{"id":1805,"date":"2026-03-28T03:34:58","date_gmt":"2026-03-28T03:34:58","guid":{"rendered":"https:\/\/www.tech-posts.com\/vi\/case-study-modeling-concurrency-timing-diagrams\/"},"modified":"2026-03-28T03:34:58","modified_gmt":"2026-03-28T03:34:58","slug":"case-study-modeling-concurrency-timing-diagrams","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/vi\/case-study-modeling-concurrency-timing-diagrams\/","title":{"rendered":"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: M\u00f4 h\u00ecnh h\u00f3a t\u00ednh \u0111\u1ed3ng th\u1eddi b\u1eb1ng s\u01a1 \u0111\u1ed3 th\u1eddi gian"},"content":{"rendered":"

T\u00ednh \u0111\u1ed3ng th\u1eddi trong ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng \u0111\u1ea1i di\u1ec7n cho vi\u1ec7c th\u1ef1c thi \u0111\u1ed3ng th\u1eddi nhi\u1ec1u ti\u1ebfn tr\u00ecnh. \u0110\u00e2y l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n trong c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n, h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 t\u00ednh to\u00e1n hi\u1ec7u su\u1ea5t cao. Khi c\u00e1c th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau, th\u1eddi gian v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a tr\u1edf n\u00ean quan tr\u1ecdng. Nh\u1eefng t\u01b0\u01a1ng t\u00e1c kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c t\u00ecnh hu\u1ed1ng \u0111ua tranh, k\u1eb9t ti\u1ebfn tr\u00ecnh ho\u1eb7c b\u1ea5t nh\u1ea5t d\u1eef li\u1ec7u. \u0110\u1ec3 tr\u1ef1c quan h\u00f3a nh\u1eefng t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 d\u1ef1a v\u00e0o c\u00e1c k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a c\u1ee5 th\u1ec3. Trong s\u1ed1 \u0111\u00f3, s\u01a1 \u0111\u1ed3 th\u1eddi gian n\u1ed5i b\u1eadt nh\u1edd kh\u1ea3 n\u0103ng m\u00f4 t\u1ea3 ch\u00ednh x\u00e1c h\u00e0nh vi ph\u1ee5 thu\u1ed9c th\u1eddi gian. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 m\u1ed9t nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p to\u00e0n di\u1ec7n v\u1ec1 vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a t\u00ednh \u0111\u1ed3ng th\u1eddi b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y. Ch\u00fang ta s\u1ebd ph\u00e2n t\u00edch c\u1ea5u tr\u00fac, ph\u00e2n t\u00edch m\u1ed9t t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf v\u00e0 n\u00eau b\u1eadt c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t \u0111\u1ec3 bi\u1ec3u di\u1ec5n ch\u00ednh x\u00e1c.<\/p>\n

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\"Hand-drawn<\/figure>\n<\/div>\n

Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 th\u1eddi gian \ud83d\udcd0<\/h2>\n

S\u01a1 \u0111\u1ed3 th\u1eddi gian l\u00e0 m\u1ed9t lo\u1ea1i s\u01a1 \u0111\u1ed3 c\u1ee5 th\u1ec3 trong Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML). N\u00f3 t\u1eadp trung v\u00e0o m\u1ed1i quan h\u1ec7 v\u1ec1 th\u1eddi gian gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c ti\u1ebfn tr\u00ecnh. Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 tu\u1ea7n 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 tr\u1ea1ng th\u00e1i c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng theo th\u1eddi gian. Tr\u1ee5c \u0111\u1ee9ng \u0111\u1ea1i di\u1ec7n cho th\u1eddi gian, ch\u1ea3y t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi. Tr\u1ee5c ngang \u0111\u1ea1i di\u1ec7n cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng, ti\u1ebfn tr\u00ecnh ho\u1eb7c th\u00e0nh ph\u1ea7n h\u1ec7 th\u1ed1ng kh\u00e1c nhau.<\/p>\n

Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh bao g\u1ed3m:<\/p>\n

    \n
  • Thang th\u1eddi gian:<\/strong>M\u1ed9t \u0111\u01b0\u1eddng li\u00ean t\u1ee5c th\u1ec3 hi\u1ec7n s\u1ef1 tr\u00f4i qua c\u1ee7a th\u1eddi gian.<\/li>\n
  • \u0110\u01b0\u1eddng s\u1ed1ng tr\u1ea1ng th\u00e1i:<\/strong>C\u00e1c h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ee9ng cho th\u1ea5y khi n\u00e0o m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u0111ang ho\u1ea1t \u0111\u1ed9ng hay kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng.<\/li>\n
  • \u0110i\u1ec3m \u0111\u00e1nh d\u1ea5u s\u1ef1 ki\u1ec7n:<\/strong>Nh\u1eefng v\u00f2ng tr\u00f2n nh\u1ecf ho\u1eb7c v\u1ebft kh\u00eda tr\u00ean \u0111\u01b0\u1eddng s\u1ed1ng, ch\u1ec9 ra c\u00e1c s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3.<\/li>\n
  • S\u1ef1 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i:<\/strong>S\u1ef1 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng v\u00e0 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng.<\/li>\n<\/ul>\n

    Khi m\u00f4 h\u00ecnh h\u00f3a t\u00ednh \u0111\u1ed3ng th\u1eddi, nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y gi\u00fap ch\u00fang ta x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c th\u1eddi \u0111i\u1ec3m t\u00e0i nguy\u00ean b\u1ecb kh\u00f3a, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ecdc v\u00e0 ph\u1ea3n h\u1ed3i \u0111\u01b0\u1ee3c g\u1eedi \u0111i. S\u1ef1 ch\u00ednh x\u00e1c tr\u1ef1c quan n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 g\u1ee1 l\u1ed7i c\u00e1c \u0111i\u1ec3m ngh\u1ebdn hi\u1ec7u su\u1ea5t.<\/p>\n

    B\u1ed1i c\u1ea3nh nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p \ud83e\udde9<\/h2>\n

    \u0110\u1ec3 minh h\u1ecda t\u00ednh h\u1eefu d\u1ee5ng c\u1ee7a s\u01a1 \u0111\u1ed3 th\u1eddi gian, h\u00e3y xem x\u00e9t m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ed3ng b\u1ed9 h\u00f3a d\u1eef li\u1ec7u ph\u00e2n t\u00e1n. H\u1ec7 th\u1ed1ng n\u00e0y bao g\u1ed3m ba th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n

      \n
    • \u1ee8ng d\u1ee5ng kh\u00e1ch h\u00e0ng:<\/strong>Ngu\u1ed3n kh\u1edfi t\u1ea1o y\u00eau c\u1ea7u ghi d\u1eef li\u1ec7u.<\/li>\n
    • L\u1edbp trung gian:<\/strong>X\u1eed l\u00fd c\u00e2n b\u1eb1ng t\u1ea3i v\u00e0 \u0111\u1ecbnh tuy\u1ebfn y\u00eau c\u1ea7u.<\/li>\n
    • C\u1ee5m c\u01a1 s\u1edf d\u1eef li\u1ec7u:<\/strong>Hai n\u00fat (n\u00fat A v\u00e0 n\u00fat B) l\u01b0u tr\u1eef d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n

      M\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u gi\u1eefa c\u1ea3 hai n\u00fat \u0111\u1ed3ng th\u1eddi duy tr\u00ec \u0111\u1ed9 tr\u1ec5 th\u1ea5p. Th\u00e1ch th\u1ee9c v\u1ec1 t\u00ednh \u0111\u1ed3ng th\u1eddi n\u1ea3y sinh v\u00ec nhi\u1ec1u kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 g\u1eedi y\u00eau c\u1ea7u ghi d\u1eef li\u1ec7u \u0111\u1ed3ng th\u1eddi, v\u00e0 l\u1edbp trung gian ph\u1ea3i quy\u1ebft \u0111\u1ecbnh c\u00e1ch ph\u00e2n ph\u1ed1i c\u00e1c nhi\u1ec7m v\u1ee5 n\u00e0y.<\/p>\n

      Y\u00eau c\u1ea7u ban \u0111\u1ea7u \ud83d\udccb<\/h3>\n

      Tr\u01b0\u1edbc khi v\u1ebd s\u01a1 \u0111\u1ed3, ch\u00fang ta ph\u1ea3i x\u00e1c \u0111\u1ecbnh c\u00e1c r\u00e0ng bu\u1ed9c:<\/p>\n

        \n
      • C\u00e1c thao t\u00e1c \u0111\u1ecdc ph\u1ea3i lu\u00f4n \u0111\u01b0\u1ee3c ph\u1ee5c v\u1ee5 t\u1eeb thao t\u00e1c ghi g\u1ea7n nh\u1ea5t.<\/li>\n
      • C\u00e1c thao t\u00e1c ghi ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn ch\u1ec9 sau khi sao ch\u00e9p d\u1eef li\u1ec7u ho\u00e0n t\u1ea5t.<\/li>\n
      • H\u1ec7 th\u1ed1ng ph\u1ea3i x\u1eed l\u00fd \u0111\u01b0\u1ee3c s\u1ef1 bi\u1ebfn \u0111\u1ed9ng v\u1ec1 \u0111\u1ed9 tr\u1ec5 m\u1ea1ng.<\/li>\n
      • C\u00e1c t\u00ecnh hu\u1ed1ng k\u1eb9t ti\u1ebfn tr\u00ecnh ph\u1ea3i \u0111\u01b0\u1ee3c ng\u0103n ch\u1eb7n trong qu\u00e1 tr\u00ecnh nh\u1eadn kh\u00f3a.<\/li>\n<\/ul>\n

        Nh\u1eefng y\u00eau c\u1ea7u n\u00e0y quy \u0111\u1ecbnh c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 th\u1eddi gian m\u00e0 ch\u00fang ta s\u1ebd m\u00f4 h\u00ecnh h\u00f3a. V\u00ed d\u1ee5, n\u1ebfu thao t\u00e1c ghi m\u1ea5t nhi\u1ec1u th\u1eddi gian h\u01a1n d\u1ef1 ki\u1ebfn tr\u00ean n\u00fat A, h\u1ec7 th\u1ed1ng kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1eb7n \u1ee9ng d\u1ee5ng kh\u00e1ch h\u00e0ng m\u00e3i m\u00e3i.<\/p>\n

        M\u00f4 h\u00ecnh h\u00f3a t\u01b0\u01a1ng t\u00e1c t\u1eebng b\u01b0\u1edbc m\u1ed9t \ud83d\udee0\ufe0f<\/h2>\n

        Vi\u1ec7c x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u00f2i h\u1ecfi m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac. Ch\u00fang ta chia quy tr\u00ecnh th\u00e0nh c\u00e1c giai \u0111o\u1ea1n h\u1ee3p l\u00fd. M\u1ed7i giai \u0111o\u1ea1n th\u00eam m\u1ed9t l\u1edbp chi ti\u1ebft v\u00e0o h\u00ecnh \u1ea3nh tr\u1ef1c quan.<\/p>\n

        B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh c\u00e1c t\u00e1c nh\u00e2n v\u00e0 c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi \ud83c\udff7\ufe0f<\/h3>\n

        B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch v\u1ebd c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ee9ng cho t\u1eebng th\u00e0nh ph\u1ea7n. G\u1eafn nh\u00e3n r\u00f5 r\u00e0ng:<\/p>\n

          \n
        • Kh\u00e1ch h\u00e0ng \u26a1<\/li>\n
        • Trung gian \ud83d\udd04<\/li>\n
        • N\u00fat A \ud83d\udfe2<\/li>\n
        • N\u00fat B \ud83d\udd35<\/li>\n<\/ul>\n

          \u0110\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch ngang ph\u1ea3n \u00e1nh s\u1ef1 nh\u00f3m logic. C\u00e1c n\u00fat c\u1ee5m c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u00ean \u0111\u01b0\u1ee3c nh\u00f3m l\u1ea1i v\u1ec1 m\u1eb7t tr\u1ef1c quan, ngay c\u1ea3 khi ch\u00fang l\u00e0 c\u00e1c \u0111\u01b0\u1eddng ri\u00eang bi\u1ec7t.<\/p>\n

          B\u01b0\u1edbc 2: Thi\u1ebft l\u1eadp th\u1eddi \u0111i\u1ec3m g\u1ed1c \u23f1\ufe0f<\/h3>\n

          X\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u. Th\u01b0\u1eddng l\u00e0 kho\u1ea3nh kh\u1eafc \u1ee9ng d\u1ee5ng Kh\u00e1ch h\u00e0ng g\u1eedi y\u00eau c\u1ea7u \u0111\u1ea7u ti\u00ean. Ghi ch\u00fa r\u00f5 \u0111i\u1ec3m n\u00e0y \u1edf \u0111\u1ea7u \u0111\u01b0\u1eddng \u0111\u1eddi. T\u1ea5t c\u1ea3 c\u00e1c s\u1ef1 ki\u1ec7n ti\u1ebfp theo \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng d\u1ef1a tr\u00ean m\u1ed1c th\u1eddi gian n\u00e0y.<\/p>\n

          B\u01b0\u1edbc 3: B\u1ea3n \u0111\u1ed3 c\u00e1c tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng \ud83d\udfe6<\/h3>\n

          V\u1ebd c\u00e1c h\u00ecnh ch\u1eef nh\u1eadt d\u1ecdc theo c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi \u0111\u1ec3 ch\u1ec9 c\u00e1c kho\u1ea3ng th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng. Tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng c\u00f3 ngh\u0129a l\u00e0 th\u00e0nh ph\u1ea7n \u0111ang x\u1eed l\u00fd m\u1ed9t t\u00e1c v\u1ee5. V\u00ed d\u1ee5:<\/p>\n

            \n
          • Kh\u00e1ch h\u00e0ng \u0111ang ho\u1ea1t \u0111\u1ed9ng trong khi ch\u1edd ph\u1ea3n h\u1ed3i.<\/li>\n
          • Trung gian \u0111ang ho\u1ea1t \u0111\u1ed9ng trong khi \u0111\u1ecbnh tuy\u1ebfn y\u00eau c\u1ea7u.<\/li>\n
          • C\u00e1c n\u00fat \u0111ang ho\u1ea1t \u0111\u1ed9ng trong khi ghi d\u1eef li\u1ec7u v\u00e0o \u1ed5 \u0111\u0129a.<\/li>\n<\/ul>\n

            Nh\u1eefng thanh n\u00e0y gi\u00fap tr\u1ef1c quan h\u00f3a th\u1eddi gian th\u1ef1c hi\u1ec7n t\u00e1c v\u1ee5. N\u1ebfu m\u1ed9t thanh d\u00e0i h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c thanh kh\u00e1c, \u0111i\u1ec1u \u0111\u00f3 cho th\u1ea5y c\u00f3 th\u1ec3 x\u1ea3y ra \u0111i\u1ec3m ngh\u1ebdn.<\/p>\n

            B\u01b0\u1edbc 4: Ch\u00e8n c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 tin nh\u1eafn \u27a1\ufe0f<\/h3>\n

            K\u1ebft n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi b\u1eb1ng c\u00e1c m\u0169i t\u00ean \u0111\u1ec3 bi\u1ec3u di\u1ec5n tin nh\u1eafn. Trong s\u01a1 \u0111\u1ed3 th\u1eddi gian, nh\u1eefng m\u0169i t\u00ean n\u00e0y th\u01b0\u1eddng n\u1eb1m ngang ho\u1eb7c ch\u00e9o. G\u1eafn nh\u00e3n cho ch\u00fang b\u1eb1ng h\u00e0nh \u0111\u1ed9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 \u201cY\u00eau c\u1ea7u ghi\u201d ho\u1eb7c \u201cX\u00e1c nh\u1eadn\u201d.<\/p>\n

            Quan tr\u1ecdng nh\u1ea5t l\u00e0 ghi ch\u00fa th\u1eddi gian cho m\u1ed7i tin nh\u1eafn. N\u1ebfu \u0111\u1ed9 tr\u1ec5 m\u1ea1ng \u0111\u00e3 bi\u1ebft, h\u00e3y th\u00eam gi\u00e1 tr\u1ecb nh\u01b0 \u201c50ms\u201d. N\u1ebfu n\u00f3 thay \u0111\u1ed5i, ghi ch\u00fa \u201cBi\u1ebfn \u0111\u1ed5i\u201d.<\/p>\n

            Ph\u00e2n t\u00edch c\u00e1c m\u1eabu \u0111\u1ed3ng th\u1eddi \ud83d\udd04<\/h2>\n

            Sau khi v\u1ebd xong m\u00f4 h\u00ecnh ban \u0111\u1ea7u, ch\u00fang ta ph\u00e2n t\u00edch c\u00e1c m\u1eabu \u0111\u1ed3ng th\u1eddi. \u0110\u00e2y ch\u00ednh l\u00e0 n\u01a1i s\u01a1 \u0111\u1ed3 th\u1eddi gian th\u1ec3 hi\u1ec7n gi\u00e1 tr\u1ecb c\u1ee7a n\u00f3. Ch\u00fang ta t\u00ecm ki\u1ebfm c\u00e1c m\u1eabu c\u1ee5 th\u1ec3 cho th\u1ea5y t\u00ecnh tr\u1ea1ng l\u00e0nh m\u1ea1nh hay r\u1ee7i ro.<\/p>\n

            Th\u1ef1c thi song song so v\u1edbi ch\u1eb7n tu\u1ea7n t\u1ef1<\/h3>\n

            M\u1ed9t trong nh\u1eefng l\u1ee3i \u00edch ch\u00ednh c\u1ee7a k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a n\u00e0y l\u00e0 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c gi\u1eefa th\u1ef1c thi song song v\u00e0 th\u1ef1c thi tu\u1ea7n t\u1ef1. Trong nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p c\u1ee7a ch\u00fang ta, Trung gian c\u00f3 th\u1ec3 g\u1eedi y\u00eau c\u1ea7u ghi \u0111\u1ebfn N\u00fat A v\u00e0 N\u00fat B c\u00f9ng l\u00fac. \u0110\u00e2y l\u00e0 th\u1ef1c thi song song.<\/p>\n

            Ng\u01b0\u1ee3c l\u1ea1i, n\u00f3 c\u00f3 th\u1ec3 g\u1eedi \u0111\u1ebfn N\u00fat A, ch\u1edd ho\u00e0n th\u00e0nh, r\u1ed3i m\u1edbi g\u1eedi \u0111\u1ebfn N\u00fat B. \u0110\u00e2y l\u00e0 tu\u1ea7n t\u1ef1. S\u01a1 \u0111\u1ed3 th\u1eddi gian l\u00e0m r\u00f5 s\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y.<\/p>\n

            M\u1eabu song song:<\/strong><\/p>\n

              \n
            • Kh\u00e1ch h\u00e0ng g\u1eedi \u0111\u1ebfn Trung gian.<\/li>\n
            • Trung gian g\u1eedi \u0111\u1ebfn N\u00fat A v\u00e0 N\u00fat B c\u00f9ng l\u00fac.<\/li>\n
            • C\u1ea3 hai n\u00fat \u0111\u1ec1u x\u1eed l\u00fd \u0111\u1ed9c l\u1eadp.<\/li>\n
            • Trung gian ch\u1edd c\u1ea3 hai tr\u01b0\u1edbc khi ph\u1ea3n h\u1ed3i.<\/li>\n<\/ul>\n

              M\u1eabu tu\u1ea7n t\u1ef1:<\/strong><\/p>\n

                \n
              • Kh\u00e1ch h\u00e0ng g\u1eedi \u0111\u1ebfn Middleware.<\/li>\n
              • Middleware g\u1eedi \u0111\u1ebfn N\u00fat A.<\/li>\n
              • Middleware ch\u1edd N\u00fat A.<\/li>\n
              • Middleware g\u1eedi \u0111\u1ebfn N\u00fat B.<\/li>\n
              • Middleware ch\u1edd N\u00fat B.<\/li>\n<\/ul>\n

                S\u01a1 \u0111\u1ed3 th\u1eddi gian s\u1ebd hi\u1ec3n th\u1ecb hai thanh song song cho m\u1eabu song song v\u00e0 m\u1ed9t thanh ch\u1ed3ng cho m\u1eabu tu\u1ea7n t\u1ef1. D\u1ea5u hi\u1ec7u tr\u1ef1c quan n\u00e0y gi\u00fap c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 l\u1ef1a ch\u1ecdn chi\u1ebfn l\u01b0\u1ee3c ph\u00f9 h\u1ee3p.<\/p>\n

                Ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ea1nh tranh \u26a0\ufe0f<\/h3>\n

                M\u1ed9t \u0111i\u1ec1u ki\u1ec7n c\u1ea1nh tranh x\u1ea3y ra khi k\u1ebft qu\u1ea3 h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c v\u00e0o th\u1ee9 t\u1ef1 th\u1eddi gian t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n. Trong t\u00ecnh hu\u1ed1ng \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u1ee7a ch\u00fang ta, m\u1ed9t \u0111i\u1ec1u ki\u1ec7n c\u1ea1nh tranh c\u00f3 th\u1ec3 x\u1ea3y ra n\u1ebfu N\u00fat A ghi d\u1eef li\u1ec7u nh\u01b0ng N\u00fat B th\u1ea5t b\u1ea1i, tuy nhi\u00ean Kh\u00e1ch h\u00e0ng v\u1eabn nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn.<\/p>\n

                Tr\u00ean s\u01a1 \u0111\u1ed3 th\u1eddi gian, \u0111i\u1ec1u n\u00e0y xu\u1ea5t hi\u1ec7n nh\u01b0 m\u1ed9t s\u1ef1 kh\u00f4ng kh\u1edbp. Tin nh\u1eafn \u201cX\u00e1c nh\u1eadn\u201d t\u1eeb Middleware c\u00f3 th\u1ec3 x\u1ea3y ra tr\u01b0\u1edbc s\u1ef1 ki\u1ec7n \u201cGhi ho\u00e0n t\u1ea5t\u201d tr\u00ean N\u00fat B. B\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a d\u00f2ng th\u1eddi gian, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n nh\u1eefng kho\u1ea3ng tr\u1ed1ng n\u00e0y.<\/p>\n

                \u0110o \u0111\u1ed9 tr\u1ec5 v\u00e0 \u0111\u1ed9 dao \u0111\u1ed9ng \ud83d\udcc9<\/h3>\n

                C\u00e1c h\u1ec7 th\u1ed1ng th\u1ef1c t\u1ebf ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi \u0111\u1ed9 dao \u0111\u1ed9ng m\u1ea1ng. S\u01a1 \u0111\u1ed3 th\u1eddi gian cho ph\u00e9p ch\u00fang ta m\u00f4 h\u00ecnh h\u00f3a c\u00e1c t\u00ecnh hu\u1ed1ng x\u1ea5u nh\u1ea5t. Ch\u00fang ta c\u00f3 th\u1ec3 v\u1ebd m\u1ed9t \u0111\u01b0\u1eddng \u201c\u0110\u1ed9 tr\u1ec5 t\u1ed1i \u0111a\u201d song song v\u1edbi \u0111\u01b0\u1eddng \u201c\u0110\u1ed9 tr\u1ec5 mong \u0111\u1ee3i\u201d.<\/p>\n

                B\u1eb1ng c\u00e1ch so s\u00e1nh hai \u0111\u01b0\u1eddng n\u00e0y, ch\u00fang ta c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh xem h\u1ec7 th\u1ed1ng c\u00f3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c th\u1ecfa thu\u1eadn c\u1ea5p d\u1ecbch v\u1ee5 (SLAs) hay kh\u00f4ng. N\u1ebfu thanh \u0111\u1ed9 tr\u1ec5 t\u1ed1i \u0111a v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng th\u1eddi gian ch\u1edd c\u1ee7a Kh\u00e1ch h\u00e0ng, thi\u1ebft k\u1ebf c\u1ea7n \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a.<\/p>\n

                Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong m\u00f4 h\u00ecnh th\u1eddi gian \ud83d\udea7<\/h2>\n

                M\u1eb7c d\u00f9 m\u1ea1nh m\u1ebd, s\u01a1 \u0111\u1ed3 th\u1eddi gian c\u00f3 th\u1ec3 g\u00e2y hi\u1ec3u l\u1ea7m n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u00fang c\u00e1ch. M\u1ed9t s\u1ed1 sai l\u1ea7m ph\u1ed5 bi\u1ebfn t\u1ed3n t\u1ea1i m\u00e0 c\u00e1c k\u1ef9 s\u01b0 c\u1ea7n tr\u00e1nh.<\/p>\n

                Sai l\u1ea7m 1: B\u1ecf qua h\u00e0nh vi b\u1ea5t \u0111\u1ed3ng b\u1ed9<\/h3>\n

                Kh\u00f4ng ph\u1ea3i m\u1ecdi tin nh\u1eafn n\u00e0o c\u0169ng \u0111\u1ed3ng b\u1ed9. M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng m\u1eabu g\u1eedi r\u1ed3i qu\u00ean. N\u1ebfu b\u1ea1n m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t s\u1ef1 ki\u1ec7n b\u1ea5t \u0111\u1ed3ng b\u1ed9 nh\u01b0 m\u1ed9t ch\u1edd ch\u1eb7n, s\u01a1 \u0111\u1ed3 s\u1ebd hi\u1ec3n th\u1ecb nh\u1eefng \u0111\u1ed9 tr\u1ec5 kh\u00f4ng c\u1ea7n thi\u1ebft. Nh\u00e3n r\u00f5 r\u00e0ng c\u00e1c tin nh\u1eafn l\u00e0 \u201c\u0110\u1ed3ng b\u1ed9\u201d ho\u1eb7c \u201cB\u1ea5t \u0111\u1ed3ng b\u1ed9\u201d.<\/p>\n

                Sai l\u1ea7m 2: B\u1ecf qua c\u00e1c t\u00e1c v\u1ee5 n\u1ec1n<\/h3>\n

                C\u00e1c h\u1ec7 th\u1ed1ng th\u01b0\u1eddng ch\u1ea1y c\u00e1c quy tr\u00ecnh n\u1ec1n nh\u01b0 ghi nh\u1eadt k\u00fd ho\u1eb7c b\u1ed9 nh\u1edb \u0111\u1ec7m. Nh\u1eefng t\u00e1c v\u1ee5 n\u00e0y kh\u00f4ng ch\u1eb7n y\u00eau c\u1ea7u ch\u00ednh nh\u01b0ng ti\u00eau t\u1ed1n t\u00e0i nguy\u00ean. N\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n, s\u01a1 \u0111\u1ed3 s\u1ebd \u0111\u00e1nh gi\u00e1 th\u1ea5p t\u1ea3i tr\u1ecdng tr\u00ean c\u00e1c n\u00fat.<\/p>\n

                Sai l\u1ea7m 3: \u0110\u1ed9 ph\u00e2n gi\u1ea3i th\u1eddi gian m\u01a1 h\u1ed3<\/h3>\n

                S\u1eed d\u1ee5ng c\u00e1c thang th\u1eddi gian kh\u00f4ng nh\u1ea5t qu\u00e1n c\u00f3 th\u1ec3 l\u00e0m sai l\u1ec7ch nh\u1eadn th\u1ee9c v\u1ec1 t\u00ednh \u0111\u1ed3ng th\u1eddi. N\u1ebfu m\u1ed9t s\u1ef1 ki\u1ec7n \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng mili gi\u00e2y v\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n kh\u00e1c b\u1eb1ng gi\u00e2y m\u00e0 kh\u00f4ng c\u00f3 nh\u00e3n r\u00f5 r\u00e0ng, s\u01a1 \u0111\u1ed3 s\u1ebd tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc. H\u00e3y duy tr\u00ec m\u1ed9t \u0111\u01a1n v\u1ecb nh\u1ea5t qu\u00e1n ho\u1eb7c cung c\u1ea5p thanh thang \u0111o r\u00f5 r\u00e0ng.<\/p>\n

                Sai l\u1ea7m 4: Thi\u1ebfu v\u1eafng c\u1ea1nh tranh t\u00e0i nguy\u00ean<\/h3>\n

                T\u00ednh \u0111\u1ed3ng th\u1eddi th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn c\u00e1c t\u00e0i nguy\u00ean chung nh\u01b0 kh\u00f3a c\u01a1 s\u1edf d\u1eef li\u1ec7u. N\u1ebfu s\u01a1 \u0111\u1ed3 kh\u00f4ng hi\u1ec3n th\u1ecb th\u1eddi \u0111i\u1ec3m kh\u00f3a \u0111\u01b0\u1ee3c nh\u1eadn v\u00e0 gi\u1ea3i ph\u00f3ng, s\u1ebd kh\u00f4ng th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c hai ti\u1ebfn tr\u00ecnh c\u00f3 \u0111ang c\u1ea1nh tranh cho c\u00f9ng m\u1ed9t t\u00e0i nguy\u00ean hay kh\u00f4ng. H\u00e3y th\u00eam c\u00e1c k\u00fd hi\u1ec7u c\u1ee5 th\u1ec3 cho vi\u1ec7c nh\u1eadn kh\u00f3a.<\/p>\n

                C\u00e1c k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch n\u00e2ng cao \ud83d\udd0d<\/h2>\n

                V\u01b0\u1ee3t ra ngo\u00e0i tr\u1ef1c quan c\u01a1 b\u1ea3n, s\u01a1 \u0111\u1ed3 th\u1eddi gian h\u1ed7 tr\u1ee3 ph\u00e2n t\u00edch s\u00e2u h\u01a1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c k\u1ef9 thu\u1eadt n\u00e2ng cao \u0111\u1ec3 khai th\u00e1c gi\u00e1 tr\u1ecb t\u1eeb m\u00f4 h\u00ecnh.<\/p>\n

                M\u00f4 ph\u1ecfng t\u00ecnh hu\u1ed1ng<\/h3>\n

                S\u1eeda \u0111\u1ed5i s\u01a1 \u0111\u1ed3 \u0111\u1ec3 m\u00f4 ph\u1ecfng c\u00e1c ch\u1ebf \u0111\u1ed9 l\u1ed7i kh\u00e1c nhau. \u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu N\u00fat B ch\u1eadm? K\u00e9o d\u00e0i thanh \u201cGhi\u201d cho N\u00fat B. Quan s\u00e1t \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111i\u1ec1u n\u00e0y \u0111\u1ebfn th\u1eddi gian ch\u1edd c\u1ee7a Kh\u00e1ch h\u00e0ng. \u0110i\u1ec1u n\u00e0y gi\u00fap thi\u1ebft k\u1ebf c\u00e1c c\u01a1 ch\u1ebf d\u1ef1 ph\u00f2ng.<\/p>\n

                X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng \u0111i quan tr\u1ecdng<\/h3>\n

                X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng \u0111i d\u00e0i nh\u1ea5t t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i. \u0110\u00e2y l\u00e0 \u0111\u01b0\u1eddng \u0111i quan tr\u1ecdng. B\u1ea5t k\u1ef3 \u0111\u1ed9 tr\u1ec5 n\u00e0o \u1edf \u0111\u00e2y \u0111\u1ec1u l\u00e0m ch\u1eadm to\u00e0n b\u1ed9 giao d\u1ecbch. T\u1eadp trung n\u1ed7 l\u1ef1c t\u1ed1i \u01b0u h\u00f3a v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng \u0111i n\u00e0y.<\/p>\n

                T\u01b0\u01a1ng quan s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean<\/h3>\n

                K\u1ebft h\u1ee3p s\u01a1 \u0111\u1ed3 th\u1eddi gian v\u1edbi d\u1eef li\u1ec7u s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean. N\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng hi\u1ec3n th\u1ecb ho\u1ea1t \u0111\u1ed9ng cao, h\u00e3y li\u00ean k\u1ebft n\u00f3 v\u1edbi c\u00e1c \u0111\u1ec9nh s\u1eed d\u1ee5ng CPU ho\u1eb7c b\u1ed9 nh\u1edb. \u0110i\u1ec1u n\u00e0y gi\u00fap trong l\u1eadp k\u1ebf ho\u1ea1ch kh\u1ea3 n\u0103ng.<\/p>\n

                C\u00e1c Th\u1ef1c h\u00e0nh T\u1ed1t nh\u1ea5t cho T\u00e0i li\u1ec7u \ud83d\udcdd<\/h2>\n

                \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 th\u1eddi gian v\u1eabn h\u1eefu \u00edch theo th\u1eddi gian, h\u00e3y tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn t\u00e0i li\u1ec7u sau.<\/p>\n

                  \n
                • K\u00fd hi\u1ec7u Nh\u1ea5t qu\u00e1n:<\/strong>S\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t k\u00fd hi\u1ec7u cho c\u00e1c tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng v\u00e0 s\u1ef1 ki\u1ec7n tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c s\u01a1 \u0111\u1ed3 trong d\u1ef1 \u00e1n.<\/li>\n
                • Qu\u1ea3n l\u00fd Phi\u00ean b\u1ea3n:<\/strong>C\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 m\u1ed7i khi logic \u0111\u1ed3ng th\u1eddi thay \u0111\u1ed5i. Xem n\u00f3 nh\u01b0 t\u00e0i li\u1ec7u m\u00e3 ngu\u1ed3n.<\/li>\n
                • Ch\u00fa th\u00edch R\u00f5 r\u00e0ng:<\/strong>Bao g\u1ed3m ch\u00fa th\u00edch gi\u1ea3i th\u00edch t\u1ea5t c\u1ea3 c\u00e1c k\u00fd hi\u1ec7u, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c k\u00fd hi\u1ec7u t\u00f9y ch\u1ec9nh cho kh\u00f3a ho\u1eb7c l\u1ed7i.<\/li>\n
                • Ghi ch\u00fa B\u1ed1i c\u1ea3nh:<\/strong>Th\u00eam c\u00e1c h\u1ed9p v\u0103n b\u1ea3n \u0111\u1ec3 gi\u1ea3i th\u00edch logic ph\u1ee9c t\u1ea1p m\u00e0 kh\u00f4ng th\u1ec3 hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng \u0111\u1ed3 h\u1ecda.<\/li>\n<\/ul>\n

                  So s\u00e1nh C\u00e1c Chi\u1ebfn l\u01b0\u1ee3c \u0110\u1ed3ng th\u1eddi \ud83d\udcca<\/h2>\n

                  \u0110\u1ec3 l\u00e0m r\u00f5 h\u01a1n t\u00ednh h\u1eefu d\u1ee5ng c\u1ee7a s\u01a1 \u0111\u1ed3 th\u1eddi gian, so s\u00e1nh c\u00e1c chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ed3ng th\u1eddi kh\u00e1c nhau b\u1eb1ng b\u1ea3ng bi\u1ec3u. \u0110i\u1ec1u n\u00e0y gi\u00fap trong vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf.<\/p>\n\n\n\n\n\n\n\n\n
                  Chi\u1ebfn l\u01b0\u1ee3c<\/th>\nHi\u1ec7n di\u1ec7n S\u01a1 \u0111\u1ed3 Th\u1eddi gian<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n
                  B\u1ed9 ph\u1eadn \u1ed1ng d\u1eabn<\/td>\nC\u00e1c thanh ch\u1ed3ng l\u1ea5n tr\u00ean c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng tu\u1ea7n t\u1ef1<\/td>\nT\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd cao<\/td>\nQu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i ph\u1ee9c t\u1ea1p<\/td>\n<\/tr>\n
                  Chia-T\u1ed5ng h\u1ee3p<\/td>\nPh\u00e2n t\u00e1n r\u1ed9ng theo chi\u1ec1u ngang r\u1ed3i h\u1ee3p nh\u1ea5t<\/td>\nL\u00e0m \u0111\u01a1n gi\u1ea3n h\u00f3a c\u00f4ng vi\u1ec7c song song<\/td>\n\u0110\u1ed9 tr\u1ec5 h\u1ee3p nh\u1ea5t c\u00f3 th\u1ec3 cao<\/td>\n<\/tr>\n
                  D\u1ef1a tr\u00ean H\u00e0ng \u0111\u1ee3i<\/td>\nTh\u1eddi gian ch\u1edd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng kho\u1ea3ng tr\u1ed1ng<\/td>\nT\u00e1ch r\u1eddi c\u00e1c th\u00e0nh ph\u1ea7n<\/td>\n\u0110\u1ed9 tr\u1ec5 th\u00eam do h\u00e0ng \u0111\u1ee3i<\/td>\n<\/tr>\n
                  B\u01b0\u1edbc Kh\u00f3a<\/td>\nC\u00e1c \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9<\/td>\nTh\u1eddi gian d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c<\/td>\nT\u00ednh linh ho\u1ea1t th\u1ea5p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                  B\u1eb1ng c\u00e1ch \u00e1nh x\u1ea1 c\u00e1c m\u1eabu n\u00e0y l\u00ean s\u01a1 \u0111\u1ed3 th\u1eddi gian, c\u00e1c th\u1ecfa hi\u1ec7p tr\u1edf n\u00ean r\u00f5 r\u00e0ng v\u1ec1 m\u1eb7t tr\u1ef1c quan. Bi\u1ec3u di\u1ec5n tr\u1ef1c quan th\u01b0\u1eddng ph\u00e1t hi\u1ec7n ra nh\u1eefng v\u1ea5n \u0111\u1ec1 m\u00e0 m\u00f4 t\u1ea3 v\u0103n b\u1ea3n th\u01b0\u1eddng b\u1ecf s\u00f3t.<\/p>\n

                  T\u00edch h\u1ee3p v\u1edbi thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \ud83c\udfd7\ufe0f<\/h2>\n

                  S\u01a1 \u0111\u1ed3 th\u1eddi gian kh\u00f4ng n\u00ean t\u1ed3n t\u1ea1i m\u1ed9t c\u00e1ch t\u00e1ch bi\u1ec7t. Ch\u00fang ph\u1ea3i t\u00edch h\u1ee3p v\u1edbi c\u00e1c t\u00e0i li\u1ec7u thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng kh\u00e1c.<\/p>\n

                    \n
                  • S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i:<\/strong>S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u1ec3 x\u00e1c nh\u1eadn c\u00e1c chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i theo th\u1eddi gian.<\/li>\n
                  • S\u01a1 \u0111\u1ed3 ki\u1ebfn tr\u00fac:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng trong s\u01a1 \u0111\u1ed3 th\u1eddi gian ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n trong ki\u1ebfn tr\u00fac.<\/li>\n
                  • H\u1ee3p \u0111\u1ed3ng API:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c nh\u00e3n tin nh\u1eafn ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ecbnh ngh\u0129a API.<\/li>\n<\/ul>\n

                    Vi\u1ec7c t\u00edch h\u1ee3p n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n. N\u1ebfu s\u01a1 \u0111\u1ed3 th\u1eddi gian cho th\u1ea5y th\u1eddi gian ph\u1ea3n h\u1ed3i l\u00e0 100ms, nh\u01b0ng h\u1ee3p \u0111\u1ed3ng API cho ph\u00e9p 500ms, th\u00ec s\u1ebd c\u00f3 s\u1ef1 ch\u00eanh l\u1ec7ch c\u1ea7n gi\u1ea3i quy\u1ebft.<\/p>\n

                    Tinh ch\u1ec9nh m\u00f4 h\u00ecnh th\u00f4ng qua l\u1eb7p l\u1ea1i \ud83d\udd04<\/h2>\n

                    M\u00f4 h\u00ecnh h\u00f3a hi\u1ebfm khi l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 m\u1ed9t l\u1ea7n. \u0110\u00f3 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh l\u1eb7p l\u1ea1i. Khi h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n, s\u01a1 \u0111\u1ed3 th\u1eddi gian c\u0169ng ph\u1ea3i ph\u00e1t tri\u1ec3n theo.<\/p>\n

                    L\u1ea7n l\u1eb7p 1: Lu\u1ed3ng c\u1ea5p cao<\/strong><\/p>\n

                    B\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh v\u00e0 c\u00e1c khung th\u1eddi gian chung. X\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a t\u01b0\u01a1ng t\u00e1c.<\/p>\n

                    L\u1ea7n l\u1eb7p 2: Th\u1eddi gian chi ti\u1ebft<\/strong><\/p>\n

                    Th\u00eam c\u00e1c kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3 v\u00e0 \u01b0\u1edbc t\u00ednh \u0111\u1ed9 tr\u1ec5. Tinh ch\u1ec9nh c\u00e1c thanh tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n

                    L\u1ea7n l\u1eb7p 3: Tr\u01b0\u1eddng h\u1ee3p bi\u00ean<\/strong><\/p>\n

                    M\u00f4 h\u00ecnh h\u00f3a c\u00e1c t\u00ecnh hu\u1ed1ng l\u1ed7i. S\u01a1 \u0111\u1ed3 s\u1ebd tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o khi m\u1ed9t n\u00fat kh\u00f4ng th\u1ec3 truy c\u1eadp? \u0110i\u1ec1u n\u00e0y chu\u1ea9n b\u1ecb cho \u0111\u1ed9i ng\u0169 x\u1eed l\u00fd l\u1ed7i.<\/p>\n

                    L\u1ea7n l\u1eb7p 4: T\u1ed1i \u01b0u h\u00f3a<\/strong><\/p>\n

                    Sau khi tri\u1ec3n khai c\u00e1c thay \u0111\u1ed5i, c\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 \u0111\u1ec3 ph\u1ea3n \u00e1nh th\u1ef1c t\u1ebf m\u1edbi. So s\u00e1nh s\u01a1 \u0111\u1ed3 c\u0169 v\u00e0 m\u1edbi \u0111\u1ec3 \u0111o l\u01b0\u1eddng m\u1ee9c \u0111\u1ed9 c\u1ea3i thi\u1ec7n.<\/p>\n

                    K\u1ebft lu\u1eadn v\u1ec1 hi\u1ec7u qu\u1ea3 m\u00f4 h\u00ecnh h\u00f3a \u2705<\/h2>\n

                    M\u00f4 h\u00ecnh h\u00f3a t\u00ednh \u0111\u1ed3ng th\u1eddi b\u1eb1ng s\u01a1 \u0111\u1ed3 th\u1eddi gian cung c\u1ea5p m\u1ed9t khung v\u1eefng ch\u1eafc \u0111\u1ec3 hi\u1ec3u h\u00e0nh vi h\u1ec7 th\u1ed1ng. N\u00f3 v\u01b0\u1ee3t ra ngo\u00e0i c\u00e1c kh\u00e1i ni\u1ec7m tr\u1eebu t\u01b0\u1ee3ng v\u00e0 \u0111\u1eb7t thi\u1ebft k\u1ebf v\u00e0o th\u1eddi gian c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng. B\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c s\u1ef1 ki\u1ec7n, c\u00e1c \u0111\u1ed9i nh\u00f3m c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ngh\u1ebdn, ng\u0103n ng\u1eeba c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ea1nh tranh v\u00e0 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean.<\/p>\n

                    Quy tr\u00ecnh n\u00e0y \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ef7 lu\u1eadt v\u00e0 ch\u00fa \u00fd \u0111\u1ebfn chi ti\u1ebft. Tuy nhi\u00ean, ph\u1ea7n th\u01b0\u1edfng l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 kh\u1ea3 n\u0103ng d\u1ef1 \u0111o\u00e1n cao v\u00e0 v\u1eefng ch\u1eafc h\u01a1n. D\u00f9 \u0111ang thi\u1ebft k\u1ebf m\u1ed9t microservice \u0111\u01a1n gi\u1ea3n hay m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u ph\u00e2n t\u00e1n ph\u1ee9c t\u1ea1p, s\u01a1 \u0111\u1ed3 th\u1eddi gian v\u1eabn l\u00e0 c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu. N\u00f3 n\u1ed1i li\u1ec1n kho\u1ea3ng c\u00e1ch gi\u1eefa lu\u1ed3ng logic v\u00e0 th\u1ef1c t\u1ebf v\u1ec1 th\u1eddi gian.<\/p>\n

                    Khi t\u00e0i li\u1ec7u h\u00f3a t\u00ednh \u0111\u1ed3ng th\u1eddi, h\u00e3y \u01b0u ti\u00ean s\u1ef1 r\u00f5 r\u00e0ng. S\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u nh\u1ea5t qu\u00e1n, nh\u00e3n ch\u00ednh x\u00e1c v\u00e0 c\u00e1c \u01b0\u1edbc t\u00ednh th\u1eddi gian th\u1ef1c t\u1ebf. Xem s\u01a1 \u0111\u1ed3 nh\u01b0 m\u1ed9t t\u00e0i li\u1ec7u s\u1ed1ng, lu\u00f4n thay \u0111\u1ed5i theo m\u00e3 ngu\u1ed3n. L\u00e0m nh\u01b0 v\u1eady, b\u1ea1n \u0111\u1ea3m b\u1ea3o r\u1eb1ng thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng lu\u00f4n ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u v\u1eadn h\u00e0nh trong su\u1ed1t v\u00f2ng \u0111\u1eddi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

                    H\u00e3y nh\u1edb r\u1eb1ng t\u00ednh \u0111\u1ed3ng th\u1eddi kh\u00f4ng ch\u1ec9 li\u00ean quan \u0111\u1ebfn t\u1ed1c \u0111\u1ed9; m\u00e0 c\u00f2n li\u00ean quan \u0111\u1ebfn th\u1ee9 t\u1ef1 v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a. S\u01a1 \u0111\u1ed3 th\u1eddi gian l\u00e0 b\u1ea3n \u0111\u1ed3 d\u1eabn \u0111\u01b0\u1eddng cho b\u1ea1n xuy\u00ean su\u1ed1t s\u1ef1 ph\u1ee9c t\u1ea1p. H\u00e3y s\u1eed d\u1ee5ng n\u00f3 m\u1ed9t c\u00e1ch kh\u00f4n ngoan \u0111\u1ec3 v\u01b0\u1ee3t qua nh\u1eefng th\u00e1ch th\u1ee9c trong ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n","protected":false},"excerpt":{"rendered":"

                    T\u00ednh \u0111\u1ed3ng th\u1eddi trong ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng \u0111\u1ea1i di\u1ec7n cho vi\u1ec7c th\u1ef1c thi \u0111\u1ed3ng th\u1eddi nhi\u1ec1u ti\u1ebfn tr\u00ecnh. \u0110\u00e2y l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n trong c\u00e1c h\u1ec7 th\u1ed1ng…<\/p>\n","protected":false},"author":1,"featured_media":1806,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"H\u01b0\u1edbng d\u1eabn m\u00f4 h\u00ecnh h\u00f3a t\u00ednh \u0111\u1ed3ng th\u1eddi b\u1eb1ng s\u01a1 \u0111\u1ed3 th\u1eddi gian \ud83d\udcca","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch tr\u1ef1c quan h\u00f3a h\u00e0nh vi h\u1ec7 th\u1ed1ng. T\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 s\u01a1 \u0111\u1ed3 th\u1eddi gian cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed3ng th\u1eddi. X\u00e1c \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ea1nh tranh v\u00e0 \u0111i\u1ec3m ngh\u1ebdn.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[60],"tags":[87,92],"class_list":["post-1805","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 m\u00f4 h\u00ecnh h\u00f3a t\u00ednh \u0111\u1ed3ng th\u1eddi b\u1eb1ng s\u01a1 \u0111\u1ed3 th\u1eddi gian \ud83d\udcca<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch tr\u1ef1c quan h\u00f3a h\u00e0nh vi h\u1ec7 th\u1ed1ng. T\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 s\u01a1 \u0111\u1ed3 th\u1eddi gian cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed3ng th\u1eddi. 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