{"id":719,"date":"2026-03-27T14:05:52","date_gmt":"2026-03-27T14:05:52","guid":{"rendered":"https:\/\/www.visualize-ai.com\/vi\/practical-checklist-object-oriented-design-reviews\/"},"modified":"2026-03-27T14:05:52","modified_gmt":"2026-03-27T14:05:52","slug":"practical-checklist-object-oriented-design-reviews","status":"publish","type":"post","link":"https:\/\/www.visualize-ai.com\/vi\/practical-checklist-object-oriented-design-reviews\/","title":{"rendered":"M\u1ed9t danh s\u00e1ch ki\u1ec3m tra th\u1ef1c t\u1ebf cho c\u00e1c cu\u1ed9c ki\u1ec3m tra thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng th\u00e0nh c\u00f4ng"},"content":{"rendered":"<p>Ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng m\u1ea1nh m\u1ebd n\u00e0o. Khi c\u00e1c \u0111\u1ed9i ng\u0169 \u0111\u1ea7u t\u01b0 th\u1eddi gian v\u00e0o Ph\u00e2n t\u00edch v\u00e0 Thi\u1ebft k\u1ebf H\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng (OOAD), m\u1ee5c ti\u00eau l\u00e0 t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng d\u1ec5 b\u1ea3o tr\u00ec, m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu t\u1ed1t. Tuy nhi\u00ean, m\u1ed9t t\u00e0i li\u1ec7u thi\u1ebft k\u1ebf hay m\u1ed9t b\u1ed9 s\u01a1 \u0111\u1ed3 l\u1edbp ch\u1ec9 c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng m\u1ee9c \u0111\u1ed9 ki\u1ec3m tra m\u00e0 n\u00f3 ph\u1ea3i ch\u1ecbu \u0111\u1ef1ng. Vi\u1ec7c ki\u1ec3m tra thi\u1ebft k\u1ebf kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 th\u1ee7 t\u1ee5c h\u00ecnh th\u1ee9c; \u0111\u00f3 l\u00e0 \u0111i\u1ec3m ki\u1ec3m tra quan tr\u1ecdng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c khi\u1ebfm khuy\u1ebft tr\u01b0\u1edbc khi tri\u1ec3n khai b\u1eaft \u0111\u1ea7u. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t danh s\u00e1ch ki\u1ec3m tra to\u00e0n di\u1ec7n v\u00e0 th\u1ef1c t\u1ebf \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c ki\u1ec3m tra thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng hi\u1ec7u qu\u1ea3.<\/p>\n<p>B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau ch\u00ed \u0111\u00e1nh gi\u00e1 c\u00f3 c\u1ea5u tr\u00fac, c\u00e1c \u0111\u1ed9i ng\u0169 c\u00f3 th\u1ec3 gi\u1ea3m n\u1ee3 k\u1ef9 thu\u1eadt, c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng m\u00e3 ngu\u1ed3n v\u00e0 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u kinh doanh. C\u00e1c ph\u1ea7n ti\u1ebfp theo s\u1ebd n\u00eau chi ti\u1ebft c\u00e1c khu v\u1ef1c c\u1ea7n ki\u1ec3m tra, \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi c\u00e1c c\u00e2u h\u1ecfi v\u00e0 ti\u00eau ch\u00ed c\u1ee5 th\u1ec3 \u0111\u1ec3 h\u01b0\u1edbng d\u1eabn quy tr\u00ecnh ki\u1ec3m tra c\u1ee7a b\u1ea1n.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic illustrating a practical 10-point checklist for successful object-oriented design reviews, featuring SOLID principles pillars, coupling and cohesion metrics, class responsibility guidelines, inheritance best practices, encapsulation rules, error handling strategies, testability considerations, documentation standards, common pitfalls to avoid, and team collaboration metrics - all presented with thick outline strokes in a sketch-style visual format for software architects and development teams\" decoding=\"async\" src=\"https:\/\/www.visualize-ai.com\/wp-content\/uploads\/2026\/03\/oo-design-review-checklist-infographic-hand-drawn.jpg\"\/><\/figure>\n<\/div>\n<h2>1. Chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi ki\u1ec3m tra \ud83d\udccb<\/h2>\n<p>Tr\u01b0\u1edbc khi \u0111i s\u00e2u v\u00e0o c\u00e1c chi ti\u1ebft k\u1ef9 thu\u1eadt, h\u00e3y \u0111\u1ea3m b\u1ea3o m\u00f4i tr\u01b0\u1eddng ki\u1ec3m tra \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb s\u1eb5n s\u00e0ng \u0111\u1ec3 th\u00e0nh c\u00f4ng. M\u1ed9t cu\u1ed9c ki\u1ec3m tra h\u1ed7n lo\u1ea1n s\u1ebd d\u1eabn \u0111\u1ebfn vi\u1ec7c b\u1ecf s\u00f3t c\u00e1c chi ti\u1ebft quan tr\u1ecdng. Chu\u1ea9n b\u1ecb quy\u1ebft \u0111\u1ecbnh \u0111\u1ebfn hi\u1ec7u qu\u1ea3 c\u1ee7a bu\u1ed5i h\u1ecdp.<\/p>\n<ul>\n<li><strong>X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi:<\/strong>X\u00e1c \u0111\u1ecbnh r\u00f5 c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0o \u0111ang \u0111\u01b0\u1ee3c ki\u1ec3m tra. \u0110\u00e2y c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t cu\u1ed9c ki\u1ec3m tra ki\u1ebfn tr\u00fac c\u1ea5p cao hay m\u1ed9t ph\u00e2n t\u00edch s\u00e2u v\u00e0o tri\u1ec3n khai c\u1ee5 th\u1ec3 c\u1ee7a c\u00e1c l\u1edbp nh\u1ea5t \u0111\u1ecbnh?<\/li>\n<li><strong>Thu th\u1eadp t\u00e0i li\u1ec7u:<\/strong>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 s\u01a1 \u0111\u1ed3 UML, bi\u1ec3u \u0111\u1ed3 tu\u1ea7n t\u1ef1 v\u00e0 t\u00e0i li\u1ec7u y\u00eau c\u1ea7u \u0111\u1ec1u c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c b\u1edfi c\u00e1c ng\u01b0\u1eddi ki\u1ec3m tra.<\/li>\n<li><strong>\u0110\u1eb7t k\u1ef3 v\u1ecdng:<\/strong>X\u00e1c \u0111\u1ecbnh m\u1ee5c ti\u00eau c\u1ee7a cu\u1ed9c ki\u1ec3m tra. Ch\u00fang ta \u0111ang t\u00ecm ki\u1ebfm c\u00e1c \u0111i\u1ec3m ngh\u1ebdn hi\u1ec7u su\u1ea5t, c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt hay c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec?<\/li>\n<li><strong>Ph\u00e2n c\u00f4ng vai tr\u00f2:<\/strong>Ch\u1ec9 \u0111\u1ecbnh m\u1ed9t ng\u01b0\u1eddi \u0111i\u1ec1u ph\u1ed1i \u0111\u1ec3 gi\u1eef cho cu\u1ed9c th\u1ea3o lu\u1eadn t\u1eadp trung v\u00e0 m\u1ed9t ng\u01b0\u1eddi ghi ch\u00e9p \u0111\u1ec3 ghi l\u1ea1i c\u00e1c quy\u1ebft \u0111\u1ecbnh v\u00e0 c\u00e1c nhi\u1ec7m v\u1ee5 c\u1ea7n th\u1ef1c hi\u1ec7n.<\/li>\n<\/ul>\n<h2>2. Tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc SOLID \u2705<\/h2>\n<p>C\u00e1c nguy\u00ean t\u1eafc SOLID t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng cho thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng. Trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra, h\u00e3y \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf d\u1ef1a tr\u00ean n\u0103m nguy\u00ean t\u1eafc c\u1ed1t l\u00f5i n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i.<\/p>\n<h3>Nguy\u00ean t\u1eafc tr\u00e1ch nhi\u1ec7m \u0111\u01a1n nh\u1ea5t (SRP)<\/h3>\n<p>M\u1ed7i l\u1edbp n\u00ean c\u00f3 m\u1ed9t v\u00e0 ch\u1ec9 m\u1ed9t l\u00fd do \u0111\u1ec3 thay \u0111\u1ed5i. Ng\u01b0\u1eddi ki\u1ec3m tra c\u1ea7n t\u00ecm ki\u1ebfm c\u00e1c l\u1edbp d\u01b0\u1eddng nh\u01b0 l\u00e0m qu\u00e1 nhi\u1ec1u vi\u1ec7c.<\/p>\n<ul>\n<li>Ki\u1ec3m tra xem m\u1ed9t l\u1edbp c\u00f3 x\u1eed l\u00fd c\u1ea3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 logic kinh doanh hay kh\u00f4ng.<\/li>\n<li>Nh\u1eadn di\u1ec7n c\u00e1c l\u1edbp qu\u1ea3n l\u00fd nhi\u1ec1u v\u1ea5n \u0111\u1ec1 kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 ghi log v\u00e0 x\u00e1c th\u1ef1c.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o r\u1eb1ng n\u1ebfu y\u00eau c\u1ea7u thay \u0111\u1ed5i, ch\u1ec9 c\u00f3 m\u1ed9t l\u1edbp b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/li>\n<\/ul>\n<h3>Nguy\u00ean t\u1eafc M\u1edf\/\u0110\u00f3ng (OCP)<\/h3>\n<p>C\u00e1c th\u1ef1c th\u1ec3 ph\u1ea7n m\u1ec1m n\u00ean \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng nh\u01b0ng \u0111\u00f3ng \u0111\u1ed1i v\u1edbi thay \u0111\u1ed5i. \u0110i\u1ec1u n\u00e0y gi\u1ea3m thi\u1ec3u r\u1ee7i ro g\u00e2y l\u1ed7i khi th\u00eam t\u00ednh n\u0103ng m\u1edbi.<\/p>\n<ul>\n<li>T\u00ecm ki\u1ebfm vi\u1ec7c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i<code>if-else<\/code> ho\u1eb7c <code>switch<\/code>c\u00e1c c\u00e2u l\u1ec7nh ph\u1ee5 thu\u1ed9c v\u00e0o ki\u1ec3u \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li>\n<li>X\u00e1c minh r\u1eb1ng ch\u1ee9c n\u0103ng m\u1edbi \u0111\u01b0\u1ee3c th\u00eam v\u00e0o th\u00f4ng qua c\u00e1c l\u1edbp ho\u1eb7c giao di\u1ec7n m\u1edbi thay v\u00ec thay \u0111\u1ed5i m\u00e3 ngu\u1ed3n hi\u1ec7n c\u00f3.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c b\u1ed5 sung m\u1edbi kh\u00f4ng l\u00e0m h\u1ecfng h\u00e0nh vi hi\u1ec7n t\u1ea1i.<\/li>\n<\/ul>\n<h3>Nguy\u00ean t\u1eafc Thay th\u1ebf Liskov (LSP)<\/h3>\n<p>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a l\u1edbp cha n\u00ean c\u00f3 th\u1ec3 thay th\u1ebf b\u1eb1ng c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a l\u1edbp con m\u00e0 kh\u00f4ng l\u00e0m h\u1ecfng \u1ee9ng d\u1ee5ng.<\/p>\n<ul>\n<li>Ki\u1ec3m tra xem c\u00e1c l\u1edbp con c\u00f3 tu\u00e2n th\u1ee7 h\u1ee3p \u0111\u1ed3ng c\u1ee7a l\u1edbp cha hay kh\u00f4ng.<\/li>\n<li>T\u00ecm ki\u1ebfm c\u00e1c ph\u01b0\u01a1ng th\u1ee9c b\u1ecb ghi \u0111\u00e8 g\u00e2y ra c\u00e1c ngo\u1ea1i l\u1ec7 kh\u00f4ng mong \u0111\u1ee3i.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n ti\u1ec1n v\u00e0 h\u1eadu kh\u00f4ng b\u1ecb thay \u0111\u1ed5i b\u1ea5t th\u01b0\u1eddng trong c\u00e1c l\u1edbp d\u1eabn xu\u1ea5t.<\/li>\n<\/ul>\n<h3>Nguy\u00ean t\u1eafc t\u00e1ch bi\u1ec7t giao di\u1ec7n (ISP)<\/h3>\n<p>Kh\u00e1ch h\u00e0ng kh\u00f4ng n\u00ean b\u1ecb bu\u1ed9c ph\u1ea3i ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c giao di\u1ec7n m\u00e0 h\u1ecd kh\u00f4ng s\u1eed d\u1ee5ng. Tr\u00e1nh c\u00e1c giao di\u1ec7n l\u1edbn, \u0111\u01a1n nh\u1ea5t.<\/p>\n<ul>\n<li>Xem x\u00e9t xem c\u00e1c giao di\u1ec7n c\u00f3 ch\u1ee9a c\u00e1c ph\u01b0\u01a1ng th\u1ee9c kh\u00f4ng li\u00ean quan \u0111\u1ebfn m\u1ed9t s\u1ed1 ng\u01b0\u1eddi tri\u1ec3n khai hay kh\u00f4ng.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o r\u1eb1ng kh\u00e1ch h\u00e0ng ch\u1ec9 bi\u1ebft \u0111\u1ebfn c\u00e1c ph\u01b0\u01a1ng th\u1ee9c m\u00e0 h\u1ecd th\u1ef1c s\u1ef1 g\u1ecdi.<\/li>\n<li>Chia nh\u1ecf c\u00e1c giao di\u1ec7n l\u1edbn th\u00e0nh c\u00e1c giao di\u1ec7n nh\u1ecf h\u01a1n, chuy\u00ean bi\u1ec7t theo vai tr\u00f2.<\/li>\n<\/ul>\n<h3>Nguy\u00ean t\u1eafc \u0111\u1ea3o ng\u01b0\u1ee3c ph\u1ee5 thu\u1ed9c (DIP)<\/h3>\n<p>C\u00e1c module c\u1ea5p cao kh\u00f4ng n\u00ean ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c module c\u1ea5p th\u1ea5p. C\u1ea3 hai \u0111\u1ec1u n\u00ean ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c tr\u1eebu t\u01b0\u1ee3ng.<\/p>\n<ul>\n<li>Ki\u1ec3m tra s\u1ef1 g\u1eafn k\u1ebft ch\u1eb7t ch\u1ebd gi\u1eefa logic kinh doanh c\u1ea5p cao v\u00e0 m\u00e3 c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u1ea5p th\u1ea5p.<\/li>\n<li>X\u00e1c minh r\u1eb1ng c\u00e1c ph\u1ee5 thu\u1ed9c \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o thay v\u00ec \u0111\u01b0\u1ee3c kh\u1edfi t\u1ea1o tr\u1ef1c ti\u1ebfp b\u00ean trong l\u1edbp.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o thi\u1ebft k\u1ebf d\u1ef1a v\u00e0o giao di\u1ec7n ho\u1eb7c l\u1edbp tr\u1eebu t\u01b0\u1ee3ng \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c ph\u1ee5 thu\u1ed9c.<\/li>\n<\/ul>\n<h2>3. G\u1eafn k\u1ebft v\u00e0 g\u1eafn k\u1ebft n\u1ed9i t\u1ea1i \ud83d\udd17<\/h2>\n<p>Hai ch\u1ec9 s\u1ed1 quan tr\u1ecdng cho s\u1ee9c kh\u1ecfe thi\u1ebft k\u1ebf l\u00e0 g\u1eafn k\u1ebft v\u00e0 g\u1eafn k\u1ebft n\u1ed9i t\u1ea1i. G\u1eafn k\u1ebft n\u1ed9i t\u1ea1i cao v\u00e0 g\u1eafn k\u1ebft th\u1ea5p d\u1eabn \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng modular, linh ho\u1ea1t.<\/p>\n<h3>\u0110\u00e1nh gi\u00e1 g\u1eafn k\u1ebft<\/h3>\n<p>G\u1eafn k\u1ebft \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 ph\u1ee5 thu\u1ed9c l\u1eabn nhau gi\u1eefa c\u00e1c module ph\u1ea7n m\u1ec1m. B\u1ea1n mu\u1ed1n g\u1eafn k\u1ebft l\u1ecfng l\u1ebbo.<\/p>\n<ul>\n<li><strong>Kh\u1edfi t\u1ea1o tr\u1ef1c ti\u1ebfp:<\/strong>Tr\u00e1nh t\u1ea1o c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a ph\u1ee5 thu\u1ed9c tr\u1ef1c ti\u1ebfp b\u00ean trong m\u1ed9t l\u1edbp.<\/li>\n<li><strong>Ph\u1ee5 thu\u1ed9c d\u1eef li\u1ec7u:<\/strong>Ki\u1ec3m tra xem c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 \u0111ang truy\u1ec1n c\u00e1c c\u1ea5u tr\u00fac d\u1eef li\u1ec7u l\u1edbn ch\u1ee9a th\u00f4ng tin ch\u1ec9 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng th\u1ee9c c\u1ea7n hay kh\u00f4ng.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i to\u00e0n c\u1ee5c:<\/strong>T\u1ed1i thi\u1ec3u h\u00f3a s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c bi\u1ebfn to\u00e0n c\u1ee5c ho\u1eb7c singleton t\u1ea1o ra c\u00e1c ph\u1ee5 thu\u1ed9c \u1ea9n.<\/li>\n<\/ul>\n<h3>\u0110\u00e1nh gi\u00e1 g\u1eafn k\u1ebft n\u1ed9i t\u1ea1i<\/h3>\n<p>G\u1eafn k\u1ebft n\u1ed9i t\u1ea1i \u0111o l\u01b0\u1eddng m\u1ee9c \u0111\u1ed9 li\u00ean quan gi\u1eefa c\u00e1c tr\u00e1ch nhi\u1ec7m c\u1ee7a m\u1ed9t l\u1edbp. B\u1ea1n mu\u1ed1n g\u1eafn k\u1ebft n\u1ed9i t\u1ea1i cao.<\/p>\n<ul>\n<li><strong>G\u1eafn k\u1ebft logic:<\/strong>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c ph\u01b0\u01a1ng th\u1ee9c trong m\u1ed9t l\u1edbp \u0111\u1ec1u \u0111\u00f3ng g\u00f3p v\u00e0o m\u1ed9t m\u1ee5c \u0111\u00edch duy nh\u1ea5t, r\u00f5 r\u00e0ng.<\/li>\n<li><strong>G\u1eafn k\u1ebft th\u1eddi gian:<\/strong>C\u1ea9n tr\u1ecdng v\u1edbi c\u00e1c l\u1edbp nh\u00f3m c\u00e1c thao t\u00e1c ch\u1ec9 v\u00ec ch\u00fang x\u1ea3y ra c\u00f9ng m\u1ed9t l\u00fac.<\/li>\n<li><strong>Li\u00ean k\u1ebft ch\u1ee9c n\u0103ng:<\/strong>H\u01b0\u1edbng t\u1edbi m\u1ee9c \u0111\u1ed9 n\u00e0y, n\u01a1i m\u1ecdi ph\u1ea7n c\u1ee7a l\u1edbp \u0111\u1ec1u c\u1ea7n thi\u1ebft cho ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a l\u1edbp.<\/li>\n<\/ul>\n<h2>4. Tr\u00e1ch nhi\u1ec7m l\u1edbp v\u00e0 Nguy\u00ean t\u1eafc tr\u00e1ch nhi\u1ec7m \u0111\u01a1n nh\u1ea5t \ud83c\udfaf<\/h2>\n<p>Vi\u1ec7c giao tr\u00e1ch nhi\u1ec7m r\u00f5 r\u00e0ng l\u00e0 r\u1ea5t quan tr\u1ecdng. N\u1ebfu m\u1ed9t l\u1edbp kh\u00f4ng bi\u1ebft nhi\u1ec7m v\u1ee5 c\u1ee7a m\u00ecnh, n\u00f3 s\u1ebd th\u1ea5t b\u1ea1i khi y\u00eau c\u1ea7u thay \u0111\u1ed5i.<\/p>\n<ul>\n<li><strong>Giao di\u1ec7n c\u00f4ng khai:<\/strong>Giao di\u1ec7n c\u00f4ng khai c\u00f3 t\u1ed1i thi\u1ec3u kh\u00f4ng? N\u00f3 c\u00f3 ti\u1ebft l\u1ed9 qu\u00e1 nhi\u1ec1u tr\u1ea1ng th\u00e1i n\u1ed9i b\u1ed9 kh\u00f4ng?<\/li>\n<li><strong>\u0110\u1ed9 chi ti\u1ebft ph\u01b0\u01a1ng th\u1ee9c:<\/strong>C\u00e1c ph\u01b0\u01a1ng th\u1ee9c c\u00f3 qu\u00e1 l\u1edbn kh\u00f4ng? M\u1ed9t ph\u01b0\u01a1ng th\u1ee9c l\u00e0m qu\u00e1 nhi\u1ec1u th\u01b0\u1eddng cho th\u1ea5y l\u1edbp \u0111ang l\u00e0m qu\u00e1 nhi\u1ec1u.<\/li>\n<li><strong>Qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i:<\/strong>L\u1edbp c\u00f3 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i c\u1ee7a ch\u00ednh n\u00f3 m\u1ed9t c\u00e1ch \u0111\u00fang \u0111\u1eafn, hay n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng b\u00ean ngo\u00e0i \u0111\u1ec3 theo d\u00f5i tr\u1ea1ng th\u00e1i c\u1ee7a m\u00ecnh?<\/li>\n<\/ul>\n<h2>5. T\u01b0\u01a1ng t\u00e1c v\u00e0 lu\u1ed3ng tin nh\u1eafn \ud83d\udd04<\/h2>\n<p>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng giao ti\u1ebfp th\u00f4ng qua tin nh\u1eafn. Hi\u1ec3u r\u00f5 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 \u0111i\u1ec1u khi\u1ec3n l\u00e0 thi\u1ebft y\u1ebfu cho hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n<ul>\n<li><strong>S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1:<\/strong>Xem x\u00e9t l\u1ea1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o lu\u1ed3ng ho\u1ea1t \u0111\u1ed9ng h\u1ee3p l\u00fd v\u1ec1 m\u1eb7t logic.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng ph\u1ee5 thu\u1ed9c v\u00f2ng:<\/strong>\u0110\u1ea3m b\u1ea3o l\u1edbp A kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o l\u1edbp B, m\u00e0 l\u1edbp B l\u1ea1i ph\u1ee5 thu\u1ed9c ng\u01b0\u1ee3c tr\u1edf l\u1ea1i v\u00e0o l\u1edbp A.<\/li>\n<li><strong>V\u00f2ng ph\u1ea3n h\u1ed3i:<\/strong>Ki\u1ec3m tra c\u00e1c v\u00f2ng l\u1eb7p v\u00f4 h\u1ea1n ho\u1eb7c l\u1eddi g\u1ecdi \u0111\u1ec7 quy kh\u00f4ng c\u00f3 \u0111i\u1ec1u ki\u1ec7n k\u1ebft th\u00fac ph\u00f9 h\u1ee3p.<\/li>\n<li><strong>H\u1ee3p \u0111\u1ed3ng giao di\u1ec7n:<\/strong>X\u00e1c minh r\u1eb1ng ng\u01b0\u1eddi g\u1eedi tin nh\u1eafn hi\u1ec3u \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng c\u1ee7a ng\u01b0\u1eddi nh\u1eadn.<\/li>\n<\/ul>\n<h2>6. K\u1ebf th\u1eeba v\u00e0 \u0111a h\u00ecnh \ud83e\uddec<\/h2>\n<p>K\u1ebf th\u1eeba l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd nh\u01b0ng c\u1ea7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch th\u1eadn tr\u1ecdng. C\u00e1c c\u1ea5u tr\u00fac k\u1ebf th\u1eeba kh\u00f4ng ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 khi\u1ebfn vi\u1ec7c t\u00e1i c\u1ea5u tr\u00fac tr\u1edf n\u00ean kh\u00f3 kh\u0103n.<\/p>\n<ul>\n<li><strong>\u0110\u1ed9 s\u00e2u c\u1ee7a c\u1ea5u tr\u00fac k\u1ebf th\u1eeba:<\/strong>Tr\u00e1nh c\u00e1c c\u00e2y k\u1ebf th\u1eeba s\u00e2u. Ba c\u1ea5p th\u01b0\u1eddng l\u00e0 m\u1ee9c t\u1ed1i \u0111a \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb.<\/li>\n<li><strong>L\u00e0-m\u1ed9t so v\u1edbi C\u00f3-m\u1ed9t:<\/strong>\u0110\u1ea3m b\u1ea3o k\u1ebf th\u1eeba \u0111\u1ea1i di\u1ec7n cho m\u1ed1i quan h\u1ec7 <code>l\u00e0-m\u1ed9t<\/code> m\u1ed1i quan h\u1ec7. S\u1eed d\u1ee5ng k\u1ebft h\u1ee3p cho <code>c\u00f3-m\u1ed9t<\/code>m\u1ed1i quan h\u1ec7.<\/li>\n<li><strong>H\u00e0nh vi \u0111a h\u00ecnh:<\/strong> \u0110\u1ea3m b\u1ea3o r\u1eb1ng \u0111a h\u00ecnh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c h\u00e0nh vi kh\u00e1c nhau, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u1ec3 t\u1ed5 ch\u1ee9c m\u00e3 ngu\u1ed3n.<\/li>\n<li><strong>L\u1edbp c\u01a1 s\u1edf d\u1ec5 t\u1ed5n th\u01b0\u01a1ng:<\/strong> Ki\u1ec3m tra xem vi\u1ec7c thay \u0111\u1ed5i l\u1edbp c\u01a1 s\u1edf c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng nhi\u1ec1u l\u1edbp con m\u1ed9t c\u00e1ch b\u1ea5t ng\u1edd hay kh\u00f4ng.<\/li>\n<\/ul>\n<h2>7. Bao \u0111\u00f3ng v\u00e0 m\u1ee9c \u0111\u1ed9 hi\u1ec3n th\u1ecb \ud83d\udd12<\/h2>\n<p>Bao \u0111\u00f3ng \u1ea9n \u0111i chi ti\u1ebft tri\u1ec3n khai b\u00ean trong. \u0110i\u1ec1u n\u00e0y b\u1ea3o v\u1ec7 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n<ul>\n<li><strong>Bi\u1ebfn \u0111\u1ed5i truy c\u1eadp:<\/strong> C\u00e1c tr\u01b0\u1eddng c\u00f3 \u0111\u01b0\u1ee3c khai b\u00e1o ri\u00eang t\u01b0 kh\u00f4ng? C\u00e1c ph\u01b0\u01a1ng th\u1ee9c l\u1ea5y v\u00e0 thi\u1ebft l\u1eadp c\u00f3 c\u1ea7n thi\u1ebft, hay d\u1eef li\u1ec7u n\u00ean b\u1ea5t bi\u1ebfn?<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i n\u1ed9i b\u1ed9:<\/strong> M\u00e3 b\u00ean ngo\u00e0i c\u00f3 th\u1ec3 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i n\u1ed9i b\u1ed9 c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng m\u00e0 kh\u00f4ng \u0111i qua c\u00e1c ph\u01b0\u01a1ng th\u1ee9c l\u1edbp kh\u00f4ng?<\/li>\n<li><strong>Ph\u01b0\u01a1ng th\u1ee9c c\u00f4ng khai:<\/strong> C\u00e1c ph\u01b0\u01a1ng th\u1ee9c c\u00f4ng khai c\u00f3 ti\u1ebft l\u1ed9 chi ti\u1ebft tri\u1ec3n khai b\u00ean trong m\u00e0 n\u00ean \u0111\u01b0\u1ee3c gi\u1eef k\u00edn kh\u00f4ng?<\/li>\n<\/ul>\n<h2>8. X\u1eed l\u00fd l\u1ed7i v\u00e0 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i \u26a0\ufe0f<\/h2>\n<p>C\u00e1c h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc x\u1eed l\u00fd s\u1ef1 c\u1ed1 m\u1ed9t c\u00e1ch tr\u01a1n tru. Vi\u1ec7c xem x\u00e9t thi\u1ebft k\u1ebf ph\u1ea3i ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng c\u00e1ch qu\u1ea3n l\u00fd l\u1ed7i.<\/p>\n<ul>\n<li><strong>Ph\u00e2n ph\u1ed1i ngo\u1ea1i l\u1ec7:<\/strong> C\u00e1c ngo\u1ea1i l\u1ec7 c\u00f3 \u0111\u01b0\u1ee3c b\u1eaft v\u00e0 x\u1eed l\u00fd, hay ch\u00fang b\u1ecb nu\u1ed1t tr\u00f4i m\u1ed9t c\u00e1ch im l\u1eb7ng?<\/li>\n<li><strong>T\u00ednh nh\u1ea5t qu\u00e1n tr\u1ea1ng th\u00e1i:<\/strong> N\u1ebfu m\u1ed9t thao t\u00e1c th\u1ea5t b\u1ea1i gi\u1eefa ch\u1eebng, \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 v\u1eabn \u1edf tr\u1ea1ng th\u00e1i h\u1ee3p l\u1ec7 kh\u00f4ng?<\/li>\n<li><strong>Chi\u1ebfn l\u01b0\u1ee3c ph\u1ee5c h\u1ed3i:<\/strong> C\u00f3 c\u01a1 ch\u1ebf n\u00e0o \u0111\u1ec3 ph\u1ee5c h\u1ed3i t\u1eeb c\u00e1c l\u1ed7i t\u1ea1m th\u1eddi kh\u00f4ng?<\/li>\n<li><strong>Ghi nh\u1eadt k\u00fd:<\/strong> C\u00f3 ghi nh\u1eadt k\u00fd \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 g\u1ee1 l\u1ed7i m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m kh\u00f4ng?<\/li>\n<\/ul>\n<h2>9. C\u00e1c y\u1ebfu t\u1ed1 li\u00ean quan \u0111\u1ebfn kh\u1ea3 n\u0103ng ki\u1ec3m th\u1eed \ud83e\uddea<\/h2>\n<p>N\u1ebfu m\u1ed9t thi\u1ebft k\u1ebf kh\u00f3 ki\u1ec3m th\u1eed, th\u00ec kh\u1ea3 n\u0103ng cao l\u00e0 kh\u00f3 b\u1ea3o tr\u00ec. Kh\u1ea3 n\u0103ng ki\u1ec3m th\u1eed n\u00ean l\u00e0 ti\u00eau ch\u00ed h\u00e0ng \u0111\u1ea7u.<\/p>\n<ul>\n<li><strong>Gi\u1ea3 l\u1eadp:<\/strong> C\u00f3 th\u1ec3 gi\u1ea3 l\u1eadp d\u1ec5 d\u00e0ng c\u00e1c ph\u1ee5 thu\u1ed9c \u0111\u1ec3 ki\u1ec3m th\u1eed \u0111\u01a1n v\u1ecb kh\u00f4ng?<\/li>\n<li><strong>T\u00e1ch bi\u1ec7t:<\/strong> C\u00f3 th\u1ec3 ki\u1ec3m th\u1eed m\u1ed9t l\u1edbp m\u1ed9t c\u00e1ch t\u00e1ch bi\u1ec7t kh\u1ecfi c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c m\u1ea1ng kh\u00f4ng?<\/li>\n<li><strong>H\u1ec7 qu\u1ea3 ph\u1ee5:<\/strong> C\u00e1c ph\u01b0\u01a1ng th\u1ee9c c\u00f3 t\u1ea1o ra h\u1ec7 qu\u1ea3 ph\u1ee5 khi\u1ebfn vi\u1ec7c ki\u1ec3m th\u1eed tr\u1edf n\u00ean kh\u00f3 kh\u0103n kh\u00f4ng?<\/li>\n<li><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p thi\u1ebft l\u1eadp:<\/strong>Vi\u1ec7c t\u1ea1o m\u1ed9t th\u1ec3 hi\u1ec7n c\u1ee7a l\u1edbp c\u00f3 y\u00eau c\u1ea7u m\u00e3 thi\u1ebft l\u1eadp ph\u1ee9c t\u1ea1p kh\u00f4ng?<\/li>\n<\/ul>\n<h2>10. \u0110\u1ed9 r\u00f5 r\u00e0ng c\u1ee7a t\u00e0i li\u1ec7u \ud83d\udcdd<\/h2>\n<p>T\u00e0i li\u1ec7u n\u1ed1i li\u1ec1n kho\u1ea3ng c\u00e1ch gi\u1eefa thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai. N\u00f3 ph\u1ea3i r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch.<\/p>\n<ul>\n<li><strong>Javadoc\/B\u00ecnh lu\u1eadn:<\/strong>C\u00e1c ph\u01b0\u01a1ng th\u1ee9c c\u00f4ng khai c\u00f3 \u0111\u01b0\u1ee3c t\u00e0i li\u1ec7u h\u00f3a b\u1eb1ng nh\u1eefng gi\u1ea3i th\u00edch r\u00f5 r\u00e0ng v\u1ec1 m\u1ee5c \u0111\u00edch, tham s\u1ed1 v\u00e0 gi\u00e1 tr\u1ecb tr\u1ea3 v\u1ec1 kh\u00f4ng?<\/li>\n<li><strong>L\u00fd do thi\u1ebft k\u1ebf:<\/strong>C\u00f3 t\u00e0i li\u1ec7u gi\u1ea3i th\u00edch<em>t\u1ea1i sao<\/em>m\u1ed9t s\u1ed1 quy\u1ebft \u0111\u1ecbnh thi\u1ebft k\u1ebf \u0111\u01b0\u1ee3c \u0111\u01b0a ra kh\u00f4ng?<\/li>\n<li><strong>T\u00ednh nh\u1ea5t qu\u00e1n:<\/strong>C\u00e1c thu\u1eadt ng\u1eef c\u00f3 nh\u1ea5t qu\u00e1n gi\u1eefa c\u00e1c s\u01a1 \u0111\u1ed3 v\u00e0 b\u00ecnh lu\u1eadn m\u00e3 ngu\u1ed3n kh\u00f4ng?<\/li>\n<li><strong>S\u01a1 \u0111\u1ed3:<\/strong>C\u00e1c s\u01a1 \u0111\u1ed3 c\u00f3 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt theo thi\u1ebft k\u1ebf th\u1ef1c t\u1ebf kh\u00f4ng?<\/li>\n<\/ul>\n<h2>B\u1ea3ng ki\u1ec3m tra ch\u00ednh \ud83d\udcca<\/h2>\n<p>S\u1eed d\u1ee5ng b\u1ea3ng n\u00e0y nh\u01b0 m\u1ed9t tham chi\u1ebfu nhanh trong bu\u1ed5i xem x\u00e9t. \u0110\u00e1nh d\u1ea5u c\u00e1c m\u1ee5c l\u00e0<strong>\u0110\u1ea1t<\/strong>, <strong>Kh\u00f4ng \u0111\u1ea1t<\/strong>, ho\u1eb7c<strong>C\u1ea7n s\u1eeda \u0111\u1ed5i<\/strong>.<\/p>\n<table>\n<thead>\n<tr>\n<th>Th\u1ec3 lo\u1ea1i<\/th>\n<th>M\u1ee5c ki\u1ec3m tra<\/th>\n<th>\u0110\u1ea1t\/Kh\u00f4ng \u0111\u1ea1t<\/th>\n<th>Ghi ch\u00fa<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SRP<\/td>\n<td>M\u1ed7i l\u1edbp c\u00f3 ch\u1ec9 m\u1ed9t l\u00fd do \u0111\u1ec3 thay \u0111\u1ed5i kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>OCP<\/td>\n<td>M\u00e3 ngu\u1ed3n c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n s\u1eeda \u0111\u1ed5i kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh li\u00ean k\u1ebft<\/td>\n<td>C\u00e1c ph\u1ee5 thu\u1ed9c c\u00f3 \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u v\u00e0 ti\u00eam v\u00e0o kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh g\u1eafn k\u1ebft<\/td>\n<td>C\u00e1c tr\u00e1ch nhi\u1ec7m c\u1ee7a l\u1edbp c\u00f3 li\u00ean quan ch\u1eb7t ch\u1ebd v\u1edbi nhau kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh \u0111\u00f3ng g\u00f3i<\/td>\n<td>Tr\u1ea1ng th\u00e1i n\u1ed9i b\u1ed9 c\u00f3 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u1ecfi s\u1ef1 thay \u0111\u1ed5i t\u1eeb b\u00ean ngo\u00e0i kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng ki\u1ec3m th\u1eed<\/td>\n<td>L\u1edbp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m th\u1eed \u0111\u01a1n v\u1ecb m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Giao di\u1ec7n<\/td>\n<td>C\u00e1c giao di\u1ec7n c\u00f3 t\u1ed1i thi\u1ec3u v\u00e0 c\u1ee5 th\u1ec3 cho kh\u00e1ch h\u00e0ng kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>T\u00e0i li\u1ec7u<\/td>\n<td>C\u00e1c s\u01a1 \u0111\u1ed3 v\u00e0 ch\u00fa th\u00edch c\u00f3 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt m\u1edbi nh\u1ea5t kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>X\u1eed l\u00fd l\u1ed7i<\/td>\n<td>C\u00e1c t\u00ecnh hu\u1ed1ng th\u1ea5t b\u1ea1i c\u00f3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd m\u1ed9t c\u00e1ch tr\u01a1n tru kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>K\u1ebf th\u1eeba<\/td>\n<td>K\u1ebf th\u1eeba c\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ec9 \u0111\u1ec3 cho <code>l\u00e0-m\u1ed9t<\/code> quan h\u1ec7 kh\u00f4ng?<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh \ud83d\udeab<\/h2>\n<p>Ngay c\u1ea3 khi c\u00f3 danh s\u00e1ch ki\u1ec3m tra, m\u1ed9t s\u1ed1 m\u1eabu th\u01b0\u1eddng xuy\u00ean b\u1ecb b\u1ecf s\u00f3t. H\u00e3y c\u1ea3nh gi\u00e1c v\u1edbi nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn n\u00e0y.<\/p>\n<ul>\n<li><strong>\u0110\u1ed1i t\u01b0\u1ee3ng Th\u1ea7n (God Objects):<\/strong> C\u00e1c l\u1edbp bi\u1ebft m\u1ecdi th\u1ee9 v\u00e0 l\u00e0m m\u1ecdi th\u1ee9. Nh\u1eefng l\u1edbp n\u00e0y tr\u1edf th\u00e0nh \u0111i\u1ec3m ngh\u1ebdn cho s\u1ef1 thay \u0111\u1ed5i.<\/li>\n<li><strong>Nh\u00f3m d\u1eef li\u1ec7u (Data Clumps):<\/strong> C\u00e1c nh\u00f3m d\u1eef li\u1ec7u lu\u00f4n xu\u1ea5t hi\u1ec7n c\u00f9ng nhau nh\u01b0ng b\u1ecb r\u1ea3i r\u00e1c tr\u00ean nhi\u1ec1u \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c nhau. H\u00e3y c\u00e2n nh\u1eafc gom ch\u00fang l\u1ea1i th\u00e0nh m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng gi\u00e1 tr\u1ecb.<\/li>\n<li><strong>Ghen t\u1ecb t\u00ednh n\u0103ng (Feature Envy):<\/strong> M\u1ed9t ph\u01b0\u01a1ng th\u1ee9c s\u1eed d\u1ee5ng nhi\u1ec1u ph\u01b0\u01a1ng th\u1ee9c t\u1eeb m\u1ed9t l\u1edbp kh\u00e1c h\u01a1n l\u00e0 t\u1eeb ch\u00ednh n\u00f3. Di chuy\u1ec3n ph\u01b0\u01a1ng th\u1ee9c \u0111\u00f3 sang l\u1edbp m\u00e0 n\u00f3 s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t.<\/li>\n<li><strong>S\u1ef1 \u00e1m \u1ea3nh v\u1edbi ki\u1ec3u nguy\u00ean th\u1ee7y (Primitive Obsession):<\/strong> S\u1eed d\u1ee5ng c\u00e1c ki\u1ec3u nguy\u00ean th\u1ee7y (nh\u01b0 chu\u1ed7i ho\u1eb7c s\u1ed1 nguy\u00ean) cho c\u00e1c kh\u00e1i ni\u1ec7m ph\u1ee9c t\u1ea1p. Thay v\u00e0o \u0111\u00f3, h\u00e3y t\u1ea1o c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng gi\u00e1 tr\u1ecb.<\/li>\n<li><strong>C\u00e2u l\u1ec7nh Switch:<\/strong>S\u1eed d\u1ee5ng <code>switch<\/code>c\u00e1c c\u00e2u l\u1ec7nh \u0111\u1ec3 x\u1eed l\u00fd ki\u1ec3u d\u1eef li\u1ec7u. S\u1eed d\u1ee5ng t\u00ednh \u0111a h\u00ecnh \u0111\u1ec3 thay th\u1ebf ch\u00fang.<\/li>\n<\/ul>\n<h2>Y\u1ebfu t\u1ed1 con ng\u01b0\u1eddi trong c\u00e1c bu\u1ed5i \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf \ud83d\udc65<\/h2>\n<p>T\u00ednh ch\u00ednh x\u00e1c v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt ch\u1ec9 l\u00e0 m\u1ed9t n\u1eeda cu\u1ed9c chi\u1ebfn. C\u00e1c y\u1ebfu t\u1ed1 x\u00e3 h\u1ed9i trong bu\u1ed5i \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u00e0nh c\u00f4ng c\u1ee7a n\u00f3.<\/p>\n<ul>\n<li><strong>An to\u00e0n t\u00e2m l\u00fd:<\/strong>\u0110\u1ea3m b\u1ea3o ng\u01b0\u1eddi \u0111\u00e1nh gi\u00e1 c\u1ea3m th\u1ea5y an to\u00e0n khi ph\u00ea b\u00ecnh thi\u1ebft k\u1ebf m\u00e0 kh\u00f4ng c\u1ea7n t\u1ea5n c\u00f4ng ng\u01b0\u1eddi thi\u1ebft k\u1ebf.<\/li>\n<li><strong>Ph\u1ea3n h\u1ed3i mang t\u00ednh x\u00e2y d\u1ef1ng:<\/strong>T\u1eadp trung v\u00e0o m\u00e3 ngu\u1ed3n v\u00e0 thi\u1ebft k\u1ebf, ch\u1ee9 kh\u00f4ng ph\u1ea3i con ng\u01b0\u1eddi. S\u1eed d\u1ee5ng ng\u00f4n ng\u1eef \u201cch\u00fang ta\u201d khi c\u00f3 th\u1ec3.<\/li>\n<li><strong>Qu\u1ea3n l\u00fd th\u1eddi gian:<\/strong>Gi\u1eef cu\u1ed9c h\u1ecdp \u0111\u00fang ti\u1ebfn \u0111\u1ed9. N\u1ebfu m\u1ed9t cu\u1ed9c th\u1ea3o lu\u1eadn l\u1ec7ch ch\u1ee7 \u0111\u1ec1, h\u00e3y t\u1ea1m g\u00e1c l\u1ea1i \u0111\u1ec3 x\u1eed l\u00fd sau.<\/li>\n<li><strong>Theo d\u00f5i sau:<\/strong>Giao nhi\u1ec7m v\u1ee5 c\u1ee5 th\u1ec3 v\u1edbi ng\u01b0\u1eddi ph\u1ee5 tr\u00e1ch v\u00e0 th\u1eddi h\u1ea1n. M\u1ed9t bu\u1ed5i \u0111\u00e1nh gi\u00e1 m\u00e0 kh\u00f4ng c\u00f3 theo d\u00f5i l\u00e0 ph\u00ed ph\u1ea1m th\u1eddi gian.<\/li>\n<\/ul>\n<h2>C\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ec3 c\u1ea3i ti\u1ebfn li\u00ean t\u1ee5c \ud83d\udcc8<\/h2>\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o quy tr\u00ecnh \u0111\u00e1nh gi\u00e1 th\u1ef1c s\u1ef1 hi\u1ec7u qu\u1ea3, h\u00e3y theo d\u00f5i c\u00e1c ch\u1ec9 s\u1ed1 theo th\u1eddi gian.<\/p>\n<ul>\n<li><strong>M\u1eadt \u0111\u1ed9 l\u1ed7i:<\/strong>C\u00f3 bao nhi\u00eau l\u1ed7i \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t m\u00e0 c\u00f3 th\u1ec3 \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n trong bu\u1ed5i \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf?<\/li>\n<li><strong>Th\u1eddi gian chu k\u1ef3 \u0111\u00e1nh gi\u00e1:<\/strong>M\u1ea5t bao l\u00e2u \u0111\u1ec3 ho\u00e0n th\u00e0nh m\u1ed9t bu\u1ed5i \u0111\u00e1nh gi\u00e1 t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i?<\/li>\n<li><strong>T\u1ef7 l\u1ec7 ph\u1ea3i s\u1eeda l\u1ea1i:<\/strong>Thi\u1ebft k\u1ebf c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t l\u1ea1i bao nhi\u00eau l\u1ea7n sau khi tri\u1ec3n khai b\u1eaft \u0111\u1ea7u?<\/li>\n<li><strong>M\u1ee9c \u0111\u1ed9 h\u00e0i l\u00f2ng c\u1ee7a \u0111\u1ed9i nh\u00f3m:<\/strong>C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 c\u1ea3m th\u1ea5y c\u00e1c bu\u1ed5i \u0111\u00e1nh gi\u00e1 mang l\u1ea1i gi\u00e1 tr\u1ecb cho c\u00f4ng vi\u1ec7c c\u1ee7a h\u1ecd kh\u00f4ng?<\/li>\n<\/ul>\n<h2>Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \ud83d\udca1<\/h2>\n<p>Th\u1ef1c hi\u1ec7n quy tr\u00ecnh \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng nghi\u00eam ng\u1eb7t \u0111\u00f2i h\u1ecfi s\u1ef1 cam k\u1ebft. \u0110i\u1ec1u n\u00e0y kh\u00f4ng nh\u1eb1m t\u00ecm l\u1ed7i, m\u00e0 l\u00e0 x\u00e2y d\u1ef1ng s\u1ef1 t\u1ef1 tin v\u00e0o h\u1ec7 th\u1ed1ng. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng h\u1ec7 th\u1ed1ng ki\u1ec3m tra tr\u00ean m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng, c\u00e1c \u0111\u1ed9i nh\u00f3m c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m c\u1ee7a h\u1ecd v\u1eabn v\u1eefng ch\u1eafc khi y\u00eau c\u1ea7u thay \u0111\u1ed5i.<\/p>\n<p>H\u00e3y nh\u1edb r\u1eb1ng thi\u1ebft k\u1ebf l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh l\u1eb7p l\u1ea1i. M\u1ed9t thi\u1ebft k\u1ebf ho\u00e0n h\u1ea3o kh\u00f4ng t\u1ed3n t\u1ea1i ngay t\u1eeb \u0111\u1ea7u. M\u1ee5c ti\u00eau l\u00e0 \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh c\u00f3 c\u0103n c\u1ee9 nh\u1eb1m gi\u1ea3m thi\u1ec3u r\u1ee7i ro v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec. C\u00e1c bu\u1ed5i \u0111\u00e1nh gi\u00e1 \u0111\u1ecbnh k\u1ef3 t\u1ea1o n\u00ean v\u0103n h\u00f3a ch\u1ea5t l\u01b0\u1ee3ng, n\u01a1i n\u1ee3 k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd ch\u1ee7 \u0111\u1ed9ng thay v\u00ec ph\u1ea3n \u1ee9ng. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y d\u1eabn \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua th\u1eed th\u00e1ch c\u1ee7a th\u1eddi gian v\u00e0 s\u1ef1 thay \u0111\u1ed5i.<\/p>\n<p>B\u1eaft \u0111\u1ea7u v\u1edbi nh\u1eefng nguy\u00ean t\u1eafc n\u00e0y ngay h\u00f4m nay. \u00c1p d\u1ee5ng danh s\u00e1ch ki\u1ec3m tra v\u00e0o d\u1ef1 \u00e1n ti\u1ebfp theo c\u1ee7a b\u1ea1n. Quan s\u00e1t s\u1ef1 c\u1ea3i thi\u1ec7n v\u1ec1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh m\u00e3 ngu\u1ed3n v\u00e0 t\u1ed1c \u0111\u1ed9 l\u00e0m vi\u1ec7c c\u1ee7a \u0111\u1ed9i nh\u00f3m. Con \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ebfn ph\u1ea7n m\u1ec1m m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c l\u00e1t b\u1eb1ng nh\u1eefng bu\u1ed5i \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf c\u1ea9n tr\u1ecdng v\u00e0 c\u00f3 ch\u1ee7 \u00fd.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng m\u1ea1nh m\u1ebd n\u00e0o. Khi c\u00e1c \u0111\u1ed9i ng\u0169 \u0111\u1ea7u t\u01b0 th\u1eddi gian v\u00e0o Ph\u00e2n t\u00edch v\u00e0 Thi\u1ebft k\u1ebf H\u01b0\u1edbng&hellip;<\/p>\n","protected":false},"author":1,"featured_media":720,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"M\u1ed9t danh s\u00e1ch ki\u1ec3m tra th\u1ef1c t\u1ebf cho c\u00e1c bu\u1ed5i \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng th\u00e0nh c\u00f4ng \ud83d\udee0\ufe0f","_yoast_wpseo_metadesc":"\u0110\u1ea3m b\u1ea3o m\u00e3 ngu\u1ed3n ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi danh s\u00e1ch ki\u1ec3m tra OOAD n\u00e0y. \u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u00e1c nguy\u00ean t\u1eafc SOLID, \u0111\u1ed9 li\u00ean k\u1ebft v\u00e0 c\u00e1c m\u1eabu thi\u1ebft k\u1ebf. C\u1ea3i thi\u1ec7n ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m ngay h\u00f4m nay.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[44],"tags":[40,43],"class_list":["post-719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-object-oriented-analysis-and-design","tag-academic","tag-object-oriented-analysis-and-design"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>M\u1ed9t danh s\u00e1ch ki\u1ec3m tra th\u1ef1c t\u1ebf cho c\u00e1c bu\u1ed5i \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng th\u00e0nh c\u00f4ng \ud83d\udee0\ufe0f<\/title>\n<meta name=\"description\" content=\"\u0110\u1ea3m b\u1ea3o m\u00e3 ngu\u1ed3n ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi danh s\u00e1ch ki\u1ec3m tra OOAD n\u00e0y. \u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u00e1c nguy\u00ean t\u1eafc SOLID, \u0111\u1ed9 li\u00ean k\u1ebft v\u00e0 c\u00e1c m\u1eabu thi\u1ebft k\u1ebf. 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