{"id":408,"date":"2026-03-27T05:28:52","date_gmt":"2026-03-27T05:28:52","guid":{"rendered":"https:\/\/www.hi-posts.com\/vn\/understanding-control-flow-object-nodes-interaction-overviews\/"},"modified":"2026-03-26T01:32:16","modified_gmt":"2026-03-26T01:32:16","slug":"understanding-control-flow-object-nodes-interaction-overviews","status":"publish","type":"post","link":"https:\/\/www.hi-posts.com\/vn\/understanding-control-flow-object-nodes-interaction-overviews\/","title":{"rendered":"Kh\u00e1m ph\u00e1 s\u00e2u: Hi\u1ec3u r\u00f5 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng trong t\u1ed5ng quan t\u01b0\u01a1ng t\u00e1c"},"content":{"rendered":"

Bi\u1ec3u \u0111\u1ed3 t\u1ed5ng quan t\u01b0\u01a1ng t\u00e1c \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u1ea7u n\u1ed1i quan tr\u1ecdng gi\u1eefa lu\u1ed3ng ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea5p \u0111\u1ed9 cao v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c chu\u1ed7i chi ti\u1ebft. Ch\u00fang cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 tr\u1ef1c quan h\u00f3a vi\u1ec7c \u0111i\u1ec1u ph\u1ed1i c\u00e1c ho\u1ea1t \u0111\u1ed9ng con ho\u1eb7c c\u00e1c \u0111o\u1ea1n t\u01b0\u01a1ng t\u00e1c trong m\u1ed9t quy tr\u00ecnh h\u1ec7 th\u1ed1ng l\u1edbn h\u01a1n. Khi thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, s\u1ef1 r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n c\u00f9ng v\u1edbi c\u00e1c t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c c\u01a1 ch\u1ebf c\u1ee5 th\u1ec3 c\u1ee7a lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng, \u0111\u1ea3m b\u1ea3o m\u00f4 h\u00ecnh h\u00f3a h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc m\u00e0 kh\u00f4ng g\u00e2y nh\u1ea7m l\u1eabn.<\/p>\n

Bi\u1ec3u \u0111\u1ed3 t\u1ed5ng quan t\u01b0\u01a1ng t\u00e1c kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c h\u1ed9p v\u00e0 m\u0169i t\u00ean; n\u00f3 l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n ch\u00ednh x\u00e1c c\u1ee7a logic v\u00e0 tr\u1ea1ng th\u00e1i. Vi\u1ec7c hi\u1ec3u sai c\u00e1ch \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c chuy\u1ec3n giao gi\u1eefa c\u00e1c n\u00fat ho\u1eb7c c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ec7m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng l\u1ed7i ki\u1ebfn tr\u00fac nghi\u00eam tr\u1ecdng. Ch\u00fang ta s\u1ebd xem x\u00e9t ng\u1eef ngh\u0129a c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y, s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a ch\u00fang v\u00e0 c\u00e1c m\u1eabu h\u00ecnh x\u00e1c \u0111\u1ecbnh h\u00e0nh vi h\u1ec7 th\u1ed1ng \u1ed5n \u0111\u1ecbnh.<\/p>\n

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\"Infographic<\/figure>\n<\/div>\n

\ud83d\udd17 C\u01a1 ch\u1ebf c\u1ee7a Lu\u1ed3ng \u0110i\u1ec1u khi\u1ec3n<\/h2>\n

Lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n bi\u1ec3u th\u1ecb tr\u00ecnh t\u1ef1 c\u00e1c h\u00e0nh \u0111\u1ed9ng ho\u1eb7c \u0111\u01b0\u1eddng \u0111i th\u1ef1c thi. Trong ng\u1eef c\u1ea3nh c\u1ee7a t\u1ed5ng quan t\u01b0\u01a1ng t\u00e1c, n\u00f3 quy \u0111\u1ecbnh ho\u1ea1t \u0111\u1ed9ng con ho\u1eb7c \u0111o\u1ea1n t\u01b0\u01a1ng t\u00e1c n\u00e0o s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c thi ti\u1ebfp theo. \u0110i\u1ec1u n\u00e0y kh\u00e1c bi\u1ec7t v\u1edbi vi\u1ec7c di chuy\u1ec3n d\u1eef li\u1ec7u; n\u00f3 li\u00ean quan \u0111\u1ebfnkhi n\u00e0o<\/em>\u0111i\u1ec1u g\u00ec x\u1ea3y ra, ch\u1ee9 kh\u00f4ng ph\u1ea3ic\u00e1i g\u00ec<\/em>d\u1eef li\u1ec7u tham gia.<\/p>\n

C\u00e1c N\u00fat Kh\u1edfi \u0111\u1ea7u v\u00e0 K\u1ebft th\u00fac<\/h3>\n
    \n
  • N\u00fat Kh\u1edfi \u0111\u1ea7u:<\/strong>M\u1ecdi bi\u1ec3u \u0111\u1ed3 t\u1ed5ng quan t\u01b0\u01a1ng t\u00e1c \u0111\u1ec1u y\u00eau c\u1ea7u ch\u00ednh x\u00e1c m\u1ed9t n\u00fat kh\u1edfi \u0111\u1ea7u. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eb7c. N\u00f3 \u0111\u00e1nh d\u1ea5u \u0111i\u1ec3m v\u00e0o n\u01a1i t\u01b0\u01a1ng t\u00e1c b\u1eaft \u0111\u1ea7u.<\/li>\n
  • N\u00fat K\u1ebft th\u00fac:<\/strong>Bi\u1ec3u \u0111\u1ed3 ph\u1ea3i k\u1ebft th\u00fac t\u1ea1i m\u1ed9t n\u00fat k\u1ebft th\u00fac. \u0110\u00e2y l\u00e0 m\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eb7c c\u00f3 m\u1ed9t v\u00f2ng tr\u00f2n bao quanh. N\u00f3 bi\u1ec3u th\u1ecb s\u1ef1 ho\u00e0n th\u00e0nh th\u00e0nh c\u00f4ng c\u1ee7a chu\u1ed7i t\u01b0\u01a1ng t\u00e1c.<\/li>\n<\/ul>\n

    C\u1ea7n l\u01b0u \u00fd r\u1eb1ng m\u1eb7c d\u00f9 nhi\u1ec1u n\u00fat k\u1ebft th\u00fac \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u1ec3 bi\u1ec3u th\u1ecb c\u00e1c k\u1ebft qu\u1ea3 kh\u00e1c nhau (th\u00e0nh c\u00f4ng so v\u1edbi th\u1ea5t b\u1ea1i), nh\u01b0ng n\u00fat kh\u1edfi \u0111\u1ea7u v\u1eabn ph\u1ea3i duy nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tr\u1ea1ng th\u00e1i b\u1eaft \u0111\u1ea7u r\u00f5 r\u00e0ng.<\/p>\n

    C\u00e1c N\u00fat Quy\u1ebft \u0111\u1ecbnh v\u00e0 H\u1ee3p nh\u1ea5t<\/h3>\n

    Ph\u00e2n nh\u00e1nh logic l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a m\u1ecdi lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n. Quy chu\u1ea9n UML cung c\u1ea5p c\u00e1c n\u00fat c\u1ee5 th\u1ec3 \u0111\u1ec3 x\u1eed l\u00fd \u0111i\u1ec1u n\u00e0y:<\/p>\n

      \n
    • N\u00fat Quy\u1ebft \u0111\u1ecbnh:<\/strong>\u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh thoi. N\u00fat n\u00e0y chia lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n th\u00e0nh nhi\u1ec1u \u0111\u01b0\u1eddng \u0111i d\u1ef1a tr\u00ean c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7. M\u1ed7i c\u1ea1nh \u0111i ra ph\u1ea3i c\u00f3 m\u1ed9t \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 (v\u00ed d\u1ee5,[\u0111i\u1ec1u ki\u1ec7n = \u0111\u00fang]<\/code>). N\u1ebfu kh\u00f4ng ch\u1ec9 \u0111\u1ecbnh \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7, lu\u1ed3ng \u0111\u01b0\u1ee3c gi\u1ea3 \u0111\u1ecbnh l\u00e0 kh\u00f4ng \u0111i\u1ec1u ki\u1ec7n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00f4ng r\u00f5 r\u00e0ng.<\/li>\n
    • N\u00fat H\u1ee3p nh\u1ea5t:<\/strong>C\u0169ng c\u00f3 h\u00ecnh d\u1ea1ng h\u00ecnh thoi, nh\u01b0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 k\u1ebft h\u1ee3p nhi\u1ec1u \u0111\u01b0\u1eddng \u0111i \u0111i v\u00e0o th\u00e0nh m\u1ed9t \u0111\u01b0\u1eddng \u0111i \u0111i ra duy nh\u1ea5t. N\u00f3 kh\u00f4ng \u0111\u00e1nh gi\u00e1 c\u00e1c \u0111i\u1ec1u ki\u1ec7n; n\u00f3 ch\u1ec9 \u0111\u01a1n gi\u1ea3n ch\u1ea5p nh\u1eadn b\u1ea5t k\u1ef3 token \u0111i\u1ec1u khi\u1ec3n n\u00e0o \u0111i v\u00e0o v\u00e0 chuy\u1ec3n n\u00f3 \u0111i ti\u1ebfp.<\/li>\n<\/ul>\n

      Khi thi\u1ebft k\u1ebf c\u00e1c quy tr\u00ecnh l\u00e0m vi\u1ec7c ph\u1ee9c t\u1ea1p, h\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c n\u00fat quy\u1ebft \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng v\u1edbi c\u00e1c n\u00fat h\u1ee3p nh\u1ea5t. M\u1ed9t quy\u1ebft \u0111\u1ecbnh chia lu\u1ed3ng th\u00e0nh ba \u0111\u01b0\u1eddng \u0111i l\u00fd t\u01b0\u1edfng n\u00ean c\u00f3 ba c\u1ea1nh \u0111i v\u00e0o m\u1ed9t n\u00fat h\u1ee3p nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c nh\u00e1nh logic \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u00ednh \u0111\u1ebfn.<\/p>\n

      C\u00e1c C\u1ea1nh Ho\u1ea1t \u0111\u1ed9ng<\/h3>\n

      C\u00e1c c\u1ea1nh k\u1ebft n\u1ed1i c\u00e1c n\u00fat n\u00e0y. Trong lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n, c\u00e1c c\u1ea1nh n\u00e0y bi\u1ec3u th\u1ecb vi\u1ec7c chuy\u1ec3n giao c\u00e1c token \u0111i\u1ec1u khi\u1ec3n. M\u1ed9t c\u1ea1nh b\u1eaft \u0111\u1ea7u t\u1eeb ch\u00e2n ra c\u1ee7a m\u1ed9t n\u00fat v\u00e0 k\u1ebft th\u00fac t\u1ea1i ch\u00e2n v\u00e0o c\u1ee7a m\u1ed9t n\u00fat kh\u00e1c. \u0110\u1ea7u m\u0169i t\u00ean ch\u1ec9 h\u01b0\u1edbng c\u1ee7a lu\u1ed3ng. Kh\u00e1c v\u1edbi lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng, c\u00e1c c\u1ea1nh \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng mang d\u1eef li\u1ec7u; ch\u00fang bi\u1ec3u th\u1ecb s\u1ef1 s\u1eb5n s\u00e0ng.<\/p>\n

      \ud83d\udce6 C\u00e1c N\u00fat \u0110\u1ed1i t\u01b0\u1ee3ng v\u00e0 Ng\u1eef ngh\u0129a D\u1eef li\u1ec7u<\/h2>\n

      Trong khi lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n qu\u1ea3n l\u00fd tr\u00ecnh t\u1ef1, c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng qu\u1ea3n l\u00fd d\u1eef li\u1ec7u. Trong bi\u1ec3u \u0111\u1ed3 t\u1ed5ng quan t\u01b0\u01a1ng t\u00e1c, c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng bi\u1ec3u th\u1ecb s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a th\u00f4ng tin ho\u1eb7c c\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i gi\u1eefa c\u00e1c \u0111o\u1ea1n t\u01b0\u01a1ng t\u00e1c. Ch\u00fang r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3n th\u1ecb c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 v\u00e0 t\u1ea1o ra trong to\u00e0n b\u1ed9 quy tr\u00ecnh l\u00e0m vi\u1ec7c.<\/p>\n

      C\u00e1c Lo\u1ea1i N\u00fat \u0110\u1ed1i t\u01b0\u1ee3ng<\/h3>\n

      C\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o \u00fd \u0111\u1ecbnh m\u00f4 h\u00ecnh h\u00f3a:<\/p>\n

        \n
      • \u0110i\u1ec3m \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong> M\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt nh\u1ecf g\u1eafn v\u00e0o bi\u00ean c\u1ee7a ho\u1ea1t \u0111\u1ed9ng. N\u00f3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m ti\u1ebfp nh\u1eadn cho lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li>\n
      • N\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng (B\u1ed9 \u0111\u1ec7m):<\/strong> M\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 c\u00e1c g\u00f3c bo tr\u00f2n. \u0110\u00e2y bi\u1ec3u th\u1ecb m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng. N\u00f3 c\u00f3 th\u1ec3 \u0111\u1ec7m nhi\u1ec1u phi\u00ean b\u1ea3n c\u1ee7a m\u1ed9t ki\u1ec3u d\u1eef li\u1ec7u, cho ph\u00e9p x\u1eed l\u00fd b\u1ea5t \u0111\u1ed3ng b\u1ed9.<\/li>\n<\/ul>\n

        S\u1ef1 ph\u00e2n bi\u1ec7t gi\u1eefa \u0111i\u1ec3m v\u00e0 b\u1ed9 \u0111\u1ec7m l\u00e0 r\u1ea5t quan tr\u1ecdng. C\u00e1c \u0111i\u1ec3m mang t\u00ednh t\u1ea1m th\u1eddi; ch\u00fang ch\u1ec9 t\u1ed3n t\u1ea1i trong su\u1ed1t th\u1eddi gian th\u1ef1c thi h\u00e0nh \u0111\u1ed9ng. C\u00e1c b\u1ed9 \u0111\u1ec7m t\u1ed3n t\u1ea1i l\u00e2u d\u00e0i v\u00e0 c\u00f3 th\u1ec3 ch\u1ee9a nhi\u1ec1u m\u1ee5c, cho ph\u00e9p x\u1ebfp h\u00e0ng.<\/p>\n

        C\u1ea1nh lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng<\/h3>\n

        C\u00e1c c\u1ea1nh lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng k\u1ebft n\u1ed1i c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c c\u00e1c \u0111i\u1ec3m. Ch\u00fang v\u1eadn chuy\u1ec3n c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng d\u1eef li\u1ec7u t\u1eeb ng\u01b0\u1eddi s\u1ea3n xu\u1ea5t \u0111\u1ebfn ng\u01b0\u1eddi ti\u00eau th\u1ee5. H\u01b0\u1edbng m\u0169i t\u00ean ch\u1ec9 ra lu\u1ed3ng d\u1eef li\u1ec7u. Kh\u00e1c v\u1edbi c\u00e1c c\u1ea1nh \u0111i\u1ec1u khi\u1ec3n, c\u00e1c c\u1ea1nh \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00f4ng t\u1ef1 k\u00edch ho\u1ea1t c\u00e1c h\u00e0nh \u0111\u1ed9ng; ch\u00fang cung c\u1ea5p c\u00e1c \u0111\u1ea7u v\u00e0o c\u1ea7n thi\u1ebft \u0111\u1ec3 m\u1ed9t h\u00e0nh \u0111\u1ed9ng \u0111\u01b0\u1ee3c th\u1ef1c thi.<\/p>\n

        H\u00e3y xem x\u00e9t m\u1ed9t k\u1ecbch b\u1ea3n n\u01a1i m\u1ed9t y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd. Lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 di chuy\u1ec3n t\u1eeb Nh\u1eadn y\u00eau c\u1ea7u<\/em> \u0111\u1ebfn X\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o<\/em>. Tuy nhi\u00ean, lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng l\u1ea1i mang theo Y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng<\/em> t\u1eeb n\u00fat Nh\u1eadn<\/em> \u0111\u1ebfn n\u00fat X\u00e1c th\u1ef1c<\/em>. C\u1ea3 hai lu\u1ed3ng \u0111\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c b\u1ee9c tranh to\u00e0n c\u1ea3nh.<\/p>\n

        \u2696\ufe0f Lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n so v\u1edbi Lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng<\/h2>\n

        S\u1ef1 nh\u1ea7m l\u1eabn th\u01b0\u1eddng x\u1ea3y ra gi\u1eefa lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng. M\u1eb7c d\u00f9 ch\u00fang th\u01b0\u1eddng ch\u1ea1y song song, m\u1ee5c \u0111\u00edch c\u1ee7a ch\u00fang l\u1ea1i kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y l\u00e0m r\u00f5 c\u00e1c s\u1ef1 ph\u00e2n bi\u1ec7t.<\/p>\n\n\n\n\n\n\n\n\n\n
        \u0110\u1eb7c \u0111i\u1ec3m<\/th>\nLu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n<\/th>\nLu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng<\/th>\n<\/tr>\n<\/thead>\n
        M\u1ee5c \u0111\u00edch ch\u00ednh<\/strong><\/td>\nS\u1eafp x\u1ebfp th\u1ee9 t\u1ef1 th\u1ef1c thi<\/td>\nV\u1eadn chuy\u1ec3n d\u1eef li\u1ec7u<\/td>\n<\/tr>\n
        K\u00edch ho\u1ea1t<\/strong><\/td>\nK\u00edch ho\u1ea1t c\u00e1c h\u00e0nh \u0111\u1ed9ng<\/td>\nCung c\u1ea5p d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o<\/td>\n<\/tr>\n
        Lo\u1ea1i n\u00fat<\/strong><\/td>\nKh\u1edfi \u0111\u1ea7u, K\u1ebft th\u00fac, Quy\u1ebft \u0111\u1ecbnh<\/td>\nN\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng, Ch\u1ed1t<\/td>\n<\/tr>\n
        K\u00fd hi\u1ec7u<\/strong><\/td>\nM\u0169i t\u00ean li\u1ec1n n\u00e9t<\/td>\nM\u0169i t\u00ean n\u00e9t \u0111\u1ee9t ho\u1eb7c li\u1ec1n n\u00e9t (c\u00f3 nh\u00e3n d\u1eef li\u1ec7u)<\/td>\n<\/tr>\n
        \u0110\u1ed3ng th\u1eddi<\/strong><\/td>\nTuy\u1ebfn t\u00ednh theo m\u1eb7c \u0111\u1ecbnh<\/td>\nC\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ec7m\/ch\u1ea1y song song<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y gi\u00fap ng\u0103n ng\u1eeba c\u00e1c l\u1ed7i m\u00f4 h\u00ecnh h\u00f3a. V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n v\u1ebd m\u1ed9t lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng \u1edf v\u1ecb tr\u00ed m\u00e0 m\u1ed9t token \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c mong \u0111\u1ee3i, h\u00e0nh \u0111\u1ed9ng s\u1ebd kh\u00f4ng th\u1ef1c thi v\u00ec thi\u1ebfu t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu b\u1ea1n g\u1eedi t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n m\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ed1i t\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft, h\u00e0nh \u0111\u1ed9ng c\u00f3 th\u1ec3 th\u1ef1c thi nh\u01b0ng s\u1ebd th\u1ea5t b\u1ea1i do thi\u1ebfu \u0111\u1ea7u v\u00e0o.<\/p>\n

        \ud83d\udd04 T\u01b0\u01a1ng t\u00e1c gi\u1eefa \u0110i\u1ec1u khi\u1ec3n v\u00e0 D\u1eef li\u1ec7u<\/h2>\n

        Trong m\u1ed9t T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c v\u1eefng ch\u1eafc, lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111an xen ch\u1eb7t ch\u1ebd. M\u1ed9t n\u00fat h\u00e0nh \u0111\u1ed9ng y\u00eau c\u1ea7u c\u1ea3 token \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 b\u1eaft \u0111\u1ea7u v\u00e0 token \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng. Y\u00eau c\u1ea7u k\u00e9p n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng kh\u00f4ng x\u1eed l\u00fd d\u1eef li\u1ec7u qu\u00e1 s\u1edbm ho\u1eb7c \u0111\u1ec3 d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd.<\/p>\n

        N\u00fat T\u00e1ch v\u00e0 N\u00fat H\u1ee3p<\/h3>\n

        C\u00e1c quy tr\u00ecnh l\u00e0m vi\u1ec7c ph\u1ee9c t\u1ea1p th\u01b0\u1eddng y\u00eau c\u1ea7u t\u00ednh song song. UML cung c\u1ea5p c\u00e1c n\u00fat t\u00e1ch v\u00e0 n\u00fat h\u1ee3p cho m\u1ee5c \u0111\u00edch n\u00e0y:<\/p>\n

          \n
        • N\u00fat T\u00e1ch:<\/strong> M\u1ed9t thanh ngang d\u00e0y. N\u00f3 chia m\u1ed9t lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n \u0111i v\u00e0o th\u00e0nh nhi\u1ec1u lu\u1ed3ng \u0111i ra. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p nhi\u1ec1u ho\u1ea1t \u0111\u1ed9ng b\u1eaft \u0111\u1ea7u \u0111\u1ed3ng th\u1eddi.<\/li>\n
        • N\u00fat H\u1ee3p:<\/strong> C\u0169ng l\u00e0 m\u1ed9t thanh d\u00e0y. N\u00f3 ch\u1edd \u0111\u1ee3i t\u1ea5t c\u1ea3 c\u00e1c lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n \u0111i v\u00e0o \u0111\u1ebfn tr\u01b0\u1edbc khi ti\u1ebfp t\u1ee5c. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o s\u1ef1 \u0111\u1ed3ng b\u1ed9 h\u00f3a.<\/li>\n<\/ul>\n

          Khi s\u1eed d\u1ee5ng c\u00e1c n\u00fat t\u00e1ch v\u00e0 n\u00fat h\u1ee3p, lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ea3i \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd c\u1ea9n th\u1eadn. N\u1ebfu m\u1ed9t n\u00fat t\u00e1ch t\u1ea1o ra ba \u0111\u01b0\u1eddng song song, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ea1o ra trong m\u1ed9t \u0111\u01b0\u1eddng c\u00f3 th\u1ec3 c\u1ea7n thi\u1ebft cho n\u00fat h\u1ee3p. N\u1ebfu d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u00fang c\u00e1ch, n\u00fat h\u1ee3p s\u1ebd ch\u1edd v\u00f4 h\u1ea1n m\u1ed9t t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n ph\u1ee5 thu\u1ed9c v\u00e0o d\u1eef li\u1ec7u ch\u01b0a bao gi\u1edd \u0111\u01b0\u1ee3c t\u1ea1o ra.<\/p>\n

          X\u1eed l\u00fd Ngo\u1ea1i l\u1ec7<\/h3>\n

          C\u00e1c h\u1ec7 th\u1ed1ng th\u1ef1c t\u1ebf th\u01b0\u1eddng g\u1eb7p l\u1ed7i. T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c c\u1ea7n t\u00ednh \u0111\u1ebfn c\u00e1c \u0111\u01b0\u1eddng d\u1eabn th\u1ea5t b\u1ea1i. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c c\u1ea1nh ngo\u1ea1i l\u1ec7 ho\u1eb7c c\u00e1c \u0111\u01b0\u1eddng \u0111i\u1ec1u khi\u1ec3n c\u1ee5 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c n\u00fat x\u1eed l\u00fd l\u1ed7i.<\/p>\n

          Khi m\u1ed9t h\u00e0nh \u0111\u1ed9ng th\u1ea5t b\u1ea1i, n\u00f3 c\u00f3 th\u1ec3 g\u1eedi m\u1ed9t token \u0111i\u1ec1u khi\u1ec3n \u0111\u1ebfn tr\u00ecnh x\u1eed l\u00fd ngo\u1ea1i l\u1ec7 thay v\u00ec lu\u1ed3ng b\u00ecnh th\u01b0\u1eddng. C\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng li\u00ean k\u1ebft v\u1edbi tr\u1ea1ng th\u00e1i l\u1ed7i n\u00ean ch\u1ee9a m\u00e3 l\u1ed7i ho\u1eb7c th\u00f4ng tin ch\u1ea9n \u0111o\u00e1n. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng l\u1ed7i \u0111\u01b0\u1ee3c ghi l\u1ea1i v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng kh\u00f4i ph\u1ee5c.<\/p>\n

          \ud83d\udee0 Th\u1ef1c h\u00e0nh T\u1ed1t nh\u1ea5t cho M\u00f4 h\u00ecnh h\u00f3a<\/h2>\n

          \u0110\u1ec3 duy tr\u00ec t\u00ednh r\u00f5 r\u00e0ng v\u00e0 h\u1eefu \u00edch trong c\u00e1c bi\u1ec3u \u0111\u1ed3 c\u1ee7a b\u1ea1n, h\u00e3y tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc sau. C\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y gi\u00fap \u0111\u1ea3m b\u1ea3o r\u1eb1ng bi\u1ec3u \u0111\u1ed3 v\u1eabn l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1ee3p l\u1ec7 cho giao ti\u1ebfp v\u00e0 ph\u00e2n t\u00edch.<\/p>\n

            \n
          • Gi\u1ea3m thi\u1ec3u c\u00e1c \u0111\u01b0\u1eddng c\u1eaft nhau:<\/strong> S\u1eafp x\u1ebfp c\u00e1c n\u00fat \u0111\u1ec3 gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng c\u1ea1nh c\u1eaft nhau. \u0110i\u1ec1u n\u00e0y c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng \u0111\u1ecdc.<\/li>\n
          • S\u1eed d\u1ee5ng \u0110i\u1ec1u ki\u1ec7n B\u1ea3o v\u1ec7:<\/strong> Lu\u00f4n ch\u1ec9 \u0111\u1ecbnh c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 tr\u00ean c\u00e1c n\u00fat quy\u1ebft \u0111\u1ecbnh. S\u1ef1 m\u01a1 h\u1ed3 \u1edf \u0111\u00e2y d\u1eabn \u0111\u1ebfn c\u00e1c l\u1ed7i th\u1ef1c hi\u1ec7n.<\/li>\n
          • \u0110\u1eb7t t\u00ean Nh\u1ea5t qu\u00e1n:<\/strong> \u0110\u1eb7t t\u00ean r\u00f5 r\u00e0ng cho c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 ch\u1ed1t. S\u1eed d\u1ee5ng thu\u1eadt ng\u1eef chuy\u00ean ng\u00e0nh (v\u00ed d\u1ee5: “H\u00f3a \u0111\u01a1n\"<\/code>, Tr\u1ea1ng th\u00e1i \u0111\u01a1n h\u00e0ng<\/code>) thay v\u00ec c\u00e1c thu\u1eadt ng\u1eef chung chung nh\u01b0 “D\u1eef li\u1ec7u<\/code> ho\u1eb7c Th\u00f4ng tin<\/code>.<\/li>\n
          • Gi\u1edbi h\u1ea1n \u0111\u1ed9 s\u00e2u:<\/strong>Tr\u00e1nh l\u1ed3ng gh\u00e9p qu\u00e1 nhi\u1ec1u m\u1ea3nh t\u01b0\u01a1ng t\u00e1c trong m\u1ed9t n\u00fat \u0111\u01a1n l\u1ebb. H\u00e3y gi\u1eef t\u1ed5ng quan \u1edf m\u1ee9c \u0111\u1ed9 cao v\u00e0 chuy\u1ec3n giao chi ti\u1ebft cho c\u00e1c s\u01a1 \u0111\u1ed3 con.<\/li>\n
          • C\u00e2n b\u1eb1ng lu\u1ed3ng:<\/strong>\u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i nh\u00e1nh r\u1ebd (fork) \u0111\u1ec1u c\u00f3 m\u1ed9t \u0111i\u1ec3m h\u1ee3p (join) t\u01b0\u01a1ng \u1ee9ng. C\u00e1c lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n b\u1ecb c\u00f4 l\u1eadp c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng ch\u1ebft (deadlock) trong logic h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n

            \ud83e\udde9 C\u00e1c m\u1eabu n\u00e2ng cao v\u00e0 l\u01b0u \u00fd<\/h2>\n

            Khi h\u1ec7 th\u1ed1ng tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n, c\u00e1c m\u1eabu ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ee7. C\u00e1c k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a n\u00e2ng cao cho ph\u00e9p s\u1ef1 linh ho\u1ea1t l\u1edbn h\u01a1n.<\/p>\n

            L\u1ed3ng gh\u00e9p c\u00e1c m\u1ea3nh t\u01b0\u01a1ng t\u00e1c<\/h3>\n

            M\u1ed9t s\u01a1 \u0111\u1ed3 t\u1ed5ng quan t\u01b0\u01a1ng t\u00e1c c\u00f3 th\u1ec3 ch\u1ee9a c\u00e1c m\u1ea3nh t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong c\u00e1c s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1. Vi\u1ec7c l\u1ed3ng gh\u00e9p n\u00e0y cho ph\u00e9p c\u00f3 c\u00e1i nh\u00ecn \u0111a c\u1ea5p \u0111\u1ed9 v\u1ec1 h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 b\u00ean ngo\u00e0i qu\u1ea3n l\u00fd vi\u1ec7c \u0111i\u1ec1u ph\u1ed1i, trong khi c\u00e1c s\u01a1 \u0111\u1ed3 b\u00ean trong qu\u1ea3n l\u00fd vi\u1ec7c truy\u1ec1n tin nh\u1eafn.<\/p>\n

            Khi l\u1ed3ng gh\u00e9p, h\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a m\u1ea3nh b\u00ean trong kh\u1edbp v\u1edbi c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng trong t\u1ed5ng quan b\u00ean ngo\u00e0i. Vi\u1ec7c kh\u00f4ng kh\u1edbp c\u00e1c ki\u1ec3u d\u1eef li\u1ec7u gi\u1eefa c\u00e1c c\u1ea5p \u0111\u1ed9 l\u00e0 ngu\u1ed3n g\u1ed1c ph\u1ed5 bi\u1ebfn c\u1ee7a c\u00e1c v\u1ea5n \u0111\u1ec1 t\u00edch h\u1ee3p.<\/p>\n

            Truy\u1ec1n th\u00f4ng b\u1ea5t \u0111\u1ed3ng b\u1ed9<\/h3>\n

            M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng theo c\u01a1 ch\u1ebf b\u1ea5t \u0111\u1ed3ng b\u1ed9. Trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u00e0y, c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 h\u00e0ng \u0111\u1ee3i. M\u1ed9t lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t m\u1ed9t h\u00e0nh \u0111\u1ed9ng \u0111\u1ec3 \u0111\u1eb7t m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0o b\u1ed9 \u0111\u1ec7m, v\u00e0 m\u1ed9t lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n ri\u00eang bi\u1ec7t c\u00f3 th\u1ec3 l\u1ea5y n\u00f3 ra sau \u0111\u00f3. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u00e1ch r\u1eddi nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ng\u01b0\u1eddi ti\u00eau th\u1ee5.<\/p>\n

            Vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a \u0111i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng r\u00f5 r\u00e0ng. \u0110\u1eebng d\u1ef1a v\u00e0o vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u ng\u1ea7m \u0111\u1ecbnh. C\u00e1c n\u00fat r\u00f5 r\u00e0ng gi\u00fap c\u01a1 ch\u1ebf \u0111\u1ec7m tr\u1edf n\u00ean h\u1eefu h\u00ecnh v\u00e0 cho ph\u00e9p l\u1eadp k\u1ebf ho\u1ea1ch dung l\u01b0\u1ee3ng.<\/p>\n

            \ud83d\udd0d X\u00e1c th\u1ef1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n<\/h2>\n

            Sau khi m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng, n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c ki\u1ec3m tra t\u00ednh to\u00e0n v\u1eb9n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 m\u1eb7t logic.<\/p>\n

              \n
            • Kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn:<\/strong>\u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi n\u00fat \u0111\u1ec1u c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c t\u1eeb n\u00fat kh\u1edfi \u0111\u1ea7u. C\u00e1c n\u00fat kh\u00f4ng th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c cho th\u1ea5y m\u00e3 ch\u1ebft ho\u1eb7c logic ch\u1ebft.<\/li>\n
            • T\u00ednh s\u1ed1ng c\u00f2n (liveness):<\/strong>\u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi \u0111\u01b0\u1eddng d\u1eabn cu\u1ed1i c\u00f9ng \u0111\u1ec1u d\u1eabn \u0111\u1ebfn m\u1ed9t n\u00fat k\u1ebft th\u00fac. C\u00e1c v\u00f2ng l\u1eb7p v\u00f4 h\u1ea1n kh\u00f4ng c\u00f3 \u0111i\u1ec1u ki\u1ec7n tho\u00e1t n\u00ean \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng ho\u1eb7c tr\u00e1nh.<\/li>\n
            • T\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u:<\/strong>Ki\u1ec3m tra xem c\u00e1c ki\u1ec3u d\u1eef li\u1ec7u c\u00f3 kh\u1edbp nhau t\u1ea1i c\u00e1c \u0111i\u1ec3m k\u1ebft n\u1ed1i hay kh\u00f4ng. M\u1ed9t n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng s\u1ed1 nguy\u00ean kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi ch\u00e2n \u0111\u1ea7u v\u00e0o chu\u1ed7i n\u1ebfu kh\u00f4ng c\u00f3 h\u00e0nh \u0111\u1ed9ng chuy\u1ec3n \u0111\u1ed5i.<\/li>\n
            • T\u00ednh \u0111\u1ea7y \u0111\u1ee7:<\/strong>X\u00e1c minh r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u v\u00e0o c\u1ea7n thi\u1ebft cho c\u00e1c h\u00e0nh \u0111\u1ed9ng \u0111\u1ec1u \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi c\u00e1c lu\u1ed3ng \u0111\u1ed1i t\u01b0\u1ee3ng. Thi\u1ebfu \u0111\u1ea7u v\u00e0o s\u1ebd d\u1eabn \u0111\u1ebfn l\u1ed7i khi ch\u1ea1y.<\/li>\n<\/ul>\n

              \ud83d\udea6 Chuy\u1ec3n \u0111\u1ed5i sang tri\u1ec3n khai<\/h2>\n

              S\u01a1 \u0111\u1ed3 T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ea3n thi\u1ebft k\u1ebf cho qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n. Khi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n b\u1eaft \u0111\u1ea7u vi\u1ebft m\u00e3, lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh logic th\u1ef1c thi (c\u00e2u l\u1ec7nh if\/else, v\u00f2ng l\u1eb7p), trong khi c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh khai b\u00e1o bi\u1ebfn v\u00e0 c\u1ea5u tr\u00fac d\u1eef li\u1ec7u.<\/p>\n

              Vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a r\u00f5 r\u00e0ng gi\u00fap gi\u1ea3m t\u1ea3i nh\u1eadn th\u1ee9c cho \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt. Khi s\u01a1 \u0111\u1ed3 ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c c\u00e1c ph\u1ee5 thu\u1ed9c v\u1ec1 \u0111i\u1ec1u khi\u1ec3n v\u00e0 d\u1eef li\u1ec7u, m\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb \u0111\u00f3 s\u1ebd d\u1ec5 b\u1ea3o tr\u00ec h\u01a1n v\u00e0 \u00edt g\u1eb7p ph\u1ea3i c\u00e1c \u0111i\u1ec1u ki\u1ec7n tranh ch\u1ea5p (race conditions). Bi\u1ec3u di\u1ec5n tr\u1ef1c quan \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t h\u1ee3p \u0111\u1ed3ng gi\u1eefa \u0111\u1ed9i thi\u1ebft k\u1ebf v\u00e0 \u0111\u1ed9i tri\u1ec3n khai.<\/p>\n

              \ud83d\udcdd T\u00f3m t\u1eaft c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh<\/h2>\n

              \u0110\u1ec3 t\u00f3m t\u1eaft l\u1ea1i c\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn:<\/p>\n

                \n
              • Lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n:<\/strong>Qu\u1ea3n l\u00fd th\u1ee9 t\u1ef1 th\u1ef1c thi th\u00f4ng qua c\u00e1c c\u1ea1nh v\u00e0 c\u00e1c n\u00fat quy\u1ebft \u0111\u1ecbnh.<\/li>\n
              • N\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong>Qu\u1ea3n l\u00fd lu\u1ed3ng d\u1eef li\u1ec7u th\u00f4ng qua c\u00e1c ch\u1ed1t (pins) v\u00e0 b\u1ed9 \u0111\u1ec7m (buffers).<\/li>\n
              • Ph\u00e2n nh\u00e1nh\/H\u1ee3p nh\u1ea5t (Fork\/Join):<\/strong>X\u1eed l\u00fd t\u00ednh song song v\u00e0 s\u1ef1 \u0111\u1ed3ng b\u1ed9 h\u00f3a.<\/li>\n
              • C\u00e1c \u0111o\u1ea1n t\u01b0\u01a1ng t\u00e1c (Interaction Fragments):<\/strong>Cho ph\u00e9p m\u00f4 h\u00ecnh h\u00f3a chi ti\u1ebft c\u00e1c chu\u1ed7i s\u1ef1 ki\u1ec7n trong ph\u1ea7n t\u1ed5ng quan.<\/li>\n<\/ul>\n

                Th\u00e0nh th\u1ea1o c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y cho ph\u00e9p t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh h\u1ec7 th\u1ed1ng ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady. S\u01a1 \u0111\u1ed3 T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch k\u1ef7 lu\u1eadt v\u00e0 ch\u00fa tr\u1ecdng \u0111\u1ebfn ng\u1eef ngh\u0129a c\u01a1 b\u1ea3n c\u1ee7a \u0111i\u1ec1u khi\u1ec3n v\u00e0 d\u1eef li\u1ec7u.<\/p>\n

                \ud83d\udd2e C\u00e1c c\u00e2n nh\u1eafc trong t\u01b0\u01a1ng lai v\u1ec1 m\u00f4 h\u00ecnh h\u00f3a<\/h2>\n

                Khi ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m ph\u00e1t tri\u1ec3n theo h\u01b0\u1edbng vi d\u1ecbch v\u1ee5 v\u00e0 h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean s\u1ef1 ki\u1ec7n, vai tr\u00f2 c\u1ee7a c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y v\u1eabn gi\u1eef nguy\u00ean t\u00ednh li\u00ean quan. C\u00e1c nguy\u00ean t\u1eafc t\u00e1ch bi\u1ec7t logic \u0111i\u1ec1u khi\u1ec3n kh\u1ecfi tr\u1ea1ng th\u00e1i d\u1eef li\u1ec7u l\u00e0 ph\u1ed5 qu\u00e1t. D\u00f9 l\u00e0 m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u01a1n kh\u1ed1i hay m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u00e1m m\u00e2y ph\u00e2n t\u00e1n, s\u1ef1 r\u00f5 r\u00e0ng do S\u01a1 \u0111\u1ed3 T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c mang l\u1ea1i gi\u00fap c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u \u0111\u01b0\u1ee3c h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

                Vi\u1ec7c li\u00ean t\u1ee5c tinh ch\u1ec9nh c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0 \u0111i\u1ec1u \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb. Khi c\u00e1c y\u00eau c\u1ea7u thay \u0111\u1ed5i, lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ea3i \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt \u0111\u1ec3 ph\u1ea3n \u00e1nh th\u1ef1c t\u1ebf m\u1edbi. Vi\u1ec7c gi\u1eef cho c\u00e1c m\u00f4 h\u00ecnh \u0111\u1ed3ng b\u1ed9 v\u1edbi qu\u00e1 tr\u00ecnh tri\u1ec3n khai \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00e0i li\u1ec7u v\u1eabn l\u00e0 m\u1ed9t t\u00e0i s\u1ea3n c\u00f3 gi\u00e1 tr\u1ecb thay v\u00ec tr\u1edf th\u00e0nh g\u00e1nh n\u1eb7ng.<\/p>\n

                B\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u00e1c c\u01a1 ch\u1ebf c\u1ee5 th\u1ec3 c\u1ee7a lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng, c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng kh\u00f4ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t m\u00e0 c\u00f2n d\u1ec5 hi\u1ec3u v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec trong d\u00e0i h\u1ea1n.<\/p>\n","protected":false},"excerpt":{"rendered":"

                Bi\u1ec3u \u0111\u1ed3 t\u1ed5ng quan t\u01b0\u01a1ng t\u00e1c \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u1ea7u n\u1ed1i quan tr\u1ecdng gi\u1eefa lu\u1ed3ng ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea5p \u0111\u1ed9 cao v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c chu\u1ed7i chi ti\u1ebft. Ch\u00fang…<\/p>\n","protected":false},"author":1,"featured_media":409,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Kh\u00e1m ph\u00e1 s\u00e2u: Lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n & N\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng trong c\u00e1c T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a S\u01a1 \u0111\u1ed3 T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Hi\u1ec3u r\u00f5 c\u00e1c c\u1ea1nh lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n, c\u00e1c n\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 ng\u1eef ngh\u0129a truy\u1ec1n d\u1eef li\u1ec7u trong m\u00f4 h\u00ecnh h\u00f3a h\u1ec7 th\u1ed1ng UML.","inline_featured_image":false,"source_url":"","fifu_image_url":"","fifu_image_alt":"","_fifu_image_alt":"","fifu_alt":"","_fifu_alt":"","fifu_image_title":"","_fifu_image_title":"","fifu_input_alt":"","vp_image_hash":"","footnotes":""},"categories":[5],"tags":[6,18],"asset-category":[],"class_list":["post-408","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","tag-academic","tag-interaction-overview-diagram"],"source_url":"","fifu_image_url":"","fifu_image_alt":"","vp_image_hash":"","yoast_head":"\nKh\u00e1m ph\u00e1 s\u00e2u: Lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n & N\u00fat \u0111\u1ed1i t\u01b0\u1ee3ng trong c\u00e1c T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a S\u01a1 \u0111\u1ed3 T\u1ed5ng quan T\u01b0\u01a1ng t\u00e1c m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. 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