{"id":1556,"date":"2006-12-05T23:57:23","date_gmt":"2006-12-05T15:57:23","guid":{"rendered":"http:\/\/ihower.idv.tw\/blog\/archives\/1556"},"modified":"2015-09-05T10:49:39","modified_gmt":"2015-09-05T02:49:39","slug":"dhh-talks-ruby-performance","status":"publish","type":"post","link":"https:\/\/ihower.tw\/blog\/1556-dhh-talks-ruby-performance","title":{"rendered":"DHH\u8ac7Ruby\u6548\u80fd"},"content":{"rendered":"<p>\u4e0a\u6b21\u7684\u9019\u7bc7 <a href=\"\/blog\/archives\/1537\">Joel\u8ac7Ruby\u6548\u80fd<\/a> \u5176\u5be6DHH(RoR\u767c\u660e\u4eba)\u4e5f\u6709\u6587\u7ae0\u56de\u61c9(\u53cd\u64ca?)\uff0c\u6211\u89ba\u5f97\u66f4\u70ba\u516c\u5141\u5be6\u5728&#8230;:p\u3002\u6458\u8981\u91cd\u9ede\u7ffb\u8b6f\u5982\u4e0b:<\/p>\n<p><a href=\"http:\/\/www.loudthinking.com\/arc\/000598.html\">Outsourcing the performance-intensive functions<\/a>\u00a0(\u628a\u6548\u80fd\u5bc6\u96c6\u7684\u7a0b\u5f0f\u5916\u5305\u51fa\u53bb)<\/p>\n<p>\u6bcf\u7a2e\u7a0b\u5f0f\u8a9e\u8a00\u672c\u4f86\u5c31\u6709\u4e0d\u540c\u64c5\u9577\u7684\u5730\u65b9\uff0c\u4f8b\u5982 Yahoo \u8ddf Amazon \u5c31\u6703\u4f7f\u7528 C++\u6216 Java \u4f86\u8655\u7406 back-ends\uff0c\u800c\u5728\u524d\u53f0\u4f7f\u7528PHP\u6216Perl\u3002\u800c\u5728 <a href=\"http:\/\/www.basecamphq.com\/\">Basecamp<\/a> \u4e2d\uff0c\u7e2e\u5716\u7a0b\u5f0f\u9577\u9019\u6a23<\/p>\n<blockquote><p><code>def thumbnail(temp, target)<br \/>\n\u00a0 system(<br \/>\n\u00a0\u00a0\u00a0 \"\/usr\/local\/bin\/convert #{escape(temp)} -resize 48x48! #{escape(target)}\"<br \/>\n\u00a0 )<br \/>\nend<\/code><\/p><\/blockquote>\n<p>\u770b\u8d77\u4f86\u6709\u9ede\u4f5c\u5f0a\uff0cRuby\u7adf\u7136\u76f4\u63a5\u547c\u53eb imageMagicK \u6307\u4ee4\u3002\u4f46\u662f\u9019\u4e0d\u5c31\u662f\u70ba\u4ec0\u9ebc\u53eb\u505a scripting language \u7684\u539f\u56e0\u55ce?\u6211\u5011\u4e0d\u7528\u767c\u660e\u7e2e\u5716\u7a0b\u5f0f\uff0c\u56e0\u70ba\u6709\u4eba\u5df2\u7d93\u7528C\u5beb\u597d\u66f4\u5feb\u7684\u4e86\uff0c\u540c\u7406 \u00a0Bayesian filter \u4e5f\u662f\uff0c\u5df2\u7d93\u6709\u4eba\u7528\u5176\u4ed6\u66f4\u5feb\u7684\u7a0b\u5f0f\u8a9e\u8a00\u5beb\u597d\uff0c\u4f60\u53ea\u9700\u8981\u547c\u53eb\u5373\u53ef\uff0c\u800c\u4e14\u9019\u4e9b\u5e38\u5e38\u90fd\u6709\u4eba\u5beb\u597d wrappers\u4e86\uff0c\u4f8b\u5982 <a href=\"http:\/\/rmagick.rubyforge.org\/\">RMagick<\/a>\u3001<a href=\"http:\/\/tmtm.org\/en\/mysql\/ruby\/\">MySQL\/Ruby<\/a>\u3002<\/p>\n<p>\u4f60\u4e0d\u5fc5\u53ea\u9650\u5236\u5728\u53ea\u80fd\u4e00\u7a2e\u7a0b\u5f0f\u8a9e\u8a00\u4f86\u958b\u767c\uff0c\u5728\u5927\u90e8\u5206\u60c5\u6cc1\u4e0b\u4f7f\u7528\u6709\u9ad8\u5ea6 productivity \u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u7136\u5f8c\u628a\u6709\u74f6\u9838(bottlenecks)\u7684\u90e8\u4efd\u5916\u5305(outsource)\u7d66\u5df2\u7d93\u7528\u66f4\u5feb\u7684\u7a0b\u5f0f\u8a9e\u8a00\u5beb\u597d\u7684\u5957\u4ef6(packages)\uff0c\u6216\u662f\u81ea\u5df1\u5beb\u9700\u8981\u7684\u64f4\u5145(extension)\u3002<\/p>\n<p>\u6211\u5011\u5728 <a href=\"http:\/\/www.campfirenow.com\/\">Campfire<\/a>\u00a0\u4e5f\u78b0\u5230\u660e\u986f\u7684\u74f6\u9838 bottleneck\uff0c\u4e0a\u767e\u500b\u4f7f\u7528\u8005\u6bcf\u9694\u4e09\u79d2\u5c31\u8981\u540c\u6642\u8981\u66f4\u65b0\u8cc7\u6599\uff0c\u672c\u4f86\u7528100\u884c\u7684Ruby code\uff0c\u5f8c\u4f86\u6539\u5beb\u6210300\u884c\u7684C\u3002\u6574\u500b\u5c08\u6848\u4fdd\u6301 90% \u7684 Ruby code\uff0c\u628a\u74f6\u9838 bottleneck\u90fd\u5916\u5305\u7d66 C\u3002\u5047\u8a2d\u70ba\u4e86\u7372\u5f97\u6700\u5927\u6548\u80fd(performance)\u800c\u5168\u90e8\u7528C\u5beb\uff0c\u90a3\u5927\u6982\u6703\u767c\u760b\u5427\u3002<\/p>\n<p>\u6240\u4ee5\u4e0d\u8981\u8b93\u74f6\u9838 bottlenecks (\u4e0d\u7ba1\u662f\u771f\u7684\u6216\u60f3\u50cf\u4e2d\u7684\u74f6\u9838\uff0c\u901a\u5e38\u9084\u662f\u5f8c\u8005) \u4f86\u652f\u914d\u4f60\u7684\u8edf\u9ad4\u958b\u767c\u74b0\u5883\u9078\u64c7\u8003\u91cf\u3002\u6709\u500b\u8a5e\u9019\u6a23\u63cf\u8ff0\u90a3\u6a23\u7684\u60c5\u6cc1\uff0c\u7a31\u4f5c &#8220;premature optimization&#8221;\u3002(\u8cbf\u7136\u5be6\u65bd\u6700\u4f73\u5316\uff0c\u662f\u5404\u7a2e\u50b7\u5bb3\u7684\u6839\u6e90)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0a\u6b21\u7684\u9019\u7bc7 Joel\u8ac7Ruby\u6548\u80fd \u5176\u5be6DHH(RoR\u767c\u660e\u4eba)\u4e5f\u6709\u6587\u7ae0\u56de\u61c9(\u53cd\u64ca?)\uff0c\u6211\u89ba\u5f97\u66f4\u70ba\u516c\u5141\u5be6\u5728&#038;#8 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/ihower.tw\/blog\/1556-dhh-talks-ruby-performance\" class=\"more-link\">\u95b1\u8b80\u5168\u6587<span class=\"screen-reader-text\">\u3008DHH\u8ac7Ruby\u6548\u80fd\u3009<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5,53,31],"tags":[],"class_list":["post-1556","post","type-post","status-publish","format-standard","hentry","category-programming","category-rails","category-ruby","entry"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1q6tG-p6","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/posts\/1556","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/comments?post=1556"}],"version-history":[{"count":2,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/posts\/1556\/revisions"}],"predecessor-version":[{"id":8286,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/posts\/1556\/revisions\/8286"}],"wp:attachment":[{"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/media?parent=1556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/categories?post=1556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/tags?post=1556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}