{"id":201637,"date":"2025-05-10T11:14:43","date_gmt":"2025-05-10T03:14:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201637\/"},"modified":"2025-05-10T11:14:43","modified_gmt":"2025-05-10T03:14:43","slug":"redis%e5%9f%ba%e7%a1%80%e4%b9%8b%e5%88%86%e6%9e%90%e5%9f%ba%e7%a1%80%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84%e5%8f%8a%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201637\/","title":{"rendered":"Redis\u57fa\u7840\u4e4b\u5206\u6790\u57fa\u7840\u6570\u636e\u7ed3\u6784\u53ca\u7528\u6cd5"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>Redis\u57fa\u7840\u4e4b\u5206\u6790\u57fa\u7840\u6570\u636e\u7ed3\u6784\u53ca\u7528\u6cd5<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aRedis\u57fa\u7840\u4e4b\u5206\u6790\u57fa\u7840\u6570\u636e\u7ed3\u6784\u53ca\u7528\u6cd5\u300b\uff0c\u4e3b\u8981\u5305\u62ecRedis\u3001\u6570\u636e\u3001\u7ed3\u6784\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n<p>&nbsp;<\/p>\n<\/p>\n<p>\u672c\u6587\u8f6c\u8f7d\u81ea\u5fae\u4fe1\u516c\u4f17\u53f7\u300c SH\u7684\u5168\u6808\u7b14\u8bb0\u300d\uff0c\u4f5c\u8005 SH \u3002\u8f6c\u8f7d\u672c\u6587\u8bf7\u8054\u7cfbSH\u7684\u5168\u6808\u7b14\u8bb0\u516c\u4f17\u53f7\u3002<\/p>\n<p>\u5982\u679c\u4f60\u662f\u4e00\u4e2a\u6709\u7ecf\u9a8c\u7684\u540e\u7aef\u6216\u8005\u670d\u52a1\u5668\u5f00\u53d1\uff0c\u90a3\u4e48\u4e00\u5b9a\u542c\u8bf4\u8fc7Redis\uff0c\u5176\u5168\u79f0\u53ebRemote Dictionary &nbsp;Server\u3002\u662f\u7531C\u8bed\u8a00\u7f16\u5199\u7684\u57fa\u4e8eKey-Value\u7684\u5b58\u50a8\u7cfb\u7edf\u3002\u8bf4\u76f4\u767d\u70b9\u5c31\u662f\u4e00\u4e2a\u5185\u5b58\u6570\u636e\u5e93\uff0c\u65e2\u7136\u662f\u5185\u5b58\u6570\u636e\u5e93\u5c31\u4f1a\u9047\u5230\u5982\u679c\u670d\u52a1\u5668\u610f\u5916\u5b95\u673a\u9020\u6210\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002<\/p>\n<p>\u8fd9\u8ddf\u5f88\u591a\u6e38\u620f\u670d\u52a1\u5668\u4e5f\u662f\u4e00\u6837\u7684\uff0c\u611f\u5174\u8da3\u7684\u53ef\u4ee5\u53c2\u8003\u6211\u4e4b\u524d\u7684\u6587\u7ae0\u6e38\u620f\u670d\u52a1\u5668\u548cWeb\u670d\u52a1\u5668\u7684\u533a\u522b\u3002\u5176\u6570\u636e\u9996\u5148\u4f1a\u6d41\u5411\u5185\u5b58\uff0c\u57fa\u4e8e\u5feb\u901f\u7684\u5185\u5b58\u8bfb\u5199\u6765\u5b9e\u73b0\u9ad8\u6027\u80fd\uff0c\u7136\u540e\u5b9a\u671f\u5c06\u5185\u5b58\u7684\u6570\u636e\u4e2d\u7684\u6570\u636e\u843d\u5730\u3002Redis\u5176\u5b9e\u4e5f\u662f\u8fd9\u4e48\u4e2a\u6d41\u7a0b\uff0c\u57fa\u4e8e\u5feb\u901f\u7684\u5185\u5b58\u8bfb\u5199\u64cd\u4f5c\uff0c\u5355\u673a\u7684Redis\u751a\u81f3\u80fd\u591f\u625b\u4f4f10\u4e07\u7684QPS\u3002<\/p>\n<p>Redis\u9664\u4e86\u9ad8\u6027\u80fd\u4e4b\u5916\uff0c\u8fd8\u62e5\u6709\u4e30\u5bcc\u7684\u6570\u636e\u7ed3\u6784\uff0c\u652f\u6301\u5927\u591a\u6570\u7684\u4e1a\u52a1\u573a\u666f\u3002\u8fd9\u4e5f\u662f\u5176\u4e3a\u4ec0\u4e48\u5982\u6b64\u53d7\u6b22\u8fce\u7684\u539f\u56e0\u4e4b\u4e00\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u6765\u770b\u4e00\u770bRedis\u6709\u54ea\u4e9b\u57fa\u7840\u6570\u636e\u7c7b\u578b\uff0c\u4ee5\u53ca\u4ed6\u4eec\u5e95\u5c42\u90fd\u662f\u600e\u4e48\u5b9e\u73b0\u7684\u3002<\/p>\n<p><strong>1. \u6570\u636e\u7c7b\u578b<\/strong><\/p>\n<p>\u5176\u57fa\u7840\u6570\u636e\u7c7b\u578b\u6709String\u3001List\u3001Hash\u3001Set\u3001Sorted &nbsp;Set\uff0c\u8fd9\u4e9b\u90fd\u662f\u5e38\u7528\u7684\u57fa\u7840\u6570\u636e\u7c7b\u578b\uff0c\u53ef\u4ee5\u770b\u5230\u975e\u5e38\u4e30\u5bcc\uff0c\u51e0\u4e4e\u80fd\u591f\u6ee1\u8db3\u5927\u90e8\u5206\u7684\u9700\u6c42\u4e86\u3002\u5176\u5b9e\u8fd8\u6709\u4e00\u4e9b\u9ad8\u7ea7\u6570\u636e\u7ed3\u6784\uff0c\u6211\u4eec\u5728\u8fd9\u7ae0\u91cc\u6682\u65f6\u5148\u4e0d\u63d0\uff0c\u53ea\u804a\u57fa\u7840\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<p><strong>2. String<\/strong><\/p>\n<p>String\u53ef\u4ee5\u8bf4\u662f\u6700\u57fa\u7840\u7684\u6570\u636e\u7ed3\u6784\u4e86\uff0c &nbsp;\u7528\u6cd5\u4e0a\u53ef\u4ee5\u76f4\u63a5\u548cJava\u4e2d\u7684String\u6302\u94a9\uff0c\u4f60\u53ef\u4ee5\u628aString\u7c7b\u578b\u7528\u4e8e\u5b58\u50a8\u67d0\u4e2a\u6807\u5fd7\u4f4d\uff0c\u67d0\u4e2a\u8ba1\u6570\u5668\uff0c\u751a\u81f3\u72e0\u4e00\u70b9\uff0c\u5e8f\u5217\u5316\u4e4b\u540e\u7684JSON\u5b57\u7b26\u4e32\u90fd\u884c\uff0c\u5176\u5355\u4e2akey\u9650\u5236\u4e3a512M\u3002\u5176\u5e38\u89c1\u7684\u547d\u4ee4\u4e3aget\u3001set\u3001incr\u3001decr &nbsp;\u3001mget\u3002<\/p>\n<p><strong>2.1 \u4f7f\u7528<\/strong><\/p>\n<ul>\n<li>\n<p>get \u83b7\u53d6\u67d0\u4e2akey\uff0c\u5982\u679ckey\u4e0d\u5b58\u5728\u4f1a\u8fd4\u56de\u7a7a\u6307\u9488<\/p>\n<\/li>\n<li>\n<p>set \u7ed9key\u8d4b\u503c\uff0c\u5c06key\u8bbe\u7f6e\u4e3a\u6307\u5b9a\u7684\u503c\uff0c\u5982\u679c\u8be5key\u4e4b\u524d\u5df2\u7ecf\u6709\u503c\u4e86\uff0c\u90a3\u4e48\u5c06\u88ab\u65b0\u7684\u503c\u7ed9\u8986\u76d6<\/p>\n<\/li>\n<li>\n<p>incr &nbsp;\u7ed9\u5f53\u524d\u7684key\u7684\u503c+1\uff0c\u5982\u679ckey\u4e0d\u5b58\u5728\u5219\u4f1a\u5148\u7ed9key\u8c03\u7528set\u8d4b\u503c\u4e3a0\uff0c\u518d\u8c03\u7528incr\u3002\u5f53\u7136\u5982\u679c\u8be5key\u7684\u7c7b\u578b\u4e0d\u80fd\u505a\u52a0\u6cd5\u8fd0\u7b97\uff0c\u4f8b\u5982\u5b57\u7b26\u4e32\uff0c\u5c31\u4f1a\u629b\u51fa\u9519\u8bef<\/p>\n<\/li>\n<li>\n<p>decr \u7ed9\u5f53\u524dkey\u7684\u503c-1\uff0c\u5176\u4f59\u7684\u540c\u4e0a<\/p>\n<\/li>\n<li>\n<p>mget \u540cget\uff0c\u53ea\u662f\u4e00\u6b21\u6027\u8fd4\u56de\u591a\u6761\u6570\u636e\uff0c\u4e0d\u5b58\u5728\u7684key\u5c06\u4f1a\u8fd4\u56de\u7a7a\u6307\u9488<\/p>\n<p> <\/li>\n<\/ul>\n<\/p>\n<p>string\u76f8\u5173\u547d\u4ee4<\/p>\n<p>\u53ef\u80fd\u5927\u591a\u6570\u7684\u4eba\u53ea\u662f\u5230\u7528\u4e00\u7528\u7684\u5730\u6b65\uff0c\u8fd9\u4e5f\u65e0\u53ef\u539a\u975e\uff0c\u4f46\u662f\u5982\u679c\u662f\u4f5c\u4e3a\u4e00\u4e2a\u5bf9\u6280\u672f\u6709\u8ffd\u6c42\u7684\u5f00\u53d1\uff0c\u6216\u8005\u8bf4\u4f60\u6709\u60f3\u8fd1\u5927\u5382\u7684\u60f3\u6cd5\uff0c\u4e00\u5b9a\u8981\u6709\u5228\u6839\u95ee\u5e95\u7684\u7cbe\u795e\u3002\u53ea\u6709\u5f53\u4f60\u771f\u6b63\u77e5\u9053\u4e00\u4e2a\u4e1c\u897f\u7684\u5e95\u5c42\u539f\u7406\u65f6\uff0c\u4f60\u9047\u5230\u95ee\u9898\u65f6\u624d\u80fd\u63d0\u4f9b\u7ed9\u4f60\u66f4\u591a\u7684\u601d\u8def\u53bb\u89e3\u51b3\u95ee\u9898\u3002\u63a5\u4e0b\u6765\u6211\u4eec\u5c31\u6765\u804a\u4e00\u4e0bRedis\u4e2dString\u5e95\u5c42\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u3002<\/p>\n<p><strong>2.2 \u539f\u7406<\/strong><\/p>\n<p><strong>2.2.1 \u7ed3\u6784<\/strong><\/p>\n<p>\u6211\u4eec\u77e5\u9053Redis\u662f\u7528C\u8bed\u8a00\u5199\u7684\uff0c\u4f46\u662fRedis\u5374\u6ca1\u6709\u76f4\u63a5\u4f7f\u7528\uff0c\u800c\u662f\u81ea\u5df1\u5b9e\u73b0\u4e86\u4e00\u4e2a\u53ebSDS(Simple Dynamic &nbsp;String)\u7684\u7ed3\u6784\u6765\u5b9e\u73b0\u5b57\u7b26\u4e32\uff0c\u7ed3\u6784\u5982\u4e0b\u3002<\/p>\n<\/p>\n<pre>struct&nbsp;sdshdr&nbsp;{&nbsp;\r\n&nbsp;&nbsp;\/\/&nbsp;\u8bb0\u5f55buf\u4e2d\u5df2\u4f7f\u7528\u7684\u5b57\u8282\u6570\u91cf&nbsp;\r\n&nbsp;&nbsp;int&nbsp;len;&nbsp;\r\n&nbsp;&nbsp;\/\/&nbsp;\u8bb0\u5f55buf\u4e2d\u672a\u4f7f\u7528\u7684\u5b57\u8282\u6570\u91cf&nbsp;\r\n&nbsp;&nbsp;int&nbsp;free;&nbsp;\r\n&nbsp;&nbsp;char&nbsp;buf[];<\/pre>\n<\/p>\n<p><strong>2.2.2 \u4f18\u70b9<\/strong><\/p>\n<p>\u4e3a\u4ec0\u4e48Redis\u8981\u81ea\u5df1\u5b9e\u73b0SDS\u800c\u4e0d\u662f\u76f4\u63a5\u7528C\u7684\u5b57\u7b26\u4e32\u5462?\u4e3b\u8981\u662f\u56e0\u4e3a\u4ee5\u4e0b\u51e0\u70b9\u3002<\/p>\n<ul>\n<li>\n<p>\u51cf\u5c11\u83b7\u53d6\u5b57\u7b26\u4e32\u957f\u5ea6\u5f00\u9500 &nbsp;C\u8bed\u8a00\u4e2d\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u9700\u8981\u904d\u5386\u6574\u4e2a\u5b57\u7b26\u4e32\uff0c\u76f4\u5230\u9047\u5230\u7ed3\u675f\u6807\u5fd7\u4f4d \uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\uff0c\u800cSDS\u76f4\u63a5\u7ef4\u62a4\u4e86\u957f\u5ea6\u7684\u53d8\u91cf\uff0c\u53d6\u957f\u5ea6\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(1)<\/p>\n<\/li>\n<li>\n<p>\u907f\u514d\u7f13\u51b2\u533a\u6ea2\u51fa &nbsp;C\u8bed\u8a00\u4e2d\u5982\u679c\u5f80\u4e00\u4e2a\u5b57\u8282\u6570\u7ec4\u4e2d\u585e\u5165\u8d85\u8fc7\u5176\u5bb9\u91cf\u7684\u5b57\u8282\uff0c\u90a3\u4e48\u5c31\u4f1a\u9020\u6210\u7f13\u51b2\u533a\u6ea2\u51fa\uff0c\u800cSDS\u901a\u8fc7\u7ef4\u62a4free\u53d8\u91cf\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002\u5411buf\u6570\u7ec4\u4e2d\u5199\u5165\u6570\u636e\u65f6\uff0c\u4f1a\u5148\u5224\u65ad\u5269\u4f59\u7684\u7a7a\u95f4\u662f\u5426\u8db3\u591f\u585e\u5165\u65b0\u6570\u636e\uff0c\u5982\u679c\u4e0d\u591f\uff0cSDS\u5c31\u4f1a\u91cd\u65b0\u5206\u914d\u7f13\u51b2\u533a\uff0c\u52a0\u5927\u4e4b\u524d\u7684\u7f13\u51b2\u533a\u3002\u4e14\u52a0\u5927\u7684\u957f\u5ea6\u7b49\u4e8e\u65b0\u589e\u7684\u6570\u636e\u7684\u957f\u5ea6<\/p>\n<\/li>\n<li>\n<p>\u7a7a\u95f4\u9884\u5206\u914d&amp;\u7a7a\u95f4\u60f0\u6027\u91ca\u653e &nbsp;C\u8bed\u8a00\u4e2d\uff0c\u6bcf\u6b21\u4fee\u6539\u5b57\u7b26\u4e32\u90fd\u4f1a\u91cd\u65b0\u5206\u914d\u5185\u5b58\u7a7a\u95f4\uff0c\u5982\u679c\u5bf9\u5b57\u7b26\u4e32\u4fee\u6539\u4e86n\u6b21\uff0c\u90a3\u4e48\u5fc5\u7136\u4f1a\u51fa\u73b0n\u6b21\u5185\u5b58\u91cd\u65b0\u5206\u914d\u3002\u800cSDS\u7531\u4e8e\u5197\u4f59\u4e86\u4e00\u90e8\u5206\u7a7a\u95f4\uff0c\u4f18\u5316\u4e86\u8fd9\u4e2a\u95ee\u9898\uff0c\u5c06\u5fc5\u7136\u91cd\u65b0\u5206\u914dn\u6b21\u53d8\u4e3a\u6700\u591a\u5206\u914dn\u6b21\uff0c\u800c\u6570\u636e\u4ecebuf\u4e2d\u79fb\u9664\u7684\u65f6\u5019\uff0c\u7a7a\u95f2\u51fa\u6765\u7684\u5185\u5b58\u4e5f\u4e0d\u4f1a\u9a6c\u4e0a\u88ab\u56de\u6536\uff0c\u9632\u6b62\u65b0\u5199\u5165\u6570\u636e\u800c\u9020\u6210\u5185\u5b58\u91cd\u65b0\u5206\u914d<\/p>\n<\/li>\n<li>\n<p>\u4fdd\u8bc1\u4e8c\u8fdb\u5236\u5b89\u5168 C\u8bed\u8a00\u4e2d\uff0c\u5b57\u7b26\u4e32\u9047\u5230 \u4f1a\u88ab\u622a\u65ad\uff0c\u800cSDS\u4e0d\u4f1a\u56e0\u4e3a\u6570\u636e\u4e2d\u51fa\u73b0\u4e86 \u800c\u622a\u65ad\u5b57\u7b26\u4e32\uff0c\u6362\u53e5\u8bdd\u8bf4\uff0c\u4e0d\u4f1a\u56e0\u4e3a\u4e00\u4e9b\u7279\u6b8a\u7684\u5b57\u7b26\u5f71\u54cd\u5b9e\u9645\u7684\u8fd0\u7b97\u7ed3\u679c<\/p>\n<\/li>\n<\/ul>\n<p>\u53ef\u4ee5\u7ed3\u5408\u4e0b\u9762\u7684\u56fe\u6765\u7406\u89e3SDS\u3002<\/p>\n<\/p>\n<p>\u56fe\u7247\u6765\u6e90\u4e8e\u7f51\u7edc\uff0c\u4fb5\u5220<\/p>\n<p>\u603b\u7ed3\u4e00\u4e0b\u5c31\u662f\u4e0a\u9762\u5217\u8868\u7684\u56db\u4e2a\u5c0f\u6807\u9898\uff0c\u4e3a\u4e86\u51cf\u5c11\u83b7\u53d6\u5b57\u7b26\u4e32\u957f\u5ea6\u5f00\u9500\u3001\u907f\u514d\u7f13\u51b2\u533a\u6ea2\u51fa\u3001\u7a7a\u95f4\u9884\u5206\u914d&amp;\u7a7a\u95f4\u60f0\u6027\u91ca\u653e\u548c\u4fdd\u8bc1\u4e8c\u8fdb\u5236\u5b89\u5168\u3002<\/p>\n<p><strong>3. &nbsp;List<\/strong><\/p>\n<p>List\u4e5f\u662f\u4e00\u4e2a\u4f7f\u7528\u9891\u7387\u5f88\u9ad8\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5176\u6d89\u53ca\u5230\u7684\u547d\u4ee4\u592a\u591a\u4e86\uff0c\u5c31\u4e0d\u50cfString\u90a3\u6837\u4e00\u4e2a\u4e00\u4e2a\u6f14\u793a\u4e86\uff0c\u611f\u5174\u8da3\u7684\u5927\u5bb6\u53ef\u4ee5\u53bb\u641c\u4e00\u641c\u3002\u547d\u4ee4\u6709lpush\u3001lpushx\u3001rpush\u3001rpushx\u3001lpop\u3001rpop\u3001lindex\u3001linsert\u3001lrange\u3001llen\u3001lrem\u3001lset\u3001ltrim\u3001rpoplpush\u3001brpoplpush\u3001blpop\u3001brpop\uff0c\u5176\u90fd\u662f\u5bf9\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u7684\u64cd\u4f5c\u3002<\/p>\n<p><strong>3.1 \u4f7f\u7528<\/strong><\/p>\n<p>List\u7684\u7528\u9014\u6211\u8ba4\u4e3a\u4e3b\u8981\u96c6\u4e2d\u5728\u4ee5\u4e0b\u4e24\u4e2a\u65b9\u9762\u3002<\/p>\n<p>\u5f53\u4f5c\u666e\u901a\u5217\u8868\u5b58\u50a8\u6570\u636e(\u7c7b\u4f3c\u4e8eJava\u7684ArrayList)<\/p>\n<p>\u7528\u505a\u5f02\u6b65\u961f\u5217<\/p>\n<p>\u666e\u901a\u5217\u8868\u8fd9\u4e2a\u81ea\u7136\u4e0d\u5fc5\u591a\u8bf4\uff0c\u5176\u4e2d\u5b58\u653e\u7684\u5fc5\u7136\u4e1a\u52a1\u4e2d\u9700\u8981\u7684\u6570\u636e\uff0c\u4e0b\u9762\u6765\u7740\u91cd\u804a\u4e00\u4e0b\u5f02\u6b65\u961f\u5217\u3002<\/p>\n<p>\u5565\u73a9\u610f\uff0cList\u8fd8\u80fd\u5f53\u6210\u961f\u5217\u6765\u73a9?<\/p>\n<p>List\u9664\u4e86\u80fd\u88ab\u7528\u505a\u961f\u5217\uff0c\u8fd8\u80fd\u5f53\u4f5c\u6808\u6765\u4f7f\u7528\u3002\u5728\u4e0a\u9762\u4ecb\u7ecd\u4e86\u5f88\u591a\u64cd\u4f5cList\u547d\u4ee4\uff0c\u5f53\u6211\u4eec\u7528rpush\/lpop\u7ec4\u5408\u547d\u4ee4\u7684\u65f6\u5019\uff0c\u5b9e\u9645\u4e0a\u5c31\u662f\u5728\u4f7f\u7528\u4e00\u4e2a\u961f\u5217\uff0c\u800c\u5f53\u6211\u4eec\u7528rpush\/rpop\u547d\u4ee4\u7ec4\u5408\u7684\u65f6\u5019\uff0c\u5c31\u662f\u5728\u4f7f\u7528\u4e00\u4e2a\u6808\u3002lpush\/rpop\u548clpush\/lpop\u662f\u540c\u7406\u7684\u3002<\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u7528\u7684\u662frpush\u6765\u751f\u4ea7\u6d88\u606f\uff0c\u5f53\u6211\u4eec\u7684\u7a0b\u5e8f\u9700\u8981\u6d88\u8d39\u6d88\u606f\u7684\u65f6\u5019\uff0c\u5c31\u4f7f\u7528lpop\u4ece\u5f02\u6b65\u961f\u5217\u4e2d\u6d88\u8d39\u6d88\u606f\u3002\u4f46\u662f\u5982\u679c\u91c7\u7528\u8fd9\u79cd\u65b9\u5f0f\uff0c\u5f53\u961f\u5217\u4e3a\u7a7a\u65f6\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4e0d\u505c\u7684\u53bb\u8be2\u95ee\u961f\u5217\u4e2d\u662f\u5426\u6709\u6570\u636e\uff0c\u8fd9\u6837\u4f1a\u9020\u6210\u673a\u5668\u7684CPU\u8d44\u6e90\u7684\u6d6a\u8d39\u3002<\/p>\n<p>\u6240\u4ee5\u4f60\u53ef\u4ee5\u91c7\u53d6\u8ba9\u5f53\u524d\u7ebf\u7a0bSleep\u4e00\u6bb5\u65f6\u95f4\uff0c\u8fd9\u6837\u7684\u786e\u53ef\u4ee5\u8282\u7701\u4e00\u90e8\u5206CPU\u8d44\u6e90\u3002\u4f46\u662f\u4f60\u53ef\u80fd\u5c31\u9700\u8981\u53bb\u8003\u8651Sleep\u7684\u65f6\u95f4\uff0c\u95f4\u9694\u592a\u77ed\uff0cCPU\u4e0a\u4e0b\u6587\u5207\u6362\u53ef\u80fd\u4e5f\u662f\u4e00\u7b14\u4e0d\u5c0f\u7684\u5f00\u9500\uff0c\u95f4\u9694\u592a\u957f\uff0c\u90a3\u4e48\u53ef\u80fd\u9020\u6210\u8fd9\u6761\u6d88\u606f\u88ab\u5ef6\u8fdf\u6d88\u8d39(\u4e0d\u8fc7\u90fd\u7528\u5f02\u6b65\u961f\u5217\u4e86\uff0c\u5e94\u8be5\u53ef\u4ee5\u5ffd\u7565\u8fd9\u4e2a\u95ee\u9898)\u3002<\/p>\n<p>\u9664\u4e86Sleep\uff0c\u8fd8\u6709\u6ca1\u6709\u5176\u4ed6\u7684\u65b9\u5f0f?<\/p>\n<p>\u6709\uff0c\u7b54\u6848\u662fblpop\u3002\u5f53\u6211\u4eec\u4f7f\u7528blpop\u53bb\u6d88\u8d39\u65f6\uff0c\u5982\u679c\u5f53\u524d\u961f\u5217\u662f\u7a7a\u7684\uff0c\u90a3\u4e48\u6b64\u65f6\u7ebf\u7a0b\u4f1a\u963b\u585e\u4f4f\uff0c\u76f4\u5230\u4e0b\u9762\u4e24\u79cdcondition\u3002<\/p>\n<ol>\n<li>\n<p>\u8fbe\u5230\u8bbe\u7f6e\u7684timeout\u65f6\u95f4<\/p>\n<\/li>\n<li>\n<p>\u961f\u5217\u4e2d\u6709\u6d88\u606f\u53ef\u4ee5\u88ab\u6d88\u8d39<\/p>\n<\/li>\n<\/ol>\n<p>\u6bd4\u8d77Sleep\u4e00\u6bb5\u65f6\u95f4\uff0c\u5b9e\u65f6\u6027\u4f1a\u597d\u4e00\u70b9;\u6bd4\u8d77\u8f6e\u8be2\uff0c\u5bf9CPU\u8d44\u6e90\u66f4\u52a0\u53cb\u597d\u3002<\/p>\n<p><strong>3.2 &nbsp;\u539f\u7406<\/strong><\/p>\n<p>\u5728Redis3.2\u4e4b\u524d\uff0cRedis\u91c7\u7528\u7684\u662fZipList(\u538b\u7f29\u5217\u8868)\u6216\u8005LinkedList(\u94fe\u8868)\u3002\u5f53List\u4e2d\u7684\u5143\u7d20\u540c\u65f6\u6ee1\u8db3\u6bcf\u4e2a\u5143\u7d20\u7684\u5c0f\u4e8e64\u5b57\u8282\u548cList\u5143\u7d20\u4e2a\u6570\u5c0f\u4e8e512\u4e2a\u65f6\uff0c\u5b58\u50a8\u7684\u65b9\u5f0f\u4e3aZipList\u3002\u4f46\u51e1\u6709\u4e00\u4e2a\u6761\u4ef6\u6ca1\u6ee1\u8db3\u5c31\u4f1a\u8f6c\u6362\u4e3aLinkedList\u3002<\/p>\n<p>\u800c\u57283.2\u4e4b\u540e\uff0c\u5176\u5b9e\u73b0\u53d8\u6210\u4e86QuickList(\u5feb\u901f\u5217\u8868)\u3002LinkedList\u7531\u4e8e\u662f\u8f83\u4e3a\u57fa\u7840\u7684\u4e1c\u897f\uff0c\u6b64\u5904\u5c31\u4e0d\u8d58\u8ff0\u4e86\u3002<\/p>\n<p><strong>3.2.1 ZipList<\/strong><\/p>\n<p>ZipList\u91c7\u7528\u8fde\u7eed\u7684\u5185\u5b58\u7d27\u51d1\u5b58\u50a8\uff0c\u4e0d\u50cf\u94fe\u8868\u90a3\u6837\u9700\u8981\u6709\u989d\u5916\u7684\u7a7a\u95f4\u6765\u5b58\u50a8\u524d\u9a71\u8282\u70b9\u548c\u540e\u7eed\u8282\u70b9\u7684\u6307\u9488\u3002\u6309\u7167\u5176\u5b58\u50a8\u7684\u533a\u57df\u5212\u5206\uff0c\u5927\u81f4\u53ef\u4ee5\u5206\u4e3a\u4e09\u4e2a\u90e8\u5206\uff0c\u6bcf\u4e2a\u90e8\u5206\u4e5f\u6709\u81ea\u5df1\u7684\u5212\u5206\uff0c\u5176\u8be6\u7ec6\u7684\u7ed3\u6784\u5982\u4e0b\u3002<\/p>\n<ul>\n<li>\n<p>header ziplist\u7684\u5934\u90e8\u4fe1\u606f<\/p>\n<\/li>\n<ul>\n<li>\n<p>zlbytes \u6807\u8bc6ziplist\u6240\u5360\u7528\u7684\u5185\u5b58\u5b57\u8282\u6570<\/p>\n<\/li>\n<li>\n<p>zltail \u5230ziplist\u5c3e\u8282\u70b9\u7684\u504f\u79fb\u91cf<\/p>\n<\/li>\n<li>\n<p>zllen ziplist\u4e2d\u7684\u5b58\u50a8\u7684\u8282\u70b9\u6570\u91cf<\/p>\n<\/li>\n<\/ul>\n<li>\n<p>entries \u5b58\u50a8\u5b9e\u9645\u8282\u70b9\u7684\u4fe1\u606f<\/p>\n<\/li>\n<ul>\n<li>\n<p>pre_entry_length \u8bb0\u5f55\u4e86\u524d\u4e00\u4e2a\u8282\u70b9\u7684\u957f\u5ea6\uff0c\u901a\u8fc7\u8fd9\u4e2a\u503c\u53ef\u4ee5\u5feb\u901f\u7684\u8df3\u8f6c\u5230\u4e0a\u4e00\u4e2a\u8282\u70b9<\/p>\n<\/li>\n<li>\n<p>encoding \u987e\u540d\u601d\u4e49\uff0c\u5b58\u50a8\u91cf\u5143\u7d20\u7684\u7f16\u7801\u683c\u5f0f<\/p>\n<\/li>\n<li>\n<p>length \u6240\u5b58\u50a8\u6570\u636e\u7684\u957f\u5ea6<\/p>\n<\/li>\n<li>\n<p>content \u4fdd\u5b58\u8282\u70b9\u7684\u5185\u5bb9<\/p>\n<\/li>\n<\/ul>\n<li>\n<p>end \u6807\u8bc6ziplist\u7684\u672b\u5c3e<\/p>\n<\/li>\n<\/ul>\n<p>\u5982\u679c\u91c7\u7528\u94fe\u8868\u7684\u5b58\u50a8\u65b9\u5f0f\uff0c\u94fe\u8868\u4e2d\u7684\u5143\u7d20\u7531\u6307\u9488\u76f8\u8fde\uff0c\u8fd9\u6837\u7684\u65b9\u5f0f\u53ef\u80fd\u4f1a\u9020\u6210\u4e00\u5b9a\u7684\u5185\u5b58\u788e\u7247\u3002\u800c\u6307\u9488\u4e5f\u4f1a\u5360\u7528\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\u3002\u800cZipList\u4e0d\u4f1a\u5b58\u5728\u8fd9\u4e9b\u60c5\u51b5\uff0cZipList\u5360\u7528\u7684\u662f\u4e00\u6bb5\u8fde\u7eed\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/p>\n<p>\u4f46\u662f\u76f8\u5e94\u5730\uff0cZipList\u7684\u4fee\u6539\u64cd\u4f5c\u6548\u7387\u8f83\u4e3a\u4f4e\u4e0b\uff0c\u63d2\u5165\u548c\u5220\u9664\u7684\u64cd\u4f5c\u4f1a\u8bbe\u8ba1\u5230\u9891\u7e41\u7684\u5185\u5b58\u7a7a\u95f4\u7533\u8bf7\u548c\u91ca\u653e(\u6709\u70b9\u7c7b\u4f3c\u4e8eArrayList\u91cd\u65b0\u6269\u5bb9)\uff0c\u4e14\u67e5\u8be2\u6548\u7387\u540c\u6837\u4f1a\u53d7\u5f71\u54cd\uff0c\u672c\u8d28\u4e0aZipList\u67e5\u8be2\u5143\u7d20\u5c31\u662f\u904d\u5386\u94fe\u8868\u3002<\/p>\n<p><strong>3.2.2 QuickList<\/strong><\/p>\n<p>\u57283.2\u7248\u672c\u4e4b\u540e\uff0clist\u7684\u5b9e\u73b0\u5c31\u6362\u6210\u4e86QuickList\u3002QuickList\u5c06list\u5206\u6210\u4e86\u591a\u4e2a\u8282\u70b9\uff0c\u6bcf\u4e00\u4e2a\u8282\u70b9\u91c7\u7528ZipList\u5b58\u50a8\u6570\u636e\u3002<\/p>\n<p><strong>4. Hash<\/strong><\/p>\n<p>\u5176\u7528\u6cd5\u5c31\u8ddfJava\u4e2d\u7684HashMap\u4e2d\u4e00\u6837\uff0c\u90fd\u662f\u5f80map\u4e2d\u53bb\u4e22\u952e\u503c\u5bf9\u3002<\/p>\n<p><strong>4.1 \u4f7f\u7528<\/strong><\/p>\n<p>\u57fa\u7840\u7684\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\n<p>hset \u5728hash\u4e2d\u8bbe\u7f6e\u952e\u503c\u5bf9<\/p>\n<\/li>\n<li>\n<p>hget \u83b7hash\u4e2d\u7684\u67d0\u4e2akey\u503c<\/p>\n<\/li>\n<li>\n<p>hdel \u5220\u9664hash\u4e2d\u67d0\u4e2a\u952e<\/p>\n<\/li>\n<li>\n<p>hlen \u7edf\u8ba1hash\u4e2d\u5143\u7d20\u7684\u4e2a\u6570<\/p>\n<\/li>\n<li>\n<p>hmget \u6279\u91cf\u7684\u83b7\u53d6hash\u4e2d\u7684\u952e\u7684\u503c<\/p>\n<\/li>\n<li>\n<p>hmset \u6279\u91cf\u7684\u8bbe\u7f6ehash\u4e2d\u7684\u952e\u548c\u503c<\/p>\n<\/li>\n<li>\n<p>hexists \u5224\u65adhash\u4e2d\u67d0\u4e2akey\u662f\u5426\u5b58\u5728<\/p>\n<\/li>\n<li>\n<p>hkeys \u8fd4\u56dehash\u4e2d\u7684\u6240\u6709\u952e(\u4e0d\u5305\u542b\u503c)<\/p>\n<\/li>\n<li>\n<p>hvals \u8fd4\u56dehash\u4e2d\u7684\u6240\u6709\u503c(\u4e0d\u5305\u542b\u952e)<\/p>\n<\/li>\n<li>\n<p>hgetall \u83b7\u53d6\u6240\u6709\u7684\u952e\u503c\u5bf9\uff0c\u5305\u542b\u4e86\u952e\u548c\u503c<\/p>\n<\/li>\n<\/ul>\n<p>\u5176\u5b9e\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u7684\u4f7f\u7528\u8ddfHashMap\u662f\u5dee\u4e0d\u591a\u7684\uff0c\u6ca1\u6709\u4ec0\u4e48\u8f83\u4e3a\u7279\u6b8a\u7684\u5730\u65b9\u3002<\/p>\n<p><strong>4.2 &nbsp;\u539f\u7406<\/strong><\/p>\n<p>hash\u7684\u5e95\u5c42\u5b9e\u73b0\u4e5f\u662f\u6709\u4e24\u79cd\uff0cZipList\u548cHashTable\u3002\u4f46\u5177\u4f53\u91c7\u7528\u54ea\u4e00\u79cd\u4e0eRedis\u7684\u7248\u672c\u65e0\u5173\uff0c\u800c\u4e0e\u5f53\u524dhash\u4e2d\u6240\u5b58\u7684\u5143\u7d20\u6709\u5173\u3002\u9996\u5148\u5f53\u6211\u4eec\u521b\u5efa\u4e00\u4e2ahash\u7684\u65f6\u5019\uff0c\u91c7\u7528\u7684ZipList\u8fdb\u884c\u5b58\u50a8\u3002\u968f\u7740hash\u4e2d\u7684\u5143\u7d20\u589e\u591a\uff0c\u8fbe\u5230\u4e86Redis\u8bbe\u5b9a\u7684\u9608\u503c\uff0c\u5c31\u4f1a\u8f6c\u6362\u4e3aHashTable\u3002<\/p>\n<p>\u5176\u8bbe\u5b9a\u7684\u9608\u503c\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\n<p>\u5b58\u50a8\u7684\u67d0\u4e2a\u952e\u6216\u8005\u503c\u957f\u5ea6\u5927\u4e8e\u9ed8\u8ba4\u503c(64)<\/p>\n<\/li>\n<li>\n<p>ZipList\u4e2d\u5b58\u50a8\u7684\u5143\u7d20\u6570\u91cf\u5927\u4e8e\u9ed8\u8ba4\u503c(512)<\/p>\n<\/li>\n<\/ul>\n<p>ZipList\u4e0a\u9762\u6211\u4eec\u4e13\u95e8\u7b80\u5355\u5206\u6790\u4e86\u4e00\u4e0b\uff0c\u7406\u89e3\u8fd9\u4e2a\u8bbe\u5b9a\u5e94\u8be5\u4e5f\u6bd4\u8f83\u5bb9\u6613\u3002\u5f53ZipList\u4e2d\u7684\u5143\u7d20\u8fc7\u591a\u7684\u65f6\u5019\uff0c\u5176\u67e5\u8be2\u7684\u6548\u7387\u5c31\u4f1a\u53d8\u5f97\u4f4e\u4e0b\u3002\u800cHashTable\u7684\u5e95\u5c42\u8bbe\u8ba1\u5176\u5b9e\u548cJava\u4e2d\u7684HashMap\u5dee\u4e0d\u591a\uff0c\u90fd\u662f\u901a\u8fc7\u62c9\u94fe\u6cd5\u89e3\u51b3\u54c8\u5e0c\u51b2\u7a81\u3002\u5177\u4f53\u7684\u53ef\u4ee5\u53c2\u8003\u4ece\u57fa\u7840\u7684\u4f7f\u7528\u6765\u6df1\u6316HashMap\u8fd9\u7bc7\u6587\u7ae0\u3002<\/p>\n<p><strong>5. Set<\/strong><\/p>\n<p>Set\u7684\u6982\u5ff5\u53ef\u4ee5\u4e0eJava\u4e2d\u7684Set\u5212\u7b49\u53f7\uff0c\u7528\u4e8e\u5b58\u50a8\u4e00\u4e2a\u4e0d\u5305\u542b\u91cd\u590d\u5143\u7d20\u7684\u96c6\u5408\u3002<\/p>\n<p><strong>5.1 \u4f7f\u7528<\/strong><\/p>\n<p>\u5176\u4e3b\u8981\u7684\u547d\u4ee4\u5982\u4e0b\uff0ckey\u4ee3\u8868redis\u4e2d\u7684Set\uff0cmember\u4ee3\u8868\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<ul>\n<li>\n<p>sadd sadd key member [&#8230;] \u5c06\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u5143\u7d20\u52a0\u5165\u5230\u96c6\u5408\u4e2d\uff0c\u5982\u679c\u6709\u5df2\u7ecf\u5b58\u5728\u7684\u5143\u7d20\u4f1a\u5ffd\u7565\u6389\u3002<\/p>\n<\/li>\n<li>\n<p>srem srem key member [&#8230;]\u5c06\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u5143\u7d20\u4ece\u96c6\u5408\u4e2d\u79fb\u9664\uff0c\u4e0d\u5b58\u5728\u7684\u5143\u7d20\u4f1a\u88ab\u5ffd\u7565\u6389<\/p>\n<\/li>\n<li>\n<p>smembers smembers key\u8fd4\u56de\u96c6\u5408\u4e2d\u7684\u6240\u6709\u6210\u5458<\/p>\n<\/li>\n<li>\n<p>sismember dismember key member\u5224\u65admember\u5728key\u4e2d\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u5b58\u5728\u5219\u8fd4\u56de1\uff0c\u5982\u679c\u4e0d\u5b58\u5728\u5219\u8fd4\u56de0<\/p>\n<\/li>\n<li>\n<p>scard scard key\u8fd4\u56de\u96c6\u5408key\u4e2d\u7684\u5143\u7d20\u7684\u6570\u91cf<\/p>\n<\/li>\n<li>\n<p>smove move source destination &nbsp;member\u5c06\u5143\u7d20\u4ecesource\u96c6\u5408\u79fb\u52a8\u5230destination\u96c6\u5408\u3002\u5982\u679csource\u4e2d\u4e0d\u5305\u542bmember\uff0c\u5219\u4e0d\u4f1a\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\uff0c\u5f53\u4e14\u4ec5\u5f53\u5b58\u5728\u624d\u4f1a\u4ece\u96c6\u5408\u4e2d\u79fb\u51fa\u3002\u5982\u679cdestination\u5df2\u7ecf\u5b58\u5728\u5143\u7d20\u5219\u4e0d\u4f1a\u5bf9destination\u505a\u4efb\u4f55\u64cd\u4f5c\u3002\u8be5\u547d\u4ee4\u662f\u539f\u5b50\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<li>\n<p>spop spop key\u968f\u673a\u5220\u9664\u5e76\u8fd4\u56de\u96c6\u5408\u4e2d\u7684\u4e00\u4e2a\u5143\u7d20<\/p>\n<\/li>\n<li>\n<p>srandmember srandmember key\u4e0espop\u4e00\u6837\uff0c\u53ea\u4e0d\u8fc7\u4e0d\u4f1a\u5c06\u5143\u7d20\u5220\u9664\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u4ece\u96c6\u5408\u4e2d\u968f\u673a\u51fa\u4e00\u4e2a\u5143\u7d20\u6765\u3002<\/p>\n<\/li>\n<li>\n<p>sinter \u6c42\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u96c6\u5408\u7684\u4ea4\u96c6<\/p>\n<\/li>\n<li>\n<p>sinterstore sinterstore destination key &nbsp;[&#8230;]\u4e0esinter\u7c7b\u4f3c\uff0c\u4f46\u662f\u4f1a\u5c06\u5f97\u51fa\u7684\u7ed3\u679c\u5b58\u5230destination\u4e2d\u3002<\/p>\n<\/li>\n<li>\n<p>sunion \u6c42\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u96c6\u5408\u7684\u5e76\u96c6<\/p>\n<\/li>\n<li>\n<p>sunionstore sunionstore destination key [&#8230;]<\/p>\n<\/li>\n<li>\n<p>sdiff \u6c42\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u96c6\u5408\u7684\u5dee\u96c6<\/p>\n<\/li>\n<li>\n<p>sdiffstore sdiffstore destination key &nbsp;[&#8230;]\u4e0esdiff\u7c7b\u4f3c\uff0c\u4f46\u662f\u4f1a\u5c06\u5f97\u51fa\u7684\u7ed3\u679c\u5b58\u5230destination\u4e2d\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>5.2 &nbsp;\u539f\u7406<\/strong><\/p>\n<p>\u6211\u4eec\u77e5\u9053Java\u4e2d\u7684Set\u6709\u591a\u79cd\u5b9e\u73b0\u3002\u5728Redis\u4e2d\u4e5f\u662f\uff0c\u6709IntSet\u548cHashTable\u4e24\u79cd\u5b9e\u73b0\uff0c\u9996\u5148\u521d\u59cb\u5316\u7684\u65f6\u5019\u4f7f\u7528\u7684\u662fIntSet\uff0c\u800c\u6ee1\u8db3\u5982\u4e0b\u7684\u6761\u4ef6\u65f6\uff0c\u5c31\u4f1a\u8f6c\u6362\u6210HashTable\u3002<\/p>\n<ul>\n<li>\n<p>\u5f53\u96c6\u5408\u4e2d\u4fdd\u5b58\u7684\u6240\u6709\u5143\u7d20\u90fd\u662f\u6574\u6570\u65f6<\/p>\n<\/li>\n<li>\n<p>\u96c6\u5408\u5bf9\u8c61\u4fdd\u5b58\u7684\u5143\u7d20\u6570\u91cf\u4e0d\u8d85\u8fc7512<\/p>\n<\/li>\n<\/ul>\n<p>\u4e0a\u9762\u5df2\u7ecf\u7b80\u5355\u7684\u4ecb\u7ecd\u4e86HashTable\u4e86\uff0c\u6240\u4ee5\u8fd9\u91cc\u53ea\u804a\u804aIntSet\u3002<\/p>\n<p><strong>5.2.1 IntSet<\/strong><\/p>\n<p>intset\u5e95\u5c42\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u65e2\u7136\u6570\u636e\u7ed3\u6784\u662f\u6570\u7ec4\uff0c\u90a3\u4e48\u5b58\u50a8\u6570\u636e\u5c31\u53ef\u4ee5\u662f\u6709\u5e8f\u7684\uff0c\u8fd9\u4e5f\u4f7f\u5f97intset\u7684\u5e95\u5c42\u67e5\u8be2\u662f\u901a\u8fc7\u4e8c\u5206\u67e5\u627e\u6765\u5b9e\u73b0\u3002\u5176\u7ed3\u6784\u5982\u4e0b\u3002<\/p>\n<\/p>\n<pre>struct&nbsp;intset&nbsp;{&nbsp;\r\n&nbsp;&nbsp;uint32_t&nbsp;encoding;&nbsp;\r\n&nbsp;&nbsp;uint32_t&nbsp;length;&nbsp;\r\n&nbsp;&nbsp;int8_t&nbsp;contents[];<\/pre>\n<\/p>\n<p>\u4e0eZipList\u7c7b\u4f3c\uff0cIntSet\u4e5f\u662f\u4f7f\u7528\u7684\u4e00\u8fde\u4e32\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u4f46\u662f\u4e0d\u540c\u7684\u662fZipList\u53ef\u4ee5\u5b58\u50a8\u4e8c\u8fdb\u5236\u7684\u5185\u5bb9\uff0c\u800cIntSet\u53ea\u80fd\u5b58\u50a8\u6574\u6570;\u4e14ZipList\u5b58\u50a8\u662f\u65e0\u5e8f\u7684\uff0cIntSet\u5219\u662f\u6709\u5e8f\u7684\uff0c\u8fd9\u6837\u4e00\u6765\uff0c\u5143\u7d20\u4e2a\u6570\u76f8\u540c\u7684\u524d\u63d0\u4e0b\uff0cIntSet\u7684\u67e5\u8be2\u6548\u7387\u4f1a\u66f4\u9ad8\u3002<\/p>\n<p><strong>6. Sorted<\/strong><\/p>\n<p>Set\u5176\u4e0eSet\u7684\u529f\u80fd\u5927\u81f4\u7c7b\u4f3c\uff0c\u53ea\u4e0d\u8fc7\u5728\u6b64\u57fa\u7840\u4e0a\uff0c\u53ef\u4ee5\u7ed9\u6bcf\u4e00\u4e2a\u5143\u7d20\u8d4b\u4e88\u4e00\u4e2a\u6743\u91cd\u3002\u4f60\u53ef\u4ee5\u7406\u89e3\u4e3aJava\u7684TreeSet\u3002\u4e0eList\u3001Hash\u3001Set\u4e00\u6837\uff0c\u5176\u5e95\u5c42\u7684\u5b9e\u73b0\u4e5f\u6709\u4e24\u79cd\uff0c\u5206\u522b\u662fZipList\u548cSkipList(\u8df3\u8868)\u3002<\/p>\n<p>\u521d\u59cb\u5316Sorted &nbsp;Set\u7684\u65f6\u5019\uff0c\u4f1a\u91c7\u7528ZipList\u4f5c\u4e3a\u5176\u5b9e\u73b0\uff0c\u5176\u5b9e\u5f88\u597d\u7406\u89e3\uff0c\u8fd9\u4e2a\u65f6\u5019\u5143\u7d20\u7684\u6570\u91cf\u5f88\u5c11\uff0c\u91c7\u7528ZipList\u8fdb\u884c\u7d27\u51d1\u7684\u5b58\u50a8\u4f1a\u66f4\u52a0\u7684\u8282\u7701\u7a7a\u95f4\u3002\u5f53\u671f\u8fbe\u5230\u5982\u4e0b\u7684\u6761\u4ef6\u65f6\uff0c\u5c31\u4f1a\u8f6c\u6362\u4e3aSkipList\uff1a<\/p>\n<ul>\n<li>\n<p>\u5176\u4fdd\u5b58\u7684\u5143\u7d20\u6570\u91cf\u7684\u4e2a\u6570\u5c0f\u4e8e128\u4e2a<\/p>\n<\/li>\n<li>\n<p>\u5176\u4fdd\u5b58\u7684\u6240\u6709\u5143\u7d20\u957f\u5ea6\u5c0f\u4e8e64\u5b57\u8282<\/p>\n<\/li>\n<\/ul>\n<p><strong>6.1 \u4f7f\u7528<\/strong><\/p>\n<p>\u4e0b\u9762\u7684\u547d\u4ee4\u4e2d\uff0ckey\u4ee3\u8868zset\u7684\u540d\u5b57;4\u4ee3\u8868score\uff0c\u4e5f\u5c31\u662f\u6743\u91cd;\u800cmember\u5c31\u662fzset\u4e2d\u7684key\u7684\u540d\u79f0\u3002<\/p>\n<ul>\n<li>\n<p>zadd zadd key 4 member\u7528\u4e8e\u589e\u52a0\u5143\u7d20<\/p>\n<\/li>\n<li>\n<p>zcard zcard key\u7528\u4e8e\u83b7\u53d6zset\u4e2d\u7684\u5143\u7d20\u7684\u6570\u91cf<\/p>\n<\/li>\n<li>\n<p>zrem zrem key member [&#8230;]\u5220\u9664zset\u4e2d\u4e00\u4e2a\u6216\u8005\u591a\u4e2akey<\/p>\n<\/li>\n<li>\n<p>zincrby zincrby key 1 member\u7ed9key\u7684\u6743\u91cd\u503c\u52a0\u4e0ascore\u7684\u503c(\u4e5f\u5c31\u662f1)<\/p>\n<\/li>\n<li>\n<p>zscore zscore key member\u7528\u4e8e\u83b7\u53d6\u6307\u5b9akey\u7684\u6743\u91cd\u503c<\/p>\n<\/li>\n<li>\n<p>zrange zrange key 0 -1\u83b7\u53d6zset\u4e2d\u6240\u6709\u7684\u5143\u7d20\uff0czrange key 0 -1 &nbsp;withscores\u83b7\u53d6\u6240\u6709\u5143\u7d20\u548c\u6743\u91cd\uff0cwithscores\u53c2\u6570\u7684\u4f5c\u7528\u662f\u51b3\u5b9a\u662f\u5426\u5c06\u6743\u91cd\u503c\u4e5f\u4e00\u8d77\u8fd4\u56de\u3002\u5176\u8fd4\u56de\u7684\u5143\u7d20\u6309\u7167\u4ece\u5c0f\u5230\u5927\u6392\u5e8f\uff0c\u5982\u679c\u5143\u7d20\u5177\u6709\u76f8\u540c\u7684\u6743\u91cd\uff0c\u5219\u4f1a\u6309\u7167\u5b57\u5178\u5e8f\u6392\u5e8f\u3002<\/p>\n<\/li>\n<li>\n<p>zrevrange zrevrange key 0 -1 withscores\uff0c\u5176\u4e0ezrange\u7c7b\u4f3c\uff0c\u53ea\u4e0d\u8fc7zrevrange\u6309\u7167\u4ece\u5927\u5230\u5c0f\u6392\u5e8f\u3002<\/p>\n<\/li>\n<li>\n<p>zrangebyscore zrangebyscore key 1 5\uff0c\u8fd4\u56dekey\u4e2d\u6743\u91cd\u5728\u533a\u95f4(1, 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&nbsp;\u4f60\u5728\u67d0\u4e2a\u7535\u5546APP\u4e2d\u4e0b\u8ba2\u5355\uff0c\u4f46\u662f\u6ca1\u6709\u4ed8\u6b3e\uff0c\u6b64\u65f6\u5b83\u4f1a\u63d0\u9192\u4f60\uff0c\u300c\u8ba2\u5355\u5982\u679c\u8d85\u8fc71\u4e2a\u5c0f\u65f6\u6ca1\u6709\u652f\u4ed8\uff0c\u5c06\u4f1a\u81ea\u52a8\u5173\u95ed\u300d;\u518d\u6bd4\u5982\u5728\u67d0\u4e2a\u6d3b\u52a8\u7ed3\u675f\u524d1\u4e2a\u5c0f\u65f6\u7ed9\u7528\u6237\u63a8\u9001\u6d88\u606f;\u518d\u6bd4\u5982\u8ba2\u5355\u5b8c\u6210\u540e\u591a\u5c11\u5929\u81ea\u52a8\u786e\u8ba4\u6536\u8d27\u7b49\u7b49\u3002<\/p>\n<p>\u7528\u4eba\u8bdd\u89e3\u91ca\u4e00\u904d\uff0c\u90a3\u5c31\u662f\u8fc7\u4f1a\u624d\u8981\u5e72\u7684\u4e8b\u60c5\u3002<\/p>\n<p>\u90a3ZSet\u600e\u4e48\u5b9e\u73b0\u8fd9\u4e2a\u529f\u80fd?<\/p>\n<p>\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u5c06\u4efb\u52a1\u7684\u6267\u884c\u65f6\u95f4\u8bbe\u7f6e\u4e3aZSet\u4e2d\u7684\u5143\u7d20\u6743\u91cd\uff0c\u7136\u540e\u901a\u8fc7\u4e00\u4e2a\u540e\u53f0\u7ebf\u7a0b\u5b9a\u65f6\u7684\u4eceZSet\u4e2d\u67e5\u8be2\u51fa\u6743\u91cd\u6700\u5c0f\u7684\u5143\u7d20\uff0c\u7136\u540e\u901a\u8fc7\u4e0e\u5f53\u524d\u65f6\u95f4\u6233\u5224\u65ad\uff0c\u5982\u679c\u5927\u4e8e\u5f53\u524d\u65f6\u95f4\u6233(\u4e5f\u5c31\u662f\u8be5\u6267\u884c\u4e86)\u5c31\u5c06\u5176\u4eceZSet\u4e2d\u53d6\u51fa\u3002<\/p>\n<p>\u90a3\uff0c\u600e\u4e48\u53d6?<\/p>\n<p>\u5176\u5b9e\u6211\u770b\u5f88\u591a\u8bb2Redis\u5b9e\u73b0\u5ef6\u8fdf\u961f\u5217\u7684\u535a\u5ba2\u90fd\u6ca1\u6709\u628a\u8fd9\u4e2a\u600e\u4e48\u53d6\u8bb2\u6e05\u695a\uff0c\u5230\u5e95\u8be5\u7528\u4ec0\u4e48\u547d\u4ee4\uff0c\u4f20\u4ec0\u4e48\u53c2\u6570\u3002\u6211\u4eec\u4f7f\u7528zrangebyscore\u547d\u4ee4\u6765\u5b9e\u73b0\uff0c\u8fd8\u8bb0\u5f97-inf\u548cinf\u5417\uff0c\u5176\u5168\u79f0\u662finfinity\uff0c\u5206\u522b\u8868\u793a\u65e0\u9650\u5c0f\u548c\u65e0\u9650\u5927\u3002<\/p>\n<p>\u7531\u4e8e\u6211\u4eec\u5e76\u4e0d\u77e5\u9053\u5ef6\u8fdf\u961f\u5217\u5f53\u4e2d\u7684score(\u4e5f\u5c31\u662f\u4efb\u52a1\u6267\u884c\u65f6\u95f4)\u7684\u8303\u56f4\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528-inf\u548cinf\uff0c\u5b8c\u6574\u547d\u4ee4\u5982\u4e0b\u3002<\/p>\n<\/p>\n<pre>zrangescore&nbsp;key&nbsp;-inf&nbsp;inf&nbsp;limt&nbsp;0&nbsp;1&nbsp;withscores<\/pre>\n<\/p>\n<p>\u8fd8\u662f\u6709\u70b9\u7528\uff0c\u90a3ZSet\u5e95\u5c42\u662f\u548b\u5b9e\u73b0\u7684\u5462?<\/p>\n<p>\u4e0a\u9762\u5df2\u7ecf\u8bb2\u8fc7\u4e86ZipList\uff0c\u5c31\u4e0d\u8d58\u8ff0\uff0c\u4e0b\u9762\u804a\u804aSkipList\u3002<\/p>\n<p><strong>6.2 \u539f\u7406<\/strong><\/p>\n<p><strong>6.2.1 SkipList<\/strong><\/p>\n<p>SkipList\u5b58\u5728\u4e8ezset(Sorted Set)\u7684\u7ed3\u6784\u4e2d\uff0c\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<pre>struct&nbsp;zset&nbsp;{&nbsp;\r\n&nbsp;&nbsp;dict&nbsp;*dict;&nbsp;\r\n&nbsp;&nbsp;zskiplist&nbsp;*zsl;<\/pre>\n<\/p>\n<p>\u800cSkipList\u7684\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<pre>struct&nbsp;zskiplist&nbsp;{&nbsp;\r\n&nbsp;&nbsp;struct&nbsp;zskiplistNode&nbsp;*header,&nbsp;*tail;&nbsp;\r\n&nbsp;&nbsp;unsigned&nbsp;long&nbsp;length;&nbsp;\r\n&nbsp;&nbsp;int&nbsp;level;<\/pre>\n<\/p>\n<p>\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u6709\u60f3\u8fc7\uff0c\u4e3a\u4ec0\u4e48Redis\u8981\u4f7f\u7528SkipList\u6765\u5b9e\u73b0ZSet\uff0c\u800c\u4e0d\u7528\u6570\u7ec4\u5462?<\/p>\n<p>\u9996\u5148ZSet\u5982\u679c\u6570\u7ec4\u5b58\u50a8\u7684\u8bdd\uff0c\u7531\u4e8eZSet\u4e2d\u5b58\u50a8\u7684\u5143\u7d20\u662f\u6709\u5e8f\u7684\uff0c\u5b58\u5165\u7684\u65f6\u5019\u9700\u8981\u5c06\u5143\u7d20\u653e\u5165\u6570\u7ec4\u4e2d\u5bf9\u5e94\u7684\u4f4d\u7f6e\u3002\u8fd9\u6837\u5c31\u4f1a\u5bf9\u6570\u7ec4\u8fdb\u884c\u9891\u7e41\u7684\u589e\u5220\uff0c\u800c\u9891\u7e41\u7684\u589e\u5220\u5728\u6570\u7ec4\u4e2d\u6548\u7387\u5e76\u4e0d\u9ad8\uff0c\u56e0\u4e3a\u6d89\u53ca\u5230\u6570\u7ec4\u5143\u7d20\u7684\u79fb\u52a8\uff0c\u5982\u679c\u5143\u7d20\u63d2\u5165\u7684\u4f4d\u7f6e\u662f\u9996\u4f4d\uff0c\u90a3\u4e48\u540e\u9762\u7684\u6240\u6709\u5143\u7d20\u90fd\u8981\u88ab\u79fb\u52a8\u3002<\/p>\n<p>\u6240\u4ee5\u4e3a\u4e86\u5e94\u4ed8\u9891\u7e41\u589e\u5220\u7684\u573a\u666f\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u5230\u94fe\u8868\u3002\u4f46\u662f\u968f\u7740\u94fe\u8868\u7684\u5143\u7d20\u589e\u591a\uff0c\u540c\u6837\u7684\u4f1a\u51fa\u73b0\u95ee\u9898\uff0c\u867d\u7136\u589e\u5220\u7684\u6548\u7387\u63d0\u5347\u4e86\uff0c\u4f46\u662f\u67e5\u8be2\u7684\u6548\u7387\u53d8\u4f4e\u4e86\uff0c\u56e0\u4e3a\u67e5\u8be2\u5143\u7d20\u4f1a\u4ece\u5934\u5230\u5c3e\u7684\u904d\u5386\u94fe\u8868\u3002\u6240\u6709\u5982\u679c\u6709\u4ec0\u4e48\u65b9\u6cd5\u80fd\u591f\u63d0\u5347\u94fe\u8868\u7684\u67e5\u8be2\u6548\u7387\u5c31\u597d\u4e86\u3002<\/p>\n<p>\u4e8e\u662f\u8df3\u8868\u5c31\u8bde\u751f\u4e86\u3002\u57fa\u4e8e\u5355\u94fe\u8868\uff0c\u4ece\u7b2c\u4e00\u4e2a\u8282\u70b9\u5f00\u59cb\uff0c\u6bcf\u9694\u4e00\u4e2a\u8282\u70b9\uff0c\u5efa\u7acb\u7d22\u5f15\u3002\u5176\u5b9e\u4e5f\u662f\u5355\u94fe\u8868\u3002\u53ea\u4e0d\u662f\u4e2d\u95f4\u7701\u7565\u4e86\u8282\u70b9\u3002<\/p>\n<p>\u4f8b\u5982\u5b58\u5728\u4e2a\u5355\u94fe\u8868 1 3 4 5 7 8 9 10 13 16 17 18<\/p>\n<p>\u62bd\u8c61\u4e4b\u540e\u7684\u7d22\u5f15\u4e3a 1 4 7 9 13 17<\/p>\n<p>\u5982\u679c\u8981\u67e5\u8be216\u53ea\u9700\u8981\u5728\u7d22\u5f15\u5c42\u904d\u5386\u523013\uff0c\u7136\u540e\u6839\u636e13\u5b58\u50a8\u7684\u4e0b\u5c42\u8282\u70b9(\u771f\u5b9e\u94fe\u8868\u8282\u70b9\u7684\u5730\u5740)\uff0c\u6b64\u65f6\u53ea\u9700\u8981\u518d\u904d\u5386\u4e24\u4e2a\u8282\u70b9\u5c31\u53ef\u4ee5\u627e\u5230\u503c\u4e3a16\u7684\u8282\u70b9\u3002<\/p>\n<p>\u6240\u4ee5\u53ef\u4ee5\u91cd\u65b0\u7ed9\u8df3\u8868\u4e0b\u4e00\u4e2a\u5b9a\u4e49\uff0c\u94fe\u8868\u52a0\u591a\u7ea7\u7d22\u5f15\u7684\u7ed3\u6784\uff0c\u5c31\u662f\u8df3\u8868<\/p>\n<p>\u5728\u8df3\u8868\u4e2d\uff0c\u67e5\u8be2\u4efb\u610f\u6570\u636e\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u662fO(logn)\u3002\u65f6\u95f4\u590d\u6742\u5ea6\u8ddf\u4e8c\u5206\u67e5\u627e\u662f\u4e00\u6837\u7684\u3002\u53ef\u4ee5\u6362\u53e5\u8bdd\u8bf4\uff0c\u7528\u5355\u94fe\u8868\u5b9e\u73b0\u4e86\u4e8c\u5206\u67e5\u627e\u3002\u4f46\u8fd9\u4e5f\u662f\u4e00\u79cd\u7528\u7a7a\u95f4\u6362\u65f6\u95f4\u7684\u601d\u8def\uff0c\u5e76\u4e0d\u662f\u514d\u8d39\u7684\u3002<\/p>\n<p><strong>End<\/strong><\/p>\n<p>\u5173\u4e8eRedis\u7684\u57fa\u7840\u6570\u636e\u7ed3\u6784\u548c\u5176\u5e95\u5c42\u7684\u539f\u7406\u5c31\u7b80\u5355\u7684\u804a\u5230\u8fd9\u91cc\uff0c\u4e4b\u540e\u7684\u51e0\u7bc7\u5e94\u8be5\u4f1a\u804a\u804aRedis\u7684\u9ad8\u53ef\u7528\u548c\u5176\u5bf9\u5e94\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u611f\u5174\u8da3\u7684\u53ef\u4ee5\u6301\u7eed\u5173\u6ce8\uff0c\u516c\u4f17\u53f7\u4f1a\u6bd4\u5176\u4ed6\u7684\u5e73\u53f0\u90fd\u5148\u66f4\u65b0\u3002<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis\u57fa\u7840\u4e4b\u5206\u6790\u57fa\u7840\u6570\u636e\u7ed3\u6784&#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-201637","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201637","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=201637"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201637\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}