{"id":1824,"date":"2026-04-04T04:10:25","date_gmt":"2026-04-04T04:10:25","guid":{"rendered":"https:\/\/www.ez-knowledge.com\/vi\/build-uml-sequence-diagram-step-by-step\/"},"modified":"2026-04-04T04:10:25","modified_gmt":"2026-04-04T04:10:25","slug":"build-uml-sequence-diagram-step-by-step","status":"publish","type":"post","link":"https:\/\/www.ez-knowledge.com\/vi\/build-uml-sequence-diagram-step-by-step\/","title":{"rendered":"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: X\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML th\u1ef1c t\u1ebf t\u1eebng b\u01b0\u1edbc"},"content":{"rendered":"

Thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi h\u01a1n c\u1ea3 vi\u1ec7c vi\u1ebft m\u00e3; n\u00f3 \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u r\u00f5 r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau giao ti\u1ebfp theo th\u1eddi gian. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML (Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t) \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u quan tr\u1ecdng cho m\u1ee5c \u0111\u00edch n\u00e0y. N\u00f3 tr\u1ef1c quan h\u00f3a c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c t\u00e1c nh\u00e2n trong m\u1ed9t khung th\u1eddi gian c\u1ee5 th\u1ec3, cung c\u1ea5p b\u1ea3n thi\u1ebft k\u1ebf cho h\u00e0nh vi tr\u01b0\u1edbc khi tri\u1ec3n khai b\u1eaft \u0111\u1ea7u. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t l\u1ed9 tr\u00ecnh chi ti\u1ebft v\u1ec1 vi\u1ec7c x\u00e2y d\u1ef1ng m\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 th\u1ef1c t\u1ebf, t\u1eadp trung v\u00e0o t\u00ednh r\u00f5 r\u00e0ng, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec.<\/p>\n

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\"Child's<\/figure>\n<\/div>\n

\ud83c\udfaf X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi v\u00e0 t\u00ecnh hu\u1ed1ng<\/h2>\n

Tr\u01b0\u1edbc khi v\u1ebd b\u1ea5t k\u1ef3 \u0111\u01b0\u1eddng n\u00e0o, ph\u1ea1m vi t\u01b0\u01a1ng t\u00e1c ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 kh\u00f4ng ph\u1ea3i l\u00e0 b\u1ea3n t\u1ed5ng quan h\u1ec7 th\u1ed1ng; n\u00f3 l\u00e0 m\u1ed9t c\u00e2u chuy\u1ec7n v\u1ec1 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3. Vi\u1ec7c ch\u1ecdn \u0111\u00fang t\u00ecnh hu\u1ed1ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 t\u1ea1o ra m\u1ed9t t\u00e0i li\u1ec7u h\u1eefu \u00edch.<\/p>\n

\ud83d\uded2 Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c ch\u1ecdn: Quy tr\u00ecnh thanh to\u00e1n an to\u00e0n<\/h3>\n

\u0110\u1ed1i v\u1edbi nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p n\u00e0y, ch\u00fang ta s\u1ebd m\u00f4 h\u00ecnh h\u00f3a quy tr\u00ecnh thanh to\u00e1n an to\u00e0n cho m\u1ed9t n\u1ec1n t\u1ea3ng b\u00e1n l\u1ebb tr\u1ef1c tuy\u1ebfn. T\u00ecnh hu\u1ed1ng n\u00e0y \u0111\u1ee7 ph\u1ee9c t\u1ea1p \u0111\u1ec3 minh h\u1ecda nhi\u1ec1u t\u00ednh n\u0103ng s\u01a1 \u0111\u1ed3 nh\u01b0ng v\u1eabn t\u1eadp trung \u0111\u1ee7 \u0111\u1ec3 d\u1ec5 \u0111\u1ecdc. M\u1ee5c ti\u00eau l\u00e0 theo d\u00f5i h\u00e0nh tr\u00ecnh t\u1eeb kho\u1ea3nh kh\u1eafc kh\u00e1ch h\u00e0ng nh\u1ea5p v\u00e0o n\u00fat “Thanh to\u00e1n” cho \u0111\u1ebfn x\u00e1c nh\u1eadn cu\u1ed1i c\u00f9ng c\u1ee7a giao d\u1ecbch.<\/p>\n

C\u00e1c m\u1ee5c ti\u00eau ch\u00ednh cho s\u01a1 \u0111\u1ed3 n\u00e0y bao g\u1ed3m:<\/p>\n

    \n
  • X\u00e1c th\u1ef1c:<\/strong>\u0110\u1ea3m b\u1ea3o th\u00f4ng tin thanh to\u00e1n l\u00e0 ch\u00ednh x\u00e1c.<\/li>\n
  • Ki\u1ec3m tra t\u1ed3n kho:<\/strong>X\u00e1c minh kh\u1ea3 n\u0103ng c\u00f3 h\u00e0ng t\u1ed3n kho tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n thanh to\u00e1n.<\/li>\n
  • Th\u00f4ng b\u00e1o:<\/strong>G\u1eedi email x\u00e1c nh\u1eadn \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng.<\/li>\n
  • X\u1eed l\u00fd l\u1ed7i:<\/strong>X\u1eed l\u00fd c\u00e1c t\u00ecnh hu\u1ed1ng khi c\u1ed5ng thanh to\u00e1n th\u1ea5t b\u1ea1i.<\/li>\n<\/ul>\n

    \ud83d\udc65 B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh c\u00e1c t\u00e1c nh\u00e2n v\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng<\/h2>\n

    B\u01b0\u1edbc k\u1ef9 thu\u1eadt \u0111\u1ea7u ti\u00ean bao g\u1ed3m vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u00e1c b\u00ean tham gia. Trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c b\u00ean tham gia \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ee9ng g\u1ecdi l\u00e0 \u0111\u01b0\u1eddng s\u1ed1ng. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0 c\u00e1c t\u00e1c nh\u00e2n con ng\u01b0\u1eddi ho\u1eb7c c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ea7n m\u1ec1m.<\/p>\n

    \ud83e\uddd1 T\u00e1c nh\u00e2n b\u00ean ngo\u00e0i<\/h3>\n

    M\u1ecdi t\u01b0\u01a1ng t\u00e1c \u0111\u1ec1u b\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t. Trong t\u00ecnh hu\u1ed1ng n\u00e0y, s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t l\u00e0 kh\u00e1ch h\u00e0ng. Ch\u00fang ta bi\u1ec3u di\u1ec5n \u0111i\u1ec1u n\u00e0y b\u1eb1ng bi\u1ec3u t\u01b0\u1ee3ng h\u00ecnh ng\u01b0\u1eddi \u0111\u01a1n gi\u1ea3n. Kh\u00e1ch h\u00e0ng kh\u1edfi t\u1ea1o quy tr\u00ecnh, nh\u01b0ng ch\u00fang ta kh\u00f4ng m\u00f4 ph\u1ecfng suy ngh\u0129 n\u1ed9i t\u00e2m c\u1ee7a h\u1ecd; ch\u1ec9 nh\u1eefng h\u00e0nh \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng.<\/p>\n

    \ud83d\udda5\ufe0f C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng b\u00ean trong<\/h3>\n

    Ti\u1ebfp theo, ch\u00fang ta x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00e0nh ph\u1ea7n h\u1ec7 th\u1ed1ng tham gia. \u0110\u1ec3 gi\u1eef cho s\u01a1 \u0111\u1ed3 d\u1ec5 qu\u1ea3n l\u00fd, ch\u00fang ta nh\u00f3m c\u00e1c tr\u00e1ch nhi\u1ec7m m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd:<\/p>\n

      \n
    • \u1ee8ng d\u1ee5ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (Frontend):<\/strong>Giao di\u1ec7n m\u00e0 kh\u00e1ch h\u00e0ng nh\u00ecn th\u1ea5y. N\u00f3 thu th\u1eadp \u0111\u1ea7u v\u00e0o v\u00e0 hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3.<\/li>\n
    • D\u1ecbch v\u1ee5 \u0110\u1eb7t h\u00e0ng:<\/strong>Qu\u1ea3n l\u00fd logic t\u1ea1o b\u1ea3n ghi \u0111\u1eb7t h\u00e0ng.<\/li>\n
    • C\u1ed5ng thanh to\u00e1n:<\/strong>H\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i ch\u1ecbu tr\u00e1ch nhi\u1ec7m x\u1eed l\u00fd ti\u1ec1n.<\/li>\n
    • D\u1ecbch v\u1ee5 Kho h\u00e0ng:<\/strong>Ki\u1ec3m tra m\u1ee9c \u0111\u1ed9 t\u1ed3n kho v\u00e0 \u0111\u1eb7t gi\u1eef h\u00e0ng.<\/li>\n
    • D\u1ecbch v\u1ee5 Th\u00f4ng b\u00e1o:<\/strong> X\u1eed l\u00fd vi\u1ec7c giao email.<\/li>\n<\/ul>\n

      M\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0y s\u1ebd c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng th\u1eb3ng \u0111\u1ee9ng k\u00e9o d\u00e0i t\u1eeb \u0111\u1ec9nh s\u01a1 \u0111\u1ed3. Vi\u1ec7c s\u1eafp x\u1ebfp c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng n\u00e0y m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd l\u00e0 r\u1ea5t quan tr\u1ecdng, th\u01b0\u1eddng \u0111\u1eb7t ng\u01b0\u1eddi kh\u1edfi t\u1ea1o \u1edf b\u00ean tr\u00e1i v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c \u1edf b\u00ean ph\u1ea3i.<\/p>\n

      \ud83d\udcc9 B\u01b0\u1edbc 2: Thi\u1ebft l\u1eadp c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng v\u00e0 thanh k\u00edch ho\u1ea1t<\/h2>\n

      Sau khi \u0111\u1eb7t c\u00e1c th\u00e0nh vi\u00ean tham gia, ch\u00fang ta v\u1ebd c\u00e1c \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng xu\u1ed1ng trang. \u0110\u00e2y l\u00e0 c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. Ch\u00fang \u0111\u1ea1i di\u1ec7n cho s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c. \u1ede \u0111\u1ea7u m\u1ed7i \u0111\u01b0\u1eddng, ch\u00fang ta \u0111\u1eb7t t\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 lo\u1ea1i c\u1ee7a n\u00f3 (v\u00ed d\u1ee5: Kh\u00e1ch h\u00e0ng, D\u1ecbch v\u1ee5\u0110\u01a1nH\u00e0ng).<\/p>\n

      Thanh k\u00edch ho\u1ea1t:<\/strong>\u0110\u1ec3 ch\u1ec9 ra khi n\u00e0o m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u0111ang th\u1ef1c hi\u1ec7n m\u1ed9t nhi\u1ec7m v\u1ee5, ch\u00fang ta v\u1ebd m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt h\u1eb9p tr\u00ean \u0111\u01b0\u1eddng s\u1ed1ng. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 thanh k\u00edch ho\u1ea1t. N\u00f3 gi\u00fap ng\u01b0\u1eddi \u0111\u1ecdc hi\u1ec3u \u0111\u01b0\u1ee3c khi n\u00e0o \u0111\u1ed1i t\u01b0\u1ee3ng \u0111ang b\u1eadn v\u00e0 kh\u00f4ng th\u1ec3 x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u kh\u00e1c ngay l\u1eadp t\u1ee9c.<\/p>\n

      \ud83d\udcca B\u1ea3ng: C\u00e1c y\u1ebfu t\u1ed1 v\u00f2ng \u0111\u1eddi<\/h3>\n\n\n\n\n\n\n\n\n
      Y\u1ebfu t\u1ed1<\/th>\nBi\u1ec3u di\u1ec5n tr\u1ef1c quan<\/th>\nM\u1ee5c \u0111\u00edch<\/th>\n<\/tr>\n<\/thead>\n
      \u0110\u01b0\u1eddng s\u1ed1ng<\/td>\n\u0110\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng<\/td>\nHi\u1ec3n th\u1ecb s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a th\u00e0nh vi\u00ean theo th\u1eddi gian.<\/td>\n<\/tr>\n
      Thanh k\u00edch ho\u1ea1t<\/td>\nH\u00ecnh ch\u1eef nh\u1eadt tr\u00ean \u0111\u01b0\u1eddng s\u1ed1ng<\/td>\nCh\u1ec9 ra qu\u00e1 tr\u00ecnh x\u1eed l\u00fd ho\u1eb7c ki\u1ec3m so\u00e1t \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/td>\n<\/tr>\n
      M\u0169i t\u00ean tin nh\u1eafn<\/td>\nM\u0169i t\u00ean ngang<\/td>\nHi\u1ec3n th\u1ecb s\u1ef1 giao ti\u1ebfp gi\u1eefa c\u00e1c th\u00e0nh vi\u00ean tham gia.<\/td>\n<\/tr>\n
      Tin nh\u1eafn tr\u1ea3 v\u1ec1<\/td>\nM\u0169i t\u00ean \u0111\u1ee9t \u0111o\u1ea1n<\/td>\nCh\u1ec9 ra ph\u1ea3n h\u1ed3i ho\u1eb7c vi\u1ec7c tr\u1ea3 v\u1ec1 d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \ud83d\udcac B\u01b0\u1edbc 3: B\u1ea3n \u0111\u1ed3 h\u00f3a tin nh\u1eafn v\u00e0 t\u01b0\u01a1ng t\u00e1c<\/h2>\n

      Trung t\u00e2m c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 lu\u1ed3ng tin nh\u1eafn. C\u00e1c tin nh\u1eafn \u0111\u1ea1i di\u1ec7n cho c\u00e1c l\u1eddi g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c ho\u1eb7c t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng. Ch\u00fang ta v\u1ebd ch\u00fang d\u01b0\u1edbi d\u1ea1ng m\u0169i t\u00ean ngang k\u1ebft n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. H\u01b0\u1edbng c\u1ee7a m\u0169i t\u00ean cho bi\u1ebft ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn.<\/p>\n

      \ud83d\udd17 Tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 so v\u1edbi tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9<\/h3>\n

      Hi\u1ec3u \u0111\u01b0\u1ee3c th\u1eddi \u0111i\u1ec3m c\u1ee7a c\u00e1c tin nh\u1eafn l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh x\u00e1c.<\/p>\n

        \n
      • \u0110\u1ed3ng b\u1ed9:<\/strong>Ng\u01b0\u1eddi g\u1eedi ch\u1edd ph\u1ea3n h\u1ed3i tr\u01b0\u1edbc khi ti\u1ebfp t\u1ee5c. Tr\u1ef1c quan, \u0111\u00e2y l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng li\u1ec1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean \u0111\u01b0\u1ee3c t\u00f4 \u0111\u1ea7y. V\u00ed d\u1ee5, khi Frontend y\u00eau c\u1ea7u D\u1ecbch v\u1ee5\u0110\u01a1nH\u00e0ng t\u1ea1o m\u1ed9t \u0111\u01a1n h\u00e0ng, n\u00f3 s\u1ebd ch\u1edd x\u00e1c nh\u1eadn.<\/li>\n
      • B\u1ea5t \u0111\u1ed3ng b\u1ed9:<\/strong>Ng\u01b0\u1eddi g\u1eedi g\u1eedi tin nh\u1eafn v\u00e0 ti\u1ebfp t\u1ee5c m\u00e0 kh\u00f4ng ch\u1edd \u0111\u1ee3i. Tr\u1ef1c quan, \u0111\u00e2y l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng li\u1ec1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf. M\u1ed9t v\u00ed d\u1ee5 l\u00e0 D\u1ecbch v\u1ee5Th\u00f4ng b\u00e1o g\u1eedi m\u1ed9t b\u1ea3n ghi n\u1ec1n v\u00e0o D\u1ecbch v\u1ee5Ki\u1ec3m to\u00e1n.<\/li>\n<\/ul>\n

        X\u00e2y d\u1ef1ng lu\u1ed3ng:<\/strong><\/p>\n

          \n
        1. Kh\u1edfi t\u1ea1o:<\/strong> Kh\u00e1ch h\u00e0ng g\u1eedi m\u1ed9t Y\u00eau c\u1ea7u thanh to\u00e1n<\/em>tin nh\u1eafn \u0111\u1ebfn \u1ee8ng d\u1ee5ng Frontend.<\/li>\n
        2. X\u00e1c th\u1ef1c:<\/strong> \u1ee8ng d\u1ee5ng Frontend g\u1eedi m\u1ed9t X\u00e1c th\u1ef1c chi ti\u1ebft<\/em>tin nh\u1eafn \u0111\u1ebfn D\u1ecbch v\u1ee5 \u0110\u01a1n h\u00e0ng.<\/li>\n
        3. Ki\u1ec3m tra kho:<\/strong> D\u1ecbch v\u1ee5 \u0110\u01a1n h\u00e0ng g\u1eedi m\u1ed9t Ki\u1ec3m tra t\u1ed3n kho<\/em>tin nh\u1eafn \u0111\u1ebfn D\u1ecbch v\u1ee5 Kho.<\/li>\n
        4. X\u1eed l\u00fd:<\/strong> Sau khi x\u00e1c nh\u1eadn t\u1ed3n kho, D\u1ecbch v\u1ee5 \u0110\u01a1n h\u00e0ng g\u1eedi m\u1ed9t X\u1eed l\u00fd giao d\u1ecbch<\/em>tin nh\u1eafn \u0111\u1ebfn C\u1ed5ng thanh to\u00e1n.<\/li>\n
        5. X\u00e1c nh\u1eadn:<\/strong> C\u1ed5ng thanh to\u00e1n tr\u1ea3 v\u1ec1 m\u1ed9t Th\u00e0nh c\u00f4ng<\/em>tin nh\u1eafn \u0111\u1ebfn D\u1ecbch v\u1ee5 \u0110\u01a1n h\u00e0ng.<\/li>\n
        6. Ho\u00e0n t\u1ea5t:<\/strong> D\u1ecbch v\u1ee5 \u0110\u01a1n h\u00e0ng g\u1eedi m\u1ed9t T\u1ea1o \u0111\u01a1n h\u00e0ng<\/em>tin nh\u1eafn \u0111\u1ebfn C\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n
        7. Th\u00f4ng b\u00e1o:<\/strong> D\u1ecbch v\u1ee5 \u0110\u01a1n h\u00e0ng k\u00edch ho\u1ea1t m\u1ed9t G\u1eedi h\u00f3a \u0111\u01a1n<\/em>tin nh\u1eafn \u0111\u1ebfn D\u1ecbch v\u1ee5 Th\u00f4ng b\u00e1o.<\/li>\n<\/ol>\n

          M\u1ed7i m\u0169i t\u00ean n\u00ean \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n r\u00f5 r\u00e0ng b\u1eb1ng t\u00ean tin nh\u1eafn. Vi\u1ec7c \u0111\u00e1nh nh\u00e3n n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 bi\u1ebfn m\u1ed9t b\u1ea3n ph\u00e1c th\u1ea3o th\u00e0nh t\u00e0i li\u1ec7u \u0111\u1eb7c t\u1ea3.<\/p>\n

          \ud83e\udde0 B\u01b0\u1edbc 4: X\u1eed l\u00fd c\u00e1c nh\u00e1nh logic (Alt v\u00e0 Opt)<\/h2>\n

          C\u00e1c h\u1ec7 th\u1ed1ng th\u1ef1c t\u1ebf hi\u1ebfm khi tu\u00e2n theo m\u1ed9t h\u00e0nh tr\u00ecnh ho\u00e0n h\u1ea3o duy nh\u1ea5t. X\u1eed l\u00fd l\u1ed7i v\u00e0 logic \u0111i\u1ec1u ki\u1ec7n l\u00e0 nh\u1eefng th\u00e0nh ph\u1ea7n then ch\u1ed1t trong m\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 v\u1eefng ch\u1eafc. UML cung c\u1ea5p c\u00e1c \u0111o\u1ea1n t\u01b0\u01a1ng t\u00e1c \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c t\u00ecnh hu\u1ed1ng n\u00e0y.<\/p>\n

          \ud83d\udd00 \u0110o\u1ea1n Alt (T\u00f9y ch\u1ecdn)<\/h3>\n

          \u0110o\u1ea1n Alt<\/em>\u0110o\u1ea1n Alt \u0111\u1ea1i di\u1ec7n cho c\u1ea5u tr\u00fac if-else. N\u00f3 chia s\u01a1 \u0111\u1ed3 th\u00e0nh c\u00e1c ph\u1ea7n d\u1ef1a tr\u00ean m\u1ed9t \u0111i\u1ec1u ki\u1ec7n. N\u1ebfu \u0111i\u1ec1u ki\u1ec7n \u0111\u00fang, m\u1ed9t nh\u00e1nh s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n; n\u1ebfu sai, m\u1ed9t nh\u00e1nh kh\u00e1c s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\n

          Trong t\u00ecnh hu\u1ed1ng thanh to\u00e1n c\u1ee7a ch\u00fang ta, ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t \u0111o\u1ea1n Alt<\/em>khi ki\u1ec3m tra t\u1ed3n kho:<\/p>\n

            \n
          • \u0110i\u1ec1u ki\u1ec7n [inStock]:<\/strong> N\u1ebfu h\u00e0ng h\u00f3a c\u00f3 s\u1eb5n, h\u00e3y ti\u1ebfp t\u1ee5c sang b\u01b0\u1edbc thanh to\u00e1n.<\/li>\n
          • \u0110i\u1ec1u ki\u1ec7n [!inStock]:<\/strong> N\u1ebfu h\u00e0ng h\u00f3a kh\u00f4ng c\u00f3 s\u1eb5n, k\u00edch ho\u1ea1t c\u1ea3nh b\u00e1o h\u1ebft h\u00e0ng cho kh\u00e1ch h\u00e0ng.<\/li>\n<\/ul>\n

            V\u1ec1 m\u1eb7t tr\u1ef1c quan, \u0111i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c v\u1ebd nh\u01b0 m\u1ed9t h\u1ed9p n\u00e9t \u0111\u1ee9t bao quanh c\u00e1c nh\u00e1nh thay th\u1ebf, v\u1edbi \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c ghi nh\u00e3n \u1edf \u0111\u1ea7u m\u1ed7i ph\u1ea7n.<\/p>\n

            \ud83d\udd01 \u0110o\u1ea1n Loop<\/h3>\n

            N\u1ebfu m\u1ed9t qu\u00e1 tr\u00ecnh l\u1eb7p l\u1ea1i, h\u00e3y s\u1eed d\u1ee5ng m\u1ed9t \u0111o\u1ea1n Loop<\/em>\u0111o\u1ea1n. M\u1eb7c d\u00f9 \u00edt ph\u1ed5 bi\u1ebfn trong m\u1ed9t quy tr\u00ecnh thanh to\u00e1n \u0111\u01a1n gi\u1ea3n, h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t t\u00ecnh hu\u1ed1ng m\u00e0 kh\u00e1ch h\u00e0ng c\u00f3 nhi\u1ec1u m\u1eb7t h\u00e0ng trong gi\u1ecf h\u00e0ng. H\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 l\u1eb7p qua t\u1eebng m\u1eb7t h\u00e0ng \u0111\u1ec3 ki\u1ec3m tra t\u1ed3n kho ri\u00eang l\u1ebb. \u0110i\u1ec1u n\u00e0y gi\u00fap s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c g\u1ecdn g\u00e0ng thay v\u00ec v\u1ebd l\u1ea1i c\u00f9ng m\u1ed9t tr\u00ecnh t\u1ef1 nhi\u1ec1u l\u1ea7n.<\/p>\n

            \u23f3 B\u01b0\u1edbc 5: Bi\u1ec3u di\u1ec5n th\u1eddi gian v\u00e0 th\u1ef1c thi<\/h2>\n

            Th\u1eddi gian ch\u1ea3y t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. Tr\u1ee5c \u0111\u1ee9ng n\u00e0y l\u00e0 ng\u1ea7m nh\u01b0ng r\u1ea5t m\u1ea1nh m\u1ebd. Kho\u1ea3ng c\u00e1ch \u0111\u1ee9ng gi\u1eefa c\u00e1c tin nh\u1eafn th\u01b0\u1eddng \u0111\u1ea1i di\u1ec7n cho th\u1eddi gian tr\u00f4i qua ho\u1eb7c \u0111\u1ed9 tr\u1ec5 m\u1ea1ng.<\/p>\n

            \ud83d\ude80 K\u00edch ho\u1ea1t v\u00e0 v\u00f4 hi\u1ec7u h\u00f3a<\/h3>\n

            Khi m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng g\u1eedi m\u1ed9t tin nh\u1eafn, thanh k\u00edch ho\u1ea1t c\u1ee7a n\u00f3 b\u1eaft \u0111\u1ea7u. Khi n\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c tin nh\u1eafn tr\u1ea3 l\u1eddi, thanh k\u00edch ho\u1ea1t k\u1ebft th\u00fac. D\u1ea5u hi\u1ec7u tr\u1ef1c quan n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ngh\u1ebdn. N\u1ebfu m\u1ed9t thanh k\u00edch ho\u1ea1t k\u00e9o d\u00e0i qu\u00e1 m\u1ee9c, \u0111i\u1ec1u \u0111\u00f3 cho th\u1ea5y m\u1ed9t thao t\u00e1c t\u00ednh to\u00e1n n\u1eb7ng ho\u1eb7c m\u1ed9t ph\u1ee5 thu\u1ed9c b\u00ean ngo\u00e0i ch\u1eadm.<\/p>\n

            V\u00ed d\u1ee5 t\u00ecnh hu\u1ed1ng:<\/strong><\/p>\n

            N\u1ebfu C\u1ed5ng Thanh to\u00e1n m\u1ea5t 5 gi\u00e2y \u0111\u1ec3 ph\u1ea3n h\u1ed3i, thanh k\u00edch ho\u1ea1t cho D\u1ecbch v\u1ee5 \u0110\u01a1n h\u00e0ng s\u1ebd k\u00e9o d\u00e0i theo chi\u1ec1u d\u1ecdc trong su\u1ed1t th\u1eddi gian ch\u1edd \u0111\u00f3. \u0110\u00e2y l\u00e0 th\u00f4ng tin qu\u00fd gi\u00e1 cho c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 c\u1ea7n t\u1ed1i \u01b0u h\u00f3a kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

            \ud83d\udd0d B\u01b0\u1edbc 6: Xem x\u00e9t v\u00e0 tinh ch\u1ec9nh<\/h2>\n

            Sau khi s\u01a1 \u0111\u1ed3 b\u1ea3n nh\u00e1p ho\u00e0n t\u1ea5t, c\u1ea7n c\u00f3 qu\u00e1 tr\u00ecnh xem x\u00e9t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c. M\u1ed9t s\u01a1 \u0111\u1ed3 qu\u00e1 ph\u1ee9c t\u1ea1p l\u00e0 v\u00f4 d\u1ee5ng, trong khi m\u1ed9t s\u01a1 \u0111\u1ed3 qu\u00e1 \u0111\u01a1n gi\u1ea3n l\u1ea1i g\u00e2y hi\u1ec3u l\u1ea7m.<\/p>\n

            \u2705 Danh s\u00e1ch ki\u1ec3m tra x\u00e1c th\u1ef1c<\/h3>\n
              \n
            • \u0110\u1ea7y \u0111\u1ee7:<\/strong> M\u1ed7i tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi c\u00f3 \u0111\u01b0\u1eddng ph\u1ea3n h\u1ed3i ho\u1eb7c ph\u1ea3n \u1ee9ng t\u01b0\u01a1ng \u1ee9ng kh\u00f4ng?<\/li>\n
            • R\u00f5 r\u00e0ng:<\/strong> C\u00e1c t\u00ean tin nh\u1eafn c\u00f3 m\u00f4 t\u1ea3 r\u00f5 r\u00e0ng kh\u00f4ng? Tr\u00e1nh d\u00f9ng c\u00e1c thu\u1eadt ng\u1eef chung chung nh\u01b0 “L\u00e0m \u0111i”.<\/li>\n
            • T\u00ednh nh\u1ea5t qu\u00e1n:<\/strong> C\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng c\u00f3 \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh \u0111\u00fang c\u00e1ch kh\u00f4ng? C\u00e1c m\u0169i t\u00ean c\u00f3 giao nhau m\u1ed9t c\u00e1ch kh\u00f4ng c\u1ea7n thi\u1ebft kh\u00f4ng?<\/li>\n
            • T\u00ednh d\u1ec5 \u0111\u1ecdc:<\/strong> Lu\u1ed3ng logic c\u00f3 d\u1ec5 theo d\u00f5i t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi kh\u00f4ng?<\/li>\n<\/ul>\n

              \ud83d\udd04 C\u1ea3i ti\u1ebfn theo t\u1eebng b\u01b0\u1edbc<\/h3>\n

              S\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 hi\u1ebfm khi ho\u00e0n h\u1ea3o ngay l\u1ea7n \u0111\u1ea7u ti\u00ean. R\u1ea5t ph\u1ed5 bi\u1ebfn khi di chuy\u1ec3n c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u1ec3 gi\u1ea3m s\u1ed1 m\u0169i t\u00ean giao nhau. B\u1ea1n c\u00f3 th\u1ec3 nh\u00f3m c\u00e1c t\u01b0\u01a1ng t\u00e1c li\u00ean quan l\u1ea1i v\u1edbi nhau \u0111\u1ec3 l\u00e0m r\u00f5 logic h\u01a1n. N\u1ebfu m\u1ed9t ph\u1ea7n qu\u00e1 ch\u1eadt ch\u1ed9i, h\u00e3y c\u00e2n nh\u1eafc chia n\u00f3 th\u00e0nh m\u1ed9t s\u01a1 \u0111\u1ed3 c\u1ea5p cao h\u01a1n v\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 con chi ti\u1ebft.<\/p>\n

              \ud83d\udeab Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/h2>\n

              Ngay c\u1ea3 nh\u1eefng ng\u01b0\u1eddi m\u00f4 h\u00ecnh h\u00f3a c\u00f3 kinh nghi\u1ec7m c\u0169ng m\u1eafc sai l\u1ea7m. Nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn s\u1ebd ti\u1ebft ki\u1ec7m th\u1eddi gian trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n v\u00e0 t\u00e0i li\u1ec7u h\u00f3a.<\/p>\n

                \n
              • Qu\u00e1 t\u1ea3i \u0111\u01b0\u1eddng s\u1ed1ng:<\/strong> \u0110\u1eebng \u0111\u1eb7t c\u00e1c quy tr\u00ecnh kh\u00f4ng li\u00ean quan tr\u00ean c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng. Gi\u1eef cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u1eadp trung v\u00e0o tr\u00e1ch nhi\u1ec7m c\u1ee5 th\u1ec3 c\u1ee7a ch\u00fang.<\/li>\n
              • B\u1ecf qua tr\u1ea1ng th\u00e1i:<\/strong> S\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 th\u1ec3 hi\u1ec7n h\u00e0nh vi, ch\u1ee9 kh\u00f4ng ph\u1ea3i tr\u1ea1ng th\u00e1i. \u0110\u1eebng d\u00f9ng n\u00f3 \u0111\u1ec3 gi\u1ea3i th\u00edch c\u00e1c thu\u1ed9c t\u00ednh \u0111\u1ed1i t\u01b0\u1ee3ng nh\u01b0 “s\u1ed1 d\u01b0” hay “tr\u1ea1ng th\u00e1i” tr\u1eeb khi \u0111i\u1ec1u \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn lu\u1ed3ng tin nh\u1eafn.<\/li>\n
              • Thi\u1ebfu c\u00e1c \u0111\u01b0\u1eddng d\u1eabn l\u1ed7i:<\/strong> Nhi\u1ec1u s\u01a1 \u0111\u1ed3 ch\u1ec9 th\u1ec3 hi\u1ec7n \u0111\u01b0\u1eddng \u0111i “vui v\u1ebb”. Lu\u00f4n m\u00f4 h\u00ecnh h\u00f3a \u0111i\u1ec1u g\u00ec x\u1ea3y ra khi d\u1ecbch v\u1ee5 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c \u0111\u1ea7u v\u00e0o kh\u00f4ng h\u1ee3p l\u1ec7.<\/li>\n
              • Qu\u00e1 nhi\u1ec1u chi ti\u1ebft:<\/strong> \u0110\u1eebng m\u00f4 h\u00ecnh h\u00f3a truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u cho t\u1eebng tr\u01b0\u1eddng. N\u1ebfu Frontend g\u1ecdiL\u1ea5y D\u1eef li\u1ec7u Ng\u01b0\u1eddi d\u00f9ng<\/em>, th\u00ec \u0111\u1eebng v\u1ebd s\u01a1 \u0111\u1ed3 truy v\u1ea5n SQL tr\u1eeb khi \u0111\u00f3 l\u00e0 tr\u1ecdng t\u00e2m c\u1ee7a nghi\u00ean c\u1ee9u.<\/li>\n
              • Th\u00f4ng tin t\u0129nh:<\/strong> \u0110\u1eebng d\u00f9ng s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 \u0111\u1ec3 gi\u1ea3i th\u00edch c\u1ea5u tr\u00fac l\u1edbp t\u0129nh. D\u00f9ng s\u01a1 \u0111\u1ed3 l\u1edbp cho m\u1ee5c \u0111\u00edch \u0111\u00f3.<\/li>\n<\/ul>\n

                \ud83d\udccb B\u1ea3ng: Tham chi\u1ebfu c\u00e1c lo\u1ea1i tin nh\u1eafn<\/h2>\n\n\n\n\n\n\n\n\n
                Lo\u1ea1i<\/th>\nKi\u1ec3u m\u0169i t\u00ean<\/th>\nH\u00e0nh vi<\/th>\nV\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n
                G\u1ecdi \u0111\u01a1n gi\u1ea3n<\/td>\n\u0110\u01b0\u1eddng li\u1ec1n, \u0111\u1ea7u \u0111\u1ea7y<\/td>\nCh\u1edd ph\u1ea3n h\u1ed3i.<\/td>\n\u0110\u1eb7t h\u00e0ng()<\/em><\/td>\n<\/tr>\n
                B\u1ea5t \u0111\u1ed3ng b\u1ed9<\/td>\n\u0110\u01b0\u1eddng li\u1ec1n, \u0111\u1ea7u m\u1edf<\/td>\nG\u1eedi \u0111i v\u00e0 qu\u00ean \u0111i.<\/td>\nLogEvent()<\/em><\/td>\n<\/tr>\n
                Tr\u1ea3 v\u1ec1<\/td>\n\u0110\u01b0\u1eddng g\u1ea1ch ch\u1ea5m, \u0111\u1ea7u m\u1edf<\/td>\nD\u1eef li\u1ec7u ph\u1ea3n h\u1ed3i.<\/td>\nOrderID<\/em><\/td>\n<\/tr>\n
                G\u1ecdi ch\u00ednh m\u00ecnh<\/td>\nM\u0169i t\u00ean cong<\/td>\n\u0110\u1ed1i t\u01b0\u1ee3ng g\u1ecdi ch\u00ednh n\u00f3.<\/td>\nCalculateTax()<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                \ud83d\udee0\ufe0f Chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o tr\u00ec v\u00e0 t\u00e0i li\u1ec7u h\u00f3a<\/h2>\n

                S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u s\u1ed1ng. Khi h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n, s\u01a1 \u0111\u1ed3 ph\u1ea3i \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt. T\u00e0i li\u1ec7u l\u1ed7i th\u1eddi c\u00f2n t\u1ec7 h\u01a1n c\u1ea3 kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u v\u00ec n\u00f3 d\u1eabn d\u1eaft sai c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n.<\/p>\n

                \ud83d\udcc5 T\u00edch h\u1ee3p v\u1edbi chu k\u1ef3 ph\u00e1t tri\u1ec3n<\/h3>\n

                T\u00edch h\u1ee3p vi\u1ec7c xem x\u00e9t s\u01a1 \u0111\u1ed3 v\u00e0o giai \u0111o\u1ea1n l\u1eadp k\u1ebf ho\u1ea1ch sprint. Khi th\u00eam t\u00ednh n\u0103ng m\u1edbi, c\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \u0111\u1ec3 ph\u1ea3n \u00e1nh c\u00e1c \u0111\u01b0\u1eddng t\u01b0\u01a1ng t\u00e1c m\u1edbi. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00e0i li\u1ec7u lu\u00f4n \u0111\u1ed3ng b\u1ed9 v\u1edbi c\u01a1 s\u1edf m\u00e3 ngu\u1ed3n.<\/p>\n

                \ud83d\udd17 Li\u00ean k\u1ebft v\u1edbi m\u00e3 ngu\u1ed3n<\/h3>\n

                N\u1ebfu c\u00f3 th\u1ec3, li\u00ean k\u1ebft c\u00e1c th\u00e0nh ph\u1ea7n s\u01a1 \u0111\u1ed3 v\u1edbi c\u00e1c kho m\u00e3 ngu\u1ed3n th\u1ef1c t\u1ebf. M\u1eb7c d\u00f9 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng kh\u1ea3 thi, nh\u01b0ng tham chi\u1ebfu \u0111\u1ebfn t\u00ean ph\u01b0\u01a1ng th\u1ee9c c\u1ee5 th\u1ec3 trong c\u01a1 s\u1edf m\u00e3 ngu\u1ed3n s\u1ebd gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n t\u00ecm th\u1ea5y tri\u1ec3n khai m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/p>\n

                \ud83e\udd1d H\u1ee3p t\u00e1c v\u00e0 s\u1ef1 th\u1ed1ng nh\u1ea5t \u0111\u1ed9i nh\u00f3m<\/h2>\n

                M\u1ed9t trong nh\u1eefng gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 kh\u1ea3 n\u0103ng th\u1ed1ng nh\u1ea5t \u0111\u1ed9i nh\u00f3m. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, ki\u1ec3m th\u1eed vi\u00ean v\u00e0 nh\u00e0 ph\u00e2n t\u00edch kinh doanh \u0111\u1ec1u c\u00f3 th\u1ec3 xem c\u00f9ng m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u00e0 \u0111\u1ed3ng thu\u1eadn v\u1ec1 h\u00e0nh vi.<\/p>\n

                \ud83d\udde3\ufe0f Th\u00fac \u0111\u1ea9y c\u00e1c cu\u1ed9c th\u1ea3o lu\u1eadn<\/h3>\n

                Trong c\u00e1c cu\u1ed9c h\u1ecdp, h\u00e3y s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 \u0111\u1ec3 ch\u1ec9 ra nh\u1eefng kho\u1ea3ng tr\u1ed1ng trong logic. \u0110\u1eb7t c\u00e1c c\u00e2u h\u1ecfi nh\u01b0:<\/p>\n

                  \n
                • \u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu m\u1ea1ng b\u1ecb ng\u1eaft trong b\u01b0\u1edbc thanh to\u00e1n?<\/li>\n
                • Ch\u00fang ta x\u1eed l\u00fd l\u1ea1i nh\u01b0 th\u1ebf n\u00e0o?<\/li>\n
                • Gi\u00e1 tr\u1ecb th\u1eddi gian ch\u1edd (timeout) c\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh cho tin nh\u1eafn n\u00e0y kh\u00f4ng?<\/li>\n<\/ul>\n

                  C\u00e1ch ti\u1ebfp c\u1eadn h\u1ee3p t\u00e1c n\u00e0y gi\u1ea3m thi\u1ec3u s\u1ef1 m\u01a1 h\u1ed3 v\u00e0 ng\u0103n ng\u1eeba c\u00f4ng vi\u1ec7c s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m x\u1ea3y ra \u1edf giai \u0111o\u1ea1n sau c\u1ee7a chu k\u1ef3 ph\u00e1t tri\u1ec3n.<\/p>\n

                  \ud83c\udfc1 Nh\u1eefng suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 m\u00f4 h\u00ecnh h\u00f3a<\/h2>\n

                  Vi\u1ec7c x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML l\u00e0 m\u1ed9t b\u00e0i t\u1eadp k\u1ef7 lu\u1eadt v\u1ec1 giao ti\u1ebfp. N\u00f3 bu\u1ed9c b\u1ea1n ph\u1ea3i suy ngh\u0129 v\u1ec1 h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t chu\u1ed7i c\u00e1c t\u01b0\u01a1ng t\u00e1c thay v\u00ec c\u00e1c kh\u1ed1i m\u00e3 ngu\u1ed3n t\u00e1ch bi\u1ec7t. B\u1eb1ng c\u00e1ch tu\u00e2n theo m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac\u2014x\u00e1c \u0111\u1ecbnh ph\u1ea1m vi, x\u00e1c \u0111\u1ecbnh c\u00e1c t\u00e1c nh\u00e2n, b\u1ea3n \u0111\u1ed3 h\u00f3a tin nh\u1eafn v\u00e0 x\u1eed l\u00fd logic\u2014b\u1ea1n t\u1ea1o ra m\u1ed9t t\u00e0i nguy\u00ean qu\u00fd gi\u00e1 cho \u0111\u1ed9i nh\u00f3m c\u1ee7a m\u00ecnh.<\/p>\n

                  H\u00e3y nh\u1edb r\u1eb1ng m\u1ee5c ti\u00eau l\u00e0 s\u1ef1 r\u00f5 r\u00e0ng. M\u1ed9t s\u01a1 \u0111\u1ed3 m\u1ea5t qu\u00e1 nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 hi\u1ec3u s\u1ebd th\u1ea5t b\u1ea1i nhi\u1ec7m v\u1ee5 c\u1ee7a n\u00f3. H\u00e3y gi\u1eef n\u00f3 s\u1ea1ch s\u1ebd, ch\u00ednh x\u00e1c v\u00e0 lu\u00f4n c\u1eadp nh\u1eadt. S\u1ef1 cam k\u1ebft v\u1edbi t\u00e0i li\u1ec7u tr\u1ef1c quan n\u00e0y s\u1ebd mang l\u1ea1i l\u1ee3i \u00edch l\u1edbn v\u1ec1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u1ec7 th\u1ed1ng v\u00e0 hi\u1ec7u qu\u1ea3 \u0111\u1ed9i nh\u00f3m.<\/p>\n

                  Khi b\u1ea1n ti\u1ebfp t\u1ee5c m\u00f4 h\u00ecnh h\u00f3a, h\u00e3y t\u1eadp trung v\u00e0o lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 trao \u0111\u1ed5i th\u00f4ng tin. Nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y tr\u1edf th\u00e0nh ng\u00f4n ng\u1eef chung c\u1ee7a ki\u1ebfn tr\u00fac c\u1ee7a b\u1ea1n, n\u1ed1i li\u1ec1n kho\u1ea3ng c\u00e1ch gi\u1eefa y\u00eau c\u1ea7u kinh doanh v\u00e0 tri\u1ec3n khai k\u1ef9 thu\u1eadt.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  Thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi h\u01a1n c\u1ea3 vi\u1ec7c vi\u1ebft m\u00e3; n\u00f3 \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u r\u00f5 r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c…<\/p>\n","protected":false},"author":1,"featured_media":1825,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"X\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc th\u1ef1c t\u1ebf","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML t\u1eebng b\u01b0\u1edbc. H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m c\u00e1c t\u00e1c nh\u00e2n, \u0111\u01b0\u1eddng s\u1ed1ng, tin nh\u1eafn v\u00e0 x\u1eed l\u00fd logic \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a t\u01b0\u01a1ng t\u00e1c h\u1ec7 th\u1ed1ng.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[50],"tags":[80,87],"class_list":["post-1824","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language","tag-academic","tag-sequence-diagram"],"yoast_head":"\nX\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc th\u1ef1c t\u1ebf<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML t\u1eebng b\u01b0\u1edbc. H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m c\u00e1c t\u00e1c nh\u00e2n, \u0111\u01b0\u1eddng s\u1ed1ng, tin nh\u1eafn v\u00e0 x\u1eed l\u00fd logic \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a t\u01b0\u01a1ng t\u00e1c h\u1ec7 th\u1ed1ng.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ez-knowledge.com\/vi\/build-uml-sequence-diagram-step-by-step\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"X\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc th\u1ef1c t\u1ebf\" \/>\n<meta property=\"og:description\" content=\"H\u1ecdc c\u00e1ch x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML t\u1eebng b\u01b0\u1edbc. 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