{"id":5184,"date":"2021-04-03T10:01:03","date_gmt":"2021-04-03T02:01:03","guid":{"rendered":"https:\/\/www.xttblog.com\/?p=5184"},"modified":"2021-04-03T10:01:03","modified_gmt":"2021-04-03T02:01:03","slug":"java%e9%ab%98%e7%ba%a7%e5%b7%a5%e7%a8%8b%e5%b8%88%e7%9a%8440%e9%81%93redis%e9%9d%a2%e8%af%95%e9%a2%98%e5%90%ab%e7%ad%94%e6%a1%88%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=5184","title":{"rendered":"Java\u9ad8\u7ea7\u5de5\u7a0b\u5e08\u768440\u9053Redis\u9762\u8bd5\u9898\u542b\u7b54\u6848\uff01"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u91d1\u4e09\u94f6\u56db\u9762\u8bd5\u5b63\uff0c\u4e3a\u4e86\u505a\u597d\u5927\u5bb6\u9762\u8bd5\u8def\u4e0a\u7684\u52a9\u653b\u624b\uff0c\u5bf9\u4e8e Redis \u8fd9\u5757\u5fc3\u91cc\u8fd8\u6ca1\u5e95\u7684\u540c\u5b66\uff0c\u7279\u6574\u7406 40 \u9053Redis\u5e38\u89c1\u9762\u8bd5\u9898\uff0c\u8ba9\u4f60\u9762\u8bd5\u4e0d\u614c\uff0c\u4e89\u53d6 Offer \u62ff\u5230\u624b\u8f6f\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1\u3001\u4ec0\u4e48\u662f Redis\uff1f<\/strong><br>Redis \u662f\u5b8c\u5168\u5f00\u6e90\u514d\u8d39\u7684\uff0c\u9075\u5b88 BSD \u534f\u8bae\uff0c\u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684 key-value \u6570\u636e\u5e93\u3002<br>Redis \u4e0e\u5176\u4ed6 key &#8211; value \u7f13\u5b58\u4ea7\u54c1\u76f8\u6bd4\u6709\u4ee5\u4e0b\u4e09\u4e2a\u7279\u70b9\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Redis \u652f\u6301\u6570\u636e\u7684\u6301\u4e45\u5316\uff0c\u53ef\u4ee5\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u4fdd\u5b58\u5728\u78c1\u76d8\u4e2d\uff0c\u91cd\u542f\u7684\u65f6\u5019\u53ef\u4ee5\u518d\u6b21\u52a0\u8f7d\u8fdb\u884c\u4f7f\u7528\u3002<\/li><li>Redis \u4e0d\u4ec5\u4ec5\u652f\u6301\u7b80\u5355\u7684 key-value \u7c7b\u578b\u7684\u6570\u636e\uff0c\u540c\u65f6\u8fd8\u63d0\u4f9b list\uff0cset\uff0czset\uff0chash \u7b49\u6570\u636e\u7ed3\u6784\u7684\u5b58\u50a8\u3002<\/li><li>Redis \u652f\u6301\u6570\u636e\u7684\u5907\u4efd\uff0c\u5373 master-slave \u6a21\u5f0f\u7684\u6570\u636e\u5907\u4efd\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u4f18\u52bf\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6027\u80fd\u6781\u9ad8\uff1aRedis \u80fd\u8bfb\u7684\u901f\u5ea6\u662f 110000 \u6b21\/s\uff0c\u5199\u7684\u901f\u5ea6\u662f 81000 \u6b21\/s\u3002<\/li><li>\u4e30\u5bcc\u7684\u6570\u636e\u7c7b\u578b\uff1aRedis \u652f\u6301\u4e8c\u8fdb\u5236\u6848\u4f8b\u7684 Strings\uff0cLists\uff0cHashes\uff0cSets \u53ca Ordered Sets \u6570\u636e\u7c7b\u578b\u64cd\u4f5c\u3002<\/li><li>\u539f\u5b50\uff1aRedis \u7684\u6240\u6709\u64cd\u4f5c\u90fd\u662f\u539f\u5b50\u6027\u7684\uff0c\u610f\u601d\u5c31\u662f\u8981\u4e48\u6210\u529f\u6267\u884c\u8981\u4e48\u5931\u8d25\u5b8c\u5168\u4e0d\u6267\u884c\u3002\u5355\u4e2a\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\u3002\u591a\u4e2a\u64cd\u4f5c\u4e5f\u652f\u6301\u4e8b\u52a1\uff0c\u5373\u539f\u5b50\u6027\uff0c\u901a\u8fc7 MULTI \u548c EXEC \u6307\u4ee4\u5305\u8d77\u6765\u3002<\/li><li>\u4e30\u5bcc\u7684\u7279\u6027\uff1aRedis \u8fd8\u652f\u6301 publish\/subscribe\uff0c\u901a\u77e5\uff0ckey \u8fc7\u671f\u7b49\u7b49\u7279\u6027\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u4e0e\u5176\u4ed6 key-value \u5b58\u50a8\u6709\u4ec0\u4e48\u4e0d\u540c\uff1f<br>Redis \u6709\u7740\u66f4\u4e3a\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u5e76\u4e14\u63d0\u4f9b\u5bf9\u4ed6\u4eec\u7684\u539f\u5b50\u6027\u64cd\u4f5c\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e0d\u540c\u4e8e\u5176\u4ed6\u6570\u636e\u5e93\u7684\u8fdb\u5316\u8def\u5f84\u3002Redis \u7684\u6570\u636e\u7c7b\u578b\u90fd\u662f\u57fa\u4e8e\u57fa\u672c\u6570\u636e\u7ed3\u6784\u7684\u540c\u65f6\u5bf9\u7a0b\u5e8f\u5458\u900f\u660e\uff0c\u65e0\u9700\u8fdb\u884c\u989d\u5916\u7684\u62bd\u8c61\u3002<br>Redis \u8fd0\u884c\u5728\u5185\u5b58\u4e2d\u4f46\u662f\u53ef\u4ee5\u6301\u4e45\u5316\u5230\u78c1\u76d8\uff0c\u6240\u4ee5\u5728\u5bf9\u4e0d\u540c\u6570\u636e\u96c6\u8fdb\u884c\u9ad8\u901f\u8bfb\u5199\u65f6\u9700\u8981\u6743\u8861\u5185\u5b58\uff0c\u56e0\u4e3a\u6570\u636e\u91cf\u4e0d\u80fd\u5927\u4e8e\u786c\u4ef6\u5185\u5b58\u3002\u5728\u5185\u5b58\u6570\u636e\u5e93\u65b9\u9762\u7684\u53e6\u4e00\u4e2a\u4f18\u70b9\u662f\uff0c\u76f8\u6bd4\u5728\u78c1\u76d8\u4e0a\u76f8\u540c\u7684\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5728\u5185\u5b58\u4e2d\u64cd\u4f5c\u8d77\u6765\u975e\u5e38\u7b80\u5355\uff0c\u8fd9\u6837 Redis \u53ef\u4ee5\u505a\u5f88\u591a\u5185\u90e8\u590d\u6742\u6027\u5f88\u5f3a\u7684\u4e8b\u60c5\u3002\u540c\u65f6\uff0c\u5728\u78c1\u76d8\u683c\u5f0f\u65b9\u9762\u4ed6\u4eec\u662f\u7d27\u51d1\u7684\u4ee5\u8ffd\u52a0\u7684\u65b9\u5f0f\u4ea7\u751f\u7684\uff0c\u56e0\u4e3a\u4ed6\u4eec\u5e76\u4e0d\u9700\u8981\u8fdb\u884c\u968f\u673a\u8bbf\u95ee\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2\u3001Redis \u7684\u6570\u636e\u7c7b\u578b\uff1f<\/strong><br>Redis \u652f\u6301\u4e94\u79cd\u6570\u636e\u7c7b\u578b\uff1astring\uff08\u5b57\u7b26\u4e32\uff09\uff0chash\uff08\u54c8\u5e0c\uff09\uff0clist\uff08\u5217\u8868\uff09\uff0cset\uff08\u96c6\u5408\uff09\u53ca zsetsorted set\uff08\u6709\u5e8f\u96c6\u5408\uff09\u3002<br>\u6211\u4eec\u5b9e\u9645\u9879\u76ee\u4e2d\u6bd4\u8f83\u5e38\u7528\u7684\u662f string\uff0chash \u5982\u679c\u4f60\u662f Redis \u4e2d\u9ad8\u7ea7\u7528\u6237\uff0c\u8fd8\u9700\u8981\u52a0\u4e0a\u4e0b\u9762\u51e0\u79cd\u6570\u636e\u7ed3\u6784 HyperLogLog\u3001Geo\u3001Pub\/Sub\u3002<br>\u5982\u679c\u4f60\u8bf4\u8fd8\u73a9\u8fc7 Redis Module\uff0c\u50cf BloomFilter\uff0cRedisSearch\uff0cRedis-ML\uff0c\u9762\u8bd5\u5b98\u7684\u773c\u775b\u5c31\u5f00\u59cb\u53d1\u4eae\u4e86\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3\u3001\u4f7f\u7528 Redis \u6709\u54ea\u4e9b\u597d\u5904\uff1f<\/strong><br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u901f\u5ea6\u5feb\uff0c\u56e0\u4e3a\u6570\u636e\u5b58\u5728\u5185\u5b58\u4e2d\uff0c\u7c7b\u4f3c\u4e8e HashMap\uff0cHashMap \u7684\u4f18\u52bf\u5c31\u662f\u67e5\u627e\u548c\u64cd\u4f5c\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u90fd\u662f O1)<\/li><li>\u652f\u6301\u4e30\u5bcc\u6570\u636e\u7c7b\u578b\uff0c\u652f\u6301 string\uff0clist\uff0cset\uff0cZset\uff0chash \u7b49<\/li><li>\u652f\u6301\u4e8b\u52a1\uff0c\u64cd\u4f5c\u90fd\u662f\u539f\u5b50\u6027\uff0c\u6240\u8c13\u7684\u539f\u5b50\u6027\u5c31\u662f\u5bf9\u6570\u636e\u7684\u66f4\u6539\u8981\u4e48\u5168\u90e8\u6267\u884c\uff0c\u8981\u4e48\u5168\u90e8\u4e0d\u6267\u884c<\/li><li>\u4e30\u5bcc\u7684\u7279\u6027\uff0c\u53ef\u7528\u4e8e\u7f13\u5b58\uff0c\u6d88\u606f\uff0c\u6309 key \u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u8fc7\u671f\u540e\u5c06\u4f1a\u81ea\u52a8\u5220\u9664<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4\u3001Redis \u76f8\u6bd4 Memcached \u6709\u54ea\u4e9b\u4f18\u52bf\uff1f<\/strong><br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>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<\/li><li>Redis \u7684\u901f\u5ea6\u6bd4 Memcached \u5feb\u5f88\u591a<\/li><li>Redis \u53ef\u4ee5\u6301\u4e45\u5316\u5176\u6570\u636e<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5\u3001Memcache \u4e0e Redis \u7684\u533a\u522b\u90fd\u6709\u54ea\u4e9b\uff1f<\/strong><br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5b58\u50a8\u65b9\u5f0f Memecache \u628a\u6570\u636e\u5168\u90e8\u5b58\u5728\u5185\u5b58\u4e4b\u4e2d\uff0c\u65ad\u7535\u540e\u4f1a\u6302\u6389\uff0c\u6570\u636e\u4e0d\u80fd\u8d85\u8fc7\u5185\u5b58\u5927\u5c0f\u3002Redis \u6709\u90e8\u5206\u5b58\u5728\u786c\u76d8\u4e0a\uff0c\u8fd9\u6837\u80fd\u4fdd\u8bc1\u6570\u636e\u7684\u6301\u4e45\u6027\u3002<\/li><li>\u6570\u636e\u652f\u6301\u7c7b\u578b Memcache \u5bf9\u6570\u636e\u7c7b\u578b\u652f\u6301\u76f8\u5bf9\u7b80\u5355\u3002Redis \u6709\u590d\u6742\u7684\u6570\u636e\u7c7b\u578b\u3002<\/li><li>\u4f7f\u7528\u5e95\u5c42\u6a21\u578b\u4e0d\u540c \u5b83\u4eec\u4e4b\u95f4\u5e95\u5c42\u5b9e\u73b0\u65b9\u5f0f \u4ee5\u53ca\u4e0e\u5ba2\u6237\u7aef\u4e4b\u95f4\u901a\u4fe1\u7684\u5e94\u7528\u534f\u8bae\u4e0d\u4e00\u6837\u3002Redis \u76f4\u63a5\u81ea\u5df1\u6784\u5efa\u4e86 VM \u673a\u5236 \uff0c\u56e0\u4e3a\u4e00\u822c\u7684\u7cfb\u7edf\u8c03\u7528\u7cfb\u7edf\u51fd\u6570\u7684\u8bdd\uff0c\u4f1a\u6d6a\u8d39\u4e00\u5b9a\u7684\u65f6\u95f4\u53bb\u79fb\u52a8\u548c\u8bf7\u6c42\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6\u3001Redis \u662f\u5355\u8fdb\u7a0b\u5355\u7ebf\u7a0b\u7684\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u662f\u5355\u8fdb\u7a0b\u5355\u7ebf\u7a0b\u7684\uff0cRedis \u5229\u7528\u961f\u5217\u6280\u672f\u5c06\u5e76\u53d1\u8bbf\u95ee\u53d8\u4e3a\u4e32\u884c\u8bbf\u95ee\uff0c\u6d88\u9664\u4e86\u4f20\u7edf\u6570\u636e\u5e93\u4e32\u884c\u63a7\u5236\u7684\u5f00\u9500\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>7\u3001\u4e00\u4e2a\u5b57\u7b26\u4e32\u7c7b\u578b\u7684\u667a\u80fd\u5b58\u50a8\u6700\u5927\u5bb9\u91cf\u662f\u591a\u5c11\uff1f<\/strong><br>512M\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>8\u3001Redis \u7684\u6301\u4e45\u5316\u673a\u5236\u662f\u4ec0\u4e48\uff1f\u5404\u81ea\u7684\u4f18\u7f3a\u70b9\uff1f<\/strong><br>Redis\u63d0\u4f9b\u4e24\u79cd\u6301\u4e45\u5316\u673a\u5236 RDB \u548c AOF \u673a\u5236\uff1a<br>RDB\uff08Redis DataBase\uff09\u6301\u4e45\u5316\u65b9\u5f0f\uff1a\u662f\u6307\u7528\u6570\u636e\u96c6\u5feb\u7167\u7684\u65b9\u5f0f\u534a\u6301\u4e45\u5316\u6a21\u5f0f\u8bb0\u5f55 Redis \u6570\u636e\u5e93\u7684\u6240\u6709\u952e\u503c\u5bf9\uff0c\u5728\u67d0\u4e2a\u65f6\u95f4\u70b9\u5c06\u6570\u636e\u5199\u5165\u4e00\u4e2a\u4e34\u65f6\u6587\u4ef6\uff0c\u6301\u4e45\u5316\u7ed3\u675f\u540e\uff0c\u7528\u8fd9\u4e2a\u4e34\u65f6\u6587\u4ef6\u66ff\u6362\u4e0a\u6b21\u6301\u4e45\u5316\u7684\u6587\u4ef6\uff0c\u8fbe\u5230\u6570\u636e\u6062\u590d\u3002<br>\u4f18\u70b9\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u53ea\u6709\u4e00\u4e2a\u6587\u4ef6 dump.rdb\uff0c\u65b9\u4fbf\u6301\u4e45\u5316\u3002<\/li><li>\u5bb9\u707e\u6027\u597d\uff0c\u4e00\u4e2a\u6587\u4ef6\u53ef\u4ee5\u4fdd\u5b58\u5230\u5b89\u5168\u7684\u78c1\u76d8\u3002<\/li><li>\u6027\u80fd\u6700\u5927\u5316\uff0cfork \u5b50\u8fdb\u7a0b\u6765\u5b8c\u6210\u5199\u64cd\u4f5c\uff0c\u8ba9\u4e3b\u8fdb\u7a0b\u7ee7\u7eed\u5904\u7406\u547d\u4ee4\uff0c\u6240\u4ee5\u662f IO \u6700\u5927\u5316\u3002\u4f7f\u7528\u5355\u72ec\u5b50\u8fdb\u7a0b\u6765\u8fdb\u884c\u6301\u4e45\u5316\uff0c\u4e3b\u8fdb\u7a0b\u4e0d\u4f1a\u8fdb\u884c\u4efb\u4f55 IO \u64cd\u4f5c\uff0c\u4fdd\u8bc1\u4e86 Redis\u7684\u9ad8\u6027\u80fd\u3002<\/li><li>\u76f8\u5bf9\u4e8e\u6570\u636e\u96c6\u5927\u65f6\uff0c\u6bd4 AOF \u7684\u542f\u52a8\u6548\u7387\u66f4\u9ad8\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f3a\u70b9\uff1a\u6570\u636e\u5b89\u5168\u6027\u4f4e\u3002RDB \u662f\u95f4\u9694\u4e00\u6bb5\u65f6\u95f4\u8fdb\u884c\u6301\u4e45\u5316\uff0c\u5982\u679c\u6301\u4e45\u5316\u4e4b\u95f4 Redis \u53d1\u751f\u6545\u969c\uff0c\u4f1a\u53d1\u751f\u6570\u636e\u4e22\u5931\u3002\u6240\u4ee5\u8fd9\u79cd\u65b9\u5f0f\u66f4\u9002\u5408\u6570\u636e\u8981\u6c42\u4e0d\u4e25\u8c28\u7684\u65f6\u5019AOF\uff08Append-only file\uff09\u6301\u4e45\u5316\u65b9\u5f0f\uff1a\u662f\u6307\u6240\u6709\u7684\u547d\u4ee4\u884c\u8bb0\u5f55\u4ee5 Redis \u547d\u4ee4\u8bf7\u6c42\u534f\u8bae\u7684\u683c\u5f0f\u5b8c\u5168\u6301\u4e45\u5316\u5b58\u50a8\u4fdd\u5b58\u4e3a aof \u6587\u4ef6\u3002<br>\u4f18\u70b9\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6570\u636e\u5b89\u5168\uff0caof \u6301\u4e45\u5316\u53ef\u4ee5\u914d\u7f6e appendfsync \u5c5e\u6027\uff0c\u6709 always\uff0c\u6bcf\u8fdb\u884c\u4e00\u6b21\u547d\u4ee4\u64cd\u4f5c\u5c31\u8bb0\u5f55\u5230 aof \u6587\u4ef6\u4e2d\u4e00\u6b21\u3002<\/li><li>\u901a\u8fc7 append \u6a21\u5f0f\u5199\u6587\u4ef6\uff0c\u5373\u4f7f\u4e2d\u9014\u670d\u52a1\u5668\u5b95\u673a\uff0c\u53ef\u4ee5\u901a\u8fc7 redis-check-aof \u5de5\u5177\u89e3\u51b3\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898\u3002<\/li><li>AOF \u673a\u5236\u7684 rewrite \u6a21\u5f0f\u3002AOF \u6587\u4ef6\u6ca1\u88ab rewrite \u4e4b\u524d\uff08\u6587\u4ef6\u8fc7\u5927\u65f6\u4f1a\u5bf9\u547d\u4ee4\u8fdb\u884c\u5408\u5e76\u91cd\u5199\uff09\uff0c\u53ef\u4ee5\u5220\u9664\u5176\u4e2d\u7684\u67d0\u4e9b\u547d\u4ee4\uff08\u6bd4\u5982\u8bef\u64cd\u4f5c\u7684 flushall\uff09<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f3a\u70b9\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>AOF \u6587\u4ef6\u6bd4 RDB \u6587\u4ef6\u5927\uff0c\u4e14\u6062\u590d\u901f\u5ea6\u6162\u3002<\/li><li>\u6570\u636e\u96c6\u5927\u7684\u65f6\u5019\uff0c\u6bd4 RDB \u542f\u52a8\u6548\u7387\u4f4e\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>9\u3001Redis \u5e38\u89c1\u6027\u80fd\u95ee\u9898\u548c\u89e3\u51b3\u65b9\u6848<\/strong><br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Master \u6700\u597d\u4e0d\u8981\u5199\u5185\u5b58\u5feb\u7167\uff0c\u5982\u679c Master \u5199\u5185\u5b58\u5feb\u7167\uff0csave \u547d\u4ee4\u8c03\u5ea6 rdbSave\u51fd\u6570\uff0c\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\u7684\u5de5\u4f5c\uff0c\u5f53\u5feb\u7167\u6bd4\u8f83\u5927\u65f6\u5bf9\u6027\u80fd\u5f71\u54cd\u662f\u975e\u5e38\u5927\u7684\uff0c\u4f1a\u95f4\u65ad\u6027\u6682\u505c\u670d\u52a1\u3002<\/li><li>\u5982\u679c\u6570\u636e\u6bd4\u8f83\u91cd\u8981\uff0c\u67d0\u4e2a Slave \u5f00\u542f AOF \u5907\u4efd\u6570\u636e\uff0c\u7b56\u7565\u8bbe\u7f6e\u4e3a\u6bcf\u79d2\u540c\u6b65\u4e00\u3002<\/li><li>\u4e3a\u4e86\u4e3b\u4ece\u590d\u5236\u7684\u901f\u5ea6\u548c\u8fde\u63a5\u7684\u7a33\u5b9a\u6027\uff0cMaster \u548c Slave \u6700\u597d\u5728\u540c\u4e00\u4e2a\u5c40\u57df\u7f51\u3002<\/li><li>\u5c3d\u91cf\u907f\u514d\u5728\u538b\u529b\u5f88\u5927\u7684\u4e3b\u5e93\u4e0a\u589e\u52a0\u4ece\u3002<\/li><li>\u4e3b\u4ece\u590d\u5236\u4e0d\u8981\u7528\u56fe\u72b6\u7ed3\u6784\uff0c\u7528\u5355\u5411\u94fe\u8868\u7ed3\u6784\u66f4\u4e3a\u7a33\u5b9a\uff0c\u5373\uff1aMaster &lt;- Slave1&lt;- Slave2 &lt;- Slave3\u2026\u2026\u8fd9\u6837\u7684\u7ed3\u6784\u65b9\u4fbf\u89e3\u51b3\u5355\u70b9\u6545\u969c\u95ee\u9898\uff0c\u5b9e\u73b0 Slave \u5bf9 Master \u7684\u66ff\u6362\u3002\u5982\u679c Master \u6302\u4e86\uff0c\u53ef\u4ee5\u7acb\u523b\u542f\u7528 Slave1 \u505a Master\uff0c\u5176\u4ed6\u4e0d\u53d8\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>10\u3001Redis \u8fc7\u671f\u952e\u7684\u5220\u9664\u7b56\u7565\uff1f<\/strong><br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5b9a\u65f6\u5220\u9664\uff1a\u5728\u8bbe\u7f6e\u952e\u7684\u8fc7\u671f\u65f6\u95f4\u7684\u540c\u65f6\uff0c\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u5668 timer\u3002\u8ba9\u5b9a\u65f6\u5668\u5728\u952e\u7684\u8fc7\u671f\u65f6\u95f4\u6765\u4e34\u65f6\uff0c\u7acb\u5373\u6267\u884c\u5bf9\u952e\u7684\u5220\u9664\u64cd\u4f5c\u3002<\/li><li>\u60f0\u6027\u5220\u9664\uff1a\u653e\u4efb\u952e\u8fc7\u671f\u4e0d\u7ba1\uff0c\u4f46\u662f\u6bcf\u6b21\u4ece\u952e\u7a7a\u95f4\u4e2d\u83b7\u53d6\u952e\u65f6\uff0c\u90fd\u68c0\u67e5\u53d6\u5f97\u7684\u952e\u662f\u5426\u8fc7\u671f\uff0c\u5982\u679c\u8fc7\u671f\u7684\u8bdd\uff0c\u5c31\u5220\u9664\u8be5\u952e;\u5982\u679c\u6ca1\u6709\u8fc7\u671f\uff0c\u5c31\u8fd4\u56de\u8be5\u952e\u3002<\/li><li>\u5b9a\u671f\u5220\u9664\uff1a\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u7a0b\u5e8f\u5c31\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u4e00\u6b21\u68c0\u67e5\uff0c\u5220\u9664\u91cc\u9762\u7684\u8fc7\u671f\u952e\u3002\u81f3\u4e8e\u8981\u5220\u9664\u591a\u5c11\u8fc7\u671f\u952e\uff0c\u4ee5\u53ca\u8981\u68c0\u67e5\u591a\u5c11\u4e2a\u6570\u636e\u5e93\uff0c\u5219\u7531\u7b97\u6cd5\u51b3\u5b9a\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>11\u3001Redis \u7684\u56de\u6536\u7b56\u7565\uff08\u6dd8\u6c70\u7b56\u7565\uff09\uff1f<\/strong><br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>volatile-lru\uff1a\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\uff08server.db[i].expires\uff09\u4e2d\u6311\u9009\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6570\u636e\u6dd8\u6c70<\/li><li>volatile-ttl\uff1a\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\uff08server.db[i].expires\uff09\u4e2d\u6311\u9009\u5c06\u8981\u8fc7\u671f\u7684\u6570\u636e\u6dd8\u6c70<\/li><li>volatile-random\uff1a\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\uff08server.db[i].expires\uff09\u4e2d\u4efb\u610f\u9009\u62e9\u6570\u636e\u6dd8\u6c70<\/li><li>allkeys-lru\uff1a\u4ece\u6570\u636e\u96c6\uff08server.db[i].dict\uff09\u4e2d\u6311\u9009\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6570\u636e\u6dd8\u6c70<\/li><li>allkeys-random\uff1a\u4ece\u6570\u636e\u96c6\uff08server.db[i].dict\uff09\u4e2d\u4efb\u610f\u9009\u62e9\u6570\u636e\u6dd8\u6c70<\/li><li>no-enviction\uff08\u9a71\u9010\uff09\uff1a\u7981\u6b62\u9a71\u9010\u6570\u636e<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\u8fd9\u91cc\u7684 6 \u79cd\u673a\u5236\uff0cvolatile \u548c allkeys \u89c4\u5b9a\u4e86\u662f\u5bf9\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\u6dd8\u6c70\u6570\u636e\u8fd8\u662f\u4ece\u5168\u90e8\u6570\u636e\u96c6\u6dd8\u6c70\u6570\u636e\uff0c\u540e\u9762\u7684 lru\u3001ttl \u4ee5\u53ca random \u662f\u4e09\u79cd\u4e0d\u540c\u7684\u6dd8\u6c70\u7b56\u7565\uff0c\u518d\u52a0\u4e0a\u4e00\u79cd no-enviction \u6c38\u4e0d\u56de\u6536\u7684\u7b56\u7565\u3002<br>\u4f7f\u7528\u7b56\u7565\u89c4\u5219\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5982\u679c\u6570\u636e\u5448\u73b0\u5e42\u5f8b\u5206\u5e03\uff0c\u4e5f\u5c31\u662f\u4e00\u90e8\u5206\u6570\u636e\u8bbf\u95ee\u9891\u7387\u9ad8\uff0c\u4e00\u90e8\u5206\u6570\u636e\u8bbf\u95ee\u9891\u7387\u4f4e\uff0c\u5219\u4f7f\u7528 allkeys-lru<\/li><li>\u5982\u679c\u6570\u636e\u5448\u73b0\u5e73\u7b49\u5206\u5e03\uff0c\u4e5f\u5c31\u662f\u6240\u6709\u7684\u6570\u636e\u8bbf\u95ee\u9891\u7387\u90fd\u76f8\u540c\uff0c\u5219\u4f7f\u7528 allkeys-random<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>12\u3001\u4e3a\u4ec0\u4e48 Redis \u9700\u8981\u628a\u6240\u6709\u6570\u636e\u653e\u5230\u5185\u5b58\u4e2d\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u4e3a\u4e86\u8fbe\u5230\u6700\u5feb\u7684\u8bfb\u5199\u901f\u5ea6\u5c06\u6570\u636e\u90fd\u8bfb\u5230\u5185\u5b58\u4e2d\uff0c\u5e76\u901a\u8fc7\u5f02\u6b65\u7684\u65b9\u5f0f\u5c06\u6570\u636e\u5199\u5165\u78c1\u76d8\u3002\u6240\u4ee5 Redis \u5177\u6709\u5feb\u901f\u548c\u6570\u636e\u6301\u4e45\u5316\u7684\u7279\u5f81\u3002\u5982\u679c\u4e0d\u5c06\u6570\u636e\u653e\u5728\u5185\u5b58\u4e2d\uff0c\u78c1\u76d8 I\/O \u901f\u5ea6\u4e3a\u4e25\u91cd\u5f71\u54cd Redis \u7684\u6027\u80fd\u3002\u5728\u5185\u5b58\u8d8a\u6765\u8d8a\u4fbf\u5b9c\u7684\u4eca\u5929\uff0cRedis \u5c06\u4f1a\u8d8a\u6765\u8d8a\u53d7\u6b22\u8fce\u3002\u5982\u679c\u8bbe\u7f6e\u4e86\u6700\u5927\u4f7f\u7528\u7684\u5185\u5b58\uff0c\u5219\u6570\u636e\u5df2\u6709\u8bb0\u5f55\u6570\u8fbe\u5230\u5185\u5b58\u9650\u503c\u540e\u4e0d\u80fd\u7ee7\u7eed\u63d2\u5165\u65b0\u503c\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>13\u3001Redis \u7684\u540c\u6b65\u673a\u5236\u4e86\u89e3\u4e48\uff1f<\/strong><br><\/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\u6536\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<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>14\u3001Pipeline \u6709\u4ec0\u4e48\u597d\u5904\uff0c\u4e3a\u4ec0\u4e48\u8981\u7528 Pipeline\uff1f<\/strong><br><\/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<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>15\u3001\u662f\u5426\u4f7f\u7528\u8fc7 Redis \u96c6\u7fa4\uff0c\u96c6\u7fa4\u7684\u539f\u7406\u662f\u4ec0\u4e48\uff1f<\/strong><br><\/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\u4e3amaster\uff0c\u7ee7\u7eed\u63d0\u4f9b\u670d\u52a1\u3002<br>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<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>16\u3001Redis \u96c6\u7fa4\u65b9\u6848\u4ec0\u4e48\u60c5\u51b5\u4e0b\u4f1a\u5bfc\u81f4\u6574\u4e2a\u96c6\u7fa4\u4e0d\u53ef\u7528\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709 A\uff0cB\uff0cC \u4e09\u4e2a\u8282\u70b9\u7684\u96c6\u7fa4\uff0c\u5728\u6ca1\u6709\u590d\u5236\u6a21\u578b\u7684\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u8282\u70b9 B \u5931\u8d25\u4e86\uff0c\u90a3\u4e48\u6574\u4e2a\u96c6\u7fa4\u5c31\u4f1a\u4ee5\u4e3a\u7f3a\u5c11 5501-11000 \u8fd9\u4e2a\u8303\u56f4\u7684\u69fd\u800c\u4e0d\u53ef\u7528\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>17\u3001Redis \u652f\u6301\u7684 Java \u5ba2\u6237\u7aef\u90fd\u6709\u54ea\u4e9b\uff1f\u5b98\u65b9\u63a8\u8350\u7528\u54ea\u4e2a\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redisson\u3001Jedis\u3001lettuce \u7b49\u7b49\uff0c\u5b98\u65b9\u63a8\u8350\u4f7f\u7528 Redisson\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>18\u3001Jedis \u4e0e Redisson \u5bf9\u6bd4\u6709\u4ec0\u4e48\u4f18\u7f3a\u70b9\uff1f<\/strong><br><\/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\uff1bRedisson \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\u3002<br>Redisson \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<br><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2021\/20201010103356145.png\" alt=\"\" \/><figcaption>Redis\u9ad8\u7ea7\u9762\u8bd5\u9898<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>19\u3001Redis \u5982\u4f55\u8bbe\u7f6e\u5bc6\u7801\u53ca\u9a8c\u8bc1\u5bc6\u7801\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bbe\u7f6e\u5bc6\u7801\uff1aconfig set requirepass 123456<br>\u6388\u6743\u5bc6\u7801\uff1aauth 123456<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>20\u3001\u8bf4\u8bf4 Redis \u54c8\u5e0c\u69fd\u7684\u6982\u5ff5\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u96c6\u7fa4\u6ca1\u6709\u4f7f\u7528\u4e00\u81f4\u6027 hash\uff0c\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<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>21\u3001Redis \u96c6\u7fa4\u7684\u4e3b\u4ece\u590d\u5236\u6a21\u578b\u662f\u600e\u6837\u7684\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u4f7f\u5728\u90e8\u5206\u8282\u70b9\u5931\u8d25\u6216\u8005\u5927\u90e8\u5206\u8282\u70b9\u65e0\u6cd5\u901a\u4fe1\u7684\u60c5\u51b5\u4e0b\u96c6\u7fa4\u4ecd\u7136\u53ef\u7528\uff0c\u6240\u4ee5\u96c6\u7fa4\u4f7f\u7528\u4e86\u4e3b\u4ece\u590d\u5236\u6a21\u578b\uff0c\u6bcf\u4e2a\u8282\u70b9\u90fd\u4f1a\u6709 N-1 \u4e2a\u590d\u5236\u54c1\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>22\u3001Redis \u96c6\u7fa4\u4f1a\u6709\u5199\u64cd\u4f5c\u4e22\u5931\u5417\uff1f\u4e3a\u4ec0\u4e48\uff1f<\/strong><br><\/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\u7740\u5728\u5b9e\u9645\u4e2d\u96c6\u7fa4\u5728\u7279\u5b9a\u7684\u6761\u4ef6\u4e0b\u53ef\u80fd\u4f1a\u4e22\u5931\u5199\u64cd\u4f5c\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>23\u3001Redis \u96c6\u7fa4\u4e4b\u95f4\u662f\u5982\u4f55\u590d\u5236\u7684\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f02\u6b65\u590d\u5236\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>24\u3001Redis \u96c6\u7fa4\u6700\u5927\u8282\u70b9\u4e2a\u6570\u662f\u591a\u5c11\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">16384 \u4e2a\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>25\u3001Redis \u96c6\u7fa4\u5982\u4f55\u9009\u62e9\u6570\u636e\u5e93\uff1f<\/strong><br><\/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<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>26\u3001\u600e\u4e48\u6d4b\u8bd5 Redis \u7684\u8fde\u901a\u6027\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 ping \u547d\u4ee4\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>27\u3001\u600e\u4e48\u7406\u89e3 Redis \u4e8b\u52a1\uff1f<\/strong><br><\/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<br>\u4e8b\u52a1\u662f\u4e00\u4e2a\u539f\u5b50\u64cd\u4f5c\uff1a\u4e8b\u52a1\u4e2d\u7684\u547d\u4ee4\u8981\u4e48\u5168\u90e8\u88ab\u6267\u884c\uff0c\u8981\u4e48\u5168\u90e8\u90fd\u4e0d\u6267\u884c\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>28\u3001Redis \u4e8b\u52a1\u76f8\u5173\u7684\u547d\u4ee4\u6709\u54ea\u51e0\u4e2a\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MULTI\u3001EXEC\u3001DISCARD\u3001WATCH\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>29\u3001Redis key \u7684\u8fc7\u671f\u65f6\u95f4\u548c\u6c38\u4e45\u6709\u6548\u5206\u522b\u600e\u4e48\u8bbe\u7f6e\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">EXPIRE \u548c PERSIST \u547d\u4ee4\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>30\u3001Redis \u5982\u4f55\u505a\u5185\u5b58\u4f18\u5316\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c3d\u53ef\u80fd\u4f7f\u7528\u6563\u5217\u8868\uff08hashes\uff09\uff0c\u6563\u5217\u8868\uff08\u662f\u8bf4\u6563\u5217\u8868\u91cc\u9762\u5b58\u50a8\u7684\u6570\u5c11\uff09\u4f7f\u7528\u7684\u5185\u5b58\u975e\u5e38\u5c0f\uff0c\u6240\u4ee5\u4f60\u5e94\u8be5\u5c3d\u53ef\u80fd\u7684\u5c06\u4f60\u7684\u6570\u636e\u6a21\u578b\u62bd\u8c61\u5230\u4e00\u4e2a\u6563\u5217\u8868\u91cc\u9762\u3002\u6bd4\u5982\u4f60\u7684 Web \u7cfb\u7edf\u4e2d\u6709\u4e00\u4e2a\u7528\u6237\u5bf9\u8c61\uff0c\u4e0d\u8981\u4e3a\u8fd9\u4e2a\u7528\u6237\u7684\u540d\u79f0\uff0c\u59d3\u6c0f\uff0c\u90ae\u7bb1\uff0c\u5bc6\u7801\u8bbe\u7f6e\u5355\u72ec\u7684 key,\u800c\u662f\u5e94\u8be5\u628a\u8fd9\u4e2a\u7528\u6237\u7684\u6240\u6709\u4fe1\u606f\u5b58\u50a8\u5230\u4e00\u5f20\u6563\u5217\u8868\u91cc\u9762\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>31\u3001Redis \u56de\u6536\u8fdb\u7a0b\u5982\u4f55\u5de5\u4f5c\u7684\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u4e2a\u5ba2\u6237\u7aef\u8fd0\u884c\u4e86\u65b0\u7684\u547d\u4ee4\uff0c\u6dfb\u52a0\u4e86\u65b0\u7684\u6570\u636e\u3002Redis \u68c0\u67e5\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff0c\u5982\u679c\u5927\u4e8e maxmemory \u7684\u9650\u5236\uff0c\u5219\u6839\u636e\u8bbe\u5b9a\u597d\u7684\u7b56\u7565\u8fdb\u884c\u56de\u6536\u3002\u4e00\u4e2a\u65b0\u7684\u547d\u4ee4\u88ab\u6267\u884c\uff0c\u7b49\u7b49\u3002\u6240\u4ee5\u6211\u4eec\u4e0d\u65ad\u5730\u7a7f\u8d8a\u5185\u5b58\u9650\u5236\u7684\u8fb9\u754c\uff0c\u901a\u8fc7\u4e0d\u65ad\u8fbe\u5230\u8fb9\u754c\u7136\u540e\u4e0d\u65ad\u5730\u56de\u6536\u56de\u5230\u8fb9\u754c\u4ee5\u4e0b\u3002\u5982\u679c\u4e00\u4e2a\u547d\u4ee4\u7684\u7ed3\u679c\u5bfc\u81f4\u5927\u91cf\u5185\u5b58\u88ab\u4f7f\u7528\uff08\u4f8b\u5982\u5f88\u5927\u7684\u96c6\u5408\u7684\u4ea4\u96c6\u4fdd\u5b58\u5230\u4e00\u4e2a\u65b0\u7684\u952e\uff09\uff0c\u4e0d\u7528\u591a\u4e45\u5185\u5b58\u9650\u5236\u5c31\u4f1a\u88ab\u8fd9\u4e2a\u5185\u5b58\u4f7f\u7528\u91cf\u8d85\u8d8a\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>32\u3001\u90fd\u6709\u54ea\u4e9b\u529e\u6cd5\u53ef\u4ee5\u964d\u4f4e Redis \u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u5462\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u4f7f\u7528\u7684\u662f 32 \u4f4d\u7684 Redis \u5b9e\u4f8b\uff0c\u53ef\u4ee5\u597d\u597d\u5229\u7528 Hash\uff0clist\uff0csorted set\uff0cset\u7b49\u96c6\u5408\u7c7b\u578b\u6570\u636e\uff0c\u56e0\u4e3a\u901a\u5e38\u60c5\u51b5\u4e0b\u5f88\u591a\u5c0f\u7684 Key-Value \u53ef\u4ee5\u7528\u66f4\u7d27\u51d1\u7684\u65b9\u5f0f\u5b58\u653e\u5230\u4e00\u8d77\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>33\u3001Redis \u7684\u5185\u5b58\u7528\u5b8c\u4e86\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u8fbe\u5230\u8bbe\u7f6e\u7684\u4e0a\u9650\uff0cRedis \u7684\u5199\u547d\u4ee4\u4f1a\u8fd4\u56de\u9519\u8bef\u4fe1\u606f\uff08\u4f46\u662f\u8bfb\u547d\u4ee4\u8fd8\u53ef\u4ee5\u6b63\u5e38\u8fd4\u56de\u3002\uff09\u6216\u8005\u4f60\u53ef\u4ee5\u5c06 Redis \u5f53\u7f13\u5b58\u6765\u4f7f\u7528\u914d\u7f6e\u6dd8\u6c70\u673a\u5236\uff0c\u5f53 Redis \u8fbe\u5230\u5185\u5b58\u4e0a\u9650\u65f6\u4f1a\u51b2\u5237\u6389\u65e7\u7684\u5185\u5bb9\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>34\u3001\u4e00\u4e2a Redis \u5b9e\u4f8b\u6700\u591a\u80fd\u5b58\u653e\u591a\u5c11\u7684 keys\uff1fList\u3001Set\u3001Sorted Set \u4ed6\u4eec\u6700\u591a\u80fd\u5b58\u653e\u591a\u5c11\u5143\u7d20\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7406\u8bba\u4e0a Redis \u53ef\u4ee5\u5904\u7406\u591a\u8fbe 232 \u7684 keys\uff0c\u5e76\u4e14\u5728\u5b9e\u9645\u4e2d\u8fdb\u884c\u4e86\u6d4b\u8bd5\uff0c\u6bcf\u4e2a\u5b9e\u4f8b\u81f3\u5c11\u5b58\u653e\u4e86 2 \u4ebf 5 \u5343\u4e07\u7684 keys\u3002\u6211\u4eec\u6b63\u5728\u6d4b\u8bd5\u4e00\u4e9b\u8f83\u5927\u7684\u503c\u3002\u4efb\u4f55 list\u3001set\u3001\u548c sorted set \u90fd\u53ef\u4ee5\u653e 232 \u4e2a\u5143\u7d20\u3002\u6362\u53e5\u8bdd\u8bf4\uff0cRedis \u7684\u5b58\u50a8\u6781\u9650\u662f\u7cfb\u7edf\u4e2d\u7684\u53ef\u7528\u5185\u5b58\u503c\u3002<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>35\u3001MySQL \u91cc\u6709 2000w \u6570\u636e\uff0cRedis \u4e2d\u53ea\u5b58 20w \u7684\u6570\u636e\uff0c\u5982\u4f55\u4fdd\u8bc1 Redis \u4e2d\u7684\u6570\u636e\u90fd\u662f\u70ed\u70b9\u6570\u636e\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \u5185\u5b58\u6570\u636e\u96c6\u5927\u5c0f\u4e0a\u5347\u5230\u4e00\u5b9a\u5927\u5c0f\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u65bd\u884c\u6570\u636e\u6dd8\u6c70\u7b56\u7565\u3002<br>\u76f8\u5173\u77e5\u8bc6\uff1aRedis \u63d0\u4f9b 6 \u79cd\u6570\u636e\u6dd8\u6c70\u7b56\u7565\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>volatile-lru\uff1a\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\uff08server.db[i].expires\uff09\u4e2d\u6311\u9009\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6570\u636e\u6dd8\u6c70<\/li><li>volatile-ttl\uff1a\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\uff08server.db[i].expires\uff09\u4e2d\u6311\u9009\u5c06\u8981\u8fc7\u671f\u7684\u6570\u636e\u6dd8\u6c70<\/li><li>volatile-random\uff1a\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\uff08server.db[i].expires\uff09\u4e2d\u4efb\u610f\u9009\u62e9\u6570\u636e\u6dd8\u6c70<\/li><li>allkeys-lru\uff1a\u4ece\u6570\u636e\u96c6\uff08server.db[i].dict\uff09\u4e2d\u6311\u9009\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6570\u636e\u6dd8\u6c70<\/li><li>allkeys-random\uff1a\u4ece\u6570\u636e\u96c6\uff08server.db[i].dict\uff09\u4e2d\u4efb\u610f\u9009\u62e9\u6570\u636e\u6dd8\u6c70<\/li><li>no-enviction\uff08\u9a71\u9010\uff09\uff1a\u7981\u6b62\u9a71\u9010\u6570\u636e<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>36\u3001Redis \u6700\u9002\u5408\u7684\u573a\u666f\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f1a\u8bdd\u7f13\u5b58\uff08Session Cache\uff09\uff0c\u6700\u5e38\u7528\u7684\u4e00\u79cd\u4f7f\u7528 Redis \u7684\u60c5\u666f\u662f\u4f1a\u8bdd\u7f13\u5b58\uff08session cache\uff09\u3002\u7528 Redis \u7f13\u5b58\u4f1a\u8bdd\u6bd4\u5176\u4ed6\u5b58\u50a8\uff08\u5982 Memcached\uff09\u7684\u4f18\u52bf\u5728\u4e8e\uff1aRedis \u63d0\u4f9b\u6301\u4e45\u5316\u3002\u5f53\u7ef4\u62a4\u4e00\u4e2a\u4e0d\u662f\u4e25\u683c\u8981\u6c42\u4e00\u81f4\u6027\u7684\u7f13\u5b58\u65f6\uff0c\u5982\u679c\u7528\u6237\u7684\u8d2d\u7269\u8f66\u4fe1\u606f\u5168\u90e8\u4e22\u5931\uff0c\u5927\u90e8\u5206\u4eba\u90fd\u4f1a\u4e0d\u9ad8\u5174\u7684\uff0c\u73b0\u5728\uff0c\u4ed6\u4eec\u8fd8\u4f1a\u8fd9\u6837\u5417\uff1f\u5e78\u8fd0\u7684\u662f\uff0c\u968f\u7740 Redis \u8fd9\u4e9b\u5e74\u7684\u6539\u8fdb\uff0c\u5f88\u5bb9\u6613\u627e\u5230\u600e\u4e48\u6070\u5f53\u7684\u4f7f\u7528 Redis \u6765\u7f13\u5b58\u4f1a\u8bdd\u7684\u6587\u6863\u3002\u751a\u81f3\u5e7f\u4e3a\u4eba\u77e5\u7684\u5546\u4e1a\u5e73\u53f0Magento \u4e5f\u63d0\u4f9b Redis \u7684\u63d2\u4ef6\u3002<br>\u5168\u9875\u7f13\u5b58\uff08FPC\uff09\uff0c\u9664\u57fa\u672c\u7684\u4f1a\u8bdd token \u4e4b\u5916\uff0cRedis \u8fd8\u63d0\u4f9b\u5f88\u7b80\u4fbf\u7684 FPC \u5e73\u53f0\u3002\u56de\u5230\u4e00\u81f4\u6027\u95ee\u9898\uff0c\u5373\u4f7f\u91cd\u542f\u4e86 Redis \u5b9e\u4f8b\uff0c\u56e0\u4e3a\u6709\u78c1\u76d8\u7684\u6301\u4e45\u5316\uff0c\u7528\u6237\u4e5f\u4e0d\u4f1a\u770b\u5230\u9875\u9762\u52a0\u8f7d\u901f\u5ea6\u7684\u4e0b\u964d\uff0c\u8fd9\u662f\u4e00\u4e2a\u6781\u5927\u6539\u8fdb\uff0c\u7c7b\u4f3c PHP \u672c\u5730 FPC\u3002\u518d\u6b21\u4ee5 Magento \u4e3a\u4f8b\uff0cMagento\u63d0\u4f9b\u4e00\u4e2a\u63d2\u4ef6\u6765\u4f7f\u7528 Redis \u4f5c\u4e3a\u5168\u9875\u7f13\u5b58\u540e\u7aef\u3002\u6b64\u5916\uff0c\u5bf9 WordPress \u7684\u7528\u6237\u6765\u8bf4\uff0cPantheon \u6709\u4e00\u4e2a\u975e\u5e38\u597d\u7684\u63d2\u4ef6 wp-redis\uff0c\u8fd9\u4e2a\u63d2\u4ef6\u80fd\u5e2e\u52a9\u4f60\u4ee5\u6700\u5feb\u901f\u5ea6\u52a0\u8f7d\u4f60\u66fe\u6d4f\u89c8\u8fc7\u7684\u9875\u9762\u3002<br>\u961f\u5217\uff0cReids \u5728\u5185\u5b58\u5b58\u50a8\u5f15\u64ce\u9886\u57df\u7684\u4e00\u5927\u4f18\u70b9\u662f\u63d0\u4f9b list \u548c set \u64cd\u4f5c\uff0c\u8fd9\u4f7f\u5f97 Redis\u80fd\u4f5c\u4e3a\u4e00\u4e2a\u5f88\u597d\u7684\u6d88\u606f\u961f\u5217\u5e73\u53f0\u6765\u4f7f\u7528\u3002Redis \u4f5c\u4e3a\u961f\u5217\u4f7f\u7528\u7684\u64cd\u4f5c\uff0c\u5c31\u7c7b\u4f3c\u4e8e\u672c\u5730\u7a0b\u5e8f\u8bed\u8a00\uff08\u5982 Python\uff09\u5bf9 list \u7684 push\/pop \u64cd\u4f5c\u3002\u5982\u679c\u4f60\u5feb\u901f\u5730\u5728 Google\u4e2d\u641c\u7d22\u201cRedis queues\u201d\uff0c\u4f60\u9a6c\u4e0a\u5c31\u80fd\u627e\u5230\u5927\u91cf\u7684\u5f00\u6e90\u9879\u76ee\uff0c\u8fd9\u4e9b\u9879\u76ee\u7684\u76ee\u7684\u5c31\u662f\u5229\u7528 Redis \u521b\u5efa\u975e\u5e38\u597d\u7684\u540e\u7aef\u5de5\u5177\uff0c\u4ee5\u6ee1\u8db3\u5404\u79cd\u961f\u5217\u9700\u6c42\u3002\u4f8b\u5982\uff0cCelery \u6709\u4e00\u4e2a\u540e\u53f0\u5c31\u662f\u4f7f\u7528 Redis \u4f5c\u4e3a broker\uff0c\u4f60\u53ef\u4ee5\u4ece\u8fd9\u91cc\u53bb\u67e5\u770b\u3002<br>\u6392\u884c\u699c\/\u8ba1\u6570\u5668\uff0cRedis \u5728\u5185\u5b58\u4e2d\u5bf9\u6570\u5b57\u8fdb\u884c\u9012\u589e\u6216\u9012\u51cf\u7684\u64cd\u4f5c\u5b9e\u73b0\u7684\u975e\u5e38\u597d\u3002\u96c6\u5408\uff08Set\uff09\u548c\u6709\u5e8f\u96c6\u5408\uff08Sorted Set\uff09\u4e5f\u4f7f\u5f97\u6211\u4eec\u5728\u6267\u884c\u8fd9\u4e9b\u64cd\u4f5c\u7684\u65f6\u5019\u53d8\u7684\u975e\u5e38\u7b80\u5355\uff0cRedis \u53ea\u662f\u6b63\u597d\u63d0\u4f9b\u4e86\u8fd9\u4e24\u79cd\u6570\u636e\u7ed3\u6784\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u8981\u4ece\u6392\u5e8f\u96c6\u5408\u4e2d\u83b7\u53d6\u5230\u6392\u540d\u6700\u9760\u524d\u7684 10 \u4e2a\u7528\u6237\u2014\u2014\u6211\u4eec\u79f0\u4e4b\u4e3a\u201cuser_scores\u201d\uff0c\u6211\u4eec\u53ea\u9700\u8981\u50cf\u4e0b\u9762\u4e00\u6837\u6267\u884c\u5373\u53ef\uff1a\u5f53\u7136\uff0c\u8fd9\u662f\u5047\u5b9a\u4f60\u662f\u6839\u636e\u4f60\u7528\u6237\u7684\u5206\u6570\u505a\u9012\u589e\u7684\u6392\u5e8f\u3002\u5982\u679c\u4f60\u60f3\u8fd4\u56de\u7528\u6237\u53ca\u7528\u6237\u7684\u5206\u6570\uff0c\u4f60\u9700\u8981\u8fd9\u6837\u6267\u884c\uff1aZRANGE user_scores 0 10 WITHSCORES Agora Games \u5c31\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u4f8b\u5b50\uff0c\u7528 Ruby \u5b9e\u73b0\u7684\uff0c\u5b83\u7684\u6392\u884c\u699c\u5c31\u662f\u4f7f\u7528 Redis 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class=\"wp-block-paragraph\"><strong>\u5982\u679c\u5bf9\u65b9\u8ffd\u95ee Redis \u5982\u4f55\u5b9e\u73b0\u5ef6\u65f6\u961f\u5217\uff1f<\/strong><br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4f30\u8ba1\u73b0\u5728\u4f60\u5f88\u60f3\u628a\u9762\u8bd5\u5b98\u4e00\u68d2\u6253\u6b7b\u5982\u679c\u4f60\u624b\u4e0a\u6709\u4e00\u6839\u68d2\u7403\u68cd\u7684\u8bdd\uff0c\u600e\u4e48\u95ee\u5f97\u8fd9\u4e48\u8be6\u7ec6\u3002\u4f46\u662f\u4f60\u5f88\u514b\u5236\uff0c\u7136\u540e\u795e\u6001\u81ea\u82e5\u5730\u56de\u7b54\u9053\uff1a\u4f7f\u7528 sortedset\uff0c\u62ff\u65f6\u95f4\u6233\u4f5c\u4e3ascore\uff0c\u6d88\u606f\u5185\u5bb9\u4f5c\u4e3a key \u8c03\u7528 zadd \u6765\u751f\u4ea7\u6d88\u606f\uff0c\u6d88\u8d39\u8005\u7528 zrangebyscore \u6307\u4ee4\u83b7\u53d6 N 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target=\"_blank\">https:\/\/www.bilibili.com\/video\/BV1YA411J7kq<\/a>\uff0c<a rel=\"noreferrer noopener\" aria-label=\"https:\/\/www.bilibili.com\/video\/BV1Fp4y1q7st\uff08\u5728\u65b0\u7a97\u53e3\u6253\u5f00\uff09\" href=\"https:\/\/www.bilibili.com\/video\/BV1Fp4y1q7st\" target=\"_blank\">https:\/\/www.bilibili.com\/video\/BV1Fp4y1q7st<\/a>\uff0c\u52a9\u4f60\u83b7\u5f97\u9ad8\u85aa\uff01<\/p>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" 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[&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[669,1876,1878,1877,410],"class_list":["post-5184","post","type-post","status-publish","format-standard","hentry","category-java","tag-redis","tag-redis-hgetall-","tag-redis-hgetall","tag-410"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5184","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5184"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5184\/revisions"}],"predecessor-version":[{"id":5185,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5184\/revisions\/5185"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5184"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5184"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5184"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}