u4e2a\u6708\u6216\u6bcf\u5468\u4f5c\u4e3a\u547d\u540d\u533a\u95f4\uff0c\u8fd9\u6837\u5728\u67e5\u8be2\u7684\u65f6\u5019\u53ef\u4ee5\u7528\u7c7b\u578b\u5b57\u6bb5\u65f6\u95f4\u5b57\u6bb5\u8fdb\u884c\u4e0d\u540c\u7684\u5206\u6d41\uff0c\u8fd8\u53ef\u4ee5\u7701\u53bb\u5224\u65ad\u673a\u5236\uff0c\u5c3d\u91cf\u5c06\u6bcf\u4e2ahash\u7684key\u6570\u91cf\u4fdd\u6301\u57281w\u5de6\u53f3\u3002<\/li>\n
    3. \u5408\u7406\u7684\u5220\u9664\u673a\u5236\uff0c\u56e0\u4e3a\u53ea\u80fd\u8bbe\u7f6ehash\u6574\u4f53\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u800c\u4e0d\u80fd\u7ec6\u5316\u5230\u6bcf\u4e00\u4e2akey\uff0c\u6240\u4ee5\u9700\u8981\u5728\u4ee3\u7801\u91cc\u53bb\u5b9a\u65f6\u5224\u65ad\uff0c\u53ca\u65f6\u5220\u9664\u5f88\u5c11\u88ab\u4f7f\u7528\u7684key\u503c\uff0c\u53ea\u7559\u4e0b\u70ed\u70b9\u6570\u636e\u3002<\/li>\n
    4. \u4f7f\u7528str\u6765\u4ee3\u66ffhash\uff0c\u8fd9\u6837\u7684\u597d\u5904\u662f\u53ef\u4ee5\u7075\u6d3b\u7684\u5bf9\u6bcf\u4e2astr\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u6bcf\u6b21\u8bbf\u95ee\u7684\u65f6\u5019\u518d\u4e0d\u65ad\u66f4\u65b0\u8fc7\u671f\u65f6\u95f4\uff0c\u4fdd\u8bc1\u70ed\u70b9\u6570\u636e\u4e0d\u4f1a\u8d85\u65f6\uff0c\u51b7\u6570\u636e\u80fd\u81ea\u52a8\u5931\u6548\uff0c\u4f46\u8fd9\u6837\u4e5f\u5b58\u5728\u4e00\u4e9b\u95ee\u9898\uff0credis\u4e2d\u5bf9\u8fc7\u671f\u6570\u636e\u7684\u6e05\u7406\u662f\u91c7\u7528\u968f\u673a\u7b56\u7565\u548c\u60f0\u6027\u7b56\u7565\uff0c\u8fd9\u6837\u80fd\u9632\u6b62\u5927\u89c4\u6a21\u6570\u636e\u5931\u6548\u8fdb\u884c\u6e05\u9664\u65f6\u5360\u7528\u4e3b\u7ebf\u7a0b\uff0c\u7136\u800c\u4e5f\u4f1a\u5bfc\u81f4\u5f88\u591a\u6570\u636e\u5373\u4f7f\u8fc7\u671f\u4e86\u4e5f\u4e0d\u4f1a\u771f\u7684\u88ab\u6e05\u7406\u6389\uff0credis\u7684\u5185\u5b58\u5360\u7528\u8fd8\u662f\u4f1a\u4e0d\u65ad\u589e\u52a0\u3002<\/li>\n
    5. \u4f18\u5316key\u6216value\u7684\u5185\u5bb9\u5927\u5c0f\uff0c\u4f8b\u5982user\u53ef\u4ee5\u66ff\u6362\u4e3au\uff0corder\u4f7f\u7528o\uff0c\u6570\u636e\u7684\u547d\u540d\u4e0a\u4fdd\u6301\u7b80\u6d01\u660e\u4e86\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
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