\u6570\u636e\u5e93\u7f13\u5b58\u53ef\u4ee5\u6781\u5927\u5730\u89e3\u51b3\u6570\u636e\u5e93\u670d\u52a1\u5668\u7684\u538b\u529b\uff0c\u63d0\u9ad8\u5e94\u7528\u6570\u636e\u7684\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n
\u5e38\u89c1\u7684\u7f13\u5b58\u5f62\u5f0f\uff1a\u5185\u5b58\u7f13\u5b58\u3001\u6587\u4ef6\u7f13\u5b58\u3002\u8fd9\u91cc\u91cd\u70b9\u8ba8\u8bba\u5185\u5b58\u7f13\u5b58\u3002<\/p>\n
\u4e8c\u3001\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528\u7f13\u5b58<\/h2>\n
\u7f13\u5b58\u6570\u636e\u662f\u4e3a\u4e86\u8ba9\u5ba2\u6237\u7aef\u5f88\u5c11\u751a\u81f3\u4e0d\u8bbf\u95ee\u6570\u636e\u5e93\u670d\u52a1\u5668\u8fdb\u884c\u6570\u636e\u7684\u67e5\u8be2\uff0c\u9ad8\u5e76\u53d1\u4e0b\uff0c\u80fd\u6700\u5927\u7a0b\u5ea6\u5730\u964d\u4f4e\u5bf9\u6570\u636e\u5e93\u670d\u52a1\u5668\u7684\u8bbf\u95ee\u538b\u529b\u3002<\/p>\n
\u7528\u6237\u8bf7\u6c42 \u2013> \u6570\u636e\u67e5\u8be2 \u2013>\u8fde\u63a5\u6570\u636e\u5e93\u670d\u52a1\u5668\u5e76\u67e5\u8be2\u6570\u636e \u2013>\u5c06\u6570\u636e\u7f13\u5b58\u8d77\u6765\uff08HTML\u3001\u5185\u5b58\u3001JSON\u3001\u5e8f\u5217\u5316\u6570\u636e\uff09\u2013> \u663e\u793a\u7ed9\u5ba2\u6237\u7aef<\/p>\n
\u7528\u6237\u518d\u6b21\u8bf7\u6c42\u6216\u8005\u65b0\u7528\u6237\u8bbf\u95ee \u2013> \u6570\u636e\u67e5\u8be2 \u2013> \u76f4\u63a5\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e \u2013> \u663e\u793a\u7ed9\u5ba2\u6237\u7aef<\/p>\n
\u4e09\u3001MySQL\u7684\u67e5\u8be2\u7f13\u5b58<\/h2>\n
\u542f\u7528MySQL\u67e5\u8be2\u7f13\u5b58\uff0c\u6781\u5927\u5730\u964d\u4f4eCPU\u4f7f\u7528\u7387<\/p>\n
query_cache_type<\/strong><\/p>\n \u67e5\u8be2\u7f13\u5b58\u7c7b\u578b\uff0c\u67090\u30011\u30012\u4e09\u4e2a\u53d6\u503c\u30020\u5219\u4e0d\u4f7f\u7528\u67e5\u8be2\u7f13\u5b58\u30021\u8868\u793a\u59cb\u7ec8\u4f7f\u7528\u67e5\u8be2\u7f13\u5b58\u30022\u8868\u793a\u6309\u9700\u4f7f\u7528\u67e5\u8be2\u7f13\u5b58\u3002<\/p>\n query_cache_type\u4e3a1\u65f6\uff0c\u4e5f\u53ef\u4ee5\u5173\u95ed\u67e5\u8be2\u7f13\u5b58<\/p>\n SELECT SQL_NO_CACHE * FROM my_table WHERE condition;<\/p>\n query_cache_type \u4e3a2\u65f6\uff0c\u4e5f\u53ef\u4ee5\u6309\u9700\u67e5\u8be2\u7f13\u5b58<\/p>\n SELECT SQL_CACHE * FROM my_table WHERE condition;<\/p>\n query_cache_size<\/strong><\/p>\n \u9ed8\u8ba4\u60c5\u51b5\u4e0b query_cache_size\u4e3a0\uff0c\u8868\u793a\u4e3a\u67e5\u8be2\u7f13\u5b58\u9884\u7559\u7684\u5185\u5b58\u4e3a0\uff0c\u5219\u65e0\u6cd5\u4f7f\u7528\u67e5\u8be2\u7f13\u5b58\uff08\u6211\u4eec\u53ef\u5c06\u8bbe\u7f6e\u621064M\u6216\u4ee5\u4e0a<\/span>\uff09<\/p>\n SET GLOBAL query_cache_size = 134217728<\/p>\n \u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n \u67e5\u8be2\u7f13\u5b58\u53ef\u4ee5\u770b\u505a\u662fSQL\u6587\u672c\u548c\u67e5\u8be2\u7ed3\u679c\u7684\u6620\u5c04<\/p>\n \u7b2c\u4e8c\u6b21\u67e5\u8be2\u7684SQL\u548c\u7b2c\u4e00\u6b21\u67e5\u8be2\u7684SQL\u5b8c\u5168\u76f8\u540c\uff0c\u5219\u4f1a\u4f7f\u7528\u7f13\u5b58<\/p>\n SHOW STATUS LIKE \u2018Qcache_hits\u2019;\u00a0 \u67e5\u770b\u547d\u4e2d\u6b21\u6570<\/p>\n \u8868\u7684\u7ed3\u6784\u6216\u6570\u636e\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u67e5\u8be2\u7f13\u5b58\u4e2d\u7684\u6570\u636e\u4e0d\u518d\u6709\u6548<\/p>\n \u6e05\u7406\u7f13\u5b58<\/strong><\/p>\n FLUSH QUERY CACHE;\u00a0 \/\/\u6e05\u7406\u67e5\u8be2\u7f13\u5b58\u5185\u5b58\u788e\u7247<\/p>\n RESET QUERY CACHE;\u00a0 \/\/\u4ece\u67e5\u8be2\u7f13\u5b58\u4e2d\u79fb\u51fa\u6240\u6709\u67e5\u8be2<\/p>\n FLUSH TABLES;\u00a0 \/\/\u5173\u95ed\u6240\u6709\u6253\u5f00\u7684\u8868\uff0c\u540c\u65f6\u8be5\u64cd\u4f5c\u5c06\u4f1a\u6e05\u7a7a\u67e5\u8be2\u7f13\u5b58\u4e2d\u7684\u5185\u5bb9<\/p>\n \u5bf9\u4e8e\u5927\u578b\u7ad9\u70b9\uff0c\u5982\u679c\u6ca1\u6709\u4e2d\u95f4\u7f13\u5b58\u5c42\uff0c\u5f53\u6d41\u91cf\u6253\u5165\u6570\u636e\u5e93\u5c42\u65f6\uff0c\u5373\u4fbf\u4e4b\u524d\u7684\u51e0\u5c42\u4e3a\u6211\u4eec\u6321\u4f4f\u4e00\u90e8\u5206\u6d41\u91cf\uff0c\u4f46\u662f\u5728\u5927\u5e76\u53d1\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd8\u662f\u4f1a\u6709\u5927\u91cf\u8bf7\u6c42\u6d8c\u5165\u6570\u636e\u5e93\u5c42\uff0c\u8fd9\u6837\u5bf9\u6570\u636e\u5e93\u670d\u52a1\u5668\u7684\u538b\u529b\u51b2\u51fb\u5f88\u5927\uff0c\u54cd\u5e94\u901f\u5ea6\u4e5f\u4f1a\u4e0b\u964d\uff0c\u56e0\u6b64\u6dfb\u52a0\u4e2d\u95f4\u7f13\u5b58\u5c42\u5f88\u6709\u5fc5\u8981\u3002<\/p>\n memcached\u662f\u4e00\u5957\u5206\u5e03\u5f0f\u7684\u9ad8\u901f\u7f13\u5b58\u7cfb\u7edf\uff0c\u7531LiveJournal\u7684BradFitzpatrick\u5f00\u53d1\uff0c\u4f46\u76ee\u524d\u88ab\u8bb8\u591a\u7f51\u7ad9\u4f7f\u7528\u4ee5\u63d0\u4ea4\u7f51\u7ad9\u7684\u8bbf\u95ee\u901f\u5ea6\uff0c\u5c24\u5176\u5bf9\u4e8e\u4e00\u4e9b\u5927\u578b\u7684\u3001\u9700\u8981\u9891\u7e41\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u7f51\u7ad9\u8bbf\u95ee\u901f\u5ea6\u63d0\u5347\u6548\u679c\u5341\u5206\u663e\u8457\u3002<\/p>\n \u5de5\u4f5c\u539f\u7406<\/strong><\/p>\n Memcached\u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\u53d1\u5e03\u5f0f\u7684\u5185\u5b58\u5bf9\u8c61\u7f13\u5b58\u7cfb\u7edf\uff0c\u901a\u8fc7\u5728\u5185\u5b58\u91cc\u7ef4\u62a4\u4e00\u4e2a\u7edf\u4e00\u7684\u5de8\u5927\u7684hash\u8868\uff0c\u5b83\u80fd\u591f\u7528\u6765\u5b58\u50a8\u5404\u79cd\u683c\u5f0f\u7684\u6570\u636e\uff0c\u5305\u62ec\u56fe\u7247\u3001\u89c6\u9891\u3001\u6587\u4ef6\u4ee5\u53ca\u6570\u636e\u5e93\u68c0\u7d22\u7684\u7ed3\u679c\u7b49\u3002\u7b80\u5355\u7684\u8bf4\u5c31\u662f\u5c06\u6570\u636e\u8c03\u7528\u5230\u5185\u5b58\uff0c\u7136\u540e\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6\uff0c\u4ece\u800c\u5927\u5927\u63d0\u9ad8\u8bfb\u53d6\u901f\u5ea6\u3002<\/p>\n \u5de5\u4f5c\u6d41\u7a0b<\/strong><\/p>\n \u5148\u68c0\u67e5\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u6570\u636e\u662f\u5426\u5728memcached\u4e2d\uff0c\u5982\u6709\uff0c\u76f4\u63a5\u628a\u8bf7\u6c42\u6570\u636e\u8fd4\u56de\uff0c\u4e0d\u518d\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u4efb\u4f55\u64cd\u4f5c\uff1b\u5982\u679c\u8bf7\u6c42\u7684\u6570\u636e\u4e0d\u5728memcached\u4e2d\uff0c\u5c31\u53bb\u67e5\u6570\u636e\u5e93\uff0c\u628a\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u7684\u6570\u636e\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\uff0c\u540c\u65f6\u628a\u6570\u636e\u7f13\u5b58\u4e00\u4efd\u5230memcached\u4e2d\u3002<\/p>\n \u65b9\u6cd5<\/strong><\/p>\n \u83b7\u53d6\uff1aget(key)<\/p>\n \u8bbe\u7f6e\uff1aset(key, val, expire)<\/p>\n \u5220\u9664\uff1adelete(key)<\/p>\n \u901a\u7528\u7f13\u5b58\u673a\u5236<\/strong><\/p>\n \u7528\u67e5\u8be2\u7684\u65b9\u6cd5\u540d+\u53c2\u6570\u4f5c\u4e3a\u67e5\u8be2\u65f6\u7684key value\u5bf9\u4e2d\u7684key\u503c<\/p>\n \u4e0eMemcached\u7684\u533a\u522b<\/strong><\/p>\n \u6027\u80fd\u76f8\u5dee\u4e0d\u5927<\/p>\n Redis\u57282.0\u7248\u672c\u540e\u589e\u52a0\u4e86\u81ea\u5df1\u7684VM\u7279\u6027\uff0c\u7a81\u7834\u7269\u7406\u5185\u5b58\u7684\u9650\u5236\uff0cMemcached\u53ef\u4ee5\u4fee\u6539\u6700\u5927\u53ef\u7528\u5185\u5b58\uff0c\u91c7\u7528LRU\u7b97\u6cd5<\/p>\n Redis \u4f9d\u8d56\u5ba2\u6237\u7aef\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u8bfb\u5199<\/p>\n Memcached\u672c\u8eab\u6ca1\u6709\u6570\u636e\u5197\u4f59\u673a\u5236<\/p>\n Redis\u652f\u6301\uff08\u5feb\u7167\u3001AOF\uff09\uff0c\u4f9d\u8d56\u5feb\u7167\u8fdb\u884c\u6301\u4e45\u5316\uff0caof\u589e\u5f3a\u4e86\u53ef\u9760\u6027\u7684\u540c\u65f6\uff0c\u4e5f\u5bf9\u6027\u80fd\u6709\u6240\u5f71\u54cd<\/p>\n Memcached\u4e0d\u652f\u6301\u6301\u4e45\u5316\uff0c\u901a\u5e38\u505a\u7f13\u5b58\uff0c\u63d0\u5347\u6027\u80fd<\/p>\n Memcached\u5728\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u7528cas\u4fdd\u8bc1\u4e00\u81f4\u6027\uff0credis\u4e8b\u52a1\u652f\u6301\u6bd4\u8f83\u5f31\uff0c\u53ea\u80fd\u4fdd\u8bc1\u4e8b\u52a1\u4e2d\u7684\u6bcf\u4e2a\u64cd\u4f5c\u8fde\u7eed\u6267\u884c<\/p>\n Redis\u652f\u6301\u591a\u79cd\u7c7b\u7684\u6570\u636e\u7c7b\u578b<\/p>\n Redis \u7528\u4e8e\u6570\u636e\u91cf\u8f83\u5c0f\u7684\u9ad8\u6027\u80fd\u64cd\u4f5c\u548c\u8fd0\u7b97\u4e0a<\/p>\n Memcached\u7528\u4e8e\u5728\u52a8\u6001\u7cfb\u7edf\u4e2d\u51cf\u5c11\u6570\u636e\u5e93\u8d1f\u8f7d\uff0c\u63d0\u5347\u6027\u80fd\uff1b\u9002\u5408\u505a\u7f13\u5b58\uff0c\u63d0\u9ad8\u6027\u80fd<\/p>\n \u4e00\u822c\u9700\u8981\u5728SSH\u547d\u4eca\u4e2d\u5b89\u88c5\uff0c\u5982\u4f60\u5728linux\u547d\u4ee4\u4e0d\u719f\u6089\uff0c\u53ef\u4ee5\u5148\u5b89\u88c5\u7b2c\u4e09\u65b9\u7684\u670d\u52a1\u5668\u7ba1\u7406\u9762\u677f\uff0c\u5982\u5b9d\u5854\u9762\u677f\uff0c\u5728\u901a\u8fc7\u5b9d\u5854\u9762\u677f\u4e2d\u5b89\u88c5Memcached\u5c31\u975e\u5e38\u7b80\u5355\u4e86\uff0c\u53ef\u89c6\u5316\u64cd\u4f5c\uff0c\u70b9\u51fb\u5b89\u88c5\u5373\u53ef\u3002<\/p>\n \u4e50\u9053\u4e3b\u673a\u63d0\u4f9b\u56fd\u5185\/\u7f8e\u56fd\/\u9999\u6e2flinux\u670d\u52a1\u5668<\/a>\uff0c\u53ef\u4ee3\u4e3a\u5b89\u88c5\u5b9d\u5854\u670d\u52a1\u5668\u7ba1\u7406\u9762\u677f<\/p>\n \u4e00\u3001\u4ec0\u4e48\u662f\u6570\u636e\u5e93\u7f13\u5b58 MySQL\u7b49\u4e00\u4e9b\u5e38\u89c1\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u6570\u636e\u90fd\u5b58\u50a8\u518d\u78c1\u76d8\u5f53\u4e2d\uff0c\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u4e1a\u52a1\u5e94\u7528\u5bf9MySQL\u4ea7\u751f\u7684\u589e\u5220\u6539\u67e5\u7684\u64cd\u4f5c\u9020\u6210\u5de8\u5927\u7684I\/O\u5f00\u9500\u548c\u67e5\u8be2\u538b\u529b\uff0c\u8fd9\u65e0\u7591\u5bf9\u6570\u636e\u5e93\u548c\u670d\u52a1\u5668\u90fd\u662f\u4e00\u79cd\u5de8\u5927\u7684\u538b\u529b\uff0c\u4e3a\u4e86\u89e3\u51b3\u6b64\u7c7b\u95ee\u9898\uff0c\u7f13\u5b58\u6570\u636e\u7684\u6982\u5ff5\u5e94\u8fd0\u800c\u751f\u3002 \u6570\u636e\u5e93\u7f13\u5b58\u53ef\u4ee5\u6781\u5927\u5730\u89e3\u51b3\u6570\u636e\u5e93\u670d\u52a1\u5668\u7684\u538b\u529b\uff0c\u63d0\u9ad8\u5e94\u7528\u6570\u636e\u7684\u54cd\u5e94\u901f\u5ea6\u3002 \u5e38\u89c1\u7684\u7f13\u5b58\u5f62\u5f0f\uff1a\u5185\u5b58\u7f13\u5b58\u3001\u6587\u4ef6\u7f13\u5b58\u3002\u8fd9\u91cc\u91cd\u70b9\u8ba8\u8bba\u5185\u5b58\u7f13\u5b58\u3002 \u4e8c\u3001\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528\u7f13\u5b58 \u7f13\u5b58\u6570\u636e\u662f\u4e3a\u4e86\u8ba9\u5ba2\u6237\u7aef\u5f88\u5c11\u751a\u81f3\u4e0d\u8bbf\u95ee\u6570\u636e\u5e93\u670d\u52a1\u5668\u8fdb\u884c\u6570\u636e\u7684\u67e5\u8be2\uff0c\u9ad8\u5e76\u53d1\u4e0b\uff0c\u80fd\u6700\u5927\u7a0b\u5ea6\u5730\u964d\u4f4e\u5bf9\u6570\u636e\u5e93\u670d\u52a1\u5668\u7684\u8bbf\u95ee\u538b\u529b\u3002 \u7528\u6237\u8bf7\u6c42 \u2013> \u6570\u636e\u67e5\u8be2 \u2013>\u8fde\u63a5\u6570\u636e\u5e93\u670d\u52a1\u5668\u5e76\u67e5\u8be2\u6570\u636e \u2013&g… \u9605\u8bfb\u5168\u6587VPS\u670d\u52a1\u5668\u6570\u636e\u5e93\u7f13\u5b58\u5de5\u5177-Memcached<\/span><\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[83],"tags":[],"class_list":["post-3629","post","type-post","status-publish","format-standard","hentry","category-vps","content-layout-excerpt-thumb"],"_links":{"self":[{"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/posts\/3629","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/comments?post=3629"}],"version-history":[{"count":5,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/posts\/3629\/revisions"}],"predecessor-version":[{"id":3635,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/posts\/3629\/revisions\/3635"}],"wp:attachment":[{"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/media?parent=3629"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/categories?post=3629"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/tags?post=3629"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u56db\u3001\u4f7f\u7528Memcached \u7f13\u5b58\u67e5\u8be2\u6570\u636e<\/h2>\n
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