{"id":10402,"date":"2025-12-02T17:15:07","date_gmt":"2025-12-02T09:15:07","guid":{"rendered":"https:\/\/www.cybermedian.com\/vn\/uml-sequence-diagram-visualizing-time-and-interaction\/"},"modified":"2026-04-14T18:57:48","modified_gmt":"2026-04-14T10:57:48","slug":"uml-sequence-diagram-visualizing-time-and-interaction","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/vn\/uml-sequence-diagram-visualizing-time-and-interaction\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML: Tr\u1ef1c quan h\u00f3a th\u1eddi gian v\u00e0 t\u01b0\u01a1ng t\u00e1c"},"content":{"rendered":"<p>S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u1ec3 hi\u1ec3u h\u00e0nh vi \u0111\u1ed9ng c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 m\u00f4 h\u00ecnh h\u00f3a c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau v\u00e0 th\u1ee9 t\u1ef1 m\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y x\u1ea3y ra, nh\u1ea5n m\u1ea1nh v\u00e0o<strong>d\u00f2ng ch\u1ea3y \u0111\u01b0\u1ee3c s\u1eafp th\u1ee9 t\u1ef1 theo th\u1eddi gian c\u1ee7a c\u00e1c tin nh\u1eafn<\/strong>. N\u00f3 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, t\u00e0i li\u1ec7u h\u00f3a c\u00e1c l\u1eddi g\u1ecdi API v\u00e0 theo d\u00f5i c\u00e1c lu\u1ed3ng giao d\u1ecbch ph\u1ee9c t\u1ea1p.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd d\u1eabn b\u1ea1n qua c\u00e1c y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n v\u00e0 c\u00e1c k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1.<\/p>\n<h2>C\u1ea5u tr\u00fac c\u1ed1t l\u00f5i v\u00e0 m\u1ee5c \u0111\u00edch<\/h2>\n<p>M\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c theo hai tr\u1ee5c:<\/p>\n<ol>\n<li><strong>Tr\u1ee5c ngang:<\/strong>Hi\u1ec3n th\u1ecb c\u00e1c th\u00e0nh ph\u1ea7n tham gia<strong>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong> (ho\u1eb7c c\u00e1c t\u00e1c nh\u00e2n, l\u1edbp v\u00e0 th\u00e0nh ph\u1ea7n).<\/li>\n<li><strong>Tr\u1ee5c d\u1ecdc (tr\u1ee5c th\u1eddi gian):<\/strong>Bi\u1ec3u di\u1ec5n d\u00f2ng ch\u1ea3y c\u1ee7a th\u1eddi gian, di chuy\u1ec3n xu\u1ed1ng d\u01b0\u1edbi. C\u00e1c tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi \u1edf ph\u00eda d\u01b0\u1edbi s\u01a1 \u0111\u1ed3 x\u1ea3y ra mu\u1ed9n h\u01a1n trong chu\u1ed7i.<\/li>\n<\/ol>\n<p><img alt=\"Axis-of-sequence-diagram\" class=\"alignnone size-full wp-image-14258\" decoding=\"async\" height=\"597\" loading=\"lazy\" sizes=\"auto, (max-width: 593px) 100vw, 593px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/Axis-of-sequence-diagram-v2.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/Axis-of-sequence-diagram-v2.png 593w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/Axis-of-sequence-diagram-v2-298x300.png 298w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/Axis-of-sequence-diagram-v2-150x150.png 150w\" width=\"593\"\/><\/p>\n<p>M\u1ee5c \u0111\u00edch l\u00e0 \u0111\u1ec3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi:<strong>\u201cTrong t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3 n\u00e0y (tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng), c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0y trao \u0111\u1ed5i th\u00f4ng tin theo th\u1ee9 t\u1ef1 n\u00e0o \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 mong mu\u1ed1n?\u201d<\/strong><\/p>\n<h2>C\u00e1c y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1<\/h2>\n<p>\u0110\u1ec3 m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t chu\u1ed7i, b\u1ea1n c\u1ea7n ba y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i: c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng, tin nh\u1eafn v\u00e0 thanh k\u00edch ho\u1ea1t.<\/p>\n<h3>A. \u0110\u01b0\u1eddng s\u1ed1ng (C\u00e1c th\u00e0nh ph\u1ea7n tham gia)<\/h3>\n<p>M\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng bi\u1ec3u di\u1ec5n m\u1ed9t th\u00e0nh ph\u1ea7n duy nh\u1ea5t\u2014m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng, th\u1ec3 hi\u1ec7n ho\u1eb7c l\u1edbp\u2014trong t\u01b0\u01a1ng t\u00e1c.<\/p>\n<ul>\n<li><strong>K\u00fd hi\u1ec7u:<\/strong>M\u1ed9t h\u1ed9p h\u00ecnh ch\u1eef nh\u1eadt \u1edf \u0111\u1ea7u s\u01a1 \u0111\u1ed3 ch\u1ee9a t\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng, v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n d\u1ecdc k\u00e9o d\u00e0i xu\u1ed1ng d\u01b0\u1edbi.<\/li>\n<li><strong>Ng\u1eef ph\u00e1p:<\/strong>\n<ul>\n<li><code>T\u00eanTh\u00e0nhPh\u1ea7n<\/code> (n\u1ebfu \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 m\u1ed9t th\u1ec3 hi\u1ec7n, v\u00ed d\u1ee5 nh\u01b0<code>ng\u01b0\u1eddi d\u00f9ng<\/code>)<\/li>\n<li><code>T\u00eanTh\u1ec3Hi\u1ec7n: T\u00eanL\u1edbp<\/code> (v\u00ed d\u1ee5 nh\u01b0<code>authService: AuthenticationService<\/code>)<\/li>\n<\/ul>\n<\/li>\n<li><strong>M\u1ee5c \u0111\u00edch:<\/strong>\u0110\u01b0\u1eddng n\u00e9t \u0111\u1ee9t ch\u1ec9 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a ng\u01b0\u1eddi tham gia theo th\u1eddi gian trong ph\u1ea1m vi c\u1ee7a chu\u1ed7i.<\/li>\n<\/ul>\n<p><img alt=\"lifeline\" class=\"alignnone size-full wp-image-14259\" decoding=\"async\" height=\"554\" loading=\"lazy\" sizes=\"auto, (max-width: 772px) 100vw, 772px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/lifeline.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/lifeline.png 772w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/lifeline-300x215.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/lifeline-768x551.png 768w\" width=\"772\"\/><\/p>\n<h3>B. Tin nh\u1eafn (T\u01b0\u01a1ng t\u00e1c)<\/h3>\n<p>C\u00e1c tin nh\u1eafn l\u00e0 c\u00e1c m\u0169i t\u00ean ngang \u0111\u01b0\u1ee3c v\u1ebd gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi. Ch\u00fang \u0111\u1ea1i di\u1ec7n cho s\u1ef1 giao ti\u1ebfp gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1eddi g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c, t\u00edn hi\u1ec7u ho\u1eb7c y\u00eau c\u1ea7u API.<\/p>\n<p><img alt=\"Messages-(Interaction)\" class=\"alignnone size-full wp-image-14260\" decoding=\"async\" height=\"676\" loading=\"lazy\" sizes=\"auto, (max-width: 764px) 100vw, 764px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/Messages-Interaction.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/Messages-Interaction.png 764w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/Messages-Interaction-300x265.png 300w\" width=\"764\"\/><\/p>\n<h4>C\u00e1c lo\u1ea1i tin nh\u1eafn:<\/h4>\n<table>\n<tbody>\n<tr>\n<th>Lo\u1ea1i tin nh\u1eafn<\/th>\n<th>K\u00fd hi\u1ec7u<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<\/tr>\n<tr>\n<td><strong>L\u1eddi g\u1ecdi \u0111\u1ed3ng b\u1ed9<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng li\u1ec1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean \u0111\u1ea7y<\/td>\n<td>Ng\u01b0\u1eddi g\u1eedi ch\u1edd ph\u1ea3n h\u1ed3i tr\u01b0\u1edbc khi ti\u1ebfp t\u1ee5c. \u0110i\u1ec1u n\u00e0y kh\u1edfi t\u1ea1o m\u1ed9t<strong>Thanh k\u00edch ho\u1ea1t<\/strong>tr\u00ean \u0111\u01b0\u1eddng \u0111\u1eddi c\u1ee7a ng\u01b0\u1eddi nh\u1eadn.<\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u1ea3n h\u1ed3i\/Trao tr\u1ea3<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng n\u00e9t \u0111\u1ee9t v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf<\/td>\n<td>Ph\u1ea3n h\u1ed3i cho m\u1ed9t l\u1eddi g\u1ecdi \u0111\u1ed3ng b\u1ed9, cho th\u1ea5y vi\u1ec7c tr\u1ea3 l\u1ea1i quy\u1ec1n ki\u1ec3m so\u00e1t cho ng\u01b0\u1eddi g\u1eedi. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u00f3ng thanh k\u00edch ho\u1ea1t.<\/td>\n<\/tr>\n<tr>\n<td><strong>Tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng li\u1ec1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf<\/td>\n<td>Ng\u01b0\u1eddi g\u1eedi kh\u00f4ng ch\u1edd ph\u1ea3n h\u1ed3i v\u00e0 ti\u1ebfp t\u1ee5c th\u1ef1c thi c\u1ee7a ch\u00ednh m\u00ecnh ngay l\u1eadp t\u1ee9c. Th\u01b0\u1eddng g\u1eb7p trong c\u00e1c ki\u1ebfn tr\u00fac d\u1ef1a tr\u00ean s\u1ef1 ki\u1ec7n.<\/td>\n<\/tr>\n<tr>\n<td><strong>L\u1eddi g\u1ecdi t\u1ef1 th\u00e2n<\/strong><\/td>\n<td>M\u0169i t\u00ean quay l\u1ea1i \u0111\u01b0\u1eddng \u0111\u1eddi c\u00f9ng m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng<\/td>\n<td>M\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng g\u1ecdi m\u1ed9t trong c\u00e1c ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a ch\u00ednh n\u00f3.<\/td>\n<\/tr>\n<tr>\n<td><strong>Tin nh\u1eafn ph\u00e1t hi\u1ec7n<\/strong><\/td>\n<td>M\u0169i t\u00ean b\u1eaft \u0111\u1ea7u t\u1eeb m\u1ed9t \u0111i\u1ec3m cu\u1ed1i v\u00e0 ch\u1ea1m v\u00e0o m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1eddi<\/td>\n<td>Ng\u01b0\u1eddi g\u1eedi tin nh\u1eafn l\u00e0 kh\u00f4ng r\u00f5 ho\u1eb7c n\u1eb1m ngo\u00e0i ph\u1ea1m vi bi\u1ec3u \u0111\u1ed3 (v\u00ed d\u1ee5: m\u1ed9t s\u1ef1 k\u00edch ho\u1ea1t b\u00ean ngo\u00e0i).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>C. Thanh k\u00edch ho\u1ea1t (M\u00f4 t\u1ea3 th\u1ef1c thi)<\/h3>\n<p>Thanh k\u00edch ho\u1ea1t (c\u00f2n g\u1ecdi l\u00e0 \u0111i\u1ec3m t\u1eadp trung ki\u1ec3m so\u00e1t) l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt d\u1ecdc m\u1ecfng \u0111\u01b0\u1ee3c v\u1ebd tr\u00ean \u0111\u1ec9nh c\u1ee7a m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1eddi.<\/p>\n<ul>\n<li><strong>K\u00fd hi\u1ec7u:<\/strong>M\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt d\u1ecdc li\u1ec1n tr\u00ean \u0111\u01b0\u1eddng \u0111\u1eddi.<\/li>\n<li><strong>M\u1ee5c \u0111\u00edch:<\/strong> N\u00f3 ch\u1ec9 kho\u1ea3ng th\u1eddi gian m\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u0111ang th\u1ef1c hi\u1ec7n m\u1ed9t thao t\u00e1c m\u1ed9t c\u00e1ch t\u00edch c\u1ef1c (t\u1ee9c l\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a n\u00f3 \u0111ang ch\u1ea1y) ho\u1eb7c \u0111ang ch\u1edd ph\u1ea3n h\u1ed3i \u0111\u1ed3ng b\u1ed9. Kho\u1ea3ng th\u1eddi gian n\u00e0y b\u1eaft \u0111\u1ea7u khi nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 v\u00e0 k\u1ebft th\u00fac khi g\u1eedi tin nh\u1eafn ph\u1ea3n h\u1ed3i.<\/li>\n<\/ul>\n<h2>M\u00f4 h\u00ecnh h\u00f3a logic v\u00e0 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n<\/h2>\n<p>\u0110\u1ec3 m\u00f4 h\u00ecnh h\u00f3a logic kinh doanh ph\u1ee9c t\u1ea1p, b\u1ea1n s\u1eed d\u1ee5ng c\u00e1c \u0111o\u1ea1n (ho\u1eb7c khung) \u0111\u1ec3 bao quanh c\u00e1c ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3.<\/p>\n<h3>A. C\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p<\/h3>\n<p>C\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p cho ph\u00e9p b\u1ea1n m\u00f4 h\u00ecnh h\u00f3a logic \u0111i\u1ec1u ki\u1ec7n, l\u1eb7p l\u1ea1i v\u00e0 c\u00e1c b\u01b0\u1edbc t\u00f9y ch\u1ecdn. C\u00e1c \u0111o\u1ea1n ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:<\/p>\n<ol>\n<li><strong>Thay th\u1ebf (alt):<\/strong>D\u00f9ng \u0111\u1ec3<strong>if-else<\/strong> logic. \u0110o\u1ea1n \u0111\u01b0\u1ee3c chia b\u1edfi m\u1ed9t \u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t, v\u00e0 m\u1ed7i ph\u1ea7n bao g\u1ed3m m\u1ed9t \u0111i\u1ec1u ki\u1ec7n (m\u1ed9t \u201cb\u1ea3o v\u1ec7\u201d) trong d\u1ea5u ngo\u1eb7c vu\u00f4ng. Ch\u1ec9 c\u00f3 m\u1ed9t con \u0111\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ecdn.\n<ul>\n<li><em>V\u00ed d\u1ee5:<\/em> <code>[n\u1ebfu th\u00f4ng tin x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng h\u1ee3p l\u1ec7]<\/code> v\u00e0 <code>[ng\u01b0\u1ee3c l\u1ea1i \/ th\u00f4ng tin x\u00e1c th\u1ef1c kh\u00f4ng h\u1ee3p l\u1ec7]<\/code>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>T\u00f9y ch\u1ecdn (opt):<\/strong>D\u00f9ng \u0111\u1ec3<strong>if<\/strong>c\u00e2u l\u1ec7nh. T\u01b0\u01a1ng t\u00e1c b\u00ean trong \u0111o\u1ea1n l\u00e0 t\u00f9y ch\u1ecdn v\u00e0 ch\u1ec9 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n n\u1ebfu \u0111i\u1ec1u ki\u1ec7n (b\u1ea3o v\u1ec7) l\u00e0 \u0111\u00fang.\n<ul>\n<li><em>V\u00ed d\u1ee5:<\/em> <code>[n\u1ebfu ng\u01b0\u1eddi d\u00f9ng c\u00f3 m\u1eb7t h\u00e0ng trong gi\u1ecf h\u00e0ng]<\/code>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>V\u00f2ng l\u1eb7p (loop):<\/strong>D\u00f9ng \u0111\u1ec3 l\u1eb7p l\u1ea1i. B\u1ea3o v\u1ec7 x\u00e1c \u0111\u1ecbnh \u0111i\u1ec1u ki\u1ec7n l\u1eb7p l\u1ea1i (v\u00ed d\u1ee5 nh\u01b0 <code>[v\u1edbi m\u1ed7i m\u1eb7t h\u00e0ng]<\/code> ho\u1eb7c <code>[trong khi (s\u1ed1 l\u1ea7n th\u1eed &lt; 3)]<\/code>).<\/li>\n<li><strong>Tham chi\u1ebfu (ref):<\/strong>D\u00f9ng \u0111\u1ec3 l\u00e0m cho s\u01a1 \u0111\u1ed3 c\u00f3 c\u1ea5u tr\u00fac h\u01a1n b\u1eb1ng c\u00e1ch tham chi\u1ebfu \u0111\u1ebfn m\u1ed9t chu\u1ed7i t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong m\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 kh\u00e1c ri\u00eang bi\u1ec7t. \u0110i\u1ec1u n\u00e0y gi\u00fap tr\u00e1nh l\u00e0m s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean qu\u00e1 r\u1ed1i r\u1eafm.<\/li>\n<li><strong>Quan tr\u1ecdng (crit):<\/strong> \u0110\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ec9 m\u1ed9t ph\u1ea7n kh\u00f4ng \u0111\u01b0\u1ee3c ng\u1eaft qu\u00e3ng, th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c qu\u00e1 tr\u00ecnh \u0111\u1ed3ng th\u1eddi.<\/li>\n<\/ol>\n<h2>V\u00ed d\u1ee5 minh h\u1ecda m\u00f4 h\u00ecnh h\u00f3a t\u1eebng b\u01b0\u1edbc<\/h2>\n<p>H\u00e3y m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t phi\u00ean b\u1ea3n \u0111\u01a1n gi\u1ea3n h\u00f3a<strong>Quy tr\u00ecnh thanh to\u00e1n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/strong> s\u1eed d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n<table>\n<tbody>\n<tr>\n<th>B\u01b0\u1edbc<\/th>\n<th>H\u00e0nh \u0111\u1ed9ng<\/th>\n<th>Lo\u1ea1i tin nh\u1eafn<\/th>\n<\/tr>\n<tr>\n<td>1.<\/td>\n<td>Ng\u01b0\u1eddi d\u00f9ng nh\u1ea5p v\u00e0o \u201cThanh to\u00e1n.\u201d<\/td>\n<td>G\u1ecdi \u0111\u1ed3ng b\u1ed9<\/td>\n<\/tr>\n<tr>\n<td>2.<\/td>\n<td>Frontend x\u00e1c th\u1ef1c gi\u1ecf h\u00e0ng.<\/td>\n<td>G\u1ecdi t\u1ef1 th\u00e2n (tr\u00ean Frontend)<\/td>\n<\/tr>\n<tr>\n<td>3.<\/td>\n<td>Frontend y\u00eau c\u1ea7u x\u1eed l\u00fd thanh to\u00e1n.<\/td>\n<td>G\u1ecdi \u0111\u1ed3ng b\u1ed9<\/td>\n<\/tr>\n<tr>\n<td>4.<\/td>\n<td>C\u1ed5ng thanh to\u00e1n ki\u1ec3m tra s\u1ed1 d\u01b0.<\/td>\n<td>G\u1ecdi \u0111\u1ed3ng b\u1ed9<\/td>\n<\/tr>\n<tr>\n<td>5.<\/td>\n<td>C\u1ed5ng thanh to\u00e1n tr\u1ea3 v\u1ec1 \u201cTh\u00e0nh c\u00f4ng.\u201d<\/td>\n<td>Tin nh\u1eafn tr\u1ea3 v\u1ec1<\/td>\n<\/tr>\n<tr>\n<td>6.<\/td>\n<td>Frontend g\u1eedi m\u1ed9t tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 \u0111\u1ebfn d\u1ecbch v\u1ee5 Kho \u0111\u1ec3 gi\u1ea3m t\u1ed3n kho.<\/td>\n<td>Tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9<\/td>\n<\/tr>\n<tr>\n<td>7.<\/td>\n<td>Frontend g\u1eedi m\u1ed9t tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 \u0111\u1ebfn d\u1ecbch v\u1ee5 \u0110\u01a1n h\u00e0ng \u0111\u1ec3 ho\u00e0n t\u1ea5t \u0111\u01a1n h\u00e0ng.<\/td>\n<td>G\u1ecdi \u0111\u1ed3ng b\u1ed9<\/td>\n<\/tr>\n<tr>\n<td>8.<\/td>\n<td>D\u1ecbch v\u1ee5 \u0110\u1eb7t h\u00e0ng tr\u1ea3 v\u1ec1 \u201cM\u00e3 \u0111\u01a1n h\u00e0ng.\u201d<\/td>\n<td>Tin nh\u1eafn tr\u1ea3 v\u1ec1<\/td>\n<\/tr>\n<tr>\n<td>9.<\/td>\n<td>Frontend hi\u1ec3n th\u1ecb trang x\u00e1c nh\u1eadn.<\/td>\n<td>Tin nh\u1eafn tr\u1ea3 v\u1ec1 (\u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>M\u00f4 h\u00ecnh h\u00f3a logic (\u0111o\u1ea1n kh\u00e1c)<\/h3>\n<p>\u0110\u1ec3 x\u1eed l\u00fd l\u1ed7i, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng m\u1ed9t<strong>\u0110o\u1ea1n kh\u00e1c<\/strong>\u0111o\u1ea1n:<\/p>\n<ol>\n<li>\u0110\u1eb7t<strong>Ki\u1ec3m tra C\u1ed5ng thanh to\u00e1n<\/strong> (B\u01b0\u1edbc 4 &amp; 5) b\u00ean trong m\u1ed9t<code>alt<\/code>\u0111o\u1ea1n.<\/li>\n<li>Ph\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi<code>[Th\u00e0nh c\u00f4ng]<\/code>. Ph\u1ea7n n\u00e0y bao g\u1ed3m c\u00e1c b\u01b0\u1edbc 6, 7, 8 v\u00e0 9.<\/li>\n<li>Ph\u1ea7n th\u1ee9 hai, \u0111\u01b0\u1ee3c chia b\u1edfi \u0111\u01b0\u1eddng k\u1ebb \u0111\u1ee9t \u0111o\u1ea1n, \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi<code>[Th\u1ea5t b\u1ea1i]<\/code>. Ph\u1ea7n n\u00e0y bao g\u1ed3m m\u1ed9t tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 m\u1edbi:<code>paymentService -&gt; frontend: tr\u1ea3 v\u1ec1 \"Thanh to\u00e1n th\u1ea5t b\u1ea1i\"<\/code>v\u00e0 Frontend hi\u1ec3n th\u1ecb trang l\u1ed7i.<\/li>\n<\/ol>\n<h2>T\u00f3m t\u1eaft c\u00e1c nguy\u00ean t\u1eafc t\u1ed1t nh\u1ea5t cho s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1<\/h2>\n<ul>\n<li><strong>Gi\u1eef t\u1eadp trung:<\/strong>M\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 duy nh\u1ea5t th\u01b0\u1eddng n\u00ean m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng duy nh\u1ea5t ho\u1eb7c m\u1ed9t thao t\u00e1c nguy\u00ean t\u1eed duy nh\u1ea5t (v\u00ed d\u1ee5: \u201c\u0110\u0103ng nh\u1eadp\u201d, \u201cTh\u00eam s\u1ea3n ph\u1ea9m v\u00e0o gi\u1ecf h\u00e0ng\u201d). S\u1eed d\u1ee5ng<strong>C\u00e1c \u0111o\u1ea1n tham chi\u1ebfu<\/strong>cho c\u00e1c quy tr\u00ecnh con.<\/li>\n<li><strong>\u0110\u00e1nh nh\u00e3n tin nh\u1eafn r\u00f5 r\u00e0ng:<\/strong>S\u1eed d\u1ee5ng c\u1ee5m \u0111\u1ed9ng t\u1eeb cho tin nh\u1eafn, ph\u1ea3n \u00e1nh t\u00ean ph\u01b0\u01a1ng th\u1ee9c ho\u1eb7c \u0111i\u1ec3m cu\u1ed1i API (v\u00ed d\u1ee5:<code>processPayment(amount, token)<\/code>).<\/li>\n<li><strong>X\u00e1c \u0111\u1ecbnh c\u00e1c b\u00ean tham gia m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c:<\/strong> Ph\u00e2n bi\u1ec7t gi\u1eefa <strong>Ng\u01b0\u1eddi d\u00f9ng<\/strong> (th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i) v\u00e0 <strong>\u0110\u1ed1i t\u01b0\u1ee3ng<\/strong> (th\u00e0nh ph\u1ea7n ho\u1eb7c th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng b\u00ean trong).<\/li>\n<li><strong>Th\u1eddi gian ch\u1ea3y t\u1eeb tr\u00ean xu\u1ed1ng:<\/strong> \u0110\u1ea3m b\u1ea3o c\u00e1c tin nh\u1eafn \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp nh\u1ea5t qu\u00e1n t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi.<\/li>\n<li><strong>S\u1eed d\u1ee5ng c\u00e1c \u0111o\u1ea1n \u0111\u1ec3 ki\u1ec3m so\u00e1t:<\/strong> Tr\u00e1nh v\u1ebd c\u00e1c n\u00fat quy\u1ebft \u0111\u1ecbnh ph\u1ee9c t\u1ea1p ho\u1eb7c v\u00f2ng l\u1eb7p b\u00ean trong ch\u00ednh lu\u1ed3ng tin nh\u1eafn; s\u1eed d\u1ee5ng <code>alt<\/code>, <code>opt<\/code>, v\u00e0 <code>loop<\/code> c\u00e1c \u0111o\u1ea1n.<\/li>\n<\/ul>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft v\u1ec1 UML v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p tr\u1ef1c quan h\u00f3a \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi AI, h\u00e3y truy c\u1eadp trung t\u00e2m t\u00e0i nguy\u00ean UML c\u1ee7a ch\u00fang t\u00f4i<a href=\"https:\/\/www.cybermedian.com\/the-definitive-guide-to-the-unified-modeling-language-uml\/\">trung t\u00e2m t\u00e0i nguy\u00ean UML<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u1ec3 hi\u1ec3u h\u00e0nh vi \u0111\u1ed9ng c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng.<\/p>\n","protected":false},"author":5,"featured_media":10403,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"N\u1eafm v\u1eefng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML \u0111\u1ec3 tr\u1ef1c quan h\u00f3a t\u01b0\u01a1ng t\u00e1c theo th\u1ee9 t\u1ef1 th\u1eddi gian. T\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi, tin nh\u1eafn (\u0111\u1ed3ng b\u1ed9\/b\u1ea5t \u0111\u1ed3ng b\u1ed9), thanh k\u00edch ho\u1ea1t v\u00e0 c\u00e1c \u0111o\u1ea1n lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n (alt, loop).","_yoast_wpseo_metadesc":"Master the UML Sequence Diagram to visualize time-ordered interaction. Learn about lifelines, messages (synchronous\/asynchronous), activation bars, and control flow fragments (alt, loop).","footnotes":""},"categories":[3],"tags":[],"class_list":["post-10402","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>N\u1eafm v\u1eefng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML \u0111\u1ec3 tr\u1ef1c quan h\u00f3a t\u01b0\u01a1ng t\u00e1c theo th\u1ee9 t\u1ef1 th\u1eddi gian. 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