{"id":4431,"date":"2019-07-18T11:14:32","date_gmt":"2019-07-18T03:14:32","guid":{"rendered":"https:\/\/www.xttblog.com\/?p=4431"},"modified":"2019-07-18T11:14:32","modified_gmt":"2019-07-18T03:14:32","slug":"%e9%ab%98%e9%a2%91%e7%8e%87%e7%9a%84redis%e9%9d%a2%e8%af%95%e9%a2%98%e5%88%86%e4%ba%ab","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=4431","title":{"rendered":"\u9ad8\u9891\u7387\u7684Redis\u9762\u8bd5\u9898\u5206\u4eab"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Redis \u672c\u8d28\u4e0a\u662f\u4e00\u4e2a Key-Value \u7c7b\u578b\u7684\u5185\u5b58\u6570\u636e\u5e93\uff0c\u7531\u4e8e\u5b83\u6709\u4e30\u5bcc\u7684\u6570\u636e\u7ed3\u6784\u7b49\u7279\u70b9\uff0c\u5bfc\u81f4\u4e86\u4f7f\u7528\u5b83\u7684\u901f\u5ea6\uff0c\u8fdc\u8fdc\u7684\u8d85\u8fc7\u4e86 Memcached\u3002\u4e8e\u662f\u4e4e\uff0c\u73b0\u5728\u9762\u8bd5\u95ee Memcached \u7684\u5f88\u5c11\uff0c\u95ee Redis \u7684\u5219\u975e\u5e38\u7684\u591a\u3002\u4eca\u5929\u62bd\u4e2a\u65f6\u95f4\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u4e00\u4e9b\u5e38\u89c1\u7684\uff0c\u9ad8\u9891\u7387\u7684 Redis \u9762\u8bd5\u9898\u3002\u5e0c\u671b\u80fd\u591f\u5bf9\u6240\u6709\u8bfb\u8005\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcly1g53tjpvw7gj21980kcnja.jpg\" alt=\"\" \/><figcaption>Redis \u9ad8\u9891\u9762\u8bd5\u9898<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001Redis \u662f\u4ec0\u4e48\uff1f\u5b83\u7684\u4f18\u7f3a\u70b9\u6709\u54ea\u4e9b\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u662f\u4e00\u4e2a key-value \u5b58\u50a8\u7cfb\u7edf\u3002\u548c Memcached \u7c7b\u4f3c\uff0c\u5b83\u652f\u6301\u5b58\u50a8\u7684 value \u7c7b\u578b\u76f8\u5bf9\u66f4\u591a\uff0c\u5305\u62ec string(\u5b57\u7b26\u4e32)\u3001list(\u94fe\u8868)\u3001set(\u96c6\u5408)\u3001zset(sorted set &#8211;\u6709\u5e8f\u96c6\u5408)\u548c hash\uff08\u54c8\u5e0c\u7c7b\u578b\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e9b\u6570\u636e\u7c7b\u578b\u90fd\u652f\u6301 push\/pop\u3001add\/remove \u53ca\u53d6\u4ea4\u96c6\u5e76\u96c6\u548c\u5dee\u96c6\u53ca\u66f4\u4e30\u5bcc\u7684\u64cd\u4f5c\uff0c\u800c\u4e14\u8fd9\u4e9b\u64cd\u4f5c\u90fd\u662f\u539f\u5b50\u6027\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6b64\u57fa\u7840\u4e0a\uff0cRedis \u652f\u6301\u5404\u79cd\u4e0d\u540c\u65b9\u5f0f\u7684\u6392\u5e8f\u3002\u4e0e Memcached \u4e00\u6837\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6548\u7387\uff0c\u6570\u636e\u90fd\u662f\u7f13\u5b58\u5728\u5185\u5b58\u4e2d\u3002\u533a\u522b\u7684\u662f Redis \u4f1a\u5468\u671f\u6027\u7684\u628a\u66f4\u65b0\u7684\u6570\u636e\u5199\u5165\u78c1\u76d8\u6216\u8005\u628a\u4fee\u6539\u64cd\u4f5c\u5199\u5165\u8ffd\u52a0\u7684\u8bb0\u5f55\u6587\u4ef6\uff0c\u5e76\u4e14\u5728\u6b64\u57fa\u7840\u4e0a\u5b9e\u73b0\u4e86 Master-Slave(\u4e3b\u4ece)\u540c\u6b65\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684 key-value \u6570\u636e\u5e93\u3002 Redis \u7684\u51fa\u73b0\uff0c\u5f88\u5927\u7a0b\u5ea6\u8865\u507f\u4e86 Memcached \u8fd9\u7c7b key\/value \u5b58\u50a8\u7684\u4e0d\u8db3\uff0c\u5728\u90e8 \u5206\u573a\u5408\u53ef\u4ee5\u5bf9\u5173\u7cfb\u6570\u636e\u5e93\u8d77\u5230\u5f88\u597d\u7684\u8865\u5145\u4f5c\u7528\u3002\u5b83\u63d0\u4f9b\u4e86Java\uff0cC\/C++\uff0cC#\uff0cPHP\uff0cJavaScript\uff0cPerl\uff0cObject-C\uff0cPython\uff0cRuby\uff0cErlang\u7b49\u5ba2\u6237\u7aef\uff0c\u4f7f\u7528\u5f88\u65b9\u4fbf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3a\u662f\u7eaf\u5185\u5b58\u64cd\u4f5c\uff0cRedis \u7684\u6027\u80fd\u975e\u5e38\u51fa\u8272\uff0c\u6bcf\u79d2\u53ef\u4ee5\u5904\u7406\u8d85\u8fc7 10 \u4e07\u6b21\u8bfb\u5199\u64cd\u4f5c\uff0c\u662f\u5df2\u77e5\u6027\u80fd\u6700\u5feb\u7684 Key-Value DB\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u7684\u51fa\u8272\u4e4b\u5904\u4e0d\u4ec5\u4ec5\u662f\u6027\u80fd\uff0cRedis \u6700\u5927\u7684\u9b45\u529b\u662f\u652f\u6301\u4fdd\u5b58\u591a\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u6b64\u5916\u5355\u4e2a value \u80fd\u5b58\u975e\u5e38\u591a\u7684\u6570\u636e\uff0c\u4e0d\u50cf memcached \u53ea\u80fd\u4fdd\u5b58 1MB \u7684\u6570\u636e\uff0c\u56e0\u6b64 Redis \u53ef\u4ee5\u7528\u6765\u5b9e\u73b0\u5f88\u591a\u6709\u7528\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bd4\u65b9\u8bf4\u7528\u4ed6\u7684 List \u6765\u505a FIFO \u53cc\u5411\u94fe\u8868\uff0c\u5b9e\u73b0\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u9ad8\u6027 \u80fd\u6d88\u606f\u961f\u5217\u670d\u52a1\uff0c\u7528\u4ed6\u7684 Set \u53ef\u4ee5\u505a\u9ad8\u6027\u80fd\u7684 tag \u7cfb\u7edf\u7b49\u7b49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53e6\u5916 Redis \u4e5f\u53ef\u4ee5\u5bf9\u5b58\u5165\u7684 Key-Value \u8bbe\u7f6e expire \u65f6\u95f4\uff0c\u56e0\u6b64\u4e5f\u53ef\u4ee5\u88ab\u5f53\u4f5c\u4e00 \u4e2a\u529f\u80fd\u52a0\u5f3a\u7248\u7684 Memcached \u6765\u7528\u3002 Redis \u7684\u4e3b\u8981\u7f3a\u70b9\u662f\u6570\u636e\u5e93\u5bb9\u91cf\u53d7\u5230\u7269\u7406\u5185\u5b58\u7684\u9650\u5236\uff0c\u4e0d\u80fd\u7528\u4f5c\u6d77\u91cf\u6570\u636e\u7684\u9ad8\u6027\u80fd\u8bfb\u5199\uff0c\u56e0\u6b64 Redis \u9002\u5408\u7684\u573a\u666f\u4e3b\u8981\u5c40\u9650\u5728\u8f83\u5c0f\u6570\u636e\u91cf\u7684\u9ad8\u6027\u80fd\u64cd\u4f5c\u548c\u8fd0\u7b97\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u652f\u6301\u4e3b\u4ece\u540c\u6b65\u3002\u6570\u636e\u53ef\u4ee5\u4ece\u4e3b\u670d\u52a1\u5668\u5411\u4efb\u610f\u6570\u91cf\u7684\u4ece\u670d\u52a1\u5668\u4e0a\u540c\u6b65\uff0c\u4ece\u670d\u52a1\u5668\u53ef\u4ee5\u662f\u5173\u8054\u5176\u4ed6\u4ece\u670d\u52a1\u5668\u7684\u4e3b\u670d\u52a1\u5668\u3002\u8fd9\u4f7f\u5f97 Redis \u53ef\u6267\u884c\u5355\u5c42\u6811\u590d\u5236\u3002\u5b58\u76d8\u53ef\u4ee5\u6709\u610f\u65e0\u610f\u7684\u5bf9\u6570\u636e\u8fdb\u884c\u5199\u64cd\u4f5c\u3002\u7531\u4e8e\u5b8c\u5168\u5b9e\u73b0\u4e86\u53d1\u5e03\/\u8ba2\u9605\u673a\u5236\uff0c\u4f7f\u5f97\u4ece\u6570\u636e\u5e93\u5728\u4efb\u4f55\u5730\u65b9\u540c\u6b65\u6811\u65f6\uff0c\u53ef\u8ba2\u9605\u4e00\u4e2a\u9891\u9053\u5e76\u63a5\u6536\u4e3b\u670d\u52a1\u5668\u5b8c\u6574\u7684\u6d88\u606f\u53d1\u5e03\u8bb0\u5f55\u3002\u540c\u6b65\u5bf9\u8bfb\u53d6\u64cd\u4f5c\u7684\u53ef\u6269\u5c55\u6027\u548c\u6570\u636e\u5197\u4f59\u5f88\u6709\u5e2e\u52a9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001Redis \u76f8\u6bd4 memcached \u6709\u54ea\u4e9b\u4f18\u52bf\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Memcached \u6240\u6709\u7684\u503c\u5747\u662f\u7b80\u5355\u7684\u5b57\u7b26\u4e32\uff0cRedis \u4f5c\u4e3a\u5176\u66ff\u4ee3\u8005\uff0c\u652f\u6301\u66f4\u4e3a\u4e30\u5bcc\u7684\u6570\u636e\u7c7b\u578b\uff1bRedis \u7684\u901f\u5ea6\u6bd4 Memcached \u8981\u5feb\uff1bRedis \u53ef\u4ee5\u6301\u4e45\u5316\u5176\u6570\u636e\uff0c\u5176\u4ed6\u7684\u6709\u70b9\u5728\u4e0a\u9762\u7684\u7b2c\u4e00\u9898\u4e2d\u4e5f\u6709\u63d0\u53ca\uff0c\u6211\u5c31\u4e0d\u5728\u91cd\u590d\u5199\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001Redis \u652f\u6301\u7684\u6570\u636e\u7ed3\u6784\u6709\u54ea\u4e9b\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b57\u7b26\u4e32 String\u3001\u5b57\u5178 Hash\u3001\u5217\u8868 List\u3001\u96c6\u5408 Set\u3001\u6709\u5e8f\u96c6\u5408 SortedSet\u3002\u5269\u4e0b\u7684\u5982\uff1aHyperLogLog\u3001Geo\u3001Pub\/Sub\u3001Redis Module\uff0cBloomFilter\uff0cRedisSearch\uff0cRedis-ML \u4e5f\u90fd\u53ef\u4ee5\u8bb2\u4e00\u8bb2\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4\u3001Redis \u7684\u5168\u79f0\u662f\u4ec0\u4e48\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Remote Dictionary Server\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5\u3001\u8bf4\u8bf4 Redis \u5206\u5e03\u5f0f\u9501\u7684\u4f7f\u7528\u8fc7\u7a0b\u662f\u600e\u6837\u7684\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u62ff setnx \u6765\u4e89\u62a2\u9501\uff0c\u62a2\u5230\u4e4b\u540e\uff0c\u518d\u7528 expire \u7ed9\u9501\u52a0\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\u9632\u6b62\u9501\u5fd8\u8bb0\u4e86\u91ca\u653e\u3002\u4f46\u662f\u8fd9\u4e2a\u8fc7\u7a0b\u6709\u4e00\u4e2a\u81f4\u547d\u7684\u95ee\u9898\uff0c\u5982\u679c\u5728 setnx \u4e4b\u540e\u6267\u884c expire \u4e4b\u524d\u8fdb\u7a0b\u610f\u5916 crash \u6216\u8005\u8981\u91cd\u542f\u7ef4\u62a4\u4e86\u3002\u90a3\u8fd9\u4e2a\u9501\u5c31\u6c38\u8fdc\u5f97\u4e0d\u5230\u91ca\u653e\u4e86\u3002\u6240\u4ee5\uff0c\u5e94\u8be5\u540c\u65f6\u628a setnx \u548c expire \u5408\u6210\u4e00\u6761\u6307\u4ee4\u6765\u4f7f\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">6\u3001\u8bf4\u8bf4 Redis \u7684\u51e0\u79cd\u6570\u636e\u6dd8\u6c70\u7b56\u7565\uff1f<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>noeviction\uff1a\u7981\u6b62\u6dd8\u6c70\u6570\u636e\u3002<\/li><li>allkeys-lru: \u5c1d\u8bd5\u56de\u6536\u6700\u5c11\u4f7f\u7528\u7684\u952e\uff08LRU\uff09\uff0c\u4f7f\u5f97\u65b0\u6dfb\u52a0\u7684\u6570\u636e\u6709\u7a7a\u95f4\u5b58\u653e\u3002<\/li><li>volatile-lru: \u5c1d\u8bd5\u56de\u6536\u6700\u5c11\u4f7f\u7528\u7684\u952e\uff08LRU\uff09\uff0c\u4f46\u4ec5\u9650\u4e8e\u5728\u8fc7\u671f\u96c6\u5408\u7684\u952e,\u4f7f\u5f97\u65b0\u6dfb\u52a0\u7684\u6570\u636e\u6709\u7a7a\u95f4\u5b58\u653e\u3002<\/li><li>allkeys-random: \u56de\u6536\u968f\u673a\u7684\u952e\u4f7f\u5f97\u65b0\u6dfb\u52a0\u7684\u6570\u636e\u6709\u7a7a\u95f4\u5b58\u653e\u3002<\/li><li>volatile-random: \u56de\u6536\u968f\u673a\u7684\u952e\u4f7f\u5f97\u65b0\u6dfb\u52a0\u7684\u6570\u636e\u6709\u7a7a\u95f4\u5b58\u653e\uff0c\u4f46\u4ec5\u9650\u4e8e\u5728\u8fc7\u671f\u96c6\u5408\u7684\u952e\u3002<\/li><li>volatile-ttl: \u56de\u6536\u5728\u8fc7\u671f\u96c6\u5408\u7684\u952e\uff0c\u5e76\u4e14\u4f18\u5148\u56de\u6536\u5b58\u6d3b\u65f6\u95f4\uff08TTL\uff09\u8f83\u77ed\u7684\u952e,\u4f7f\u5f97\u65b0\u6dfb\u52a0\u7684\u6570\u636e\u6709\u7a7a\u95f4\u5b58\u653e\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">7\u3001Redis \u5b98\u65b9\u4e3a\u4ec0\u4e48\u4e0d\u63d0\u4f9b Windows \u7248\u672c\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3a\u76ee\u524d Linux \u7248\u672c\u5df2\u7ecf\u76f8\u5f53\u7a33\u5b9a\uff0c\u800c\u4e14\u7528\u6237\u91cf\u5f88\u5927\uff0c\u5f00\u53d1 windows \u7248\u672c\uff0c\u53cd\u800c\u4f1a\u5e26\u6765\u517c\u5bb9\u6027\u7b49\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">8\u3001\u5982\u4f55\u627e\u51fa\u4ee5\u67d0\u4e2a\u56fa\u5b9a\u7684\u5df2\u77e5\u7684\u524d\u7f00\u5f00\u5934\u7684 key\uff1f\u6bd4\u5982\uff0c10 \u4ebf\u4e2a\u91cc\u9762\u627e\u51fa 10w \u4e2a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 keys \u6307\u4ee4\u53ef\u4ee5\u626b\u51fa\u6307\u5b9a\u6a21\u5f0f\u7684 key \u5217\u8868\u3002\u4f46\u662f\u5728\u7ebf\u4e0a\uff0c\u8fd9\u4e2a\u547d\u4ee4\u4e00\u822c\u4f1a\u88ab\u7981\u6b62\u4e86\u3002\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u963b\u585e\u547d\u4ee4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\uff0c\u63a8\u8350\u4f7f\u7528 scan \u6307\u4ee4\uff0cscan \u6307\u4ee4\u53ef\u4ee5\u65e0\u963b\u585e\u7684\u63d0\u53d6\u51fa\u6307\u5b9a\u6a21\u5f0f\u7684 key \u5217\u8868\uff0c\u4f46\u662f\u4f1a\u6709\u4e00\u5b9a\u7684\u91cd\u590d\u6982\u7387\uff0c\u5728\u5ba2\u6237\u7aef\u505a\u4e00\u6b21\u53bb\u91cd\u5c31\u53ef\u4ee5\u4e86\uff0c\u4f46\u662f\u6574\u4f53\u6240\u82b1\u8d39\u7684\u65f6\u95f4\u4f1a\u6bd4\u76f4\u63a5\u7528 keys \u6307\u4ee4\u957f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">9\u3001\u4e00\u4e2a\u5b57\u7b26\u4e32\u7c7b\u578b\u7684\u503c\u80fd\u5b58\u50a8\u6700\u5927\u5bb9\u91cf\u662f\u591a\u5c11\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">512M<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">10\u3001\u5982\u679c\u6709\u5927\u91cf\u7684 key \u9700\u8981\u8bbe\u7f6e\u540c\u4e00\u65f6\u95f4\u8fc7\u671f\uff0c\u4e00\u822c\u9700\u8981\u6ce8\u610f\u4ec0\u4e48\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u5927\u91cf\u7684 Key \u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u7684\u8fc7\u4e8e\u96c6\u4e2d\uff0c\u5230\u8fc7\u671f\u7684\u90a3\u4e2a\u65f6\u95f4\u70b9\uff0cRedis \u53ef\u80fd\u4f1a\u51fa\u73b0\u77ed\u6682\u7684\u5361\u987f\u73b0\u8c61\u3002\u4e00\u822c\u9700\u8981\u5728\u65f6\u95f4\u4e0a\u52a0\u4e00\u4e2a\u968f\u673a\u503c\uff0c\u4f7f\u5f97\u8fc7\u671f\u65f6\u95f4\u5206\u6563\u4e00\u4e9b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">11\u3001Redis \u96c6\u7fa4\u65b9\u6848\u5e94\u8be5\u600e\u4e48\u505a\uff1f\u90fd\u6709\u54ea\u4e9b\u65b9\u6848\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">codis \u662f\u5f00\u6e90\u7684\uff0c\u76ee\u524d\u7528\u7684\u6700\u591a\u7684\u96c6\u7fa4\u65b9\u6848\uff0c\u57fa\u672c\u548c twemproxy \u4e00\u81f4\u7684\u6548\u679c\uff0c\u4f46\u5b83\u652f\u6301\u5728\u8282\u70b9\u6570\u91cf\u6539\u53d8\u60c5\u51b5\u4e0b\uff0c\u65e7\u8282\u70b9\u6570\u636e\u53ef\u6062\u590d\u5230\u65b0 hash \u8282\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">redis cluster 3.0 \u81ea\u5e26\u7684\u96c6\u7fa4\uff0c\u7279\u70b9\u5728\u4e8e\u4ed6\u7684\u5206\u5e03\u5f0f\u7b97\u6cd5\u4e0d\u662f\u4e00\u81f4\u6027 hash\uff0c\u800c\u662f hash \u69fd\u7684\u6982\u5ff5\uff0c\u4ee5\u53ca\u81ea\u8eab\u652f\u6301\u8282\u70b9\u8bbe\u7f6e\u4ece\u8282\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4e1a\u52a1\u4ee3\u7801\u5c42\u5b9e\u73b0\uff0c\u8d77\u51e0\u4e2a\u6beb\u65e0\u5173\u8054\u7684 redis \u5b9e\u4f8b\uff0c\u5728\u4ee3\u7801\u5c42\uff0c\u5bf9 key \u8fdb\u884c hash \u8ba1\u7b97\uff0c\u7136\u540e\u53bb\u5bf9\u5e94\u7684 redis \u5b9e\u4f8b\u64cd\u4f5c\u6570\u636e\u3002 \u8fd9\u79cd\u65b9\u5f0f\u5bf9 hash \u5c42\u4ee3\u7801\u8981\u6c42\u6bd4\u8f83\u9ad8\uff0c\u8003\u8651\u90e8\u5206\u5305\u62ec\uff0c\u8282\u70b9\u5931\u6548\u540e\u7684\u66ff\u4ee3\u7b97\u6cd5\u65b9\u6848\uff0c\u6570\u636e\u9707\u8361\u540e\u7684\u81ea\u52a8\u811a\u672c\u6062\u590d\uff0c\u5b9e\u4f8b\u7684\u76d1\u63a7\u7b49\u7b49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">12\u3001bgsave \u505a\u955c\u50cf\u5168\u91cf\u6301\u4e45\u5316\u7684\u539f\u7406\u662f\u4ec0\u4e48\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">fork \u548c cow\u3002fork \u662f\u6307 redis \u901a\u8fc7\u521b\u5efa\u5b50\u8fdb\u7a0b\u6765\u8fdb\u884c bgsave \u64cd\u4f5c\uff0ccow \u6307\u7684\u662f copy on write\uff0c\u5b50\u8fdb\u7a0b\u521b\u5efa\u540e\uff0c\u7236\u5b50\u8fdb\u7a0b\u5171\u4eab\u6570\u636e\u6bb5\uff0c\u7236\u8fdb\u7a0b\u7ee7\u7eed\u63d0\u4f9b\u8bfb\u5199\u670d\u52a1\uff0c\u5199\u810f\u7684\u9875\u9762\u6570\u636e\u4f1a\u9010\u6e10\u548c\u5b50\u8fdb\u7a0b\u5206\u79bb\u5f00\u6765\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">13\u3001Pipeline \u6709\u4ec0\u4e48\u597d\u5904\uff0c\u4e3a\u4ec0\u4e48\u8981\u7528 pipeline\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u5c06\u591a\u6b21 IO \u5f80\u8fd4\u7684\u65f6\u95f4\u7f29\u51cf\u4e3a\u4e00\u6b21\uff0c\u524d\u63d0\u662f pipeline \u6267\u884c\u7684\u6307\u4ee4\u4e4b\u95f4\u6ca1\u6709\u56e0\u679c\u76f8\u5173\u6027\u3002\u4f7f\u7528 redis-benchmark \u8fdb\u884c\u538b\u6d4b\u7684\u65f6\u5019\u53ef\u4ee5\u53d1\u73b0\u5f71\u54cd redis \u7684 QPS \u5cf0\u503c\u7684\u4e00\u4e2a\u91cd\u8981\u56e0\u7d20\u662f pipeline \u6279\u6b21\u6307\u4ee4\u7684\u6570\u76ee\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">14\u3001Redis \u7684\u540c\u6b65\u673a\u5236\u4e86\u89e3\u4e48\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u53ef\u4ee5\u4f7f\u7528\u4e3b\u4ece\u540c\u6b65\uff0c\u4ece\u4ece\u540c\u6b65\u3002\u7b2c\u4e00\u6b21\u540c\u6b65\u65f6\uff0c\u4e3b\u8282\u70b9\u505a\u4e00\u6b21 bgsave\uff0c\u5e76\u540c\u65f6\u5c06\u540e\u7eed\u4fee\u6539\u64cd\u4f5c\u8bb0\u5f55\u5230\u5185\u5b58 buffer\uff0c\u5f85\u5b8c\u6210\u540e\u5c06 rdb \u6587\u4ef6\u5168\u91cf\u540c\u6b65\u5230\u590d\u5236\u8282\u70b9\uff0c\u590d\u5236\u8282\u70b9\u63a5\u53d7\u5b8c\u6210\u540e\u5c06 rdb \u955c\u50cf\u52a0\u8f7d\u5230\u5185\u5b58\u3002\u52a0\u8f7d\u5b8c\u6210\u540e\uff0c\u518d\u901a\u77e5\u4e3b\u8282\u70b9\u5c06\u671f\u95f4\u4fee\u6539\u7684\u64cd\u4f5c\u8bb0\u5f55\u540c\u6b65\u5230\u590d\u5236\u8282\u70b9\u8fdb\u884c\u91cd\u653e\u5c31\u5b8c\u6210\u4e86\u540c\u6b65\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">15\u3001\u662f\u5426\u4f7f\u7528\u8fc7 Redis \u96c6\u7fa4\uff0c\u96c6\u7fa4\u7684\u539f\u7406\u662f\u4ec0\u4e48\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis Sentinal \u7740\u773c\u4e8e\u9ad8\u53ef\u7528\uff0c\u5728 master \u5b95\u673a\u65f6\u4f1a\u81ea\u52a8\u5c06 slave \u63d0\u5347\u4e3a master\uff0c\u7ee7\u7eed\u63d0\u4f9b\u670d\u52a1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis Cluster \u7740\u773c\u4e8e\u6269\u5c55\u6027\uff0c\u5728\u5355\u4e2a redis \u5185\u5b58\u4e0d\u8db3\u65f6\uff0c\u4f7f\u7528 Cluster \u8fdb\u884c\u5206\u7247\u5b58\u50a8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">16\u3001Jedis \u4e0e Redisson \u5bf9\u6bd4\u6709\u4ec0\u4e48\u4f18\u7f3a\u70b9\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jedis \u662f Redis \u7684 Java \u5b9e\u73b0\u7684\u5ba2\u6237\u7aef\uff0c\u5176 API \u63d0\u4f9b\u4e86\u6bd4\u8f83\u5168\u9762\u7684 Redis \u547d\u4ee4\u7684\u652f\u6301\uff1b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redisson \u5b9e\u73b0\u4e86\u5206\u5e03\u5f0f\u548c\u53ef\u6269\u5c55\u7684 Java \u6570\u636e\u7ed3\u6784\uff0c\u548c Jedis \u76f8\u6bd4\uff0c\u529f\u80fd\u8f83\u4e3a\u7b80\u5355\uff0c\u4e0d\u652f\u6301\u5b57\u7b26\u4e32\u64cd\u4f5c\uff0c\u4e0d\u652f\u6301\u6392\u5e8f\u3001\u4e8b\u52a1\u3001\u7ba1\u9053\u3001\u5206\u533a\u7b49 Redis \u7279\u6027\u3002Redisson \u7684\u5b97\u65e8\u662f\u4fc3\u8fdb\u4f7f\u7528\u8005\u5bf9 Redis \u7684\u5173\u6ce8\u5206\u79bb\uff0c\u4ece\u800c\u8ba9\u4f7f\u7528\u8005\u80fd\u591f\u5c06\u7cbe\u529b\u66f4\u96c6\u4e2d\u5730\u653e\u5728\u5904\u7406\u4e1a\u52a1\u903b\u8f91\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">17\u3001\u8bf4\u8bf4 Redis \u54c8\u5e0c\u69fd\u7684\u6982\u5ff5\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u96c6\u7fa4\u6ca1\u6709\u4f7f\u7528\u4e00\u81f4\u6027 hash,\u800c\u662f\u5f15\u5165\u4e86\u54c8\u5e0c\u69fd\u7684\u6982\u5ff5\uff0cRedis \u96c6\u7fa4\u6709 16384 \u4e2a\u54c8\u5e0c\u69fd\uff0c\u6bcf\u4e2a key \u901a\u8fc7 CRC16 \u6821\u9a8c\u540e\u5bf9 16384 \u53d6\u6a21\u6765\u51b3\u5b9a\u653e\u7f6e\u54ea\u4e2a\u69fd\uff0c\u96c6\u7fa4\u7684\u6bcf\u4e2a\u8282\u70b9\u8d1f\u8d23\u4e00\u90e8\u5206 hash \u69fd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">18\u3001Redis \u96c6\u7fa4\u4f1a\u6709\u5199\u64cd\u4f5c\u4e22\u5931\u5417\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u6570\u636e\u7684\u5f3a\u4e00\u81f4\u6027\uff0c\u8fd9\u610f\u5473\u8fd9\u5728\u5b9e\u9645\u4e2d\u96c6\u7fa4\u5728\u7279\u5b9a\u7684\u6761\u4ef6\u4e0b\u53ef\u80fd\u4f1a\u4e22\u5931\u5199\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">19\u3001Redis \u96c6\u7fa4\u5982\u4f55\u9009\u62e9\u6570\u636e\u5e93\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u96c6\u7fa4\u76ee\u524d\u65e0\u6cd5\u505a\u6570\u636e\u5e93\u9009\u62e9\uff0c\u9ed8\u8ba4\u5728 0 \u6570\u636e\u5e93\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">20\u3001\u600e\u4e48\u7406\u89e3 Redis \u4e8b\u52a1\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8b\u52a1\u662f\u4e00\u4e2a\u5355\u72ec\u7684\u9694\u79bb\u64cd\u4f5c\uff1a\u4e8b\u52a1\u4e2d\u7684\u6240\u6709\u547d\u4ee4\u90fd\u4f1a\u5e8f\u5217\u5316\u3001\u6309\u987a\u5e8f\u5730\u6267\u884c\u3002\u4e8b\u52a1\u5728\u6267\u884c\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e0d\u4f1a\u88ab\u5176\u4ed6\u5ba2\u6237\u7aef\u53d1\u9001\u6765\u7684\u547d\u4ee4\u8bf7\u6c42\u6240\u6253\u65ad\u3002<\/p>\n\n\n\n<p 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