{"id":1876,"date":"2026-04-10T15:40:51","date_gmt":"2026-04-10T15:40:51","guid":{"rendered":"https:\/\/www.go-diagram.com\/vi\/uml-package-diagram-guide\/"},"modified":"2026-04-10T15:40:51","modified_gmt":"2026-04-10T15:40:51","slug":"uml-package-diagram-guide","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/vi\/uml-package-diagram-guide\/","title":{"rendered":"T\u1ed5ng quan to\u00e0n di\u1ec7n: B\u1ea3n \u0111\u1ed3 h\u00e0nh tr\u00ecnh cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u \u0111\u1ec3 th\u00e0nh th\u1ea1o s\u01a1 \u0111\u1ed3 g\u00f3i UML"},"content":{"rendered":"<p>Ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m th\u01b0\u1eddng \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi quy ho\u1ea1ch \u0111\u00f4 th\u1ecb. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t th\u00e0nh ph\u1ed1 c\u1ea7n c\u00e1c khu v\u1ef1c, v\u00f9ng v\u00e0 \u0111\u01b0\u1eddng x\u00e1 \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng, m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m ph\u1ee9c t\u1ea1p c\u1ea7n c\u00e1c nh\u00f3m logic \u0111\u1ec3 duy tr\u00ec kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec. Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p nhi\u1ec1u c\u00f4ng c\u1ee5 cho m\u1ee5c \u0111\u00edch n\u00e0y, nh\u01b0ng \u00edt c\u00f3 g\u00ec quan tr\u1ecdng b\u1eb1ng vi\u1ec7c t\u1ed5 ch\u1ee9c c\u1ea5p cao nh\u01b0 s\u01a1 \u0111\u1ed3 g\u00f3i UML<strong>S\u01a1 \u0111\u1ed3 g\u00f3i UML<\/strong>. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u1ea5u tr\u00fac, c\u00fa ph\u00e1p v\u00e0 \u1ee9ng d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c c\u1ee7a s\u01a1 \u0111\u1ed3 g\u00f3i. D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac microservices hay t\u1ed5 ch\u1ee9c m\u00e3 ngu\u1ed3n \u0111\u01a1n th\u1ec3, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 giao ti\u1ebfp hi\u1ec7u qu\u1ea3.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Cartoon infographic titled 'UML Package Diagrams: A Beginner's Roadmap' illustrating software architecture fundamentals: folder-style package icons with nesting hierarchy, relationship symbols (dependency dashed arrows, import double-arrows, access, realization), four organization strategies (layered architecture, feature-based, domain-driven, technology-based), e-commerce example showing CustomerModule-OrderModule-ProductModule dependencies, warning signs for common pitfalls (God Package, deep nesting, circular dependencies, mixing concerns), and best practices checklist. Bright friendly cartoon aesthetic with developer mascot, pastel color palette, 16:9 layout designed for software engineers learning UML package diagram structure and dependency management.\" decoding=\"async\" src=\"https:\/\/www.go-diagram.com\/wp-content\/uploads\/2026\/04\/uml-package-diagrams-beginners-roadmap-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>S\u01a1 \u0111\u1ed3 g\u00f3i UML l\u00e0 g\u00ec? \ud83d\udce6<\/h2>\n<p>S\u01a1 \u0111\u1ed3 g\u00f3i UML l\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ed5 ch\u1ee9c c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c nh\u00f3m. Nh\u1eefng nh\u00f3m n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0<strong>g\u00f3i<\/strong>. H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng c\u00e1c g\u00f3i nh\u01b0 c\u00e1c th\u01b0 m\u1ee5c trong h\u1ec7 th\u1ed1ng t\u1eadp tin, nh\u01b0ng v\u1edbi kh\u1ea3 n\u0103ng b\u1ed5 sung l\u00e0 \u0111\u1ecbnh ngh\u0129a c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang. Ch\u00fang kh\u00f4ng nh\u1eb1m m\u1ee5c \u0111\u00edch hi\u1ec3n th\u1ecb chi ti\u1ebft t\u1eebng l\u1edbp hay \u0111\u1ed1i t\u01b0\u1ee3ng ri\u00eang l\u1ebb. Thay v\u00e0o \u0111\u00f3, ch\u00fang cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan to\u00e0n c\u1ea3nh v\u1ec1 ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng.<\/p>\n<p>M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a s\u01a1 \u0111\u1ed3 g\u00f3i l\u00e0 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p. Khi h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n, s\u1ed1 l\u01b0\u1ee3ng l\u1edbp c\u00f3 th\u1ec3 tr\u1edf n\u00ean kh\u00f3 ki\u1ec3m so\u00e1t. B\u1eb1ng c\u00e1ch \u0111\u00f3ng g\u00f3i c\u00e1c l\u1edbp li\u00ean quan v\u00e0o c\u00e1c g\u00f3i, c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 c\u00f3 th\u1ec3 gi\u1ea3m t\u1ea3i nh\u1eadn th\u1ee9c. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u \u0111\u01b0\u1ee3c b\u1ed1 c\u1ee5c h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng b\u1ecb m\u1eafc k\u1eb9t v\u00e0o chi ti\u1ebft tri\u1ec3n khai.<\/p>\n<h3>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/h3>\n<ul>\n<li><strong>Nh\u00f3m logic:<\/strong>T\u1ed5 ch\u1ee9c c\u00e1c th\u00e0nh ph\u1ea7n d\u1ef1a tr\u00ean ch\u1ee9c n\u0103ng, h\u1ec7 th\u1ed1ng con ho\u1eb7c t\u1ea7ng.<\/li>\n<li><strong>Tr\u1eebu t\u01b0\u1ee3ng:<\/strong>\u1ea8n c\u00e1c chi ti\u1ebft b\u00ean trong \u0111\u1ec3 t\u1eadp trung v\u00e0o c\u1ea5u tr\u00fac c\u1ea5p cao.<\/li>\n<li><strong>Qu\u1ea3n l\u00fd ph\u1ee5 thu\u1ed9c:<\/strong>Tr\u1ef1c quan h\u00f3a c\u00e1ch c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c l\u1eabn nhau.<\/li>\n<li><strong>Kh\u00f4ng gian t\u00ean:<\/strong>Cung c\u1ea5p kh\u00f4ng gian t\u00ean \u0111\u1ec3 gi\u1ea3i quy\u1ebft xung \u0111\u1ed9t t\u00ean gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n.<\/li>\n<\/ul>\n<h2>C\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i v\u00e0 c\u00fa ph\u00e1p \ud83d\udee0\ufe0f<\/h2>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c ng\u00f4n ng\u1eef tr\u1ef1c quan c\u1ee7a UML l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 hi\u1ec7u qu\u1ea3. S\u01a1 \u0111\u1ed3 g\u00f3i bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee5 th\u1ec3, m\u1ed7i th\u00e0nh ph\u1ea7n ph\u1ee5c v\u1ee5 m\u1ed9t m\u1ee5c \u0111\u00edch ri\u00eang bi\u1ec7t. \u1ede \u0111\u00e2y kh\u00f4ng c\u00f3 l\u1ef1a ch\u1ecdn ng\u1eabu nhi\u00ean n\u00e0o; m\u1ed7i k\u00fd hi\u1ec7u \u0111\u1ec1u truy\u1ec1n t\u1ea3i th\u00f4ng tin c\u1ea5u tr\u00fac c\u1ee5 th\u1ec3.<\/p>\n<h3>1. Bi\u1ec3u t\u01b0\u1ee3ng G\u00f3i<\/h3>\n<p>B\u1ed9 ph\u1eadn c\u01a1 b\u1ea3n nh\u1ea5t l\u00e0 ch\u00ednh g\u00f3i. V\u1ec1 m\u1eb7t tr\u1ef1c quan, n\u00f3 xu\u1ea5t hi\u1ec7n nh\u01b0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 m\u1ed9t tab \u1edf g\u00f3c tr\u00ean b\u00ean tr\u00e1i. Tab n\u00e0y t\u1ea1o cho n\u00f3 v\u1ebb ngo\u00e0i gi\u1ed1ng nh\u01b0 m\u1ed9t th\u01b0 m\u1ee5c. T\u00ean c\u1ee7a g\u00f3i \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u00ean trong th\u00e2n h\u00ecnh ch\u1eef nh\u1eadt ho\u1eb7c tr\u00ean tab.<\/p>\n<ul>\n<li><strong>\u0110\u1ed9 hi\u1ec3n th\u1ecb:<\/strong>Trong khi c\u00e1c g\u00f3i th\u01b0\u1eddng \u0111\u1ea1i di\u1ec7n cho m\u1ed9t kh\u00f4ng gian t\u00ean, \u0111\u1ed9 hi\u1ec3n th\u1ecb c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 l\u00e0 c\u00f4ng khai ho\u1eb7c ri\u00eang t\u01b0 t\u00f9y theo chu\u1ea9n \u0111\u01b0\u1ee3c tu\u00e2n theo.<\/li>\n<li><strong>Kh\u00f4ng gian t\u00ean:<\/strong>T\u00ean b\u00ean trong m\u1ed9t g\u00f3i l\u00e0 c\u1ee5c b\u1ed9 \u0111\u1ed1i v\u1edbi g\u00f3i \u0111\u00f3, tr\u1eeb khi \u0111\u01b0\u1ee3c nh\u1eadp ho\u1eb7c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng.<\/li>\n<\/ul>\n<h3>2. G\u00f3i l\u1ed3ng gh\u00e9p<\/h3>\n<p>C\u00e1c g\u00f3i c\u00f3 th\u1ec3 ch\u1ee9a c\u00e1c g\u00f3i kh\u00e1c. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p t\u1ed5 ch\u1ee9c theo c\u1ea5p b\u1eadc. M\u1ed9t h\u1ec7 th\u1ed1ng l\u1edbn c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t g\u00f3i c\u1ea5p cao nh\u1ea5t t\u00ean l\u00e0<code>SystemCore<\/code>, ch\u1ee9a c\u00e1c g\u00f3i con nh\u01b0<code>X\u00e1c th\u1ef1c<\/code>, <code>C\u01a1 s\u1edf d\u1eef li\u1ec7u<\/code>, v\u00e0 <code>Giao di\u1ec7n<\/code>. Vi\u1ec7c l\u1ed3ng gh\u00e9p n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh r\u00f5 ranh gi\u1edbi gi\u1eefa c\u00e1c h\u1ec7 th\u1ed1ng con.<\/p>\n<h3>3. Ghi ch\u00fa v\u00e0 nh\u1eadn x\u00e9t<\/h3>\n<p>Gi\u1ed1ng nh\u01b0 b\u1ea5t k\u1ef3 s\u01a1 \u0111\u1ed3 UML n\u00e0o, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u00ednh k\u00e8m ghi ch\u00fa v\u00e0o c\u00e1c g\u00f3i. Ch\u00fang \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt nh\u1ecf c\u00f3 g\u00f3c b\u1ecb g\u1eadp l\u1ea1i. Ch\u00fang h\u1eefu \u00edch \u0111\u1ec3 th\u00eam d\u1eef li\u1ec7u m\u00f4 t\u1ea3, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00f4ng tin phi\u00ean b\u1ea3n, chi ti\u1ebft ch\u1ee7 s\u1edf h\u1eefu ho\u1eb7c l\u00fd do thi\u1ebft k\u1ebf c\u1ee5 th\u1ec3.<\/p>\n<h2>C\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c g\u00f3i \ud83d\udd17<\/h2>\n<p>Vi\u1ec7c t\u1ed5 ch\u1ee9c c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ec9 l\u00e0 m\u1ed9t n\u1eeda cu\u1ed9c chi\u1ebfn. Hi\u1ec3u c\u00e1ch c\u00e1c g\u00f3i n\u00e0y t\u01b0\u01a1ng t\u00e1c m\u1edbi l\u00e0 n\u01a1i gi\u00e1 tr\u1ecb ki\u1ebfn tr\u00fac th\u1ef1c s\u1ef1 n\u1eb1m \u1edf \u0111\u00f3. UML \u0111\u1ecbnh ngh\u0129a c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee5 th\u1ec3 cho c\u00e1c g\u00f3i, kh\u00e1c bi\u1ec7t v\u1edbi nh\u1eefng m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c l\u1edbp. Vi\u1ec7c hi\u1ec3u sai c\u00e1c m\u1ed1i quan h\u1ec7 n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng.<\/p>\n<h3>Ph\u1ee5 thu\u1ed9c (\u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t)<\/h3>\n<p>M\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c l\u00e0 k\u1ebft n\u1ed1i ph\u1ed5 bi\u1ebfn nh\u1ea5t. N\u00f3 cho th\u1ea5y r\u1eb1ng m\u1ed9t g\u00f3i c\u1ea7n g\u00f3i kh\u00e1c \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng. N\u1ebfu g\u00f3i \u0111\u00edch thay \u0111\u1ed5i, g\u00f3i ngu\u1ed3n c\u00f3 th\u1ec3 c\u1ea7n thay \u0111\u1ed5i theo. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean m\u1edf.<\/p>\n<ul>\n<li><strong>S\u1eed d\u1ee5ng:<\/strong> G\u00f3i A s\u1eed d\u1ee5ng c\u00e1c giao di\u1ec7n ho\u1eb7c l\u1edbp \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong G\u00f3i B.<\/li>\n<li><strong>H\u01b0\u1edbng:<\/strong> M\u0169i t\u00ean ch\u1ec9 t\u1eeb g\u00f3i ph\u1ee5 thu\u1ed9c \u0111\u1ebfn g\u00f3i cung c\u1ea5p.<\/li>\n<\/ul>\n<h3>Nh\u1eadp (\u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t v\u1edbi m\u0169i t\u00ean k\u00e9p)<\/h3>\n<p>Nh\u1eadp l\u00e0 m\u1ed9t lo\u1ea1i ph\u1ee5 thu\u1ed9c c\u1ee5 th\u1ec3. N\u00f3 ng\u1ee5 \u00fd r\u1eb1ng c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a g\u00f3i cung c\u1ea5p \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o kh\u00f4ng gian t\u00ean c\u1ee5c b\u1ed9 c\u1ee7a g\u00f3i nh\u1eadp v\u00e0o. \u0110i\u1ec1u n\u00e0y t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t l\u1ec7nh <code>import<\/code>trong c\u00e1c ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh nh\u01b0 Java ho\u1eb7c Python.<\/p>\n<h3>Truy c\u1eadp (\u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t v\u1edbi m\u0169i t\u00ean m\u1edf)<\/h3>\n<p>Truy c\u1eadp cho ph\u00e9p m\u1ed9t g\u00f3i truy c\u1eadp v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n c\u00f4ng khai c\u1ee7a g\u00f3i kh\u00e1c. N\u00f3 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ph\u1ee5 thu\u1ed9c nh\u01b0ng th\u01b0\u1eddng ng\u1ee5 \u00fd m\u1ed9t m\u1ee9c \u0111\u1ed9 hi\u1ec3n th\u1ecb c\u1ee5 th\u1ec3, n\u01a1i c\u00e1c chi ti\u1ebft tri\u1ec3n khai n\u1ed9i b\u1ed9 c\u1ee7a g\u00f3i cung c\u1ea5p v\u1eabn \u0111\u01b0\u1ee3c \u1ea9n, trong khi API c\u00f4ng khai \u0111\u01b0\u1ee3c ti\u1ebft l\u1ed9.<\/p>\n<h3>Th\u1ef1c hi\u1ec7n (\u0111\u01b0\u1eddng li\u1ec1n v\u1edbi tam gi\u00e1c r\u1ed7ng)<\/h3>\n<p>M\u1eb7c d\u00f9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp, th\u1ef1c hi\u1ec7n c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n trong s\u01a1 \u0111\u1ed3 g\u00f3i n\u1ebfu m\u1ed9t g\u00f3i \u0111ang th\u1ef1c hi\u1ec7n m\u1ed9t giao di\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong g\u00f3i kh\u00e1c. \u0110i\u1ec1u n\u00e0y \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n nh\u01b0ng v\u1eabn h\u1ee3p l\u1ec7 trong c\u00e1c ki\u1ebfn tr\u00fac l\u1edbp ph\u1ee9c t\u1ea1p.<\/p>\n<h2>T\u00ednh hi\u1ec3n th\u1ecb v\u00e0 \u0111\u00f3ng g\u00f3i \ud83d\udee1\ufe0f<\/h2>\n<p>S\u01a1 \u0111\u1ed3 g\u00f3i kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ebd c\u00e1c h\u00ecnh h\u1ed9p; ch\u00fang l\u00e0 v\u1ec1 x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi. \u0110\u00f3ng g\u00f3i l\u00e0 m\u1ed9t nguy\u00ean t\u1eafc c\u1ed1t l\u00f5i trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, v\u00e0 c\u00e1c g\u00f3i th\u1ef1c thi \u0111i\u1ec1u n\u00e0y \u1edf c\u1ea5p \u0111\u1ed9 v\u0129 m\u00f4. B\u1ea1n ph\u1ea3i x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 n\u00e0o c\u1ee7a m\u1ed9t g\u00f3i l\u00e0 hi\u1ec3n th\u1ecb v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i.<\/p>\n<p>Th\u00f4ng th\u01b0\u1eddng, c\u00e1c g\u00f3i ho\u1ea1t \u0111\u1ed9ng theo m\u00f4 h\u00ecnh trong \u0111\u00f3:<\/p>\n<ul>\n<li><strong>Th\u00e0nh ph\u1ea7n c\u00f4ng khai:<\/strong> C\u00f3 th\u1ec3 truy c\u1eadp b\u1edfi b\u1ea5t k\u1ef3 g\u00f3i n\u00e0o kh\u00e1c.<\/li>\n<li><strong>Th\u00e0nh ph\u1ea7n ri\u00eang t\u01b0:<\/strong> Ch\u1ec9 c\u00f3 th\u1ec3 truy c\u1eadp b\u00ean trong c\u00f9ng m\u1ed9t g\u00f3i.<\/li>\n<li><strong> C\u00e1c th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7:<\/strong> C\u00f3 th\u1ec3 truy c\u1eadp b\u1edfi ch\u00ednh g\u00f3i \u0111\u00f3 v\u00e0 c\u00e1c g\u00f3i con c\u1ee7a n\u00f3.<\/li>\n<\/ul>\n<p>Khi t\u1ea1o s\u01a1 \u0111\u1ed3, b\u1ea1n n\u00ean \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng c\u00e1c r\u00e0ng bu\u1ed9c n\u00e0y. \u0110i\u1ec1u n\u00e0y ng\u0103n c\u1ea3n c\u00e1c nh\u00f3m kh\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c chi ti\u1ebft tri\u1ec3n khai n\u1ed9i b\u1ed9 c\u00f3 th\u1ec3 thay \u0111\u1ed5i. N\u00f3 thi\u1ebft l\u1eadp m\u1ed9t h\u1ee3p \u0111\u1ed3ng gi\u1eefa c\u00e1c module.<\/p>\n<h2>Thi\u1ebft k\u1ebf m\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p h\u1ee3p l\u00fd \ud83c\udf33<\/h2>\n<p>S\u1eafp x\u1ebfp c\u00e1c g\u00f3i l\u00e0 m\u1ed9t ngh\u1ec7 thu\u1eadt. S\u1ef1 t\u1ed5 ch\u1ee9c k\u00e9m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ed9t m\u1ea1ng l\u01b0\u1edbi c\u00e1c ph\u1ee5 thu\u1ed9c r\u1ed1i ren, g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 t\u00e1i c\u1ea5u tr\u00fac. B\u1ea3ng sau \u0111\u00e2y n\u00eau ra c\u00e1c chi\u1ebfn l\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn \u0111\u1ec3 t\u1ed5 ch\u1ee9c c\u00e1c g\u00f3i trong m\u1ed9t s\u01a1 \u0111\u1ed3.<\/p>\n<table>\n<thead>\n<tr>\n<th>Chi\u1ebfn l\u01b0\u1ee3c<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<th>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng t\u1ed1t nh\u1ea5t<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Ki\u1ebfn tr\u00fac theo l\u1edbp<\/strong><\/td>\n<td>S\u1eafp x\u1ebfp c\u00e1c g\u00f3i theo l\u1edbp k\u1ef9 thu\u1eadt (giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng, Logic kinh doanh, D\u1eef li\u1ec7u).<\/td>\n<td>C\u00e1c \u1ee9ng d\u1ee5ng monolithic v\u1edbi s\u1ef1 ph\u00e2n t\u00e1ch r\u00f5 r\u00e0ng gi\u1eefa c\u00e1c v\u1ea5n \u0111\u1ec1.<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u1ef1a tr\u00ean t\u00ednh n\u0103ng<\/strong><\/td>\n<td>S\u1eafp x\u1ebfp c\u00e1c g\u00f3i theo kh\u1ea3 n\u0103ng kinh doanh (Thanh to\u00e1n, Qu\u1ea3n l\u00fd ng\u01b0\u1eddi d\u00f9ng).<\/td>\n<td>Microservices ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng monolithic theo m\u00f4-\u0111un.<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u1ef1a tr\u00ean mi\u1ec1n<\/strong><\/td>\n<td>S\u1eafp x\u1ebfp c\u00e1c g\u00f3i theo c\u00e1c kh\u00e1i ni\u1ec7m mi\u1ec1n kinh doanh.<\/td>\n<td>C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p n\u01a1i c\u00e1c quy t\u1eafc kinh doanh l\u00e0 then ch\u1ed1t.<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7<\/strong><\/td>\n<td>S\u1eafp x\u1ebfp c\u00e1c g\u00f3i theo b\u1ed9 c\u00f4ng ngh\u1ec7 (C\u01a1 s\u1edf d\u1eef li\u1ec7u, M\u00e1y ch\u1ee7 web).<\/td>\n<td>C\u00e1c h\u1ec7 th\u1ed1ng n\u1eb7ng v\u1ec1 h\u1ea1 t\u1ea7ng ho\u1eb7c t\u00edch h\u1ee3p c\u0169.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quy tr\u00ecnh t\u1ea1o t\u1eebng b\u01b0\u1edbc \ud83d\udcdd<\/h2>\n<p>Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 g\u00f3i kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 c\u1ea7n v\u1ed9i v\u00e0ng. N\u00f3 \u0111\u00f2i h\u1ecfi s\u1ef1 l\u00ean k\u1ebf ho\u1ea1ch v\u00e0 l\u1eb7p l\u1ea1i. H\u00e3y tu\u00e2n theo lu\u1ed3ng logic n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n mang l\u1ea1i gi\u00e1 tr\u1ecb thay v\u00ec g\u00e2y r\u1ed1i m\u1eaft.<\/p>\n<ol>\n<li><strong>X\u00e1c \u0111\u1ecbnh ranh gi\u1edbi:<\/strong> X\u00e1c \u0111\u1ecbnh c\u00e1c h\u1ec7 th\u1ed1ng con ch\u00ednh c\u1ee7a \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Nh\u1eefng khu v\u1ef1c ch\u1ee9c n\u0103ng ri\u00eang bi\u1ec7t l\u00e0 g\u00ec?<\/li>\n<li><strong>Nh\u00f3m c\u00e1c th\u00e0nh ph\u1ea7n:<\/strong> \u0110\u1eb7t c\u00e1c l\u1edbp, giao di\u1ec7n v\u00e0 th\u00e0nh ph\u1ea7n li\u00ean quan v\u00e0o c\u00e1c g\u00f3i n\u00e0y. Tr\u00e1nh r\u1ea3i r\u00e1c logic li\u00ean quan qua nhi\u1ec1u th\u01b0 m\u1ee5c kh\u00e1c nhau.<\/li>\n<li><strong>X\u00e1c \u0111\u1ecbnh c\u00e1c ph\u1ee5 thu\u1ed9c:<\/strong> V\u1ebd c\u00e1c \u0111\u01b0\u1eddng \u0111\u1ec3 th\u1ec3 hi\u1ec7n c\u00e1ch c\u00e1c g\u00f3i t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. H\u00e3y t\u1ef1 h\u1ecfi b\u1ea3n th\u00e2n: G\u00f3i n\u00e0y c\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o g\u00f3i kia kh\u00f4ng?<\/li>\n<li><strong>Xem x\u00e9t \u0111\u1ec3 ph\u00e1t hi\u1ec7n chu tr\u00ecnh:<\/strong> Ki\u1ec3m tra c\u00e1c ph\u1ee5 thu\u1ed9c v\u00f2ng l\u1eb7p. G\u00f3i A ph\u1ee5 thu\u1ed9c v\u00e0o G\u00f3i B, m\u00e0 G\u00f3i B l\u1ea1i ph\u1ee5 thu\u1ed9c v\u00e0o G\u00f3i A, s\u1ebd t\u1ea1o ra s\u1ef1 li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd r\u1ea5t kh\u00f3 duy tr\u00ec.<\/li>\n<li><strong>Tinh ch\u1ec9nh t\u00ean:<\/strong> \u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 t\u00ean g\u00f3i \u0111\u1ec1u m\u00f4 t\u1ea3 r\u00f5 r\u00e0ng. Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c t\u00ean chung chung nh\u01b0 <code>pkg1<\/code> ho\u1eb7c <code>utils<\/code>.<\/li>\n<\/ol>\n<h2>B\u1ed1i c\u1ea3nh th\u1ef1c t\u1ebf: H\u1ec7 th\u1ed1ng Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed \ud83d\uded2<\/h2>\n<p>\u0110\u1ec3 minh h\u1ecda c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y, h\u00e3y c\u00f9ng xem x\u00e9t m\u1ed9t \u1ee9ng d\u1ee5ng Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed gi\u1ea3 \u0111\u1ecbnh. Ch\u00fang ta s\u1ebd ph\u00e2n t\u00edch ki\u1ebfn tr\u00fac th\u00e0nh c\u00e1c g\u00f3i logic \u0111\u1ec3 minh ch\u1ee9ng c\u00e1ch bi\u1ec3u \u0111\u1ed3 g\u00f3i l\u00e0m r\u00f5 c\u1ea5u tr\u00fac h\u1ec7 th\u1ed1ng.<\/p>\n<h3>C\u1ea5u tr\u00fac c\u1ea5p cao<\/h3>\n<p>T\u1ea1i c\u1ea5p g\u1ed1c, ch\u00fang ta c\u00f3 m\u1ed9t g\u00f3i t\u00ean l\u00e0 <code>CommerceSystem<\/code>. B\u00ean trong \u0111\u00f3, ch\u00fang ta x\u00e1c \u0111\u1ecbnh ba g\u00f3i con ch\u00ednh:<\/p>\n<ul>\n<li><strong>CustomerModule:<\/strong> X\u1eed l\u00fd \u0111\u0103ng k\u00fd ng\u01b0\u1eddi d\u00f9ng, \u0111\u0103ng nh\u1eadp v\u00e0 qu\u1ea3n l\u00fd h\u1ed3 s\u01a1.<\/li>\n<li><strong>OrderModule:<\/strong> Qu\u1ea3n l\u00fd c\u00e1c thao t\u00e1c gi\u1ecf h\u00e0ng, quy tr\u00ecnh thanh to\u00e1n v\u00e0 l\u1ecbch s\u1eed \u0111\u01a1n h\u00e0ng.<\/li>\n<li><strong>ProductModule:<\/strong> Ki\u1ec3m so\u00e1t t\u1ed3n kho, chi ti\u1ebft danh m\u1ee5c v\u00e0 gi\u00e1 c\u1ea3.<\/li>\n<\/ul>\n<h3>C\u00e1c ph\u1ee5 thu\u1ed9c trong h\u00e0nh \u0111\u1ed9ng<\/h3>\n<p>Trong t\u00ecnh hu\u1ed1ng n\u00e0y, <code>OrderModule<\/code> c\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o <code>ProductModule<\/code>. Khi ng\u01b0\u1eddi d\u00f9ng \u0111\u1eb7t h\u00e0ng, h\u1ec7 th\u1ed1ng ph\u1ea3i x\u00e1c minh t\u00ecnh tr\u1ea1ng s\u1eb5n c\u00f3 c\u1ee7a s\u1ea3n ph\u1ea9m. M\u1ed1i quan h\u1ec7 n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t m\u0169i t\u00ean ph\u1ee5 thu\u1ed9c t\u1eeb <code>OrderModule<\/code> \u0111\u1ebfn <code>ProductModule<\/code>.<\/p>\n<p>H\u01a1n n\u1eefa, <code>CustomerModule<\/code> ph\u1ee5 thu\u1ed9c v\u00e0o <code>OrderModule<\/code> \u0111\u1ec3 truy xu\u1ea5t l\u1ecbch s\u1eed \u0111\u01a1n h\u00e0ng c\u1ee5 th\u1ec3 theo ng\u01b0\u1eddi d\u00f9ng. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t lu\u1ed3ng th\u00f4ng tin r\u00f5 r\u00e0ng.<\/p>\n<h3>C\u00e1c g\u00f3i n\u1ed9i b\u1ed9<\/h3>\n<p>Ch\u00fang ta c\u00f3 th\u1ec3 chia nh\u1ecf th\u00eam <code>OrderModule<\/code>. B\u00ean trong, ch\u00fang ta c\u00f3 th\u1ec3 c\u00f3 <code>PaymentProcessor<\/code> v\u00e0 <code>ShippingHandler<\/code>. G\u00f3i <code>OrderModule<\/code> nh\u1eadp c\u00e1c giao di\u1ec7n t\u1eeb c\u00e1c g\u00f3i con n\u00e0y. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y logic c\u1ed1t l\u00f5i ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c kh\u1ea3 n\u0103ng c\u1ee5 th\u1ec3 n\u00e0y m\u00e0 kh\u00f4ng c\u1ea7n bi\u1ebft \u0111\u1ebfn c\u00e1ch tri\u1ec3n khai b\u00ean trong c\u1ee7a ch\u00fang.<\/p>\n<h2>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang \u26a0\ufe0f<\/h2>\n<p>Ngay c\u1ea3 nh\u1eefng ki\u1ebfn tr\u00fac s\u01b0 c\u00f3 kinh nghi\u1ec7m c\u0169ng m\u1eafc sai l\u1ea7m khi thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac g\u00f3i. Vi\u1ec7c nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng \u0111i\u1ec3m nguy hi\u1ec3m n\u00e0y c\u00f3 th\u1ec3 gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian t\u00e1i c\u1ea5u tr\u00fac \u0111\u00e1ng k\u1ec3 sau n\u00e0y.<\/p>\n<h3>1. G\u00f3i &#8216;Th\u1ea7n&#8217; (God Package)<\/h3>\n<p>Tr\u00e1nh t\u1ea1o ra m\u1ed9t g\u00f3i duy nh\u1ea5t ch\u1ee9a m\u1ecdi th\u1ee9. N\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t g\u00f3i t\u00ean l\u00e0 <code>AllTheThings<\/code>, b\u1ea1n \u0111\u00e3 th\u1ea5t b\u1ea1i trong vi\u1ec7c t\u1ed5 ch\u1ee9c h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh. \u0110i\u1ec1u n\u00e0y khi\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc v\u00e0 m\u00e3 ngu\u1ed3n tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 qu\u1ea3n l\u00fd.<\/p>\n<h3>2. \u0110\u1ec7 quy s\u00e2u<\/h3>\n<p>M\u1eb7c d\u00f9 vi\u1ec7c l\u1ed3ng gh\u00e9p c\u00f3 \u00edch, nh\u01b0ng \u0111i qu\u00e1 s\u00e2u (v\u00ed d\u1ee5 nh\u01b0 <code>A &gt; B &gt; C &gt; D &gt; E<\/code>) s\u1ebd g\u00e2y nh\u1ea7m l\u1eabn. H\u1ea1n ch\u1ebf \u0111\u1ed9 s\u00e2u c\u1ee7a b\u1ea1n \u1edf ba ho\u1eb7c b\u1ed1n c\u1ea5p. N\u1ebfu b\u1ea1n c\u1ea7n nhi\u1ec1u h\u01a1n, h\u00e3y xem x\u00e9t l\u1ea1i c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u1ee7a m\u00ecnh.<\/p>\n<h3>3. Ph\u1ee5 thu\u1ed9c v\u00f2ng<\/h3>\n<p>Nh\u01b0 \u0111\u00e3 n\u00f3i \u1edf tr\u00ean, c\u00e1c ph\u1ee5 thu\u1ed9c v\u00f2ng l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a m\u00e3 ngu\u1ed3n k\u00e9m. N\u1ebfu G\u00f3i A nh\u1eadp G\u00f3i B, v\u00e0 G\u00f3i B nh\u1eadp G\u00f3i A, b\u1ea1n s\u1ebd t\u1ea1o ra m\u1ed9t v\u00f2ng l\u1eb7p. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi hai module c\u1ea7n chia s\u1ebb c\u00e1c th\u1ef1c th\u1ec3 chung. Gi\u1ea3i ph\u00e1p th\u01b0\u1eddng l\u00e0 tr\u00edch xu\u1ea5t c\u00e1c th\u1ef1c th\u1ec3 chung n\u00e0y v\u00e0o m\u1ed9t g\u00f3i th\u1ee9 ba chung.<\/p>\n<h3>4. Tr\u1ed9n l\u1eabn c\u00e1c v\u1ea5n \u0111\u1ec1<\/h3>\n<p>\u0110\u1eebng tr\u1ed9n l\u1eabn c\u00e1c v\u1ea5n \u0111\u1ec1 k\u1ef9 thu\u1eadt v\u1edbi logic kinh doanh. M\u1ed9t g\u00f3i kh\u00f4ng n\u00ean ch\u1ee9a c\u1ea3 logic k\u1ebft n\u1ed1i c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 logic giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng, tr\u1eeb khi c\u00f3 l\u00fd do c\u1ee5 th\u1ec3. Gi\u1eef c\u00e1c l\u1edbp k\u1ef9 thu\u1eadt t\u00e1ch bi\u1ec7t kh\u1ecfi c\u00e1c l\u1edbp kinh doanh.<\/p>\n<h2>S\u01a1 \u0111\u1ed3 g\u00f3i so v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 UML kh\u00e1c \ud83d\udcca<\/h2>\n<p>D\u1ec5 d\u00e0ng nh\u1ea7m l\u1eabn s\u01a1 \u0111\u1ed3 g\u00f3i v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac kh\u00e1c. Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t s\u1ebd \u0111\u1ea3m b\u1ea3o b\u1ea1n s\u1eed d\u1ee5ng \u0111\u00fang c\u00f4ng c\u1ee5 cho c\u00f4ng vi\u1ec7c.<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i s\u01a1 \u0111\u1ed3<\/th>\n<th>Tr\u1ecdng t\u00e2m<\/th>\n<th>Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>S\u01a1 \u0111\u1ed3 g\u00f3i<\/strong><\/td>\n<td>T\u1ed5 ch\u1ee9c \u1edf c\u1ea5p \u0111\u1ed9 cao v\u00e0 kh\u00f4ng gian t\u00ean.<\/td>\n<td>T\u1ed5ng quan ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng, ranh gi\u1edbi module.<\/td>\n<\/tr>\n<tr>\n<td><strong>S\u01a1 \u0111\u1ed3 l\u1edbp<\/strong><\/td>\n<td>C\u1ea5u tr\u00fac t\u0129nh c\u1ee7a l\u1edbp v\u00e0 thu\u1ed9c t\u00ednh.<\/td>\n<td>Thi\u1ebft k\u1ebf l\u01b0\u1ee3c \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u, lu\u1ed3ng logic chi ti\u1ebft.<\/td>\n<\/tr>\n<tr>\n<td><strong>S\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n<\/strong><\/td>\n<td>C\u00e1c th\u00e0nh ph\u1ea7n v\u1eadt l\u00fd v\u00e0 giao di\u1ec7n c\u1ee7a ch\u00fang.<\/td>\n<td>C\u00e1c \u0111\u01a1n v\u1ecb tri\u1ec3n khai, c\u1ea5u tr\u00fac th\u01b0 vi\u1ec7n.<\/td>\n<\/tr>\n<tr>\n<td><strong>S\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n<\/strong><\/td>\n<td>C\u00e1c th\u00e0nh ph\u1ea7n v\u1eadt l\u00fd v\u00e0 giao di\u1ec7n c\u1ee7a ch\u00fang.<\/td>\n<td>C\u00e1c \u0111\u01a1n v\u1ecb tri\u1ec3n khai, c\u1ea5u tr\u00fac th\u01b0 vi\u1ec7n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Trong khi S\u01a1 \u0111\u1ed3 l\u1edbp \u0111i s\u00e2u v\u00e0o thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c, S\u01a1 \u0111\u1ed3 g\u00f3i gi\u1eef \u1edf m\u1ee9c cao. S\u1eed d\u1ee5ng S\u01a1 \u0111\u1ed3 g\u00f3i khi b\u1ea1n c\u1ea7n gi\u1ea3i th\u00edch h\u1ec7 th\u1ed1ng cho m\u1ed9t b\u00ean li\u00ean quan kh\u00f4ng c\u1ea7n xem t\u1eebng bi\u1ebfn. S\u1eed d\u1ee5ng S\u01a1 \u0111\u1ed3 l\u1edbp khi b\u1ea1n \u0111ang chuy\u1ec3n giao m\u00e3 ngu\u1ed3n cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n.<\/p>\n<h2>C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 duy tr\u00ec kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec \ud83d\udd04<\/h2>\n<p>M\u1ed9t s\u01a1 \u0111\u1ed3 l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u s\u1ed1ng. N\u00f3 ph\u1ea3i ph\u00e1t tri\u1ec3n c\u00f9ng v\u1edbi h\u1ec7 th\u1ed1ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 h\u01b0\u1edbng d\u1eabn \u0111\u1ec3 gi\u1eef cho s\u01a1 \u0111\u1ed3 g\u00f3i c\u1ee7a b\u1ea1n h\u1eefu \u00edch theo th\u1eddi gian.<\/p>\n<ul>\n<li><strong>T\u00ean g\u1ecdi nh\u1ea5t qu\u00e1n:<\/strong> S\u1eed d\u1ee5ng quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean chu\u1ea9n (v\u00ed d\u1ee5 nh\u01b0 <code>PascalCase<\/code> cho c\u00e1c g\u00f3i). \u0110i\u1ec1u n\u00e0y gi\u1ea3m thi\u1ec3u s\u1ef1 m\u01a1 h\u1ed3.<\/li>\n<li><strong>T\u1ed1i thi\u1ec3u h\u00f3a nh\u1eadp v\u00e0o:<\/strong> Ch\u1ec9 nh\u1eadp v\u00e0o nh\u1eefng g\u00ec th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft. S\u1eed d\u1ee5ng t\u00ean c\u00f3 \u0111\u1ecbnh danh khi c\u00f3 th\u1ec3 \u0111\u1ec3 gi\u1ea3m s\u1ef1 l\u1ed9n x\u1ed9n v\u1ec1 ph\u1ee5 thu\u1ed9c.<\/li>\n<li><strong>Ghi ch\u00e9p c\u00e1c thay \u0111\u1ed5i:<\/strong> N\u1ebfu m\u1ed9t ph\u1ee5 thu\u1ed9c thay \u0111\u1ed5i, h\u00e3y c\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 ngay l\u1eadp t\u1ee9c. M\u1ed9t s\u01a1 \u0111\u1ed3 l\u1ed7i th\u1eddi c\u00f2n t\u1ec7 h\u01a1n c\u1ea3 kh\u00f4ng c\u00f3 s\u01a1 \u0111\u1ed3 n\u00e0o.<\/li>\n<li><strong>S\u1eed d\u1ee5ng h\u1ed3 s\u01a1:<\/strong> N\u1ebfu l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 c\u1ee5 th\u1ec3 (nh\u01b0 Java ho\u1eb7c .NET), h\u00e3y s\u1eed d\u1ee5ng c\u00e1c h\u1ed3 s\u01a1 UML \u0111\u1ec3 m\u1edf r\u1ed9ng k\u00fd hi\u1ec7u m\u1ed9t c\u00e1ch ph\u00f9 h\u1ee3p m\u00e0 kh\u00f4ng l\u00e0m ph\u00e1 v\u1ee1 chu\u1ea9n.<\/li>\n<li><strong>Gi\u1eef \u0111\u01a1n gi\u1ea3n:<\/strong> N\u1ebfu m\u1ed9t s\u01a1 \u0111\u1ed3 c\u00f3 h\u01a1n 50 g\u00f3i, c\u00f3 th\u1ec3 n\u00f3 qu\u00e1 ph\u1ee9c t\u1ea1p. H\u00e3y chia nh\u1ecf th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 con.<\/li>\n<\/ul>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p \u2753<\/h2>\n<h3>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 g\u00f3i \u0111\u1ec3 t\u00e0i li\u1ec7u h\u00f3a kh\u00f4ng?<\/h3>\n<p>C\u00f3. Ch\u00fang r\u1ea5t t\u1ed1t cho vi\u1ec7c t\u00e0i li\u1ec7u h\u00f3a ki\u1ebfn tr\u00fac. Ch\u00fang cung c\u1ea5p b\u1ea3n \u0111\u1ed3 gi\u00fap c\u00e1c th\u00e0nh vi\u00ean m\u1edbi trong nh\u00f3m hi\u1ec3u nhanh b\u1ed1 c\u1ee5c h\u1ec7 th\u1ed1ng.<\/p>\n<h3>S\u01a1 \u0111\u1ed3 g\u00f3i c\u00f3 th\u1ec3 th\u1ef1c thi \u0111\u01b0\u1ee3c kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng. Ch\u00fang l\u00e0 bi\u1ec3u di\u1ec5n t\u0129nh. Ch\u00fang m\u00f4 t\u1ea3 c\u1ea5u tr\u00fac, ch\u1ee9 kh\u00f4ng ph\u1ea3i h\u00e0nh vi. B\u1ea1n kh\u00f4ng th\u1ec3 ch\u1ea1y m\u00e3 t\u1eeb m\u1ed9t s\u01a1 \u0111\u1ed3 g\u00f3i.<\/p>\n<h3>T\u00f4i ph\u1ea3i x\u1eed l\u00fd c\u00e1c th\u01b0 vi\u1ec7n b\u00ean th\u1ee9 ba nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p>Bi\u1ec3u di\u1ec5n c\u00e1c th\u01b0 vi\u1ec7n b\u00ean th\u1ee9 ba d\u01b0\u1edbi d\u1ea1ng c\u00e1c g\u00f3i. B\u1ea1n c\u00f3 th\u1ec3 \u0111\u00e1nh d\u1ea5u ch\u00fang l\u00e0 b\u00ean ngo\u00e0i ho\u1eb7c s\u1eed d\u1ee5ng m\u1ed9t ki\u1ec3u \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 ch\u1ec9 ra r\u1eb1ng ch\u00fang kh\u00f4ng n\u1eb1m d\u01b0\u1edbi s\u1ef1 ki\u1ec3m so\u00e1t c\u1ee7a b\u1ea1n. \u0110i\u1ec1u n\u00e0y l\u00e0m r\u00f5 ph\u1ea7n n\u00e0o c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ea1n s\u1edf h\u1eefu v\u00e0 ph\u1ea7n n\u00e0o b\u1ea1n s\u1eed d\u1ee5ng.<\/p>\n<h3>Th\u1ebf n\u1ebfu h\u1ec7 th\u1ed1ng c\u1ee7a t\u00f4i thay \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean th\u00ec sao?<\/h3>\n<p>T\u1eadp trung v\u00e0o c\u00e1c ph\u1ea7n \u1ed5n \u0111\u1ecbnh trong ki\u1ebfn tr\u00fac c\u1ee7a b\u1ea1n. N\u1ebfu c\u00e1c ranh gi\u1edbi thay \u0111\u1ed5i h\u00e0ng tu\u1ea7n, s\u01a1 \u0111\u1ed3 g\u00f3i c\u00f3 th\u1ec3 qu\u00e1 c\u1ee9ng nh\u1eafc. Trong m\u00f4i tr\u01b0\u1eddng linh ho\u1ea1t, h\u00e3y gi\u1eef s\u01a1 \u0111\u1ed3 \u1edf m\u1ee9c tr\u1eebu t\u01b0\u1ee3ng v\u00e0 c\u1eadp nh\u1eadt n\u00f3 trong c\u00e1c \u0111\u1ee3t ph\u00e1t tri\u1ec3n ki\u1ebfn tr\u00fac l\u1edbn.<\/p>\n<h3>C\u00e1c g\u00f3i c\u00f3 th\u1ec3 ch\u1ed3ng l\u1ea5n l\u00ean nhau kh\u00f4ng?<\/h3>\n<p>N\u00f3i chung, c\u00e1c g\u00f3i n\u00ean l\u00e0 kh\u00f4ng gian t\u00ean ri\u00eang bi\u1ec7t. C\u00e1c kh\u00f4ng gian t\u00ean ch\u1ed3ng l\u1ea5n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn xung \u0111\u1ed9t t\u00ean. N\u1ebfu c\u00e1c th\u00e0nh ph\u1ea7n thu\u1ed9c v\u1ec1 hai mi\u1ec1n, h\u00e3y t\u1ea1o m\u1ed9t g\u00f3i chung m\u00e0 c\u1ea3 hai \u0111\u1ec1u c\u00f3 th\u1ec3 truy c\u1eadp.<\/p>\n<h2>K\u1ebft lu\u1eadn \u2705<\/h2>\n<p>S\u01a1 \u0111\u1ed3 G\u00f3i UML l\u00e0 c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng \u0111\u1ec3 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p ph\u1ea7n m\u1ec1m. N\u00f3 gi\u00fap c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 h\u00ecnh dung khung x\u01b0\u01a1ng c\u1ee7a h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i ph\u1ee5 thu\u1ed9c r\u00f5 r\u00e0ng v\u00e0 c\u00e1c ranh gi\u1edbi \u0111\u01b0\u1ee3c t\u00f4n tr\u1ecdng. B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c nguy\u00ean t\u1eafc \u0111\u01b0\u1ee3c n\u00eau trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 kh\u00f4ng ch\u1ec9 t\u00e0i li\u1ec7u h\u00f3a h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh m\u00e0 c\u00f2n c\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf c\u1ee7a n\u00f3.<\/p>\n<p>H\u00e3y nh\u1edb r\u1eb1ng m\u1ed9t s\u01a1 \u0111\u1ed3 l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n giao ti\u1ebfp. N\u1ebfu \u0111\u1ed9i c\u1ee7a b\u1ea1n kh\u00f4ng th\u1ec3 hi\u1ec3u c\u1ea5u tr\u00fac trong v\u00f2ng n\u0103m ph\u00fat, s\u01a1 \u0111\u1ed3 \u0111\u00f3 \u0111\u00e3 th\u1ea5t b\u1ea1i m\u1ee5c \u0111\u00edch. H\u00e3y \u01b0u ti\u00ean s\u1ef1 r\u00f5 r\u00e0ng, nh\u1ea5t qu\u00e1n v\u00e0 nh\u00f3m logic. V\u1edbi th\u1ef1c h\u00e0nh, b\u1ea1n s\u1ebd th\u1ea5y vi\u1ec7c t\u1ed5 ch\u1ee9c h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh th\u00e0nh c\u00e1c g\u00f3i tr\u1edf n\u00ean t\u1ef1 nhi\u00ean, d\u1eabn \u0111\u1ebfn m\u00e3 ngu\u1ed3n s\u1ea1ch h\u01a1n v\u00e0 ki\u1ebfn tr\u00fac b\u1ec1n v\u1eefng h\u01a1n.<\/p>\n<p>B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch l\u1eadp b\u1ea3n \u0111\u1ed3 h\u1ec7 th\u1ed1ng hi\u1ec7n t\u1ea1i c\u1ee7a b\u1ea1n. X\u00e1c \u0111\u1ecbnh c\u00e1c ranh gi\u1edbi logic. V\u1ebd c\u00e1c k\u1ebft n\u1ed1i. Ki\u1ec3m tra c\u00e1c chu tr\u00ecnh. Qu\u00e1 tr\u00ecnh n\u00e0y s\u1ebd ti\u1ebft l\u1ed9 nh\u1eefng ph\u1ee9c t\u1ea1p \u1ea9n gi\u1ea5u v\u00e0 d\u1eabn b\u1ea1n \u0111\u1ebfn m\u1ed9t thi\u1ebft k\u1ebf v\u1eefng ch\u1eafc h\u01a1n. C\u00f4ng s\u1ee9c b\u1ecf ra cho s\u01a1 \u0111\u1ed3 s\u1ebd mang l\u1ea1i l\u1ee3i \u00edch l\u1edbn trong vi\u1ec7c duy tr\u00ec m\u00e3 ngu\u1ed3n.<\/p>\n<p>S\u1eed d\u1ee5ng b\u1ea3n \u0111\u1ed3 h\u00e0nh tr\u00ecnh n\u00e0y nh\u01b0 m\u1ed9t tham chi\u1ebfu. Tr\u1edf l\u1ea1i c\u00e1c ph\u1ea7n v\u1ec1 m\u1ed1i quan h\u1ec7 v\u00e0 t\u00ednh kh\u1ea3 ki\u1ebfn khi d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n ph\u00e1t tri\u1ec3n. C\u00e1c nguy\u00ean t\u1eafc t\u1ed5 ch\u1ee9c v\u1eabn gi\u1eef nguy\u00ean, d\u00f9 n\u1ec1n t\u1ea3ng c\u00f4ng ngh\u1ec7 c\u00f3 thay \u0111\u1ed5i. Gi\u1eef c\u00e1c g\u00f3i c\u1ee7a b\u1ea1n s\u1ea1ch s\u1ebd, c\u00e1c ph\u1ee5 thu\u1ed9c r\u00f5 r\u00e0ng v\u00e0 ki\u1ebfn tr\u00fac c\u1ee7a b\u1ea1n minh b\u1ea1ch.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m th\u01b0\u1eddng \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi quy ho\u1ea1ch \u0111\u00f4 th\u1ecb. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t th\u00e0nh ph\u1ed1 c\u1ea7n c\u00e1c khu v\u1ef1c, v\u00f9ng v\u00e0 \u0111\u01b0\u1eddng x\u00e1 \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng,&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1877,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"H\u01b0\u1edbng d\u1eabn S\u01a1 \u0111\u1ed3 G\u00f3i UML: B\u1ea3n \u0111\u1ed3 kh\u1edfi \u0111\u1ea7u cho ng\u01b0\u1eddi m\u1edbi & C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \ud83d\udce6","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch t\u1ea1o s\u01a1 \u0111\u1ed3 g\u00f3i UML. H\u01b0\u1edbng d\u1eabn ho\u00e0n ch\u1ec9nh cho ng\u01b0\u1eddi m\u1edbi v\u1ec1 c\u00fa ph\u00e1p, m\u1ed1i quan h\u1ec7 v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[79],"tags":[82,93],"class_list":["post-1876","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","tag-academic","tag-package-diagram"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>H\u01b0\u1edbng d\u1eabn S\u01a1 \u0111\u1ed3 G\u00f3i UML: B\u1ea3n \u0111\u1ed3 kh\u1edfi \u0111\u1ea7u cho ng\u01b0\u1eddi m\u1edbi &amp; C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \ud83d\udce6<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch t\u1ea1o s\u01a1 \u0111\u1ed3 g\u00f3i UML. 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