{"id":34474,"date":"2023-02-25T03:51:26","date_gmt":"2023-01-25T21:16:29","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e7%a0%94%e7%a9%b6%e4%ba%86%e4%b8%80%e4%b8%8bmemoist%e5%92%8crails%e7%bc%93%e5%ad%98%ef%bc%8c%e7%9c%8b%e5%93%aa%e4%b8%aa%e6%80%a7%e8%83%bd%e6%9b%b4%e5%a5%bd%e3%80%82\/"},"modified":"2024-04-29T16:09:56","modified_gmt":"2024-04-29T08:09:56","slug":"%e6%88%91%e7%a0%94%e7%a9%b6%e4%ba%86%e4%b8%80%e4%b8%8bmemoist%e5%92%8crails%e7%bc%93%e5%ad%98%ef%bc%8c%e7%9c%8b%e5%93%aa%e4%b8%aa%e6%80%a7%e8%83%bd%e6%9b%b4%e5%a5%bd%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e7%a0%94%e7%a9%b6%e4%ba%86%e4%b8%80%e4%b8%8bmemoist%e5%92%8crails%e7%bc%93%e5%ad%98%ef%bc%8c%e7%9c%8b%e5%93%aa%e4%b8%aa%e6%80%a7%e8%83%bd%e6%9b%b4%e5%a5%bd%e3%80%82\/","title":{"rendered":"\u6211\u7814\u7a76\u4e86\u4e00\u4e0bmemoist\u548cRails\u7f13\u5b58\uff0c\u770b\u54ea\u4e2a\u6027\u80fd\u66f4\u597d"},"content":{"rendered":"<p>\u6211\u8c03\u67e5\u4e86\u4e00\u4e0b\uff0c\u60f3\u77e5\u9053Memoist\u548cRails\u7f13\u5b58\u4e2d\u54ea\u4e2a\u6027\u80fd\u66f4\u597d\u3002<\/p>\n<h2>\u9996\u5148<\/h2>\n<p>\u5728Rails\u4e2d\uff0c\u5373\u4f7f\u6211\u4eec\u5728\u4e3b\u6570\u636e\u5e93\u4e0a\u591a\u6b21\u6267\u884c\u76f8\u540c\u7684\u67e5\u8be2\u6216\u8005\u4f7f\u7528includes\u6765\u89e3\u51b3N+1\u95ee\u9898\uff0c\u6700\u7ec8\u53ef\u80fd\u4ecd\u4f1a\u53d1\u51fa\u5927\u578b\u7684SQL\u67e5\u8be2\uff0c\u6548\u7387\u5e76\u4e0d\u9ad8\u7684\u60c5\u51b5\u4e5f\u662f\u5b58\u5728\u7684\u3002<\/p>\n<p>\u6211\u8bd5\u8fc7\u4f7f\u7528\u4e00\u79cd\u540d\u4e3amemoist\u7684\u65b9\u6cd5\u5c06\u6570\u636e\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\u4ee5\u4fbf\u518d\u6b21\u5229\u7528\uff0c\u4f46\u662f\u6211\u6000\u7591\u662f\u5426\u4f7f\u7528\u666e\u901a\u7684Rails\u81ea\u5e26\u7684Low-Level Caching\u529f\u80fd\u4e5f\u4e0d\u4f1a\u6709\u592a\u5927\u7684\u6027\u80fd\u5dee\u5f02\u3002\u56e0\u6b64\u6211\u8fdb\u884c\u4e86\u6d4b\u8bd5\uff0c\u5728\u6211\u4eec\u8fd0\u8425\u7684\u670d\u52a1\u4e2d\u51b3\u5b9a\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u3002<\/p>\n<p>\u203bRails\u7684\u7f13\u5b58\u4f7f\u7528memcache<\/p>\n<h2>\u9a8c\u8bc1\u73af\u5883<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">OS: MacOSX 10.10<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Rails version: 4.2<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">memoist version: 0.12.0<\/ul>\n<h2>\u6837\u672c\u4ee3\u7801<\/h2>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">SampleCode<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">ActiveRecord<\/span><span class=\"o\">::<\/span><span class=\"no\">Base<\/span>\r\n\r\n  <span class=\"c1\">#\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308bSampleCode\u30e2\u30c7\u30eb\u306e\u30b3\u30fc\u30c9\u7fa4<\/span>\r\n  <span class=\"vc\">@@cached_codes<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"no\">AAA<\/span><span class=\"p\">,<\/span> <span class=\"no\">BBB<\/span><span class=\"p\">,<\/span> <span class=\"no\">CCC<\/span><span class=\"p\">,<\/span> <span class=\"no\">DDD<\/span><span class=\"p\">,<\/span> <span class=\"no\">EEE<\/span><span class=\"p\">].<\/span><span class=\"nf\">map!<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"ss\">:freeze<\/span><span class=\"p\">).<\/span><span class=\"nf\">freeze<\/span>\r\n\r\n  <span class=\"c1\"># \u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9\u306e\u30e1\u30e2\u5316<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"o\">&lt;&lt;<\/span> <span class=\"nb\">self<\/span>\r\n    <span class=\"kp\">extend<\/span> <span class=\"no\">Memoist<\/span>\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">plan_ids<\/span>\r\n      <span class=\"no\">SampleCode<\/span><span class=\"p\">(<\/span><span class=\"ss\">code: <\/span><span class=\"vc\">@@cached_codes<\/span><span class=\"p\">).<\/span><span class=\"nf\">pluck<\/span><span class=\"p\">(<\/span><span class=\"ss\">:id<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">end<\/span>\r\n    <span class=\"n\">memoize<\/span> <span class=\"ss\">:plan_ids<\/span>\r\n  <span class=\"k\">end<\/span>\r\n\r\n  <span class=\"c1\">#\u3000\u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9\u3067\u3001Low-Level Caching\u3092\u5229\u7528<\/span>\r\n  <span class=\"k\">def<\/span> <span class=\"nc\">self<\/span><span class=\"o\">.<\/span><span class=\"nf\">plan_ids_cache<\/span>\r\n    <span class=\"no\">Rails<\/span><span class=\"p\">.<\/span><span class=\"nf\">cache<\/span><span class=\"p\">.<\/span><span class=\"nf\">fetch<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"plan_ids_cache_key\"<\/span><span class=\"p\">,<\/span> <span class=\"ss\">expires_in: <\/span><span class=\"mi\">1<\/span><span class=\"p\">.<\/span><span class=\"nf\">day<\/span><span class=\"p\">)<\/span> <span class=\"k\">do<\/span>\r\n      <span class=\"no\">SampleCode<\/span><span class=\"p\">(<\/span><span class=\"ss\">code: <\/span><span class=\"vc\">@@cached_codes<\/span><span class=\"p\">).<\/span><span class=\"nf\">pluck<\/span><span class=\"p\">(<\/span><span class=\"ss\">:id<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">end<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<h2>\u6d4b\u91cf<\/h2>\n<p>\u542f\u52a8Rails\u63a7\u5236\u53f0\u5e76\u5c06\u4e0b\u9762\u7684\u9a8c\u8bc1\u4ee3\u7801\u590d\u5236\u5e76\u6267\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code>&gt; bin\/rails console \r\n<\/code><\/pre>\n<p>\u83b7\u53d6\u5b58\u653e\u4e865\u4e2a\u6574\u6570\u7684\u6570\u7ec4\u7684\u65b9\u6cd5\u4f7f\u7528memoist\u7684\u60c5\u51b5\u4e0b\u548c\u4f7f\u7528\u4f4e\u7ea7\u7f13\u5b58\u7684\u60c5\u51b5\u4e0b\uff0c\u4ee5\u53ca\u6700\u540e\u901a\u8fc7\u666e\u901a\u7684ActiveRecord\u83b7\u53d6\u6570\u636e\u7684\u60c5\u51b5\u4e0b\uff0c\u91cd\u590d1000\u6b21\u3002<\/p>\n<p>\u7531\u4e8e\u57fa\u51c6\u6d4b\u8bd5\u7684\u6267\u884c\u6b21\u6570\u4e66\u5199\u65b9\u5f0f\u6709\u8bef\uff0c\u5df2\u7ecf\u8fdb\u884c\u4fee\u6b63\u3002<\/p>\n<pre class=\"post-pre\"><code># \u958b\u5b9f\u884c\u3059\u308b\r\nrequire \"benchmark\"\r\n\r\n#\u8a66\u884c\u56de\u6570\r\nnum = 1000\r\n\r\nplan_code = [AAA, BBB, CCC, DDD, EEE].map!(&amp;:freeze).freeze\r\n\r\nreport = Benchmark.bm do |r|\r\n  r.report \"memo\" do\r\n    num.times { SampleCode.plan_ids }\r\n  end\r\n  r.report \"cache\" do\r\n    num.times { CampaignCode.plan_ids_cache }\r\n  end\r\n  # ActiveRecord\u3067\u7d20\u3067\u3068\u3063\u305f\u5834\u5408\r\n  r.report \"ar original\" do\r\n    num.times { SampleCode.where(code: plan_code).pluck(:id) }\r\n  end\r\nend\r\n\r\n\r\n# \u30ed\u30fc\u30ab\u30eb\u74b0\u5883\u5b9f\u884c\u7d50\u679c(memcached\u3082\u30ed\u30fc\u30ab\u30eb\u30b5\u30fc\u30d0\u3067\u52d5\u3044\u3066\u3044\u308b)\r\n=&gt;\r\n            user     system   total   real\r\nmemo        0.0200   0.0100   0.0300 (0.0332)\r\ncache       0.3299   0.2200   0.5499 (1.1794)\r\nar original 1.6600   0.2500   1.9100 (4.5657)\r\n\r\n\r\n=&gt;\r\n\r\n# Staging\u74b0\u5883\u5b9f\u884c\u7d50\u679c(\u30b5\u30fc\u30d0\u306fHeroku, memcached\u306f\u30a2\u30c9\u30aa\u30f3\u52d5\u3044\u3066\u3044\u308b)\r\n\r\n            user     system   total   real\r\nmemo        0.0099   0.0      0.0099 (0.1472)\r\ncache       0.5000   0.1499   0.6499 (3.6802)\r\nar original 1.1500   0.1699   1.3200 (3.3467)\r\n\r\n\r\n<\/code><\/pre>\n<h2>\u8003\u5bdf ch\u00e1)<\/h2>\n<p>\u5982\u679c\u4f7f\u7528memoist\uff0c\u76f8\u6bd4\u76f4\u63a5\u901a\u8fc7ActiveRecord\u83b7\u53d6\u7f13\u5b58\uff0c\u91c7\u7528\u4f4e\u7ea7\u522b\u7f13\u5b58\u7684\u901f\u5ea6\u660e\u663e\u66f4\u5feb\uff0c\u672c\u5730\u73af\u5883\u5feb5\u500d\u4ee5\u4e0a\uff0cstaging\u73af\u5883\u5feb2\u500d\u4ee5\u4e0a\u3002<\/p>\n<p>\u5728Staging\u73af\u5883\u8fdb\u884c\u6d4b\u8bd5\u65f6\uff0c\u5c3d\u7ba1memcached\u653e\u5728\u53e6\u4e00\u53f0\u670d\u52a1\u5668\u4e0a\u4f1a\u5b58\u5728\u989d\u5916\u7684\u5f00\u9500\uff0c\u4f46\u7ed3\u679c\u51fa\u5947\u5730\u597d\uff08\u751a\u81f3\u8ba9\u6211\u5bf9Heroku\u7684\u901f\u5ea6\u611f\u5230\u60ca\u8bb6\uff09\u3002<\/p>\n<p>\u5bf9\u4e8ememoist\u800c\u8a00\uff0c\u5b83\u5c06\u6570\u636e\u4fdd\u5b58\u5728\u670d\u52a1\u5668\u5185\u5b58\u4e2d\uff1b\u800c\u5bf9\u4e8e\u4f4e\u7ea7\u7f13\u5b58\uff08Low-Level Caching\uff09\uff0c\u5219\u53ef\u4ee5\u5c06\u7f13\u5b58\u7684\u503c\u59d4\u6258\u7ed9memcache\uff0c\u56e0\u6b64\u4ece\u5185\u5b58\u4f7f\u7528\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u4f4e\u7ea7\u7f13\u5b58\u5177\u6709\u4f18\u52bf\u3002<\/p>\n<h2>\u5f97\u51fa\u7ed3\u8bba<\/h2>\n<p>\u6839\u636e\u4f7f\u7528\u60c5\u51b5\uff0c\u6211\u4eec\u51b3\u5b9a\u4f7f\u7528memoist\u548c\u4f4e\u7ea7\u7f13\u5b58\u6765\u8fbe\u5230\u4e0d\u540c\u7684\u76ee\u7684\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">memoist\u3000\u306f\u30d0\u30c3\u30c1\u51e6\u7406\u306a\u3069\u4e00\u6c17\u306b\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306b\u7528\u3044\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Low-Level Caching\u306f\u30e6\u30fc\u30b6\u304c\u3088\u304f\u53c2\u7167\u3059\u308b\u753b\u9762\u3067\u5fc5\u8981\u306a\u60c5\u5831\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b<\/ul>\n<h4>\u53c2\u8003\u6587\u732e<\/h4>\n<p>\u4f7f\u7528 Ruby \u8fdb\u884c\u57fa\u51c6\u6d4b\u8bd5\u7684\u65b9\u6cd5<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u8c03\u67e5\u4e86\u4e00\u4e0b\uff0c\u60f3\u77e5\u9053Memoist\u548cRails\u7f13\u5b58\u4e2d\u54ea\u4e2a\u6027\u80fd\u66f4\u597d\u3002 \u9996\u5148 \u5728Rails\u4e2d\uff0c\u5373\u4f7f\u6211\u4eec\u5728\u4e3b\u6570\u636e\u5e93\u4e0a [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-34474","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast 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