{"id":542,"date":"2026-04-08T06:12:48","date_gmt":"2026-04-08T06:12:48","guid":{"rendered":"https:\/\/www.viz-tools.com\/vi\/uml-timing-diagrams-guide-temporal-modeling\/"},"modified":"2026-04-08T06:12:48","modified_gmt":"2026-04-08T06:12:48","slug":"uml-timing-diagrams-guide-temporal-modeling","status":"publish","type":"post","link":"https:\/\/www.viz-tools.com\/vi\/uml-timing-diagrams-guide-temporal-modeling\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML: Chinh ph\u1ee5c ngh\u1ec7 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a h\u1ec7 th\u1ed1ng theo th\u1eddi gian"},"content":{"rendered":"

Hi\u1ec3u r\u00f5 lu\u1ed3ng th\u1eddi gian b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng l\u00e0 \u0111i\u1ec1u then ch\u1ed1t \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf c\u00e1c \u1ee9ng d\u1ee5ng th\u1eddi gian th\u1ef1c, thi\u1ebft b\u1ecb nh\u00fang ho\u1eb7c c\u00e1c giao th\u1ee9c truy\u1ec1n th\u00f4ng ph\u1ee9c t\u1ea1p. Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p nhi\u1ec1u c\u00f4ng c\u1ee5 tr\u1ef1c quan h\u00f3a, nh\u01b0ng \u00edt s\u01a1 \u0111\u1ed3 n\u00e0o m\u00f4 t\u1ea3 kh\u00eda c\u1ea1nh th\u1eddi gian m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c nh\u01b0 S\u01a1 \u0111\u1ed3 Th\u1eddi gian. T\u00e0i li\u1ec7u n\u00e0y t\u1eadp trung v\u00e0o tr\u1ea1ng th\u00e1i c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng theo m\u1ed9t khung th\u1eddi gian c\u1ee5 th\u1ec3, mang l\u1ea1i c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c m\u00e0 c\u00e1c s\u01a1 \u0111\u1ed3 kh\u00e1c c\u00f3 th\u1ec3 l\u00e0m m\u1edd.<\/p>\n

Khi thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng m\u00e0 t\u1eebng mili gi\u00e2y \u0111\u1ec1u quan tr\u1ecdng, S\u01a1 \u0111\u1ed3 Th\u1eddi gian tr\u1edf th\u00e0nh b\u1ea3n v\u1ebd thi\u1ebft y\u1ebfu. N\u00f3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c c\u00e1c th\u1eddi \u0111i\u1ec3m khi t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi, nh\u1eadn ho\u1eb7c x\u1eed l\u00fd. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u1ea5u tr\u00fac, c\u00fa ph\u00e1p v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a n\u00e0y, \u0111\u1ea3m b\u1ea3o s\u1ef1 r\u00f5 r\u00e0ng trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 ph\u1ea7n m\u1ec1m c\u1ee5 th\u1ec3.<\/p>\n

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\"Child-friendly<\/figure>\n<\/div>\n

S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML l\u00e0 g\u00ec? \u23f1\ufe0f<\/h2>\n

S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML l\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 h\u00e0nh vi d\u00f9ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng theo th\u1eddi gian. Kh\u00e1c v\u1edbi S\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1, v\u1ed1n nh\u1ea5n m\u1ea1nh th\u1ee9 t\u1ef1 c\u1ee7a c\u00e1c tin nh\u1eafn, S\u01a1 \u0111\u1ed3 Th\u1eddi gian nh\u1ea5n m\u1ea1nh v\u00e0o c\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 th\u1eddi gian li\u00ean quan \u0111\u1ebfn ch\u00fang. Tr\u1ee5c ngang bi\u1ec3u di\u1ec5n th\u1eddi gian ti\u1ebfn t\u1eeb tr\u00e1i sang ph\u1ea3i, trong khi tr\u1ee5c d\u1ecdc li\u1ec7t k\u00ea c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c l\u1edbp tham gia v\u00e0o t\u01b0\u01a1ng t\u00e1c.<\/p>\n

Lo\u1ea1i s\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho:<\/p>\n

    \n
  • H\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c:<\/strong>N\u01a1i m\u00e0 c\u00e1c h\u1ea1n ch\u00f3t nghi\u00eam ng\u1eb7t ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng.<\/li>\n
  • \u0110i\u1ec1u khi\u1ec3n nh\u00fang:<\/strong>Hi\u1ec3n th\u1ecb c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ea7n c\u1ee9ng ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c t\u00edn hi\u1ec7u ph\u1ea7n m\u1ec1m.<\/li>\n
  • \u0110\u1ed3ng th\u1eddi:<\/strong>Tr\u1ef1c quan h\u00f3a c\u00e1c qu\u00e1 tr\u00ecnh song song v\u00e0 c\u00e1c \u0111i\u1ec3m \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u1ee7a ch\u00fang.<\/li>\n
  • S\u1eed d\u1ee5ng t\u00e0i nguy\u00ean:<\/strong>Theo d\u00f5i th\u1eddi gian m\u1ed9t t\u00e0i nguy\u00ean b\u1ecb chi\u1ebfm d\u1ee5ng.<\/li>\n<\/ul>\n

    C\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i v\u00e0 c\u00fa ph\u00e1p \ud83d\udee0\ufe0f<\/h2>\n

    \u0110\u1ec3 t\u1ea1o ra m\u1ed9t m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c, ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i hi\u1ec3u r\u00f5 c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng c\u01a1 b\u1ea3n. Ng\u00f4n ng\u1eef tr\u1ef1c quan t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n nh\u01b0ng mang \u00fd ngh\u0129a ng\u1eef ngh\u0129a c\u1ee5 th\u1ec3.<\/p>\n

    1. \u0110\u01b0\u1eddng s\u1ed1ng \ud83d\udccf<\/h3>\n

    C\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng bi\u1ec3u di\u1ec5n c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u1ec3 hi\u1ec7n tham gia. Ch\u00fang xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng c\u00e1c c\u1ed9t th\u1eb3ng \u0111\u1ee9ng k\u00e9o d\u00e0i xu\u1ed1ng d\u01b0\u1edbi. M\u1ed7i \u0111\u01b0\u1eddng s\u1ed1ng c\u00f3 m\u1ed9t ti\u00eau \u0111\u1ec1 ch\u1ee9a t\u00ean v\u00e0 lo\u1ea1i \u0111\u1ed1i t\u01b0\u1ee3ng. Ph\u1ea7n tr\u00ean c\u1ee7a \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u00e1nh d\u1ea5u th\u1eddi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u c\u1ee7a kho\u1ea3ng quan s\u00e1t.<\/p>\n

    2. H\u1ed9p tr\u1ea1ng th\u00e1i (K\u00ednh tr\u1ea1ng th\u00e1i) \ud83d\udfe6<\/h3>\n

    C\u00e1c h\u1ed9p tr\u1ea1ng th\u00e1i cho bi\u1ebft tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3. Ch\u00fang l\u00e0 c\u00e1c kh\u1ed1i h\u00ecnh ch\u1eef nh\u1eadt \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean \u0111\u01b0\u1eddng s\u1ed1ng. M\u00e0u s\u1eafc ho\u1eb7c nh\u00e3n b\u00ean trong h\u1ed9p m\u00f4 t\u1ea3 tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i (v\u00ed d\u1ee5 nh\u01b0 \u0110ang ho\u1ea1t \u0111\u1ed9ng<\/em>, \u0110ang ch\u1edd<\/em>, \u0110ang x\u1eed l\u00fd<\/em>). C\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng chuy\u1ec3n ti\u1ebfp gi\u1eefa c\u00e1c h\u1ed9p n\u00e0y.<\/p>\n

    3. Tr\u1ee5c th\u1eddi gian \u23f0<\/h3>\n

    Th\u1eddi gian ch\u1ea3y theo chi\u1ec1u ngang. C\u00e1c v\u1ea1ch l\u1edbn th\u01b0\u1eddng bi\u1ec3u di\u1ec5n c\u00e1c \u0111\u01a1n v\u1ecb c\u1ee5 th\u1ec3 (gi\u00e2y, mili gi\u00e2y, chu k\u1ef3). R\u1ea5t quan tr\u1ecdng khi ghi nh\u00e3n tr\u1ee5c n\u00e0y m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u1eddi l\u01b0\u1ee3ng c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n kh\u00f4ng b\u1ecb hi\u1ec3u nh\u1ea7m.<\/p>\n

    4. R\u00e0ng bu\u1ed9c th\u1eddi gian \u23f3<\/h3>\n

    C\u00e1c r\u00e0ng bu\u1ed9c x\u00e1c \u0111\u1ecbnh c\u00e1c kho\u1ea3ng th\u1eddi gian cho ph\u00e9p cho c\u00e1c s\u1ef1 ki\u1ec7n. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng d\u1ea5u ngo\u1eb7c ho\u1eb7c ch\u00fa th\u00edch ph\u00eda tr\u00ean ph\u1ea7n li\u00ean quan c\u1ee7a \u0111\u01b0\u1eddng s\u1ed1ng. V\u00ed d\u1ee5, m\u1ed9t r\u00e0ng bu\u1ed9c c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh r\u1eb1ng ph\u1ea3n h\u1ed3i ph\u1ea3i x\u1ea3y ra trong v\u00f2ng 50 mili gi\u00e2y k\u1ec3 t\u1eeb khi y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c g\u1eedi.<\/p>\n

    \u0110\u1ecdc v\u00e0 Hi\u1ec3u s\u01a1 \u0111\u1ed3 \ud83d\udc41\ufe0f<\/h2>\n

    Vi\u1ec7c \u0111\u1ecdc s\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u00f2i h\u1ecfi ph\u1ea3i qu\u00e9t t\u1eeb tr\u00e1i sang ph\u1ea3i. B\u1ea1n theo d\u00f5i tr\u1ee5c th\u1eddi gian ngang \u0111\u1ec3 th\u1ea5y c\u00e1ch c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi d\u1ecdc thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i t\u01b0\u01a1ng \u0111\u1ed1i v\u1edbi nhau.<\/p>\n

    C\u00e1c m\u1eabu \u0111\u1ecdc ch\u00ednh<\/h3>\n
      \n
    • Th\u1eddi l\u01b0\u1ee3ng:<\/strong>H\u00e3y nh\u00ecn v\u00e0o \u0111\u1ed9 r\u1ed9ng c\u1ee7a c\u00e1c h\u1ed9p tr\u1ea1ng th\u00e1i. M\u1ed9t h\u1ed9p r\u1ed9ng cho th\u1ea5y th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng d\u00e0i.<\/li>\n
    • Tr\u00f9ng l\u1eb7p:<\/strong>Khi c\u00e1c h\u1ed9p t\u1eeb c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi kh\u00e1c nhau tr\u00f9ng l\u1eb7p theo chi\u1ec1u ngang, \u0111i\u1ec1u \u0111\u00f3 cho th\u1ea5y vi\u1ec7c th\u1ef1c thi \u0111\u1ed3ng th\u1eddi.<\/li>\n
    • Chuy\u1ec3n ti\u1ebfp:<\/strong>C\u00e1c bi\u00ean gi\u1edbi gi\u1eefa c\u00e1c h\u1ed9p tr\u1ea1ng th\u00e1i \u0111\u1ea1i di\u1ec7n cho kho\u1ea3nh kh\u1eafc m\u1ed9t s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i.<\/li>\n
    • Kho\u1ea3ng tr\u1ed1ng:<\/strong>Kho\u1ea3ng tr\u1ed1ng tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1eddi cho th\u1ea5y tr\u1ea1ng th\u00e1i kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c \u0111ang ch\u1edd.<\/li>\n<\/ul>\n

      S\u01a1 \u0111\u1ed3 th\u1eddi gian so v\u1edbi s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \u2694\ufe0f<\/h2>\n

      S\u1ef1 nh\u1ea7m l\u1eabn th\u01b0\u1eddng x\u1ea3y ra gi\u1eefa s\u01a1 \u0111\u1ed3 th\u1eddi gian v\u00e0 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u m\u00f4 h\u00ecnh h\u00f3a t\u01b0\u01a1ng t\u00e1c, nh\u01b0ng tr\u1ecdng t\u00e2m c\u1ee7a ch\u00fang kh\u00e1c nhau \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n\n\n\n\n\n\n
      T\u00ednh n\u0103ng<\/th>\nS\u01a1 \u0111\u1ed3 th\u1eddi gian<\/th>\nS\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1<\/th>\n<\/tr>\n<\/thead>\n
      Tr\u1ecdng t\u00e2m ch\u00ednh<\/strong><\/td>\nTh\u1eddi gian v\u00e0 Th\u1eddi l\u01b0\u1ee3ng tr\u1ea1ng th\u00e1i<\/td>\nTh\u1ee9 t\u1ef1 c\u1ee7a c\u00e1c tin nh\u1eafn<\/td>\n<\/tr>\n
      Tr\u1ee5c th\u1eddi gian<\/strong><\/td>\nTr\u1ee5c ngang r\u00f5 r\u00e0ng<\/td>\nNg\u1ea7m \u0111\u1ecbnh (t\u1eeb tr\u00e1i sang ph\u1ea3i)<\/td>\n<\/tr>\n
      Kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i<\/strong><\/td>\nHi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng c\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i<\/td>\nCh\u1ec9 hi\u1ec3n th\u1ecb lu\u1ed3ng tin nh\u1eafn<\/td>\n<\/tr>\n
      \u0110\u1ed3ng th\u1eddi<\/strong><\/td>\n\u0110\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua s\u1ef1 tr\u00f9ng l\u1eb7p<\/td>\n\u0110\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua c\u00e1c khung song song<\/td>\n<\/tr>\n
      D\u00f9ng t\u1ed1t nh\u1ea5t cho<\/strong><\/td>\nC\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian th\u1ef1c, \u0110\u1ed9 tr\u1ec5<\/td>\nLu\u1ed3ng logic, t\u01b0\u01a1ng t\u00e1c API<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 th\u1ee9 t\u1ef1 \u0111\u1ec3 hi\u1ec3u\u0111i\u1ec1u g\u00ec<\/em>x\u1ea3y ra. S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u1ec3 hi\u1ec3ukhi n\u00e0o<\/em>n\u00f3 x\u1ea3y ra v\u00e0 k\u00e9o d\u00e0i bao l\u00e2u.<\/p>\n

      Quy tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a t\u1eebng b\u01b0\u1edbc \ud83d\udcdd<\/h2>\n

      Vi\u1ec7c x\u00e2y d\u1ef1ng m\u1ed9t s\u01a1 \u0111\u1ed3 th\u1eddi gian h\u1ee3p l\u1ec7 \u0111\u00f2i h\u1ecfi m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac. N\u00f3 b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c hi\u1ec3u y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng v\u00e0 k\u1ebft th\u00fac b\u1eb1ng ki\u1ec3m tra x\u00e1c minh.<\/p>\n

      B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh \u0111\u1ed1i t\u01b0\u1ee3ng \ud83e\udde9<\/h3>\n

      Li\u1ec7t k\u00ea t\u1ea5t c\u1ea3 c\u00e1c th\u1ef1c th\u1ec3 tham gia v\u00e0o t\u01b0\u01a1ng t\u00e1c. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0 c\u00e1c m\u00f4-\u0111un ph\u1ea7n m\u1ec1m, c\u1ea3m bi\u1ebfn ph\u1ea7n c\u1ee9ng ho\u1eb7c giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng. T\u1ea1o m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng cho m\u1ed7i th\u1ef1c th\u1ec3.<\/p>\n

      B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh tr\u1ea1ng th\u00e1i \ud83c\udfaf<\/h3>\n

      X\u00e1c \u0111\u1ecbnh c\u00e1c tr\u1ea1ng th\u00e1i kh\u1ea3 d\u0129 cho m\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng. \u0110\u1ed1i v\u1edbi m\u1ed9t c\u1ea3m bi\u1ebfn, c\u00e1c tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 l\u00e0T\u1eaft<\/em>, \u0110ang hi\u1ec7u chu\u1ea9n<\/em>, \u0110ang \u0111\u1ecdc<\/em>, v\u00e0L\u1ed7i<\/em>. X\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng c\u00e1c tr\u1ea1ng th\u00e1i n\u00e0y tr\u01b0\u1edbc khi v\u1ebd.<\/p>\n

      B\u01b0\u1edbc 3: Thi\u1ebft l\u1eadp \u0111\u01b0\u1eddng th\u1eddi gian \u23f1\ufe0f<\/h3>\n

      Thi\u1ebft l\u1eadp thang th\u1eddi gian. H\u1ec7 th\u1ed1ng \u0111ang ch\u1ea1y theo th\u1eddi gian th\u1ef1c (gi\u00e2y) hay theo s\u1ef1 ki\u1ec7n (chu k\u1ef3)? Ghi ch\u00fa \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac c\u1ee7a t\u00ecnh hu\u1ed1ng.<\/p>\n

      B\u01b0\u1edbc 4: B\u1ea3n \u0111\u1ed3 c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 chuy\u1ec3n ti\u1ebfp \ud83d\udd04<\/h3>\n

      V\u1ebd c\u00e1c h\u1ed9p tr\u1ea1ng th\u00e1i. Ch\u1ec9 ra khi n\u00e0o m\u1ed9t s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t chuy\u1ec3n ti\u1ebfp t\u1eeb tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c. \u0110\u1ea3m b\u1ea3o v\u1ecb tr\u00ed ngang ph\u1ea3n \u00e1nh \u0111\u00fang th\u1eddi gian th\u1ef1c t\u1ebf.<\/p>\n

      B\u01b0\u1edbc 5: Th\u00eam r\u00e0ng bu\u1ed9c \ud83d\udd12<\/h3>\n

      Ghi ch\u00fa c\u00e1c kho\u1ea3ng th\u1eddi gian quan tr\u1ecdng. N\u1ebfu h\u1ec7 th\u1ed1ng ph\u1ea3i ph\u1ea3n h\u1ed3i trong m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3, h\u00e3y \u0111\u00e1nh d\u1ea5u r\u00e0ng bu\u1ed9c n\u00e0y tr\u00ean s\u01a1 \u0111\u1ed3 \u0111\u1ec3 l\u00e0m n\u1ed5i b\u1eadt c\u00e1c r\u1ee7i ro ti\u1ec1m \u1ea9n.<\/p>\n

      C\u00e1c kh\u00e1i ni\u1ec7m n\u00e2ng cao: Tr\u1ea1ng th\u00e1i l\u1ed3ng gh\u00e9p v\u00e0 bi\u1ec3u th\u1ee9c \ud83e\udde0<\/h2>\n

      C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u01b0\u1eddng y\u00eau c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a chi ti\u1ebft h\u01a1n so v\u1edbi kh\u1ea3 n\u0103ng cho ph\u00e9p c\u1ee7a c\u00e1c h\u1ed9p tr\u1ea1ng th\u00e1i \u0111\u01a1n gi\u1ea3n.<\/p>\n

      Tr\u1ea1ng th\u00e1i l\u1ed3ng gh\u00e9p<\/h3>\n

      M\u1ed9t h\u1ed9p tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 ch\u1ee9a c\u00e1c tr\u1ea1ng th\u00e1i con. \u0110i\u1ec1u n\u00e0y h\u1eefu \u00edch \u0111\u1ec3 hi\u1ec3n th\u1ecb h\u00e0nh vi n\u1ed9i b\u1ed9 khi \u0111\u1ed1i t\u01b0\u1ee3ng \u0111ang \u1edf tr\u1ea1ng th\u00e1i c\u1ea5p cao. V\u00ed d\u1ee5, m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u1edf tr\u1ea1ng th\u00e1i “\u0110ang ch\u1ea1y<\/em> tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 c\u00f3 c\u00e1c tr\u1ea1ng th\u00e1i l\u1ed3ng gh\u00e9p cho Ng\u01b0ng ho\u1ea1t \u0111\u1ed9ng<\/em>, \u0110ang x\u1eed l\u00fd<\/em>, v\u00e0 \u0110ang ch\u1edd<\/em>.<\/p>\n

      Bi\u1ec3u th\u1ee9c th\u1eddi gian<\/h3>\n

      C\u00e1c r\u00e0ng bu\u1ed9c c\u00f3 th\u1ec3 l\u00e0 to\u00e1n h\u1ecdc ho\u1eb7c m\u00f4 t\u1ea3. C\u00e1c bi\u1ec3u th\u1ee9c ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n

        \n
      • Th\u1eddi l\u01b0\u1ee3ng:<\/strong> [th\u1eddi l\u01b0\u1ee3ng: 10ms]<\/em><\/li>\n
      • \u0110\u1ed9 tr\u1ec5:<\/strong> [\u0111\u1ed9 tr\u1ec5: > 500ms]<\/em><\/li>\n
      • Kho\u1ea3ng th\u1eddi gian:<\/strong> [kho\u1ea3ng th\u1eddi gian: 100ms-200ms]<\/em><\/li>\n<\/ul>\n

        C\u00e1c bi\u1ec3u th\u1ee9c n\u00e0y cung c\u1ea5p \u0111\u1ed9 ch\u00ednh x\u00e1c cho c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng ho\u1eb7c c\u00e1c chuy\u00ean gia \u0111\u00e1nh gi\u00e1 ki\u1ec3m tra t\u00ednh ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt.<\/p>\n

        Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang \u26a0\ufe0f<\/h2>\n

        Ngay c\u1ea3 nh\u1eefng ng\u01b0\u1eddi m\u00f4 h\u00ecnh h\u00f3a c\u00f3 kinh nghi\u1ec7m c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra l\u1ed7i l\u00e0m m\u1edd gi\u00e1 tr\u1ecb c\u1ee7a s\u01a1 \u0111\u1ed3. Nh\u1eadn th\u1ee9c v\u1ec1 nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn s\u1ebd c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ea7u ra.<\/p>\n

        1. Qu\u00e1 t\u1ea3i c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi<\/h3>\n

        Th\u00eam qu\u00e1 nhi\u1ec1u \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0o m\u1ed9t s\u01a1 \u0111\u1ed3 s\u1ebd t\u1ea1o ra ti\u1ebfng \u1ed3n th\u1ecb gi\u00e1c. N\u1ebfu m\u1ed9t t\u00ecnh hu\u1ed1ng li\u00ean quan \u0111\u1ebfn m\u01b0\u1eddi th\u00e0nh ph\u1ea7n kh\u00e1c nhau, h\u00e3y c\u00e2n nh\u1eafc chia s\u01a1 \u0111\u1ed3 th\u00e0nh nhi\u1ec1u g\u00f3c nh\u00ecn ho\u1eb7c s\u1eed d\u1ee5ng b\u1ea3n t\u1ed5ng quan c\u1ea5p cao k\u00e8m theo c\u00e1c s\u01a1 \u0111\u1ed3 con chi ti\u1ebft.<\/p>\n

        2. B\u1ecf qua \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1eddi gian<\/h3>\n

        S\u1eed d\u1ee5ng c\u00e1c \u0111\u01a1n v\u1ecb th\u1eddi gian kh\u00f4ng nh\u1ea5t qu\u00e1n s\u1ebd l\u00e0m ng\u01b0\u1eddi \u0111\u1ecdc b\u1ed1i r\u1ed1i. Kh\u00f4ng n\u00ean tr\u1ed9n l\u1eabn gi\u00e2y v\u00e0 mili gi\u00e2y m\u00e0 kh\u00f4ng c\u00f3 nh\u00e3n r\u00f5 r\u00e0ng. Lu\u00f4n x\u00e1c \u0111\u1ecbnh \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng tr\u00ean tr\u1ee5c th\u1eddi gian.<\/p>\n

        3. C\u00e1c chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i m\u01a1 h\u1ed3<\/h3>\n

        \u0110\u1ea3m b\u1ea3o m\u1ecdi chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i \u0111\u1ec1u \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi m\u1ed9t s\u1ef1 ki\u1ec7n r\u00f5 r\u00e0ng. N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i thay \u0111\u1ed5i m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 k\u00edch ho\u1ea1t r\u00f5 r\u00e0ng, s\u01a1 \u0111\u1ed3 s\u1ebd tr\u1edf n\u00ean suy \u0111o\u00e1n thay v\u00ec m\u00f4 t\u1ea3.<\/p>\n

        4. Thi\u1ebfu b\u1ed1i c\u1ea3nh<\/h3>\n

        S\u01a1 \u0111\u1ed3 th\u1eddi gian kh\u00f4ng n\u00ean t\u1ed3n t\u1ea1i trong tr\u1ea1ng th\u00e1i tr\u1ed1ng r\u1ed7ng. Tham chi\u1ebfu \u0111\u1ebfn c\u00e1c Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ho\u1eb7c S\u01a1 \u0111\u1ed3 l\u1edbp li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 tr\u1ea1ng th\u00e1i ph\u00f9 h\u1ee3p v\u1edbi ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng t\u1ed5ng th\u1ec3.<\/p>\n

        C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u00f5 r\u00e0ng \ud83c\udf1f<\/h2>\n

        \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 ph\u1ee5c v\u1ee5 m\u1ee5c \u0111\u00edch c\u1ee7a n\u00f3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, h\u00e3y tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y.<\/p>\n

          \n
        • \u0110\u1eb7t t\u00ean nh\u1ea5t qu\u00e1n:<\/strong> S\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 tr\u1ea1ng th\u00e1i tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c s\u01a1 \u0111\u1ed3.<\/li>\n
        • M\u00e3 m\u00e0u:<\/strong>S\u1eed d\u1ee5ng m\u00e0u s\u1eafc \u0111\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i s\u1ef1 ki\u1ec7n kh\u00e1c nhau (v\u00ed d\u1ee5 nh\u01b0 \u0110\u1ea7u v\u00e0o<\/em>, \u0110\u1ea7u ra<\/em>, B\u00ean trong<\/em>), nh\u01b0ng \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 v\u1eabn d\u1ec5 \u0111\u1ecdc khi in m\u00e0u \u0111en tr\u1eafng.<\/li>\n
        • C\u0103n ch\u1ec9nh:<\/strong>C\u0103n ch\u1ec9nh c\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i theo chi\u1ec1u d\u1ecdc khi ch\u00fang x\u1ea3y ra \u0111\u1ed3ng th\u1eddi. \u0110i\u1ec1u n\u00e0y gi\u00fap l\u00e0m n\u1ed5i b\u1eadt tr\u1ef1c quan kh\u00e1i ni\u1ec7m \u0111\u1ed3ng b\u1ed9 h\u00f3a.<\/li>\n
        • Ghi ch\u00fa:<\/strong>Th\u00eam ghi ch\u00fa cho c\u00e1c logic ph\u1ee9c t\u1ea1p m\u00e0 ch\u1ec9 d\u00f9ng h\u00ecnh d\u1ea1ng th\u00ec kh\u00f4ng th\u1ec3 bi\u1ec3u di\u1ec5n d\u1ec5 d\u00e0ng.<\/li>\n
        • X\u00e1c minh:<\/strong>Xem x\u00e9t s\u01a1 \u0111\u1ed3 theo y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng th\u1ef1c t\u1ebf. Th\u1eddi gian c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c r\u00e0ng bu\u1ed9c v\u1eadt l\u00fd ho\u1eb7c logic kh\u00f4ng?<\/li>\n<\/ul>\n

          C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf \ud83d\ude80<\/h2>\n

          Hi\u1ec3u \u0111\u01b0\u1ee3c n\u01a1i \u00e1p d\u1ee5ng c\u00f4ng c\u1ee5 n\u00e0y quan tr\u1ecdng kh\u00f4ng k\u00e9m vi\u1ec7c bi\u1ebft c\u00e1ch v\u1ebd n\u00f3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng t\u00ecnh hu\u1ed1ng m\u00e0 S\u01a1 \u0111\u1ed3 Th\u1eddi gian mang l\u1ea1i gi\u00e1 tr\u1ecb \u0111\u1ed9c \u0111\u00e1o.<\/p>\n

          H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n nh\u00fang<\/h3>\n

          Trong c\u00e1c h\u1ec7 th\u1ed1ng \u00f4 t\u00f4 ho\u1eb7c h\u00e0ng kh\u00f4ng, an to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o th\u1eddi gian ch\u00ednh x\u00e1c. H\u1ec7 th\u1ed1ng phanh ph\u1ea3i \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh sau khi c\u1ea3m bi\u1ebfn ph\u00e1t hi\u1ec7n v\u1eadt c\u1ea3n. S\u01a1 \u0111\u1ed3 Th\u1eddi gian c\u00f3 th\u1ec3 x\u00e1c minh r\u1eb1ng \u0111\u01b0\u1eddng truy\u1ec1n t\u00edn hi\u1ec7u t\u1eeb c\u1ea3m bi\u1ebfn \u0111\u1ebfn b\u1ed9 ch\u1ea5p h\u00e0nh \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c th\u1eddi h\u1ea1n n\u00e0y.<\/p>\n

          Giao th\u1ee9c m\u1ea1ng<\/h3>\n

          C\u00e1c giao th\u1ee9c th\u01b0\u1eddng c\u00f3 tr\u00ecnh t\u1ef1 trao \u0111\u1ed5i t\u00edn hi\u1ec7u nghi\u00eam ng\u1eb7t. S\u01a1 \u0111\u1ed3 Th\u1eddi gian c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb \u0111\u1ed9 tr\u1ec5 gi\u1eefa m\u1ed9t y\u00eau c\u1ea7u v\u00e0 x\u00e1c nh\u1eadn. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n c\u00e1c \u0111i\u1ec3m ngh\u1ebdn m\u1ea1ng ho\u1eb7c c\u00e1c v\u1ea5n \u0111\u1ec1 h\u1ebft th\u1eddi gian ch\u1edd.<\/p>\n

          X\u1eed l\u00fd \u00e2m thanh v\u00e0 video<\/h3>\n

          C\u00e1c \u1ee9ng d\u1ee5ng \u0111a ph\u01b0\u01a1ng ti\u1ec7n y\u00eau c\u1ea7u \u0111\u1ed3ng b\u1ed9 h\u00f3a. N\u1ebfu lu\u1ed3ng \u00e2m thanh v\u00e0 video kh\u00f4ng \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh, tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng s\u1ebd gi\u1ea3m s\u00fat. Vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1c tr\u1ea1ng th\u00e1i \u0111\u1ec7m v\u00e0 hi\u1ec3n th\u1ecb gi\u00fap c\u00e1c k\u1ef9 s\u01b0 c\u00e2n b\u1eb1ng lu\u1ed3ng x\u1eed l\u00fd.<\/p>\n

          Giao d\u1ecbch c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/h3>\n

          C\u01a1 ch\u1ebf kh\u00f3a v\u00e0 c\u00e1c thao t\u00e1c x\u00e1c nh\u1eadn c\u00f3 gi\u1edbi h\u1ea1n v\u1ec1 th\u1eddi gian. Vi\u1ec7c tr\u1ef1c quan h\u00f3a th\u1eddi gian m\u1ed9t giao d\u1ecbch gi\u1eef kh\u00f3a gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c t\u00ecnh hu\u1ed1ng ch\u1ebft ch\u1eb7n ti\u1ec1m \u1ea9n ho\u1eb7c suy gi\u1ea3m hi\u1ec7u su\u1ea5t khi t\u1ea3i cao.<\/p>\n

          Ph\u1ed1i h\u1ee3p x\u00e1c minh v\u00e0 ki\u1ec3m th\u1eed \u2705<\/h2>\n

          S\u01a1 \u0111\u1ed3 kh\u00f4ng ch\u1ec9 l\u00e0 t\u00e0i li\u1ec7u t\u0129nh; n\u00f3 l\u00e0 n\u1ec1n t\u1ea3ng cho vi\u1ec7c x\u00e1c minh. C\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t tr\u1ef1c ti\u1ebfp t\u1eeb c\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i v\u00e0 c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 th\u1eddi gian.<\/p>\n

            \n
          • Ki\u1ec3m th\u1eed th\u1eddi gian:<\/strong>X\u00e1c minh r\u1eb1ng h\u1ec7 th\u1ed1ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c th\u1eddi l\u01b0\u1ee3ng<\/em> c\u00e1c r\u00e0ng bu\u1ed9c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3.<\/li>\n
          • Ki\u1ec3m th\u1eed tr\u1ea1ng th\u00e1i:<\/strong> \u0110\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng chuy\u1ec3n sang c\u00e1c tr\u1ea1ng th\u00e1i \u0111\u00fang khi c\u00e1c s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3 x\u1ea3y ra.<\/li>\n
          • Ki\u1ec3m th\u1eed \u0111\u1ed3ng th\u1eddi:<\/strong> Ki\u1ec3m tra xem c\u00e1c qu\u00e1 tr\u00ecnh song song c\u00f3 kh\u00f4ng can thi\u1ec7p l\u1eabn nhau trong c\u00e1c kho\u1ea3ng th\u1eddi gian ch\u1ed3ng l\u1ea5n hay kh\u00f4ng.<\/li>\n<\/ul>\n

            B\u1eb1ng c\u00e1ch \u0111\u1ed3ng b\u1ed9 h\u00f3a ph\u1ea1m vi ki\u1ec3m th\u1eed v\u1edbi s\u01a1 \u0111\u1ed3, c\u00e1c \u0111\u1ed9i ng\u0169 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian kh\u00f4ng b\u1ecb b\u1ecf s\u00f3t trong giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n.<\/p>\n

            T\u00edch h\u1ee3p v\u1edbi c\u00e1c m\u00f4 h\u00ecnh kh\u00e1c \ud83d\udd17<\/h2>\n

            S\u01a1 \u0111\u1ed3 th\u1eddi gian hi\u1ebfm khi t\u1ed3n t\u1ea1i \u0111\u1ed9c l\u1eadp. N\u00f3 t\u00edch h\u1ee3p v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n UML kh\u00e1c \u0111\u1ec3 cung c\u1ea5p b\u1ee9c tranh to\u00e0n di\u1ec7n v\u1ec1 h\u1ec7 th\u1ed1ng.<\/p>\n

              \n
            • S\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i:<\/strong> C\u00e1c tr\u1ea1ng th\u00e1i trong s\u01a1 \u0111\u1ed3 th\u1eddi gian th\u01b0\u1eddng t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c tr\u1ea1ng th\u00e1i trong s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i. S\u01a1 \u0111\u1ed3 th\u1eddi gian b\u1ed5 sung chi\u1ec1u th\u1eddi gian v\u00e0o lu\u1ed3ng logic.<\/li>\n
            • S\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng:<\/strong> Trong khi s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng th\u1ec3 hi\u1ec7n lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n, s\u01a1 \u0111\u1ed3 th\u1eddi gian th\u1ec3 hi\u1ec7n th\u1eddi \u0111i\u1ec3m lu\u1ed3ng \u0111\u00f3 x\u1ea3y ra. Ch\u00fang b\u1ed5 sung cho nhau trong c\u00e1c h\u1ec7 th\u1ed1ng n\u1eb7ng v\u1ec1 quy tr\u00ecnh.<\/li>\n
            • S\u01a1 \u0111\u1ed3 tri\u1ec3n khai:<\/strong> Khi m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n, s\u01a1 \u0111\u1ed3 th\u1eddi gian c\u00f3 th\u1ec3 th\u1ec3 hi\u1ec7n \u0111\u1ed9 tr\u1ec5 m\u1ea1ng gi\u1eefa c\u00e1c n\u00fat kh\u00e1c nhau \u0111\u01b0\u1ee3c minh h\u1ecda trong s\u01a1 \u0111\u1ed3 tri\u1ec3n khai.<\/li>\n<\/ul>\n

              Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 m\u00f4 h\u00ecnh h\u00f3a th\u1eddi gian \ud83d\udca1<\/h2>\n

              Thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c gi\u1edbi h\u1ea1n th\u1eddi gian nghi\u00eam ng\u1eb7t \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c. S\u01a1 \u0111\u1ed3 th\u1eddi gian UML cung c\u1ea5p khung c\u1ea7n thi\u1ebft \u0111\u1ec3 tr\u1ef1c quan h\u00f3a, ph\u00e2n t\u00edch v\u00e0 truy\u1ec1n \u0111\u1ea1t c\u00e1c r\u00e0ng bu\u1ed9c n\u00e0y. N\u00f3 v\u01b0\u1ee3t ra ngo\u00e0i lu\u1ed3ng logic \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 gi\u1ea3i quy\u1ebft chi\u1ec1u quan tr\u1ecdng c\u1ee7a th\u1eddi gian.<\/p>\n

              B\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng, thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i v\u00e0 tr\u1ee5c th\u1eddi gian r\u00f5 r\u00e0ng, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ngh\u1ebdn ti\u1ec1m t\u00e0ng v\u00e0 x\u00e1c minh c\u00e1c h\u1ea1n ch\u00f3t tr\u01b0\u1edbc khi tri\u1ec3n khai b\u1eaft \u0111\u1ea7u. M\u1eb7c d\u00f9 \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 cao, nh\u01b0ng s\u1ef1 r\u00f5 r\u00e0ng thu \u0111\u01b0\u1ee3c khi hi\u1ec3u h\u00e0nh vi h\u1ec7 th\u1ed1ng theo th\u1eddi gian l\u00e0 v\u00f4 gi\u00e1. \u0110\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u00fang c\u00e1ch, c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o \u0111\u00e1ng tin c\u1eady cho ph\u00e1t tri\u1ec3n, ki\u1ec3m th\u1eed v\u00e0 b\u1ea3o tr\u00ec trong su\u1ed1t v\u00f2ng \u0111\u1eddi h\u1ec7 th\u1ed1ng.<\/p>\n

              H\u00e3y nh\u1edb r\u1eb1ng m\u1ee5c ti\u00eau l\u00e0 s\u1ef1 r\u00f5 r\u00e0ng. N\u1ebfu m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean qu\u00e1 ph\u1ee9c t\u1ea1p \u0111\u1ec3 \u0111\u1ecdc, n\u00f3 \u0111\u00e3 th\u1ea5t b\u1ea1i m\u1ee5c \u0111\u00edch. \u0110\u01a1n gi\u1ea3n h\u00f3a khi c\u00f3 th\u1ec3, ch\u00fa th\u00edch khi c\u1ea7n thi\u1ebft, v\u00e0 lu\u00f4n \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1eddng th\u1eddi gian ch\u00ednh x\u00e1c. C\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 k\u1ef7 lu\u1eadt n\u00e0y \u0111\u1ea3m b\u1ea3o c\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng v\u00e0 h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u01b0\u1edbng.<\/p>\n","protected":false},"excerpt":{"rendered":"

              Hi\u1ec3u r\u00f5 lu\u1ed3ng th\u1eddi gian b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng l\u00e0 \u0111i\u1ec1u then ch\u1ed1t \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf c\u00e1c \u1ee9ng d\u1ee5ng th\u1eddi gian th\u1ef1c, thi\u1ebft b\u1ecb nh\u00fang…<\/p>\n","protected":false},"author":1,"featured_media":543,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"H\u01b0\u1edbng d\u1eabn S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML: M\u00f4 h\u00ecnh h\u00f3a H\u1ec7 th\u1ed1ng theo Th\u1eddi gian","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch thi\u1ebft k\u1ebf s\u01a1 \u0111\u1ed3 th\u1eddi gian UML cho c\u00e1c h\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c. Hi\u1ec3u r\u00f5 c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng, thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i v\u00e0 c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 th\u1eddi gian v\u1edbi h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt to\u00e0n di\u1ec7n n\u00e0y.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[13],"tags":[39,43],"class_list":["post-542","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language","tag-academic","tag-timing-diagram"],"yoast_head":"\nH\u01b0\u1edbng d\u1eabn S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML: M\u00f4 h\u00ecnh h\u00f3a H\u1ec7 th\u1ed1ng theo Th\u1eddi gian<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch thi\u1ebft k\u1ebf s\u01a1 \u0111\u1ed3 th\u1eddi gian UML cho c\u00e1c h\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c. 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