{"id":4770,"date":"2022-10-03T15:50:31","date_gmt":"2022-10-03T07:50:31","guid":{"rendered":"https:\/\/www.chenqing.work\/?p=4770"},"modified":"2022-10-05T10:30:21","modified_gmt":"2022-10-05T02:30:21","slug":"%e8%af%bb-a-philosophy-of-software-design","status":"publish","type":"post","link":"https:\/\/www.chenqing.work\/?p=4770","title":{"rendered":"\u8bfb | A Philosophy of Software Design"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1439\" src=\"https:\/\/www.chenqing.work\/wp-content\/uploads\/2022\/10\/michael-kurzynowski-1SqNDK2pyG4-unsplash.jpg\" alt=\"\" class=\"wp-image-4774\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u8f6f\u4ef6\u7684\u590d\u6742\u6027<\/h2>\n\n\n\n<p>\u4ec0\u4e48\u662f\u590d\u6742\u6027\uff1f<\/p>\n\n\n\n<p>\u4e3e\u4e2a\u76f4\u89c2\u7684\u4f8b\u5b50\uff1a1+1+1+1 \u663e\u7136\u6bd4 1+1 \u8981\u590d\u6742\u4e00\u70b9\uff0c1+2+3+4 \u663e\u7136\u53c8\u6bd4 1+1+1+1 \u8981\u590d\u6742\u4e00\u70b9\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u53ef\u4ee5\u603b\u7ed3\u4e24\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u66f4\u5927\u7684\u80fd\u529b\u5e26\u6765\u66f4\u5927\u7684\u590d\u6742\u6027\uff1b<\/li><li>\u6574\u4f53\u7684\u590d\u6742\u6027\u4e3a\u5404\u5c40\u90e8\u590d\u6742\u6027\u7684\u52a0\u6743\u548c\u3002<\/li><\/ol>\n\n\n\n<p><strong>\u76f4\u89c2\u5730\u8bf4\uff0c\u5bf9\u4e8e\u8f6f\u4ef6\u7cfb\u7edf\uff0c\u5982\u679c\u96be\u4e8e\u7406\u89e3\u548c\u4fee\u6539\uff0c\u90a3\u4e48\u5b83\u5c31\u662f\u590d\u6742\u7684<\/strong>\u3002<\/p>\n\n\n\n<p>\u6709\u4e09\u4e2a\u75c7\u72b6\u53ef\u4ee5\u8bca\u65ad\u7cfb\u7edf\u7684\u590d\u6742\u6027\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u53d8\u66f4\u653e\u5927<\/strong>\uff0c\u4e00\u4e2a\u7b80\u5355\u7684\u53d8\u66f4\u9700\u8981\u4fee\u6539\u5f88\u591a\u4e0d\u540c\u7684\u5730\u65b9\uff1b<\/li><li><strong>\u8ba4\u77e5\u8d1f\u62c5<\/strong>\uff0c\u5b8c\u6210\u4e00\u9879\u4efb\u52a1\u9700\u8981\u7406\u89e3\u5f88\u591a\u4e1c\u897f\uff1b<\/li><li><strong>\u4e0d\u77e5\u9053\u81ea\u5df1\u4e0d\u77e5\u9053<\/strong>\uff0c\u9700\u8981\u4fee\u6539\u54ea\u5757\u4ee3\u7801\u6216\u638c\u63e1\u54ea\u4e9b\u4fe1\u606f\u5e76\u4e0d\u660e\u786e\u3002<\/li><\/ul>\n\n\n\n<p>\u6211\u60f3\u5927\u5bb6\u5728\u9879\u76ee\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u90fd\u9047\u5230\u8fc7\u8fd9\u79cd\u60c5\u51b5\uff0c\u660e\u660e\u770b\u8d77\u6765\u662f\u4e00\u4e2a\u5f88\u7b80\u5355\u7684\u4fee\u6539\uff0c\u4f46\u5b9e\u9645\u6539\u8d77\u6765\u5374\u53d1\u73b0\u662f\u4e00\u4e2a\u5927\u5de5\u7a0b\u2014\u2014\u6700\u8fd1\u7684\u4e00\u4e2a\u9879\u76ee\u5c31\u6709\u8fd9\u79cd\u611f\u53d7\u3002\u7ec6\u7a76\u8d77\u6765\u4e0d\u5916\u4e4e\u4e24\u79cd\u539f\u56e0\uff1a1\u3001\u8fd9\u4e2a\u4fee\u6539\u672c\u8eab\u7684\u6280\u672f\u5185\u6db5\u6bd4\u8f83\u590d\u6742\uff1b2\u3001\u7cfb\u7edf\u539f\u6765\u7684\u8bbe\u8ba1\u6709\u95ee\u9898\uff0c\u5bfc\u81f4\u540e\u7eed\u4fee\u6539\u7275\u4e00\u53d1\u800c\u52a8\u5168\u8eab\u3002\u8fd9\u4e2a\u76f4\u89c2\u5b9a\u4e49\u8fd8\u53ef\u4ee5\u653e\u5927\u5230\u6574\u4e2a\u7814\u53d1\u4f53\u7cfb\uff0c\u5982\u679c\u6574\u4e2a\u4f53\u7cfb\u96be\u4e8e\u7406\u89e3\u548c\u6267\u884c\u53d8\u66f4\uff0c\u90a3\u4e48\u5b83\u5c31\u662f\u590d\u6742\u7684\u3002\u590d\u6742\u7cfb\u7edf\u6700\u5927\u7684\u95ee\u9898\u662f\u4e8b\u500d\u529f\u534a\u3002<\/p>\n\n\n\n<p>\u5bfc\u81f4\u590d\u6742\u6027\u7684\u539f\u56e0\u6709\u4e24\u4e2a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u4f9d\u8d56<\/strong>\uff08\u53ef\u4ee5\u7406\u89e3\u4e3a\u8026\u5408\uff09\uff0c\u4e00\u4e2a\u4ee3\u7801\u5757 A \u4e0d\u80fd\u88ab\u5355\u72ec\u5730\u7406\u89e3\u548c\u4fee\u6539\uff0c\u5fc5\u987b\u8981\u7ed3\u5408 B\uff0c\u90a3\u4e48 A\u3001B 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method\u3001class\u3001module\u3001service\u3001subsystem \u7b49\u90fd\u89c6\u4e3a\u6a21\u5757\u3002<\/p>\n\n\n\n<p><strong>\u6a21\u5757\u8981\u6df1<\/strong><\/p>\n\n\n\n<p>\u5728\u73b0\u5b9e\u7684\u6a21\u5757\u5316\u7f16\u7a0b\u4e2d\uff0c\u5f00\u53d1\u4e00\u4e2a\u6a21\u5757\u662f\u4e3a\u4e86\u63d0\u4f9b\u7ed9\u522b\u7684\u6a21\u5757\u7528\uff0c\u6240\u4ee5\u5e94\u5305\u542b\u4e24\u90e8\u5206\uff1a\u5bf9\u5916\u7684\u58f0\u660e\uff08interface\uff09\u548c\u5bf9\u5185\u7684\u5b9e\u73b0\uff08implementation\uff09\u3002interface \u662f\u5bf9\u672c\u6a21\u5757\u80fd\u529b\u7684\u62bd\u8c61\uff0c\u662f\u5176\u4ed6\u6a21\u5757\u5728\u4f7f\u7528\u8be5\u6a21\u5757\u65f6\u9700\u8981\u77e5\u9053\u7684\u4fe1\u606f\uff0c\u5e94\u8be5\u8bbe\u8ba1\u5f97\u6bd4 implementation \u7b80\u5355\u5f97\u591a\u3002interface \/ implementation \u8d8a\u5c0f\uff0c\u6a21\u5757\u7684\u6df1\u5ea6\u5c31\u8d8a\u6df1\uff0c\u5426\u5219\u5c31\u8d8a\u6d45\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"251\" height=\"159\" src=\"https:\/\/www.chenqing.work\/wp-content\/uploads\/2022\/10\/image-2.png\" alt=\"\" class=\"wp-image-4834\"\/><\/figure>\n\n\n\n<p>\u5728\u8bbe\u8ba1\u6a21\u5757\u65f6\uff0c\u5e94\u8be5\u5c3d\u91cf\u8bbe\u8ba1\u6df1\u5ea6\u6a21\u5757\uff0c\u4e0d\u91cd\u8981\u7684\u5185\u5bb9\u90fd\u62bd\u8c61\u6389\uff0c\u5c3d\u91cf\u51cf\u5c11\u76f8\u4e92\u4e4b\u95f4\u7684\u4f9d\u8d56\uff0c\u60f3\u60f3\u5982\u679c interface \u548c implementation 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\u529f\u529b\u4e86\u3002<\/p>\n\n\n\n<p><strong>\u4fe1\u606f\u9690\u85cf<\/strong><\/p>\n\n\n\n<p>\u5b9e\u73b0\u6df1\u5ea6\u6a21\u5757\u91c7\u7528\u7684\u65b9\u6cd5\u5c31\u662f\u4fe1\u606f\u9690\u85cf\u3002\u4fe1\u606f\u9690\u85cf\u5c06\u6a21\u5757\u7684\u80fd\u529b\u7b80\u5316\u4e3a\u7b80\u5355\u7684 interface\uff0c\u51cf\u8f7b\u4e86\u8ba4\u77e5\u8d1f\u62c5\u3002\u540c\u65f6\u88ab\u9690\u85cf\u6389\u7684\u5b9e\u73b0\u7ec6\u8282\u5373\u4f7f\u53d1\u751f\u53d8\u5316\uff0c\u56e0\u4e3a interface \u4e0d\u53d8\uff08\u6ce8\u610f SLA \u627f\u8bfa\uff09\uff0c\u5176\u4ed6\u6a21\u5757\u4e5f\u4e0d\u53d7\u5f71\u54cd\uff0c\u4f7f\u5f97\u7cfb\u7edf\u66f4\u5bb9\u6613\u8fdb\u5316\u3002\u4f8b\u5982\u6211\u4eec\u8c03\u7528\u7684 restful 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CPU \u5077\u5077\u5e72\u7684\u5206\u652f\u9884\u6d4b\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u6a21\u5757\u5206\u4e3a interface \u548c implementation \u4e24\u90e8\u5206\uff0c\u6240\u4ee5\u8fd9\u91cc\u7684\u5efa\u8bae\u662f\uff1a<strong>\u6cdb\u5316 interface<\/strong> + <strong>\u7279\u5316 implementation<\/strong>\u3002<\/p>\n\n\n\n<p>\u901a\u8fc7\u7279\u5316\u7684 implementation \u6765\u6ee1\u8db3\u5f53\u524d\u7684\u9700\u6c42\uff0c\u901a\u8fc7\u6cdb\u5316\u7684 interface 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