{"id":34659,"date":"2022-12-13T05:53:34","date_gmt":"2022-10-31T18:45:29","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%af%95%e7%9d%80%e9%80%9a%e8%bf%87rails%e4%bd%bf%e7%94%a8memcached%e5%b9%b6%e4%b8%80%e7%9d%b9%e5%85%b6%e7%9c%9f%e8%ba%ab\/"},"modified":"2024-04-29T05:03:40","modified_gmt":"2024-04-28T21:03:40","slug":"%e8%af%95%e7%9d%80%e9%80%9a%e8%bf%87rails%e4%bd%bf%e7%94%a8memcached%e5%b9%b6%e4%b8%80%e7%9d%b9%e5%85%b6%e7%9c%9f%e8%ba%ab","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%af%95%e7%9d%80%e9%80%9a%e8%bf%87rails%e4%bd%bf%e7%94%a8memcached%e5%b9%b6%e4%b8%80%e7%9d%b9%e5%85%b6%e7%9c%9f%e8%ba%ab\/","title":{"rendered":"\u8bd5\u7740\u901a\u8fc7Rails\u4f7f\u7528Memcached\u5e76\u4e00\u7779\u5176\u771f\u8eab"},"content":{"rendered":"<p>\u672c\u6587\u662f\u5bf9\u8fd9\u7bc7\u535a\u5ba2\u6587\u7ae0\u7684\u518d\u63b2\u3002<\/p>\n<h1>\u592a\u957f\uff1b\u4e0d\u770b<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Rails\u306eActiveSupport::Cache::MemCacheStore\u304b\u3089Memcached\u306b\u66f8\u304d\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\u3092\u4ed6\u304b\u3089\u4f7f\u3046\u306e\u306f\u3061\u3087\u3063\u3068\u96e3\u3057\u305d\u3046<\/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\">\u9006\u306bMemcached\u306b\u5165\u3063\u3066\u308bRAW\u306a\u30c7\u30fc\u30bf\u3092Rails\u5074\u3067\u4f7f\u3046\u306e\u306f\u554f\u984c\u306a\u3055\u305d\u3046<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30ad\u30fc\u306e\u9577\u3055\uff08250\u30d0\u30a4\u30c8\u5236\u9650\uff09\u3092\u6c17\u306b\u3057\u306a\u304f\u3066\u3082\u5927\u4e08\u592b<\/ul>\n<hr \/>\n<p>\u8fd9\u91cc\u6240\u8bf4\u7684\u5e76\u4e0d\u662fRails\u4e2d\u7684config.cache_store = :mem_cache_store\uff0c\u800c\u662f\u5173\u4e8e\u5c06\u4efb\u610f\u6570\u636e\u5b58\u5165Memcached\u540e\u4f1a\u53d1\u751f\u4ec0\u4e48\u7684\u8c03\u67e5\u7ed3\u679c\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u8bbf\u95eeMemcache\u7684\u5b9e\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code>[7] pry(main)&gt; a = ActiveSupport::Cache::MemCacheStore.new('localhost:11211', expires_in: 60, namespace: 'NS_ABC', compress: true)\r\n=&gt; #&lt;ActiveSupport::Cache::MemCacheStore:0x00007fc807dba2a0\r\n @data=#&lt;Dalli::Client:0x00007fc807db9e40 @options={}, @ring=nil, @servers=[\"localhost:11211\"]&gt;,\r\n @options={:namespace=&gt;\"NS_ABC\", :expires_in=&gt;60, :compress=&gt;true}&gt;\r\n<\/code><\/pre>\n<p>\u6211\u4f1a\u7a0d\u540e\u8be6\u7ec6\u8ba8\u8bba\uff0c\u4f46\u76ee\u524d\u6765\u770b\uff0c\u5bf9\u4e8e\u547d\u540d\u7a7a\u95f4\u548c\u538b\u7f29\u7684\u6307\u5b9a\u76f8\u5f53\u6709\u610f\u56fe\u3002<\/p>\n<p>\u597d\u5427\uff0c\u8ba9\u6570\u636e\u8fdb\u884c\u7f13\u5b58\u6216\u63d0\u53d6\u975e\u5e38\u7b80\u5355\u3002<\/p>\n<pre class=\"post-pre\"><code>[9] pry(main)&gt; a.write('key', 'val')\r\n=&gt; 5044031582654955520\r\n\r\n[13] pry(main)&gt; a.read('key')\r\n=&gt; \"val\"\r\n<\/code><\/pre>\n<p>\u5982\u679c\u4f7f\u7528\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u952e\u8fdb\u884c\u5f15\u7528\uff0c\u5c06\u8fd4\u56denil\u3002<\/p>\n<pre class=\"post-pre\"><code>[8] pry(main)&gt; a.read('abc')\r\n=&gt; nil\r\n<\/code><\/pre>\n<p>\u597d\u4e86\uff0c\u95f2\u8bdd\u4e0d\u591a\u8bf4\uff0c\u6211\u4eec\u76f4\u63a5\u8fde\u63a5\u5230Memcached\uff0c\u770b\u770b\u5b9e\u9645\u4e0a\u6570\u636e\u662f\u5982\u4f55\u5b58\u50a8\u5728Memcached\u4e0a\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code>[root@localhost ~]# telnet localhost 11211\r\nTrying ::1...\r\nConnected to localhost.\r\nEscape character is '^]'.\r\n<\/code><\/pre>\n<p>\u662f\u7684\uff0c\u6211\u7279\u5730\u4f7f\u7528yum\u5b89\u88c5\u4e86telnet\u5ba2\u6237\u7aef\uff0c\u53ea\u662f\u4e3a\u4e86\u8fd9\u4e2a\u76ee\u7684\u3002<br \/>\n\u73b0\u5982\u4eca\uff0c\u53ef\u80fd\u6ca1\u6709\u5b89\u88c5telnet\u547d\u4ee4\u662f\u6b63\u5e38\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code>stats items\r\nSTAT items:1:number 1\r\nSTAT items:1:age 232\r\nSTAT items:1:evicted 0\r\nSTAT items:1:evicted_nonzero 0\r\n  :\r\n\r\nstats cachedump 4 1\r\nITEM NS_ABC:key [114 b; 1545367943 s]\r\nEND\r\n<\/code><\/pre>\n<p>\u662f\u7684\uff0c\u6211\u7ec8\u4e8e\u627e\u5230\u4e86\u3002<br \/>\n\u4f3c\u4e4e\u5b9e\u9645\u4e0a\u4f1a\u5728\u6307\u5b9a\u7684\u952e\u4e4b\u524d\u81ea\u52a8\u6dfb\u52a0\u547d\u540d\u7a7a\u95f4\u3002<\/p>\n<p>\u65e2\u7136\u8fd9\u6837\uff0c\u6211\u4eec\u662f\u5426\u4e5f\u5e94\u8be5\u83b7\u53d6\u4e00\u4e0b\u503c\u5462\uff1f<\/p>\n<pre class=\"post-pre\"><code>get NS_ABC:key\r\nVALUE NS_ABC:key 1 114\r\no: ActiveSupport::Cache::Entry  :\r\n@version0:@created_atf1545877723.9305558:@expires_in6e1\r\nEND\r\n<\/code><\/pre>\n<p>\u54e6\u3002<br \/>\n\u663e\u793a\u51fa\u4e86\u6211\u5e76\u4e0d\u592a\u7406\u89e3\u7684\u4e1c\u897f\u3002<br \/>\n\u4f46\u662f\uff0c\u9996\u5148\u7684o:\u8868\u793a\u7684\u662f\u5bf9\u8c61\uff0c\u4e4b\u540e\u662f\u7c7b\u578b\uff08\u7c7b\uff09\uff0c\u800c@expires_in\u76846e1\u53ef\u80fd\u662f60\u7684\u6307\u6570\u8868\u793a\u6cd5\u3002<br \/>\n\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u628a\u6570\u636e\u5c01\u88c5\u8fdbActiveSupport::Cache::Entry\u5e76\u8fdb\u884c\u9002\u5f53\u7684\u5e8f\u5217\u5316\uff0c\u5c31\u53ef\u4ee5\u5f97\u5230\u7c7b\u4f3c\u7684\u7ed3\u679c\u3002<\/p>\n<pre class=\"post-pre\"><code>[29] pry(main)&gt; b = ActiveSupport::Cache::Entry.new('val', expires_in: 60)\r\n=&gt; #&lt;ActiveSupport::Cache::Entry:0x00007fc8072b3730 @created_at=1545878427.2002478, @expires_in=60.0, @value=\"val\", @version=nil&gt;\r\n<\/code><\/pre>\n<p>\u54e6\uff0c\u505a\u51fa\u4e86\u4e00\u4e9b\u7c7b\u4f3c\u7684\u4e1c\u897f\u3002<\/p>\n<p>\u770b\u8d77\u6765\u5728\u5e8f\u5217\u5316\u65b9\u9762\uff0c\u4f7f\u7528Marshal\u7c7b\u4f3c\u4e4e\u662f\u4e00\u79cd\u6807\u51c6\u505a\u6cd5\uff0c\u6240\u4ee5\u6211\u5148\u8bd5\u8bd5\u770b\u3002<\/p>\n<pre class=\"post-pre\"><code>[32] pry(main)&gt; Marshal.dump(b)\r\n=&gt; \"\\x04\\bo: ActiveSupport::Cache::Entry\\t:\\v@valueI\\\"\\bval\\x06:\\x06ET:\\r@version0:\\x10@created_atf\\x171545878427.2002478:\\x10@expires_inf\\b6e1\"\r\n<\/code><\/pre>\n<p>\u54e6\uff0c\u770b\u8d77\u6765\u5927\u81f4\u76f8\u540c\u3002<br \/>\n\u8981\u4e0d\u8981\u8bd5\u7740\u76f4\u63a5\u663e\u793a\u51fa\u6765\uff1f<\/p>\n<pre class=\"post-pre\"><code>[33] pry(main)&gt; puts Marshal.dump(b)\r\no: ActiveSupport::Cache::Entry  :\r\n@version0:@created_atf1545878427.2002478:@expires_in6e1\r\n=&gt; nil\r\n<\/code><\/pre>\n<p>\u8fd9\u662f\u4e2a\u5bbe\u679c\u3002<\/p>\n<p>\u867d\u7136Bingo\u5f88\u597d\uff0c\u4f46\u662f\u4eceActiveSupport::Cache::MemCacheStore\u5b58\u5165Memcached\u7684\u6570\u636e\u5728\u5176\u4ed6\u5730\u65b9\u4f7f\u7528\u4f3c\u4e4e\u6709\u4e9b\u96be\u5ea6\u8f83\u9ad8\u3002<\/p>\n<p>\u987a\u4fbf\u95ee\u4e00\u4e0b\u76f8\u53cd\u7684\u60c5\u51b5\u5982\u4f55\u5904\u7406\u5462\uff1f<br \/>\n\u8ba9\u6211\u4eec\u5c1d\u8bd5\u5c06\u6570\u636e\u76f4\u63a5\u5b58\u5165Memcached\uff0c\u7136\u540e\u5728Rails\u7aef\u5f15\u7528\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code>set NS_ABC:hoge 0 60 8\r\nhogehoge\r\nSTORED\r\n\r\n[36] pry(main)&gt; a.read('hoge')\r\n=&gt; \"hogehoge\"\r\n<\/code><\/pre>\n<p>\u597d\u7684\uff0c\u6211\u5df2\u7ecf\u83b7\u53d6\u5230\u4e86\u3002<\/p>\n<p>\u8fd9\u6b21\u6211\u5c06\u5c1d\u8bd5\u5728Memcached\u7aef\u540c\u65f6\u538b\u7f29\u6570\u636e\u3002<\/p>\n<pre class=\"post-pre\"><code>set NS_ABC:hoge 1 60 8\r\nhogehoge\r\nSTORED\r\n\r\n[40] pry(main)&gt; a.read('hoge')\r\n=&gt; nil\r\n<\/code><\/pre>\n<p>\u554a\u5566\uff0c\u770b\u8d77\u6765\u8fd9\u4e0d\u884c\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0cActivesupport::Cache::MemCacheStore\u7684\u538b\u7f29\u9009\u9879\u4f3c\u4e4e\u4e0d\u76f8\u5173\u3002<br \/>\n\u5f53\u6307\u5b9a\u4e3atrue\u65f6\uff0c\u538b\u7f29\u9009\u9879\u4f1a\u5728\u6570\u636e\u5bb9\u91cf\u8d85\u8fc7\u7279\u5b9a\u9608\u503c\uff08\u4e5f\u53ef\u4ee5\u901a\u8fc7compress_threshold\u6307\u5b9a\uff09\u65f6\u8fdb\u884c\u538b\u7f29\u3002<br \/>\n\u8ba9\u6211\u4eec\u8bd5\u4e00\u8bd5\u3002<\/p>\n<pre class=\"post-pre\"><code>[68] pry(main)&gt; a.write('key', 'val' * 1000)\r\n=&gt; 72057594037927936\r\n\r\nget NS_ABC:key\r\nVALUE NS_ABC:key 3 217\r\n.-(\ufffd\/*\ufffd\ufffdrNL\ufffdH\ufffd\ufffdr\ufffd+)\ufffd\ufffd\ufffdv(K\ufffd)MU2\ufffd\ufffd\ufffd\ufffd\ufffd\ufffdfw\ufffd]\u0510r]\ufffd!\u04bb(\ufffd\ufffdy\ufffdq\ufffd\ufffd)\r\n                                                                                C\ufffd\ufffd+^\ufffd\ufffd\u0522&lt;+\ufffd\ufffd\ufffd\u0112\u0514CSS\r\n\r\n                                                                                                            cCCK=\r\n                                                                                                                 3\r\n                                                                                                                  3C\ufffd\ufffd\u050a\ufffd\u0322\ufffd\ufffdTC+Q\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd&amp;\ufffd\ufffdY8&lt;\ufffd\ufffdvpQ4\ufffdF\ufffd(E\ufffdh\ufffd\ufffdA\ufffd\u062c\ufffd\\C@\ufffd\ufffd5%\ufffd\ufffd0\r\n\ufffdEND\r\n<\/code><\/pre>\n<p>\u6211\u4e0d\u592a\u6e05\u695a\uff0c\u4f46\u4f3c\u4e4e\u662f\u88ab\u538b\u7f29\u4e86\u3002<\/p>\n<p>\u6211\u731c\u5e94\u8be5\u662f\u5c06ActiveSupport::Cache::Entry\u5e8f\u5217\u5316\u540e\u8fdb\u884c\u538b\u7f29\u3002<br \/>\n\u8bf4\u5230\u538b\u7f29\uff0c\u5927\u5bb6\u90fd\u559c\u6b22\u7528Deflate\u5bf9\u5427\u3002<br \/>\n\u6211\u8bd5\u4e00\u8bd5\u3002<\/p>\n<pre class=\"post-pre\"><code>[147] pry(main)&gt; puts Zlib::Deflate.deflate( Marshal.dump( ActiveSupport::Cache::Entry.new('val' * 1000, expires_in: 60) ) )\r\n.-(\ufffd\/*\ufffd\ufffdrNL\ufffdH\ufffd\ufffdr\ufffd+)\ufffd\ufffd\ufffdv(K\ufffd)MU2\ufffd\ufffd\ufffd\ufffd\ufffd\ufffdfw\ufffd]\u0510r]\ufffd!\u04bb(\ufffd\ufffdy\ufffdq\ufffd\ufffd)\r\n                                                                                C\ufffd\ufffd+^\ufffd\ufffd\u0522&lt;+\ufffd\ufffd\ufffd\u0112\u0514CSS\r\n\r\n                                                                                                            #\r\n                                                                                                             =CKS3\ufffd\ufffd\u050a\ufffd\u0322\ufffd\ufffdTC+Q\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd&amp;\ufffd\ufffdY8&lt;\ufffd\ufffdvpQ4\ufffdF\ufffd(E\ufffdh\ufffd\ufffdA\ufffd\u062c\ufffd\\C@\ufffd\ufffd5%A\ufffd0\r\n\ufffd=&gt; nil\r\n<\/code><\/pre>\n<p>\u6211\u76f8\u4fe1\u8fd9\u4e2a\u662f\u5bf9\u7684\uff0c\u867d\u7136\u7531\u4e8e\u63a7\u5236\u4ee3\u7801\u6df7\u4e71\uff0c\u663e\u793a\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\u3002\uff08\u8f7b\u58f0\uff09<\/p>\n<p>\u597d\u7684\uff0c\u5173\u4e8eMemcached\uff0c\u5b83\u5bf9\u952e\u7684\u9650\u5236\u662f250\u4e2a\u5b57\u7b26\uff0c\u6211\u4eec\u53ef\u4ee5\u518d\u786e\u8ba4\u4e00\u4e0b\u8fd9\u4e2a\u65b9\u9762\u5417\uff1f<\/p>\n<p>\u5982\u679c\u6709\u6307\u5b9a\u547d\u540d\u7a7a\u95f4\u7684\u8bdd (\u5982\u679c\u6709\u6307\u5b9a\u547d\u540d\u7a7a\u95f4)<\/p>\n<pre class=\"post-pre\"><code>[45] pry(main)&gt; a.write('1234567890' * 30, 'val')\r\n=&gt; 5692549928996306944\r\n\r\nstats cachedump 8 1\r\nITEM NS_ABC:12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456:md5:116b331c40362c11c387c7bf0eaf8295 [114 b; 1545369320 s]\r\nEND\r\n<\/code><\/pre>\n<p>\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u547d\u540d\u7a7a\u95f4\uff0c<\/p>\n<pre class=\"post-pre\"><code>[52] pry(main)&gt; a.write('1234567890' * 30, 'val')\r\n=&gt; 5764607523034234880\r\n\r\nstats cachedump 8 1\r\nITEM 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123:md5:874fa981137f49f7885e1d05a93c21df [114 b; 1545369598 s]\r\nEND\r\n<\/code><\/pre>\n<p>\u660e\u767d\u4e86\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5728&#8221;namespace:\u6307\u5b9a\u7684\u952e&#8221;\u540e\u9762\u6dfb\u52a0\u5404\u81ea\u7684MD5\u503c\uff0c\u4ee5\u786e\u4fdd\u4e0d\u8d85\u8fc7250\u4e2a\u5b57\u7b26\u3002<\/p>\n<pre class=\"post-pre\"><code>[62] pry(main)&gt; Digest::MD5.hexdigest('NS_ABC:' + '1234567890' * 30)\r\n=&gt; \"116b331c40362c11c387c7bf0eaf8295\"\r\n\r\n[63] pry(main)&gt; Digest::MD5.hexdigest('1234567890' * 30)\r\n=&gt; \"874fa981137f49f7885e1d05a93c21df\"\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u4f1a\u81ea\u52a8\u4e3a\u6211\u6dfb\u52a0\u5417\uff1f\u8fd9\u771f\u65b9\u4fbf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u662f\u5bf9\u8fd9\u7bc7\u535a\u5ba2\u6587\u7ae0\u7684\u518d\u63b2\u3002 \u592a\u957f\uff1b\u4e0d\u770b Rails\u306eActiveSupport::Cache::MemCac [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-34659","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 SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u8bd5\u7740\u901a\u8fc7Rails\u4f7f\u7528Memcached\u5e76\u4e00\u7779\u5176\u771f\u8eab - 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