{"id":610,"date":"2026-04-02T16:58:01","date_gmt":"2026-04-02T16:58:01","guid":{"rendered":"https:\/\/www.viz-tools.com\/vi\/uml-timing-diagram-checklist-10-essential-elements\/"},"modified":"2026-04-02T16:58:01","modified_gmt":"2026-04-02T16:58:01","slug":"uml-timing-diagram-checklist-10-essential-elements","status":"publish","type":"post","link":"https:\/\/www.viz-tools.com\/vi\/uml-timing-diagram-checklist-10-essential-elements\/","title":{"rendered":"B\u1ea3ng ki\u1ec3m s\u01a1 \u0111\u1ed3 Th\u1eddi gian UML: 10 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu m\u00e0 m\u1ecdi nh\u00e0 ph\u00e1t tri\u1ec3n trung c\u1ea5p ph\u1ea3i bao g\u1ed3m"},"content":{"rendered":"

M\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed3ng th\u1eddi \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c. Khi m\u1ed9t nh\u00e0 ph\u00e1t tri\u1ec3n v\u01b0\u1ee3t qua c\u00e1c lu\u1ed3ng th\u1ef1c thi tuy\u1ebfn t\u00ednh \u0111\u01a1n gi\u1ea3n, \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a th\u1eddi gian tr\u1edf th\u00e0nh bi\u1ebfn s\u1ed1 ch\u00ednh. Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p m\u1ed9t c\u00f4ng c\u1ee5 c\u1ee5 th\u1ec3 cho \u0111i\u1ec1u n\u00e0y: s\u01a1 \u0111\u1ed3 Th\u1eddi gian. Trong khi s\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1 cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ea5p cao v\u1ec1 th\u1ee9 t\u1ef1 t\u01b0\u01a1ng t\u00e1c, s\u01a1 \u0111\u1ed3 Th\u1eddi gian \u0111i s\u00e2u v\u00e0o c\u00e1c m\u1ed1i quan h\u1ec7 v\u1ec1 th\u1eddi gian gi\u1eefa c\u00e1c s\u1ef1 ki\u1ec7n. M\u1ee9c \u0111\u1ed9 chi ti\u1ebft n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n trung c\u1ea5p, nh\u1eefng ng\u01b0\u1eddi ch\u1ecbu tr\u00e1ch nhi\u1ec7m thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1nh m\u1ebd, th\u1eddi gian th\u1ef1c ho\u1eb7c nh\u00fang.<\/p>\n

M\u1ed9t s\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ed1t s\u1ebd ng\u0103n ng\u1eeba c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ea1nh tranh, l\u00e0m r\u00f5 c\u00e1c chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i v\u00e0 ghi l\u1ea1i c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian ch\u00ednh x\u00e1c c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng. Tuy nhi\u00ean, vi\u1ec7c t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y mang l\u1ea1i nh\u1eefng k\u00fd hi\u1ec7u v\u00e0 quy t\u1eafc c\u1ee5 th\u1ec3, kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 UML kh\u00e1c. H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau r\u00f5 10 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu m\u00e0 m\u1ecdi nh\u00e0 ph\u00e1t tri\u1ec3n trung c\u1ea5p ph\u1ea3i bao g\u1ed3m \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 ch\u00ednh x\u00e1c trong t\u00e0i li\u1ec7u thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m c\u1ee7a h\u1ecd.<\/p>\n

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

\ud83d\udcca Hi\u1ec3u b\u1ed1i c\u1ea3nh: T\u1ea1i sao s\u01a1 \u0111\u1ed3 Th\u1eddi gian l\u1ea1i quan tr\u1ecdng<\/h2>\n

Tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u b\u1ea3ng ki\u1ec3m, c\u1ea7n hi\u1ec3u r\u00f5 v\u1ecb tr\u00ed c\u1ee5 th\u1ec3 m\u00e0 s\u01a1 \u0111\u1ed3 Th\u1eddi gian chi\u1ebfm gi\u1eef. Trong ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m, th\u01b0\u1eddng x\u1ea3y ra nh\u1ea7m l\u1eabn gi\u1eefa s\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1 v\u00e0 s\u01a1 \u0111\u1ed3 Th\u1eddi gian. C\u1ea3 hai \u0111\u1ec1u m\u00f4 t\u1ea3 c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u00e0nh ph\u1ea7n. S\u1ef1 kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf c\u00e1ch bi\u1ec3u di\u1ec5n tr\u1ee5c X.<\/p>\n

    \n
  • S\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1:<\/strong> T\u1eadp trung v\u00e0o th\u1ee9 t\u1ef1 c\u1ee7a c\u00e1c tin nh\u1eafn. Tr\u1ee5c X bi\u1ec3u di\u1ec5n th\u1eddi gian m\u1ed9t c\u00e1ch ng\u1ea7m \u0111\u1ecbnh, nh\u01b0ng thang \u0111o kh\u00f4ng \u0111\u01b0\u1ee3c n\u00eau r\u00f5. Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng kh\u00f4ng nh\u1ea5t thi\u1ebft bi\u1ec3u th\u1ecb c\u00e1c kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3.<\/li>\n
  • S\u01a1 \u0111\u1ed3 Th\u1eddi gian:<\/strong> T\u1eadp trung v\u00e0o th\u1eddi l\u01b0\u1ee3ng th\u1ef1c t\u1ebf c\u1ee7a c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 th\u1eddi \u0111i\u1ec3m x\u1ea3y ra s\u1ef1 ki\u1ec7n. Tr\u1ee5c X l\u00e0 m\u1ed9t thang \u0111o th\u1eddi gian c\u1ee5 th\u1ec3. Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c s\u1ef1 ki\u1ec7n bi\u1ec3u th\u1ecb m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c.<\/li>\n<\/ul>\n

    \u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n trung c\u1ea5p, s\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng. N\u1ebfu b\u1ea1n \u0111ang t\u00e0i li\u1ec7u h\u00f3a m\u1ed9t h\u1ec7 th\u1ed1ng m\u00e0 th\u1eddi gian ch\u1edd 500 mili gi\u00e2y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t, ho\u1eb7c n\u01a1i hai lu\u1ed3ng ph\u1ea3i \u0111\u1ed3ng b\u1ed9 h\u00f3a trong m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3, s\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1 l\u00e0 kh\u00f4ng \u0111\u1ee7. S\u01a1 \u0111\u1ed3 Th\u1eddi gian cung c\u1ea5p \u0111\u1ed9 chi ti\u1ebft c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e1c minh c\u00e1c y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc khi vi\u1ebft m\u00e3.<\/p>\n

    \ud83d\udee0\ufe0f B\u1ea3ng ki\u1ec3m 10 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu<\/h2>\n

    \u0110\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t s\u01a1 \u0111\u1ed3 Th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng v\u00e0 d\u1ec5 \u0111\u1ecdc, c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee5 th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c hi\u1ec7n di\u1ec7n. Vi\u1ec7c b\u1ecf s\u00f3t b\u1ea5t k\u1ef3 th\u00e0nh ph\u1ea7n n\u00e0o c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 m\u01a1 h\u1ed3, hi\u1ec3u nh\u1ea7m t\u1eeb ph\u00eda c\u00e1c b\u00ean li\u00ean quan ho\u1eb7c sai s\u00f3t trong tri\u1ec3n khai. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 10 y\u1ebfu t\u1ed1 c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 m\u1ed9t b\u1ea3n m\u00f4 t\u1ea3 \u0111\u1ea7y \u0111\u1ee7.<\/p>\n

    1. \u0110\u01b0\u1eddng s\u1ed1ng (Ng\u01b0\u1eddi tham gia)<\/h3>\n

    N\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea5t k\u1ef3 s\u01a1 \u0111\u1ed3 t\u01b0\u01a1ng t\u00e1c UML n\u00e0o l\u00e0 \u0111\u01b0\u1eddng s\u1ed1ng. Trong s\u01a1 \u0111\u1ed3 Th\u1eddi gian, \u0111\u01b0\u1eddng s\u1ed1ng bi\u1ec3u di\u1ec5n m\u1ed9t ng\u01b0\u1eddi tham gia c\u1ee5 th\u1ec3 trong h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t l\u1edbp ph\u1ea7n m\u1ec1m, m\u1ed9t th\u00e0nh ph\u1ea7n ph\u1ea7n c\u1ee9ng, m\u1ed9t lu\u1ed3ng ho\u1eb7c m\u1ed9t h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i.<\/p>\n

      \n
    • Bi\u1ec3u di\u1ec5n tr\u1ef1c quan:<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c v\u1ebd d\u01b0\u1edbi d\u1ea1ng m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ee9ng k\u00e9o d\u00e0i xu\u1ed1ng d\u01b0\u1edbi.<\/li>\n
    • Nh\u00e3n:<\/strong> \u0110\u01b0\u1eddng s\u1ed1ng ph\u1ea3i \u0111\u01b0\u1ee3c ghi nh\u00e3n r\u00f5 r\u00e0ng \u1edf \u0111\u1ea7u tr\u00ean. S\u1eed d\u1ee5ng t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a l\u1edbp ho\u1eb7c th\u00e0nh ph\u1ea7n.<\/li>\n
    • Ph\u1ea1m vi:<\/strong> \u0110\u1ea3m b\u1ea3o \u0111\u01b0\u1eddng s\u1ed1ng bao ph\u1ee7 to\u00e0n b\u1ed9 th\u1eddi gian c\u1ee7a t\u00ecnh hu\u1ed1ng \u0111ang \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a. N\u1ebfu m\u1ed9t th\u00e0nh ph\u1ea7n kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng trong kho\u1ea3ng th\u1eddi gian \u0111\u00f3, \u0111\u01b0\u1eddng s\u1ed1ng v\u1eabn t\u1ed3n t\u1ea1i, nh\u01b0ng c\u00e1ch bi\u1ec3u di\u1ec5n tr\u1ea1ng th\u00e1i s\u1ebd thay \u0111\u1ed5i.<\/li>\n<\/ul>\n

      Kh\u00f4ng c\u00f3 c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng r\u00f5 r\u00e0ng, s\u1ebd kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh th\u00e0nh ph\u1ea7n n\u00e0o \u0111ang ph\u1ea3n \u1ee9ng v\u1edbi s\u1ef1 ki\u1ec7n n\u00e0o. Y\u1ebfu t\u1ed1 n\u00e0y th\u01b0\u1eddng b\u1ecb b\u1ecf qua khi t\u1eadp trung qu\u00e1 nhi\u1ec1u v\u00e0o c\u00e1c tin nh\u1eafn, d\u1eabn \u0111\u1ebfn s\u1ef1 nh\u1ea7m l\u1eabn v\u1ec1 quy\u1ec1n s\u1edf h\u1eefu c\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i.<\/p>\n

      2. Thang \u0111o Th\u1eddi gian (Tr\u1ee5c X)<\/h3>\n

      \u0110\u1eb7c \u0111i\u1ec3m \u0111\u1ecbnh ngh\u0129a c\u1ee7a s\u01a1 \u0111\u1ed3 Th\u1eddi gian l\u00e0 tr\u1ee5c th\u1eddi gian ngang. Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1 n\u01a1i th\u1eddi gian ch\u1ea3y xu\u1ed1ng trang, \u1edf \u0111\u00e2y th\u1eddi gian ch\u1ea3y t\u1eeb tr\u00e1i sang ph\u1ea3i.<\/p>\n

        \n
      • \u0110\u01a1n v\u1ecb:<\/strong> Thang \u0111o ph\u1ea3i x\u00e1c \u0111\u1ecbnh r\u00f5 \u0111\u01a1n v\u1ecb (v\u00ed d\u1ee5: mili gi\u00e2y, gi\u00e2y, chu k\u1ef3 \u0111\u1ed3ng h\u1ed3). Kh\u00f4ng n\u00ean gi\u1ea3 \u0111\u1ecbnh ng\u01b0\u1eddi \u0111\u1ecdc bi\u1ebft \u0111\u01a1n v\u1ecb.<\/li>\n
      • C\u00e1c d\u1ea5u \u0111\u00e1nh d\u1ea5u:<\/strong> Bao g\u1ed3m c\u00e1c d\u1ea5u chia kho\u1ea3ng c\u00e1ch \u0111\u1ec1u nhau. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u01b0\u1eddi \u0111\u1ecdc \u01b0\u1edbc l\u01b0\u1ee3ng th\u1eddi l\u01b0\u1ee3ng c\u1ee7a c\u00e1c tr\u1ea1ng th\u00e1i ho\u1eb7c \u0111\u1ed9 tr\u1ec5 c\u1ee5 th\u1ec3.<\/li>\n
      • H\u01b0\u1edbng:<\/strong> \u0110\u1ea3m b\u1ea3o m\u0169i t\u00ean tr\u00ean tr\u1ee5c ch\u1ec9 v\u1ec1 b\u00ean ph\u1ea3i, th\u1ec3 hi\u1ec7n th\u1eddi gian ti\u1ebfn v\u1ec1 ph\u00eda tr\u01b0\u1edbc.<\/li>\n<\/ul>\n

        Vi\u1ec7c thi\u1ebfu ho\u1eb7c kh\u00f4ng r\u00f5 r\u00e0ng v\u1ec1 thang \u0111o th\u1eddi gian s\u1ebd khi\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean v\u00f4 d\u1ee5ng cho ph\u00e2n t\u00edch th\u1eddi gian. N\u1ebfu s\u01a1 \u0111\u1ed3 nh\u1eb1m th\u1ec3 hi\u1ec7n ‘t\u00ednh nh\u1ea5t qu\u00e1n cu\u1ed1i c\u00f9ng’, thang \u0111o c\u00f3 th\u1ec3 mang t\u00ednh tr\u1eebu t\u01b0\u1ee3ng. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c, thang \u0111o l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t trong t\u00e0i li\u1ec7u.<\/p>\n

        3. Bi\u1ec3u di\u1ec5n tr\u1ea1ng th\u00e1i (v\u00f9ng)<\/h3>\n

        S\u01a1 \u0111\u1ed3 th\u1eddi gian xu\u1ea5t s\u1eafc trong vi\u1ec7c hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng theo th\u1eddi gian. Thay v\u00ec ch\u1ec9 hi\u1ec3n th\u1ecb c\u00e1c tin nh\u1eafn, b\u1ea1n s\u1ebd hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch v\u1ebd m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt (v\u00f9ng) l\u00ean \u0111\u01b0\u1eddng s\u1ed1ng.<\/p>\n

          \n
        • \u0110\u1eb7t t\u00ean tr\u1ea1ng th\u00e1i:<\/strong>Nh\u00e3n r\u00f5 r\u00e0ng tr\u1ea1ng th\u00e1i b\u00ean trong v\u00f9ng (v\u00ed d\u1ee5: \u201cNg\u01b0ng\u201d, \u201c\u0110ang x\u1eed l\u00fd\u201d, \u201c\u0110ang ch\u1edd\u201d).<\/li>\n
        • Chuy\u1ec3n ti\u1ebfp:<\/strong>S\u1eed d\u1ee5ng c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ee9ng ho\u1eb7c k\u00fd hi\u1ec7u c\u1ee5 th\u1ec3 \u0111\u1ec3 ch\u1ec9 ra khi tr\u1ea1ng th\u00e1i thay \u0111\u1ed5i t\u1eeb v\u00f9ng n\u00e0y sang v\u00f9ng kh\u00e1c.<\/li>\n
        • Thay \u0111\u1ed5i gi\u00e1 tr\u1ecb:<\/strong>\u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n hi\u1ec3n th\u1ecb s\u1ef1 thay \u0111\u1ed5i gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t bi\u1ebfn c\u1ee5 th\u1ec3 theo th\u1eddi gian b\u00ean trong v\u00f9ng.<\/li>\n<\/ul>\n

          Vi\u1ec7c bi\u1ec3u di\u1ec5n tr\u1ea1ng th\u00e1i gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n h\u00ecnh dung \u0111\u01b0\u1ee3c v\u00f2ng \u0111\u1eddi c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng m\u00e0 kh\u00f4ng c\u1ea7n theo d\u00f5i m\u1ed9t chu\u1ed7i d\u00e0i c\u00e1c tin nh\u1eafn. N\u00f3 \u0111\u01a1n gi\u1ea3n h\u00f3a logic ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c kh\u1ed1i h\u00ecnh \u1ea3nh theo th\u1eddi gian.<\/p>\n

          4. Thanh k\u00edch ho\u1ea1t (t\u1eadp trung ki\u1ec3m so\u00e1t)<\/h3>\n

          Thanh k\u00edch ho\u1ea1t (hay t\u1eadp trung ki\u1ec3m so\u00e1t) cho bi\u1ebft khi n\u00e0o m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u0111ang th\u1ef1c hi\u1ec7n m\u1ed9t thao t\u00e1c ho\u1eb7c \u0111ang \u1edf gi\u1eefa m\u1ed9t qu\u00e1 tr\u00ecnh. \u0110i\u1ec1u n\u00e0y kh\u00e1c bi\u1ec7t v\u1edbi tr\u1ea1ng th\u00e1i; thanh k\u00edch ho\u1ea1t cho th\u1ea5y c\u00f4ng vi\u1ec7c \u0111ang di\u1ec5n ra.<\/p>\n

            \n
          • V\u1ecb tr\u00ed:<\/strong>V\u1ebd d\u01b0\u1edbi d\u1ea1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt m\u1ecfng tr\u00ean \u0111\u01b0\u1eddng s\u1ed1ng.<\/li>\n
          • Th\u1eddi l\u01b0\u1ee3ng:<\/strong>\u0110\u1ed9 d\u00e0i c\u1ee7a thanh t\u01b0\u01a1ng \u1ee9ng v\u1edbi th\u1eddi l\u01b0\u1ee3ng c\u1ee7a thao t\u00e1c.<\/li>\n
          • L\u1ed3ng gh\u00e9p:<\/strong>N\u1ebfu m\u1ed9t thao t\u00e1c k\u00edch ho\u1ea1t m\u1ed9t thao t\u00e1c kh\u00e1c trong c\u00f9ng m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng, c\u00e1c thanh k\u00edch ho\u1ea1t l\u1ed3ng gh\u00e9p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ec3 hi\u1ec7n \u0111\u1ec7 quy ho\u1eb7c c\u00e1c l\u1eddi g\u1ecdi n\u1ed9i b\u1ed9.<\/li>\n<\/ul>\n

            Sai l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0 nh\u1ea7m l\u1eabn thanh k\u00edch ho\u1ea1t v\u1edbi c\u00e1c v\u00f9ng tr\u1ea1ng th\u00e1i. Thanh k\u00edch ho\u1ea1t ng\u1ee5 \u00fd ho\u1ea1t \u0111\u1ed9ng; c\u00e1c v\u00f9ng tr\u1ea1ng th\u00e1i ng\u1ee5 \u00fd tr\u1ea1ng th\u00e1i. C\u1ea3 hai \u0111\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 b\u1ee9c tranh \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 h\u00e0nh vi \u0111\u1ed3ng th\u1eddi.<\/p>\n

            5. Tin nh\u1eafn v\u00e0 t\u00edn hi\u1ec7u<\/h3>\n

            Tin nh\u1eafn l\u00e0 c\u00e1c t\u00e1c nh\u00e2n g\u00e2y ra s\u1ef1 thay \u0111\u1ed5i trong tr\u1ea1ng th\u00e1i ho\u1eb7c k\u00edch ho\u1ea1t. Trong s\u01a1 \u0111\u1ed3 th\u1eddi gian, ch\u00fang \u0111\u01b0\u1ee3c v\u1ebd d\u01b0\u1edbi d\u1ea1ng c\u00e1c m\u0169i t\u00ean ngang k\u1ebft n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng.<\/p>\n

              \n
            • C\u0103n ch\u1ec9nh:<\/strong>M\u0169i t\u00ean ph\u1ea3i c\u0103n ch\u1ec9nh v\u1edbi \u0111i\u1ec3m th\u1eddi gian ch\u00ednh x\u00e1c tr\u00ean tr\u1ee5c X n\u01a1i tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi.<\/li>\n
            • Lo\u1ea1i:<\/strong>Ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c l\u1eddi g\u1ecdi \u0111\u1ed3ng b\u1ed9 (\u0111\u1ea7u m\u0169i t\u00ean li\u1ec1n), t\u00edn hi\u1ec7u b\u1ea5t \u0111\u1ed3ng b\u1ed9 (\u0111\u1ea7u m\u0169i t\u00ean h\u1edf) v\u00e0 gi\u00e1 tr\u1ecb tr\u1ea3 v\u1ec1 (\u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t).<\/li>\n
            • Ghi nh\u00e3n:<\/strong>M\u1ed7i tin nh\u1eafn ph\u1ea3i c\u00f3 t\u00ean v\u00e0, n\u1ebfu c\u00f3, tham s\u1ed1.<\/li>\n<\/ul>\n

              Vi\u1ec7c c\u0103n ch\u1ec9nh tin nh\u1eafn l\u00e0 kh\u00eda c\u1ea1nh quan tr\u1ecdng nh\u1ea5t c\u1ee7a s\u01a1 \u0111\u1ed3 th\u1eddi gian. M\u1ed9t tin nh\u1eafn g\u1eedi \u1edf 100ms kh\u00e1c v\u1edbi tin nh\u1eafn g\u1eedi \u1edf 105ms. \u0110\u1ed9 ch\u00ednh x\u00e1c \u1edf \u0111\u00e2y l\u00e0 kh\u00f4ng th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n

              6. S\u1ef1 ki\u1ec7n x\u1ea3y ra<\/h3>\n

              C\u00e1c s\u1ef1 ki\u1ec7n x\u1ea3y ra \u0111\u1ea1i di\u1ec7n cho vi\u1ec7c th\u1ef1c hi\u1ec7n th\u1ef1c t\u1ebf c\u1ee7a m\u1ed9t tin nh\u1eafn ho\u1eb7c s\u1ef1 ki\u1ec7n. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng c\u00e1c v\u00f2ng tr\u00f2n nh\u1ecf ho\u1eb7c k\u00fd hi\u1ec7u c\u1ee5 th\u1ec3 tr\u00ean \u0111\u01b0\u1eddng s\u1ed1ng.<\/p>\n

                \n
              • \u0110i\u1ec3m th\u1eddi gian:<\/strong> Nh\u1eefng \u0111i\u1ec3m n\u00e0y \u0111\u00e1nh d\u1ea5u th\u1eddi \u0111i\u1ec3m ch\u00ednh x\u00e1c m\u00e0 m\u1ed9t t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c nh\u1eadn ho\u1eb7c m\u1ed9t s\u1ef1 ki\u1ec7n x\u1ea3y ra.<\/li>\n
              • T\u1ea7n su\u1ea5t:<\/strong> N\u1ebfu m\u1ed9t h\u1ec7 th\u1ed1ng ki\u1ec3m tra c\u1ea3m bi\u1ebfn, c\u00e1c s\u1ef1 ki\u1ec7n xu\u1ea5t hi\u1ec7n s\u1ebd th\u1ec3 hi\u1ec7n c\u00e1c kho\u1ea3ng th\u1eddi gian \u0111\u1ec1u \u0111\u1eb7n c\u1ee7a c\u00e1c l\u1ea7n ki\u1ec3m tra n\u00e0y.<\/li>\n<\/ul>\n

                C\u00e1c s\u1ef1 ki\u1ec7n xu\u1ea5t hi\u1ec7n gi\u00fap ph\u00e2n bi\u1ec7t gi\u1eefa vi\u1ec7c g\u1eedi m\u1ed9t tin nh\u1eafn v\u00e0 vi\u1ec7c x\u1eed l\u00fd th\u1ef1c t\u1ebf c\u1ee7a n\u00f3. Ch\u00fang r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 g\u1ee1 l\u1ed7i c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111\u1ed9 tr\u1ec5.<\/p>\n

                7. R\u00e0ng bu\u1ed9c th\u1eddi gian (r\u00e0ng bu\u1ed9c v\u0103n b\u1ea3n)<\/h3>\n

                Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian \u0111\u1ec1u c\u00f3 th\u1ec3 v\u1ebd \u0111\u01b0\u1ee3c. \u0110\u00f4i khi, m\u1ed9t r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c ghi ch\u00e9p r\u00f5 r\u00e0ng b\u1eb1ng v\u0103n b\u1ea3n.<\/p>\n

                  \n
                • K\u00fd hi\u1ec7u:<\/strong> S\u1eed d\u1ee5ng k\u00fd hi\u1ec7u \u0111\u1eb7c tr\u01b0ng UML `\u00abconstraint\u00bb` ho\u1eb7c c\u00e1c ch\u00fa th\u00edch v\u0103n b\u1ea3n chu\u1ea9n.<\/li>\n
                • V\u00ed d\u1ee5:<\/strong> \u201cTh\u1eddi gian ph\u1ea3n h\u1ed3i ph\u1ea3i nh\u1ecf h\u01a1n 50ms\u201d, \u201cTh\u1eddi gian ch\u1edd h\u1ebft h\u1ea1n l\u00e0 5s\u201d.<\/li>\n
                • V\u1ecb tr\u00ed:<\/strong> \u0110\u1eb7t ch\u00fang g\u1ea7n \u0111\u01b0\u1eddng s\u1ed1ng ho\u1eb7c tin nh\u1eafn li\u00ean quan \u0111\u1ec3 tr\u00e1nh hi\u1ec3u nh\u1ea7m.<\/li>\n<\/ul>\n

                  C\u00e1c r\u00e0ng bu\u1ed9c n\u00e0y \u0111\u00f3ng vai tr\u00f2 nh\u01b0 h\u1ee3p \u0111\u1ed3ng gi\u1eefa thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai. Ch\u00fang x\u00e1c \u0111\u1ecbnh c\u00e1c gi\u1edbi h\u1ea1n m\u00e0 h\u1ec7 th\u1ed1ng ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

                  8. T\u01b0\u01a1ng t\u00e1c v\u00e0 ph\u1ee5 thu\u1ed9c<\/h3>\n

                  C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p bao g\u1ed3m nhi\u1ec1u \u0111\u01b0\u1eddng s\u1ed1ng t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. C\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n r\u00f5 r\u00e0ng.<\/p>\n

                    \n
                  • \u0110\u01b0\u1eddng ph\u1ee5 thu\u1ed9c:<\/strong> Hi\u1ec3n th\u1ecb c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0o ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh th\u1eddi gian.<\/li>\n
                  • Nh\u00f3m:<\/strong> S\u1eed d\u1ee5ng c\u00e1c kh\u1ed1i k\u1ebft h\u1ee3p (nh\u01b0 `alt` ho\u1eb7c `opt`) n\u1ebfu th\u1eddi gian ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t \u0111i\u1ec1u ki\u1ec7n, m\u1eb7c d\u00f9 \u0111i\u1ec1u n\u00e0y \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n trong c\u00e1c s\u01a1 \u0111\u1ed3 th\u1eddi gian thu\u1ea7n t\u00fay so v\u1edbi s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1.<\/li>\n<\/ul>\n

                    C\u00e1c \u0111\u01b0\u1eddng t\u01b0\u01a1ng t\u00e1c r\u00f5 r\u00e0ng gi\u00fap tr\u00e1nh s\u01a1 \u0111\u1ed3 tr\u1edf th\u00e0nh m\u1ed9t b\u1ea3n \u0111\u1ed3 h\u1ed7n \u0111\u1ed9n. N\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng t\u01b0\u01a1ng t\u00e1c v\u1edbi ba \u0111\u01b0\u1eddng kh\u00e1c, c\u00e1c \u0111\u01b0\u1eddng \u0111i ph\u1ea3i kh\u00e1c nhau.<\/p>\n

                    9. R\u00e0ng bu\u1ed9c th\u1eddi gian tr\u00ean tr\u1ea1ng th\u00e1i<\/h3>\n

                    Gi\u1ed1ng nh\u01b0 tin nh\u1eafn c\u00f3 r\u00e0ng bu\u1ed9c v\u1ec1 th\u1eddi gian, c\u00e1c tr\u1ea1ng th\u00e1i c\u0169ng c\u00f3 th\u1ec3 c\u00f3 r\u00e0ng bu\u1ed9c v\u1ec1 th\u1eddi l\u01b0\u1ee3ng. M\u1ed9t tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 c\u1ea7n duy tr\u00ec trong m\u1ed9t kho\u1ea3ng th\u1eddi gian t\u1ed1i thi\u1ec3u.<\/p>\n

                      \n
                    • T\u1ed1i thi\u1ec3u\/T\u1ed1i \u0111a:<\/strong> X\u00e1c \u0111\u1ecbnh th\u1eddi l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u ho\u1eb7c t\u1ed1i \u0111a cho m\u1ed9t tr\u1ea1ng th\u00e1i.<\/li>\n
                    • T\u00ednh h\u1ee3p l\u1ec7:<\/strong> Ch\u1ec9 ra li\u1ec7u m\u1ed9t tr\u1ea1ng th\u00e1i c\u00f3 h\u1ee3p l\u1ec7 ch\u1ec9 trong m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3 hay kh\u00f4ng.<\/li>\n<\/ul>\n

                      \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u lo\u1ea1i b\u1ecf nhi\u1ec5u \u0111\u1ea7u v\u00e0o ho\u1eb7c gi\u1eef t\u00e0i nguy\u00ean trong m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3. N\u00f3 ghi l\u1ea1i c\u00e1c quy t\u1eafc v\u1ec1 th\u1eddi gian c\u1ee7a m\u00e1y tr\u1ea1ng th\u00e1i.<\/p>\n

                      10. B\u1ed1i c\u1ea3nh v\u00e0 ph\u1ea1m vi<\/h3>\n

                      Cu\u1ed1i c\u00f9ng, s\u01a1 \u0111\u1ed3 ph\u1ea3i x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi c\u1ee7a n\u00f3. M\u00f4 h\u00ecnh h\u00f3a t\u00ecnh hu\u1ed1ng n\u00e0o?<\/p>\n

                        \n
                      • Ti\u00eau \u0111\u1ec1 t\u00ecnh hu\u1ed1ng:<\/strong> M\u1ed7i s\u01a1 \u0111\u1ed3 n\u00ean c\u00f3 ti\u00eau \u0111\u1ec1 r\u00f5 r\u00e0ng m\u00f4 t\u1ea3 t\u00ecnh hu\u1ed1ng (v\u00ed d\u1ee5: \u201cLu\u1ed3ng th\u1eddi gian h\u1ebft h\u1ea1n \u0111\u0103ng nh\u1eadp ng\u01b0\u1eddi d\u00f9ng\u201d).<\/li>\n
                      • \u0110i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft:<\/strong>N\u00eau r\u00f5 nh\u1eefng \u0111i\u1ec1u ph\u1ea3i \u0111\u00fang tr\u01b0\u1edbc khi s\u01a1 \u0111\u1ed3 th\u1eddi gian n\u00e0y h\u1ee3p l\u1ec7.<\/li>\n
                      • Ph\u1ea1m vi:<\/strong>X\u00e1c \u0111\u1ecbnh ph\u1ea7n n\u00e0o c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c bao g\u1ed3m. Lo\u1ea1i b\u1ecf c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng li\u00ean quan s\u1ebd gi\u1ea3m nhi\u1ec5u.<\/li>\n<\/ul>\n

                        Kh\u00f4ng c\u00f3 b\u1ed1i c\u1ea3nh, m\u1ed9t s\u01a1 \u0111\u1ed3 th\u1eddi gian ch\u1ec9 l\u00e0 t\u1eadp h\u1ee3p c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng. B\u1ed1i c\u1ea3nh gi\u00fap ng\u01b0\u1eddi \u0111\u1ecdc hi\u1ec3u l\u00fd do t\u1ea1i sao th\u1eddi gian bi\u1ec3u c\u1ee5 th\u1ec3 n\u00e0y quan tr\u1ecdng.<\/p>\n

                        \ud83d\udccb So s\u00e1nh: S\u01a1 \u0111\u1ed3 Th\u1eddi gian so v\u1edbi S\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1<\/h2>\n

                        \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n \u0111ang s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p cho c\u00f4ng vi\u1ec7c, h\u00e3y c\u00e2n nh\u1eafc nh\u1eefng kh\u00e1c bi\u1ec7t \u0111\u01b0\u1ee3c n\u00eau d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n\n\n\n\n\n\n\n\n\n
                        T\u00ednh n\u0103ng<\/th>\nS\u01a1 \u0111\u1ed3 Th\u1eddi gian<\/th>\nS\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1<\/th>\n<\/tr>\n<\/thead>\n
                        Tr\u1ecdng t\u00e2m ch\u00ednh<\/strong><\/td>\nTh\u1eddi l\u01b0\u1ee3ng th\u1eddi gian v\u00e0 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i<\/td>\nTh\u1ee9 t\u1ef1 c\u00e1c tin nh\u1eafn<\/td>\n<\/tr>\n
                        Tr\u1ee5c X<\/strong><\/td>\nThang th\u1eddi gian r\u00f5 r\u00e0ng<\/td>\nTh\u1eddi gian ng\u1ea7m \u0111\u1ecbnh<\/td>\n<\/tr>\n
                        M\u1ee9c \u0111\u1ed9 hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i<\/strong><\/td>\nCao (H\u00ecnh ch\u1eef nh\u1eadt tr\u00ean c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi)<\/td>\nTh\u1ea5p (T\u1eadp trung v\u00e0o \u0111\u1ed1i t\u01b0\u1ee3ng)<\/td>\n<\/tr>\n
                        Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng t\u1ed1t nh\u1ea5t<\/strong><\/td>\nTh\u1eddi gian th\u1ef1c, \u0111\u1ed3ng th\u1eddi, th\u1eddi gian h\u1ebft h\u1ea1n<\/td>\nLu\u1ed3ng logic, t\u01b0\u01a1ng t\u00e1c API<\/td>\n<\/tr>\n
                        \u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/strong><\/td>\nCao (Y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c)<\/td>\nTrung b\u00ecnh (Y\u00eau c\u1ea7u s\u1ef1 r\u00f5 r\u00e0ng)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                        \u26a0\ufe0f Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h2>\n

                        Ngay c\u1ea3 v\u1edbi danh s\u00e1ch ki\u1ec3m tra 10 y\u1ebfu t\u1ed1, l\u1ed7i v\u1eabn c\u00f3 th\u1ec3 x\u1ea3y ra. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n trung c\u1ea5p th\u01b0\u1eddng g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi nh\u1eefng chi ti\u1ebft tinh t\u1ebf trong s\u01a1 \u0111\u1ed3 th\u1eddi gian. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang.<\/p>\n

                        Sai l\u1ea7m 1: B\u1ecf qua s\u1ef1 l\u1ec7ch \u0111\u1ed3ng h\u1ed3<\/h3>\n

                        Trong c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n, c\u00e1c \u0111\u1ed3ng h\u1ed3 ch\u01b0a bao gi\u1edd \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 ho\u00e0n h\u1ea3o. S\u01a1 \u0111\u1ed3 Th\u1eddi gian th\u01b0\u1eddng gi\u1ea3 \u0111\u1ecbnh m\u1ed9t \u0111\u1ed3ng h\u1ed3 to\u00e0n c\u1ee5c duy nh\u1ea5t. N\u1ebfu b\u1ea1n \u0111ang m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n, b\u1ea1n ph\u1ea3i c\u00f4ng nh\u1eadn r\u1eb1ng tr\u1ee5c X \u0111\u1ea1i di\u1ec7n cho th\u1eddi gian logic, ch\u1ee9 kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0 th\u1eddi gian \u0111\u1ed3ng h\u1ed3 v\u1eadt l\u00fd cho m\u1ed7i n\u00fat.<\/p>\n

                        T\u00ecnh hu\u1ed1ng sai l\u1ea7m 2: \u0110\u1ea7y tr\u00e0n tr\u1ee5c<\/h3>\n

                        C\u1ed1 g\u1eafng hi\u1ec3n th\u1ecb t\u1eebng micro gi\u00e2y trong ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 khi\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc. S\u1eed d\u1ee5ng c\u00e1c g\u00f3c nh\u00ecn ph\u00f3ng to cho c\u00e1c ph\u1ea7n quan tr\u1ecdng v\u00e0 c\u00e1c g\u00f3c nh\u00ecn thu nh\u1ecf cho lu\u1ed3ng t\u1ed5ng th\u1ec3. Kh\u00f4ng \u00e9p bu\u1ed9c m\u1ed9t s\u01a1 \u0111\u1ed3 duy nh\u1ea5t ph\u1ea3i bao qu\u00e1t to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a \u1ee9ng d\u1ee5ng.<\/p>\n

                        T\u00ecnh hu\u1ed1ng sai l\u1ea7m 3: Tr\u1ed9n l\u1eabn c\u00e1c m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng<\/h3>\n

                        Kh\u00f4ng tr\u1ed9n l\u1eabn th\u1eddi gian ph\u1ea7n c\u1ee9ng (nano gi\u00e2y) v\u1edbi logic ph\u1ea7n m\u1ec1m (mili gi\u00e2y) trong c\u00f9ng m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u1eeb khi c\u1ea7n thi\u1ebft. Gi\u1eef cho \u0111\u01a1n v\u1ecb nh\u1ea5t qu\u00e1n \u0111\u1ec3 tr\u00e1nh nh\u1ea7m l\u1eabn.<\/p>\n

                        Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t 1: S\u1eed d\u1ee5ng k\u00fd hi\u1ec7u chu\u1ea9n<\/h3>\n

                        Tu\u00e2n th\u1ee7 chu\u1ea9n UML 2.5 cho s\u01a1 \u0111\u1ed3 th\u1eddi gian. Vi\u1ec7c thay \u0111\u1ed5i c\u00e1c h\u00ecnh d\u1ea1ng chu\u1ea9n (v\u00ed d\u1ee5: d\u00f9ng h\u00ecnh tr\u00f2n cho tin nh\u1eafn thay v\u00ec m\u0169i t\u00ean) s\u1ebd khi\u1ebfn ng\u01b0\u1eddi \u0111\u1ecdc quen thu\u1ed9c v\u1edbi chu\u1ea9n b\u1ecb nh\u1ea7m l\u1eabn.<\/p>\n

                        Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t 2: Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n<\/h3>\n

                        S\u01a1 \u0111\u1ed3 th\u1eddi gian thay \u0111\u1ed5i theo s\u1ef1 thay \u0111\u1ed5i c\u1ee7a h\u1ec7 th\u1ed1ng. Xem ch\u00fang nh\u01b0 m\u00e3 ngu\u1ed3n. L\u01b0u tr\u1eef ch\u00fang trong h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n. M\u1ed9t thay \u0111\u1ed5i gi\u00e1 tr\u1ecb th\u1eddi gian ch\u1edd trong s\u01a1 \u0111\u1ed3 n\u00ean k\u00edch ho\u1ea1t vi\u1ec7c xem x\u00e9t m\u00e3 ngu\u1ed3n.<\/p>\n

                        Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t 3: H\u1ee3p t\u00e1c<\/h3>\n

                        Xem x\u00e9t s\u01a1 \u0111\u1ed3 th\u1eddi gian c\u00f9ng v\u1edbi \u0111\u1ed9i ng\u0169 ph\u1ea7n c\u1ee9ng n\u1ebfu b\u1ea1n \u0111ang l\u00e0m vi\u1ec7c tr\u00ean h\u1ec7 th\u1ed1ng nh\u00fang. H\u1ecd c\u00f3 th\u1ec3 x\u00e1c minh xem c\u00e1c thang th\u1eddi gian c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi kh\u1ea3 n\u0103ng ph\u1ea7n c\u1ee9ng th\u1ef1c t\u1ebf hay kh\u00f4ng.<\/p>\n

                        \ud83e\udde9 T\u00edch h\u1ee3p v\u1edbi c\u00e1c t\u00e0i li\u1ec7u kh\u00e1c<\/h2>\n

                        M\u1ed9t s\u01a1 \u0111\u1ed3 th\u1eddi gian kh\u00f4ng t\u1ed3n t\u1ea1i m\u1ed9t c\u00e1ch c\u00f4 l\u1eadp. N\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 sinh th\u00e1i m\u00f4 h\u00ecnh h\u00f3a l\u1edbn h\u01a1n.<\/p>\n

                          \n
                        • S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i:<\/strong>S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u1ec3 x\u00e1c minh th\u1eddi gian chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong s\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i.<\/li>\n
                        • S\u01a1 \u0111\u1ed3 Th\u1ee9 t\u1ef1:<\/strong>S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u1ec3 l\u00e0m r\u00f5 c\u00e1c chu\u1ed7i ph\u1ee9c t\u1ea1p m\u00e0 th\u1eddi gian l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 gi\u1edbi h\u1ea1n.<\/li>\n
                        • S\u01a1 \u0111\u1ed3 Tri\u1ec3n khai:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ed9 tr\u1ec5 m\u1ea1ng gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e3 tri\u1ec3n khai.<\/li>\n<\/ul>\n

                          B\u1eb1ng c\u00e1ch li\u00ean k\u1ebft c\u00e1c t\u00e0i li\u1ec7u n\u00e0y, b\u1ea1n t\u1ea1o ra m\u1ed9t t\u00e0i li\u1ec7u thi\u1ebft k\u1ebf th\u1ed1ng nh\u1ea5t, bao g\u1ed3m logic, c\u1ea5u tr\u00fac v\u00e0 th\u1eddi gian.<\/p>\n

                          \ud83d\udd0d Ki\u1ec3m tra cu\u1ed1i c\u00f9ng danh s\u00e1ch ki\u1ec3m tra<\/h2>\n

                          Tr\u01b0\u1edbc khi ho\u00e0n thi\u1ec7n t\u00e0i li\u1ec7u c\u1ee7a b\u1ea1n, h\u00e3y th\u1ef1c hi\u1ec7n ki\u1ec3m tra nhanh n\u00e0y.<\/p>\n

                            \n
                          • \u2610 T\u1ea5t c\u1ea3 c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng c\u00f3 \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n ch\u00ednh x\u00e1c kh\u00f4ng?<\/li>\n
                          • \u2610 Thang th\u1eddi gian c\u00f3 r\u00f5 r\u00e0ng v\u00e0 c\u00f3 \u0111\u01a1n v\u1ecb \u0111o kh\u00f4ng?<\/li>\n
                          • \u2610 C\u00e1c v\u00f9ng tr\u1ea1ng th\u00e1i c\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng kh\u00f4ng?<\/li>\n
                          • \u2610 C\u00e1c thanh k\u00edch ho\u1ea1t c\u00f3 th\u1ec3 hi\u1ec7n \u0111\u00fang th\u1eddi l\u01b0\u1ee3ng kh\u00f4ng?<\/li>\n
                          • \u2610 C\u00e1c tin nh\u1eafn c\u00f3 \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh v\u1edbi tr\u1ee5c th\u1eddi gian kh\u00f4ng?<\/li>\n
                          • \u2610 C\u00e1c s\u1ef1 ki\u1ec7n xu\u1ea5t hi\u1ec7n c\u00f3 \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u khi c\u1ea7n thi\u1ebft kh\u00f4ng?<\/li>\n
                          • \u2610 C\u00e1c r\u00e0ng bu\u1ed9c v\u0103n b\u1ea3n c\u00f3 \u0111\u01b0\u1ee3c bao g\u1ed3m cho c\u00e1c quy t\u1eafc ph\u1ee9c t\u1ea1p kh\u00f4ng?<\/li>\n
                          • \u2610 C\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng c\u00f3 r\u00f5 r\u00e0ng kh\u00f4ng?<\/li>\n
                          • \u2610 C\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian tr\u1ea1ng th\u00e1i c\u00f3 \u0111\u01b0\u1ee3c ghi ch\u00e9p kh\u00f4ng?<\/li>\n
                          • \u2610 Li\u1ec7t k\u00ea b\u1ed1i c\u1ea3nh t\u00ecnh hu\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh?<\/li>\n<\/ul>\n

                            Vi\u1ec7c ho\u00e0n th\u00e0nh danh s\u00e1ch ki\u1ec3m tra n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u01a1 \u0111\u1ed3 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t b\u1ea3n v\u1ebd, m\u00e0 c\u00f2n l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u m\u00f4 t\u1ea3 c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 x\u00e1c minh h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng. N\u00f3 gi\u00fap l\u1ea5p \u0111\u1ea7y kho\u1ea3ng c\u00e1ch gi\u1eefa thi\u1ebft k\u1ebf c\u1ea5p cao v\u00e0 chi ti\u1ebft tri\u1ec3n khai c\u1ea5p th\u1ea5p.<\/p>\n

                            \ud83d\udee0\ufe0f C\u00e1c c\u00e2n nh\u1eafc v\u1ec1 tri\u1ec3n khai<\/h2>\n

                            Khi chuy\u1ec3n t\u1eeb thi\u1ebft k\u1ebf sang ph\u00e1t tri\u1ec3n, c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o cho ki\u1ec3m th\u1eed. C\u00e1c b\u1ed9 ki\u1ec3m th\u1eed t\u1ef1 \u0111\u1ed9ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 ki\u1ec3m tra xem h\u1ec7 th\u1ed1ng c\u00f3 tu\u00e2n th\u1ee7 c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 th\u1eddi gian \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong s\u01a1 \u0111\u1ed3 hay kh\u00f4ng. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ki\u1ec3m th\u1eed d\u1ef1a tr\u00ean th\u1eddi gian.<\/p>\n

                            C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u0169ng c\u1ea7n c\u00e2n nh\u1eafc \u0111\u1ebfn t\u00e1c \u0111\u1ed9ng v\u1ec1 hi\u1ec7u n\u0103ng. N\u1ebfu m\u1ed9t s\u01a1 \u0111\u1ed3 quy \u0111\u1ecbnh th\u1eddi gian ph\u1ea3n h\u1ed3i l\u00e0 10ms, th\u00ec tri\u1ec3n khai ph\u1ea3i \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u \u0111\u1ec3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u n\u00e0y. N\u1ebfu ki\u1ebfn tr\u00fac hi\u1ec7n t\u1ea1i kh\u00f4ng th\u1ec3 h\u1ed7 tr\u1ee3 \u0111i\u1ec1u \u0111\u00f3, s\u01a1 \u0111\u1ed3 s\u1ebd l\u00e0 b\u1eb1ng ch\u1ee9ng \u0111\u1ec3 y\u00eau c\u1ea7u thi\u1ebft k\u1ebf l\u1ea1i.<\/p>\n

                            V\u00f2ng ph\u1ea3n h\u1ed3i gi\u1eefa thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai ch\u00ednh l\u00e0 n\u01a1i gi\u00e1 tr\u1ecb th\u1ef1c s\u1ef1 c\u1ee7a s\u01a1 \u0111\u1ed3 Th\u1eddi gian n\u1eb1m \u1edf \u0111\u00f3. N\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o; m\u00e0 c\u00f2n l\u00e0 c\u00f4ng c\u1ee5 x\u00e1c th\u1ef1c.<\/p>\n

                            \ud83d\udcdd T\u00f3m t\u1eaft nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd<\/h2>\n

                            S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML l\u00e0 c\u00f4ng c\u1ee5 chuy\u00ean bi\u1ec7t \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a h\u00e0nh vi ph\u1ee5 thu\u1ed9c v\u00e0o th\u1eddi gian. Ch\u00fang r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u1ea5p trung \u0111ang l\u00e0m vi\u1ec7c tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed3ng th\u1eddi, th\u1eddi gian th\u1ef1c ho\u1eb7c c\u00f3 y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u n\u0103ng cao. 10 y\u1ebfu t\u1ed1 \u0111\u01b0\u1ee3c n\u00eau tr\u00ean t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng cho m\u1ed9t s\u01a1 \u0111\u1ed3 h\u1ee3p l\u1ec7.<\/p>\n

                            B\u1eb1ng c\u00e1ch ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng, thang th\u1eddi gian, c\u00e1c v\u00f9ng tr\u1ea1ng th\u00e1i v\u00e0 s\u1ef1 c\u0103n ch\u1ec9nh ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c th\u00f4ng \u0111i\u1ec7p, c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c t\u00e0i li\u1ec7u m\u00f4 t\u1ea3 gi\u00fap gi\u1ea3m thi\u1ec3u s\u1ef1 m\u01a1 h\u1ed3. Tr\u00e1nh nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn nh\u01b0 tr\u1ed9n l\u1eabn c\u00e1c m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng ho\u1eb7c b\u1ecf qua hi\u1ec7n t\u01b0\u1ee3ng tr\u00f4i \u0111\u1ed3ng h\u1ed3 s\u1ebd \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 lu\u00f4n ch\u00ednh x\u00e1c.<\/p>\n

                            Khi \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u1edbi c\u00e1c t\u00e0i li\u1ec7u UML kh\u00e1c v\u00e0 d\u00f9ng l\u00e0m c\u01a1 s\u1edf cho ki\u1ec3m th\u1eed, s\u01a1 \u0111\u1ed3 Th\u1eddi gian tr\u1edf th\u00e0nh m\u1ed9t t\u00e0i s\u1ea3n m\u1ea1nh m\u1ebd trong v\u00f2ng \u0111\u1eddi ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m. N\u00f3 bi\u1ebfn c\u00e1c y\u00eau c\u1ea7u tr\u1eebu t\u01b0\u1ee3ng th\u00e0nh nh\u1eefng r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3 v\u00e0 c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c.<\/p>\n

                            Vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac n\u00e0y trong t\u00e0i li\u1ec7u th\u1eddi gian s\u1ebd c\u1ea3i thi\u1ec7n giao ti\u1ebfp gi\u1eefa c\u00e1c ki\u1ebfn tr\u00fac s\u01b0, nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ng\u01b0\u1eddi ki\u1ec3m th\u1eed. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u c\u00f3 c\u00f9ng m\u1ed9t hi\u1ec3u bi\u1ebft v\u1ec1 h\u00e0nh vi theo th\u1eddi gian c\u1ee7a h\u1ec7 th\u1ed1ng. S\u1ef1 r\u00f5 r\u00e0ng n\u00e0y l\u00e0 n\u1ec1n t\u1ea3ng cho ph\u1ea7n m\u1ec1m \u0111\u00e1ng tin c\u1eady.<\/p>\n","protected":false},"excerpt":{"rendered":"

                            M\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed3ng th\u1eddi \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c. Khi m\u1ed9t nh\u00e0 ph\u00e1t tri\u1ec3n v\u01b0\u1ee3t qua c\u00e1c lu\u1ed3ng th\u1ef1c thi tuy\u1ebfn t\u00ednh \u0111\u01a1n gi\u1ea3n, \u0111\u1ed9 ph\u1ee9c…<\/p>\n","protected":false},"author":1,"featured_media":611,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Danh s\u00e1ch ki\u1ec3m tra S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML: 10 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu cho nh\u00e0 ph\u00e1t tri\u1ec3n","_yoast_wpseo_metadesc":"M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML. 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