{"id":370,"date":"2026-03-27T02:39:54","date_gmt":"2026-03-27T02:39:54","guid":{"rendered":"https:\/\/www.go-minder.com\/vi\/how-to-read-sequence-diagrams-messages-lifelines\/"},"modified":"2026-03-27T02:39:54","modified_gmt":"2026-03-27T02:39:54","slug":"how-to-read-sequence-diagrams-messages-lifelines","status":"publish","type":"post","link":"https:\/\/www.go-minder.com\/vi\/how-to-read-sequence-diagrams-messages-lifelines\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn UML – C\u00e1ch \u0111\u1ecdc s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: Tin nh\u1eafn, \u0111\u01b0\u1eddng s\u1ed1ng v\u00e0 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n"},"content":{"rendered":"

Hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c t\u01b0\u01a1ng t\u00e1c trong h\u1ec7 th\u1ed1ng \u0111\u00f2i h\u1ecfi m\u1ed9t ng\u00f4n ng\u1eef tr\u1ef1c quan r\u00f5 r\u00e0ng. Trong th\u1ebf gi\u1edbi c\u1ee7a Ng\u00f4n ng\u1eef M\u00f4 h\u00ecnh h\u00f3a \u0110\u01a1n nh\u1ea5t (UML), s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 quan tr\u1ecdng \u0111\u1ec3 l\u1eadp b\u1ea3n \u0111\u1ed3 c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u00e0nh ph\u1ea7n giao ti\u1ebfp theo th\u1eddi gian. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1ch \u0111\u1ecdc s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, t\u1eadp trung v\u00e0o tin nh\u1eafn, \u0111\u01b0\u1eddng s\u1ed1ng v\u00e0 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n. B\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y, c\u00e1c nh\u00f3m k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc v\u00e0 t\u00e0i li\u1ec7u h\u00f3a logic ph\u1ee9c t\u1ea1p m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n

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

\ud83d\udd0d S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 g\u00ec?<\/h2>\n

S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 t\u01b0\u01a1ng t\u00e1c cho th\u1ea5y c\u00e1c qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng v\u1edbi nhau nh\u01b0 th\u1ebf n\u00e0o v\u00e0 theo th\u1ee9 t\u1ef1 n\u00e0o. M\u1ee5c \u0111\u00edch ch\u00ednh l\u00e0 tr\u1ef1c quan h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 \u0111i\u1ec1u khi\u1ec3n gi\u1eefa c\u00e1c ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng. Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp t\u1eadp trung v\u00e0o c\u1ea5u tr\u00fac, s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 t\u1eadp trung v\u00e0o h\u00e0nh vi v\u00e0 th\u1eddi gian.<\/p>\n

Khi ph\u00e2n t\u00edch m\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, b\u1ea1n th\u1ef1c ch\u1ea5t \u0111ang \u0111\u1ecdc m\u1ed9t k\u1ecbch b\u1ea3n cho vi\u1ec7c th\u1ef1c thi ph\u1ea7n m\u1ec1m. N\u00f3 tr\u00ecnh b\u00e0y:<\/p>\n

    \n
  • C\u00e1c b\u00ean tham gia v\u00e0o t\u01b0\u01a1ng t\u00e1c.<\/li>\n
  • C\u00e1c tin nh\u1eafn \u0111\u01b0\u1ee3c trao \u0111\u1ed5i gi\u1eefa ch\u00fang.<\/li>\n
  • Th\u1ee9 t\u1ef1 x\u1ea3y ra c\u1ee7a c\u00e1c tin nh\u1eafn n\u00e0y.<\/li>\n
  • Tr\u1ea1ng th\u00e1i c\u1ee7a c\u00e1c b\u00ean tham gia trong su\u1ed1t qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c.<\/li>\n<\/ul>\n

    Vi\u1ec7c tr\u1ef1c quan h\u00f3a n\u00e0y gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c \u0111i\u1ec3m ngh\u1ebdn, l\u1ed7i logic v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c kh\u00f4ng r\u00f5 r\u00e0ng tr\u01b0\u1edbc khi vi\u1ebft m\u00e3. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t h\u1ee3p \u0111\u1ed3ng gi\u1eefa c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

    \ud83c\udfd7\ufe0f C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh: \u0110\u01b0\u1eddng s\u1ed1ng v\u00e0 c\u00e1c b\u00ean tham gia<\/h2>\n

    N\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea5t k\u1ef3 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 n\u00e0o n\u1eb1m \u1edf c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ee9ng. Nh\u1eefng \u0111\u01b0\u1eddng n\u00e0y \u0111\u1ea1i di\u1ec7n cho c\u00e1c th\u1ef1c th\u1ec3 tham gia v\u00e0o t\u01b0\u01a1ng t\u00e1c. Hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u01b0\u1eddng s\u1ed1ng l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 di\u1ec5n gi\u1ea3i ch\u00ednh x\u00e1c.<\/p>\n

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

    M\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u1ea1i di\u1ec7n cho m\u1ed9t b\u00ean tham gia trong t\u01b0\u01a1ng t\u00e1c. \u0110\u00f3 l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t \u0111\u1ee9ng, k\u00e9o d\u00e0i t\u1eeb \u0111\u1ea7u tr\u00ean \u0111\u1ebfn \u0111\u1ea7u d\u01b0\u1edbi c\u1ee7a s\u01a1 \u0111\u1ed3. \u0110\u01b0\u1eddng n\u00e0y cho th\u1ea5y s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c t\u00e1c nh\u00e2n trong su\u1ed1t th\u1eddi gian di\u1ec5n ra chu\u1ed7i s\u1ef1 ki\u1ec7n. H\u00e3y h\u00ecnh dung n\u00f3 nh\u01b0 m\u1ed9t d\u00f2ng th\u1eddi gian cho th\u1ef1c th\u1ec3 c\u1ee5 th\u1ec3 \u0111\u00f3.<\/p>\n

      \n
    • C\u1ea1nh tr\u00ean:<\/strong>\u0110\u1ea1i di\u1ec7n cho vi\u1ec7c t\u1ea1o ra ho\u1eb7c \u0111\u1ebfn c\u1ee7a b\u00ean tham gia.<\/li>\n
    • C\u1ea1nh d\u01b0\u1edbi:<\/strong>\u0110\u1ea1i di\u1ec7n cho vi\u1ec7c ph\u00e1 h\u1ee7y ho\u1eb7c k\u1ebft th\u00fac c\u1ee7a b\u00ean tham gia.<\/li>\n
    • Nh\u00e3n:<\/strong>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf \u0111\u1ea7u tr\u00ean c\u1ee7a \u0111\u01b0\u1eddng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed1i t\u01b0\u1ee3ng, v\u00ed d\u1ee5 nh\u01b0Giao di\u1ec7nNg\u01b0\u1eddiD\u00f9ng<\/code>, C\u01a1 s\u1edfD\u1eefli\u1ec7u<\/code>, ho\u1eb7cC\u1ed5ngThanhTo\u00e1n<\/code>.<\/li>\n<\/ul>\n

      2. T\u00e1c nh\u00e2n v\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng<\/h3>\n

      C\u00e1c b\u00ean tham gia c\u00f3 th\u1ec3 l\u00e0 t\u00e1c nh\u00e2n con ng\u01b0\u1eddi ho\u1eb7c c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ea7n m\u1ec1m. T\u00e1c nh\u00e2n th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng bi\u1ec3u t\u01b0\u1ee3ng h\u00ecnh ng\u01b0\u1eddi b\u1eb1ng que, trong khi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh ch\u1eef nh\u1eadt v\u1edbi t\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c g\u1ea1ch ch\u00e2n.<\/p>\n

      C\u00e1c b\u00ean tham gia ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n

        \n
      • \u0110\u1ed1i t\u01b0\u1ee3ng bi\u00ean:<\/strong> Giao di\u1ec7n ho\u1eb7c m\u00e0n h\u00ecnh t\u01b0\u01a1ng t\u00e1c v\u1edbi ng\u01b0\u1eddi d\u00f9ng.<\/li>\n
      • \u0110\u1ed1i t\u01b0\u1ee3ng \u0111i\u1ec1u khi\u1ec3n:<\/strong> C\u00e1c b\u1ed9 x\u1eed l\u00fd logic ph\u1ed1i h\u1ee3p c\u00e1c h\u00e0nh \u0111\u1ed9ng.<\/li>\n
      • \u0110\u1ed1i t\u01b0\u1ee3ng th\u1ef1c th\u1ec3:<\/strong> Kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u ho\u1eb7c kho l\u01b0u tr\u1eef logic kinh doanh.<\/li>\n
      • H\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i:<\/strong> C\u00e1c API ho\u1eb7c d\u1ecbch v\u1ee5 b\u00ean th\u1ee9 ba.<\/li>\n<\/ul>\n

        \u2709\ufe0f Hi\u1ec3u v\u1ec1 tin nh\u1eafn v\u00e0 giao ti\u1ebfp<\/h2>\n

        C\u00e1c tin nh\u1eafn l\u00e0 nh\u1eefng m\u0169i t\u00ean ngang k\u1ebft n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi s\u1ed1ng. Ch\u00fang cho th\u1ea5y m\u1ed9t t\u00edn hi\u1ec7u \u0111ang \u0111\u01b0\u1ee3c g\u1eedi t\u1eeb m\u1ed9t th\u00e0nh vi\u00ean n\u00e0y sang th\u00e0nh vi\u00ean kh\u00e1c. Vi\u1ec7c \u0111\u1ecdc h\u01b0\u1edbng v\u00e0 ki\u1ec3u d\u00e1ng c\u1ee7a c\u00e1c m\u0169i t\u00ean n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n.<\/p>\n

        1. H\u01b0\u1edbng v\u00e0 lo\u1ea1i<\/h3>\n

        C\u00e1c m\u0169i t\u00ean ch\u1ec9 t\u1eeb ng\u01b0\u1eddi g\u1eedi \u0111\u1ebfn ng\u01b0\u1eddi nh\u1eadn. Ki\u1ec3u d\u00e1ng c\u1ee7a m\u0169i t\u00ean cho bi\u1ebft b\u1ea3n ch\u1ea5t c\u1ee7a tin nh\u1eafn.<\/p>\n\n\n\n\n\n\n\n\n\n
        Ki\u1ec3u m\u0169i t\u00ean<\/th>\nLo\u1ea1i<\/th>\nH\u00e0nh vi<\/th>\n<\/tr>\n<\/thead>\n
        \u0110\u01b0\u1eddng li\u1ec1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean \u0111\u1ea7y<\/td>\nG\u1ecdi \u0111\u1ed3ng b\u1ed9<\/td>\nNg\u01b0\u1eddi g\u1eedi ch\u1edd cho ng\u01b0\u1eddi nh\u1eadn ho\u00e0n th\u00e0nh x\u1eed l\u00fd tr\u01b0\u1edbc khi ti\u1ebfp t\u1ee5c.<\/td>\n<\/tr>\n
        \u0110\u01b0\u1eddng li\u1ec1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf<\/td>\nTin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9<\/td>\nNg\u01b0\u1eddi g\u1eedi g\u1eedi tin nh\u1eafn v\u00e0 ti\u1ebfp t\u1ee5c m\u00e0 kh\u00f4ng ch\u1edd \u0111\u1ee3i.<\/td>\n<\/tr>\n
        \u0110\u01b0\u1eddng n\u00e9t \u0111\u1ee9t v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf<\/td>\nTin nh\u1eafn tr\u1ea3 l\u1eddi<\/td>\nNg\u01b0\u1eddi nh\u1eadn g\u1eedi ph\u1ea3n h\u1ed3i tr\u1edf l\u1ea1i ng\u01b0\u1eddi g\u1eedi.<\/td>\n<\/tr>\n
        \u0110\u01b0\u1eddng c\u00f3 h\u00ecnh tr\u00f2n \u1edf \u0111\u1ea7u<\/td>\nTin nh\u1eafn t\u1ea1o m\u1edbi<\/td>\nTh\u00f4ng b\u00e1o kh\u1edfi t\u1ea1o m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng m\u1edbi.<\/td>\n<\/tr>\n
        \u0110\u01b0\u1eddng c\u00f3 k\u00fd hi\u1ec7u \u2018X\u2019 \u1edf cu\u1ed1i<\/td>\nTin nh\u1eafn h\u1ee7y b\u1ecf<\/td>\nTh\u00f4ng b\u00e1o k\u1ebft th\u00fac c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        2. Chi ti\u1ebft tin nh\u1eafn<\/h3>\n

        M\u1ed7i tin nh\u1eafn n\u00ean bao g\u1ed3m nh\u00e3n m\u00f4 t\u1ea3 h\u00e0nh \u0111\u1ed9ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t l\u1eddi g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c, m\u1ed9t truy v\u1ea5n ho\u1eb7c m\u1ed9t s\u1ef1 ki\u1ec7n. V\u00ed d\u1ee5, \u0111\u0103ng nh\u1eadp(t\u00ean ng\u01b0\u1eddi d\u00f9ng, m\u1eadt kh\u1ea9u)<\/code> ho\u1eb7c l\u1ea5yD\u1eefLi\u1ec7u()<\/code>.<\/p>\n

        Khi \u0111\u1ecdc m\u1ed9t s\u01a1 \u0111\u1ed3, h\u00e3y theo d\u00f5i c\u00e1c tin nh\u1eafn t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi. \u0110i\u1ec1u n\u00e0y \u0111\u1ea1i di\u1ec7n cho th\u1ee9 t\u1ef1 th\u1eddi gian th\u1ef1c thi. N\u1ebfu nhi\u1ec1u tin nh\u1eafn xu\u1ea5t ph\u00e1t t\u1eeb c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng, ch\u00fang s\u1ebd \u0111\u01b0\u1ee3c x\u1eed l\u00fd theo th\u1ee9 t\u1ef1.<\/p>\n

        \u23f1\ufe0f Thanh K\u00edch Ho\u1ea1t v\u00e0 Lu\u1ed3ng \u0110i\u1ec1u Khi\u1ec3n<\/h2>\n

        C\u00e1c thanh k\u00edch ho\u1ea1t, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e1c s\u1ef1 ki\u1ec7n th\u1ef1c thi, l\u00e0 nh\u1eefng h\u00ecnh ch\u1eef nh\u1eadt m\u1ecfng \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean \u0111\u01b0\u1eddng s\u1ed1ng. Ch\u00fang ch\u1ec9 ra kho\u1ea3ng th\u1eddi gian m\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u0111ang th\u1ef1c hi\u1ec7n m\u1ed9t h\u00e0nh \u0111\u1ed9ng ho\u1eb7c \u0111ang th\u1ef1c thi t\u00edch c\u1ef1c.<\/p>\n

        1. Hi\u1ec3u thanh k\u00edch ho\u1ea1t<\/h3>\n
          \n
        • \u0110i\u1ec3m b\u1eaft \u0111\u1ea7u:<\/strong> Ph\u1ea7n tr\u00ean c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt \u0111\u00e1nh d\u1ea5u th\u1eddi \u0111i\u1ec3m \u0111\u1ed1i t\u01b0\u1ee3ng nh\u1eadn \u0111\u01b0\u1ee3c tin nh\u1eafn ho\u1eb7c b\u1eaft \u0111\u1ea7u m\u1ed9t h\u00e0nh \u0111\u1ed9ng.<\/li>\n
        • \u0110i\u1ec3m k\u1ebft th\u00fac:<\/strong> Ph\u1ea7n d\u01b0\u1edbi \u0111\u00e1nh d\u1ea5u th\u1eddi \u0111i\u1ec3m h\u00e0nh \u0111\u1ed9ng ho\u00e0n t\u1ea5t ho\u1eb7c g\u1eedi tin nh\u1eafn tr\u1ea3 v\u1ec1.<\/li>\n
        • Th\u1eddi l\u01b0\u1ee3ng:<\/strong> Chi\u1ec1u d\u00e0i c\u1ee7a thanh \u0111\u1ea1i di\u1ec7n cho th\u1eddi gian th\u1ef1c thi, so v\u1edbi c\u00e1c thanh kh\u00e1c.<\/li>\n<\/ul>\n

          C\u00e1c thanh k\u00edch ho\u1ea1t gi\u00fap tr\u1ef1c quan h\u00f3a t\u00ednh \u0111\u1ed3ng th\u1eddi. N\u1ebfu hai thanh k\u00edch ho\u1ea1t ch\u1ed3ng l\u1ea5n l\u00ean nhau tr\u00ean c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng kh\u00e1c nhau, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 c\u00e1c thao t\u00e1c \u0111\u00f3 \u0111ang di\u1ec5n ra \u0111\u1ed3ng th\u1eddi. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 c\u01a1 ch\u1ebf kh\u00f3a.<\/p>\n

          2. Logic lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n<\/h3>\n

          Lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n m\u00f4 t\u1ea3 con \u0111\u01b0\u1eddng ra quy\u1ebft \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3. Kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 ai g\u1ecdi ai, m\u00e0 c\u00f2n l\u00e0 logic \u0111i\u1ec1u khi\u1ec3n th\u1ee9 t\u1ef1 th\u1ef1c thi.<\/p>\n

            \n
          • \u0110i\u1ec1u ki\u1ec7n:<\/strong> M\u1ed9t s\u1ed1 con \u0111\u01b0\u1eddng ch\u1ec9 t\u1ed3n t\u1ea1i n\u1ebfu c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng.<\/li>\n
          • V\u00f2ng l\u1eb7p:<\/strong> M\u1ed9t s\u1ed1 h\u00e0nh \u0111\u1ed9ng l\u1eb7p l\u1ea1i cho \u0111\u1ebfn khi \u0111i\u1ec1u ki\u1ec7n thay \u0111\u1ed5i.<\/li>\n
          • Tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7:<\/strong> C\u00e1c con \u0111\u01b0\u1eddng x\u1eed l\u00fd l\u1ed7i \u0111i l\u1ec7ch kh\u1ecfi lu\u1ed3ng chu\u1ea9n.<\/li>\n<\/ul>\n

            \u0110\u1ecdc lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u00f2i h\u1ecfi b\u1ea1n ph\u1ea3i nh\u00ecn xa h\u01a1n \u0111\u01b0\u1eddng ch\u00ednh. B\u1ea1n ph\u1ea3i ki\u1ec3m tra c\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p (\u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn d\u01b0\u1edbi \u0111\u00e2y) \u0111\u1ec3 th\u1ea5y c\u00e1c con \u0111\u01b0\u1eddng thay th\u1ebf.<\/p>\n

            \ud83e\udde9 X\u1eed l\u00fd logic v\u1edbi c\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p<\/h2>\n

            C\u00e1c h\u1ec7 th\u1ed1ng th\u1ef1c t\u1ebf hi\u1ebfm khi tu\u00e2n theo m\u1ed9t con \u0111\u01b0\u1eddng th\u1eb3ng duy nh\u1ea5t. S\u01a1 \u0111\u1ed3 th\u1ee9 t\u1ef1 s\u1eed d\u1ee5ng khung \u0111\u1ec3 bao b\u1ecdc logic ph\u1ee9c t\u1ea1p. Nh\u1eefng khung n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p. Ch\u00fang cho ph\u00e9p b\u1ea1n th\u1ec3 hi\u1ec7n c\u00e1c h\u00e0nh vi thay th\u1ebf, t\u00f9y ch\u1ecdn ho\u1eb7c l\u1eb7p l\u1ea1i trong s\u01a1 \u0111\u1ed3.<\/p>\n

            1. C\u00e1c lo\u1ea1i \u0111o\u1ea1n ph\u1ed5 bi\u1ebfn<\/h3>\n\n\n\n\n\n\n\n\n\n\n
            To\u00e1n t\u1eed<\/th>\n\u00dd ngh\u0129a<\/th>\nTr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
            alt<\/strong> (Thay th\u1ebf)<\/td>\nCh\u1ecdn m\u1ed9t kh\u1ed1i d\u1ef1a tr\u00ean m\u1ed9t \u0111i\u1ec1u ki\u1ec7n.<\/td>\nN\u1ebfu ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 \u0111\u0103ng nh\u1eadp, hi\u1ec3n th\u1ecb b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n; ng\u01b0\u1ee3c l\u1ea1i, hi\u1ec3n th\u1ecb trang \u0111\u0103ng nh\u1eadp.<\/td>\n<\/tr>\n
            opt<\/strong> (T\u00f9y ch\u1ecdn)<\/td>\nHi\u1ec3n th\u1ecb h\u00e0nh vi c\u00f3 th\u1ec3 x\u1ea3y ra ho\u1eb7c kh\u00f4ng x\u1ea3y ra.<\/td>\nG\u1eedi th\u00f4ng b\u00e1o email (ch\u1ec9 khi \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh).<\/td>\n<\/tr>\n
            loop<\/strong><\/td>\nL\u1eb7p l\u1ea1i t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c bao quanh.<\/td>\nX\u1eed l\u00fd t\u1eebng m\u1ee5c trong danh s\u00e1ch m\u1ed9t c\u00e1ch tu\u1ea7n t\u1ef1.<\/td>\n<\/tr>\n
            break<\/strong><\/td>\nK\u1ebft th\u00fac lu\u1ed3ng hi\u1ec7n t\u1ea1i s\u1edbm.<\/td>\nH\u1ee7y giao d\u1ecbch n\u1ebfu thanh to\u00e1n th\u1ea5t b\u1ea1i.<\/td>\n<\/tr>\n
            par<\/strong> (Song song)<\/td>\nNhi\u1ec1u t\u01b0\u01a1ng t\u00e1c x\u1ea3y ra \u0111\u1ed3ng th\u1eddi.<\/td>\nC\u1eadp nh\u1eadt b\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 ghi nh\u1eadt k\u00fd ho\u1ea1t \u0111\u1ed9ng c\u00f9ng m\u1ed9t l\u00fac.<\/td>\n<\/tr>\n
            region<\/strong><\/td>\nX\u00e1c \u0111\u1ecbnh m\u1ed9t v\u00f9ng c\u1ee5 th\u1ec3 tr\u00ean s\u01a1 \u0111\u1ed3.<\/td>\nGom c\u00e1c h\u00e0nh \u0111\u1ed9ng li\u00ean quan d\u01b0\u1edbi m\u1ed9t ng\u1eef c\u1ea3nh \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            2. \u0110\u1ecdc khung \u0111o\u1ea1n<\/h3>\n

            C\u00e1c khung \u0111o\u1ea1n \u0111\u01b0\u1ee3c bao quanh b\u1edfi m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt n\u00e9t \u0111\u1ee9t v\u1edbi nh\u00e3n \u1edf g\u00f3c tr\u00ean b\u00ean tr\u00e1i. Nh\u00e3n x\u00e1c \u0111\u1ecbnh to\u00e1n t\u1eed (v\u00ed d\u1ee5 nh\u01b0 [alt]<\/code>). \u0110i\u1ec1u ki\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t trong d\u1ea5u ngo\u1eb7c nh\u1ecdn {}<\/code> b\u00ean trong khung.<\/p>\n

            Khi \u0111\u1ecdc m\u1ed9t alt<\/code> kh\u1ed1i, qu\u00e9t k\u1ef9 c\u00e1c \u0111i\u1ec1u ki\u1ec7n. Ch\u1ec9 c\u00f3 m\u1ed9t kh\u1ed1i \u0111\u01b0\u1ee3c th\u1ef1c thi. N\u1ebfu kh\u00f4ng c\u00f3 \u0111i\u1ec1u ki\u1ec7n n\u00e0o \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh, s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3 \u0111\u1ecbnh l\u00e0 con \u0111\u01b0\u1eddng m\u1eb7c \u0111\u1ecbnh. Trong v\u00f2ng l\u1eb7p<\/code> kh\u1ed1i, \u0111i\u1ec1u ki\u1ec7n b\u00ean trong d\u1ea5u ngo\u1eb7c nh\u1ecdn x\u00e1c \u0111\u1ecbnh khi n\u00e0o vi\u1ec7c l\u1eb7p l\u1ea1i d\u1eebng l\u1ea1i.<\/p>\n

            \ud83d\udcd6 \u0110\u1ecdc s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: C\u00e1ch ti\u1ebfp c\u1eadn t\u1eebng b\u01b0\u1edbc<\/h2>\n

            \u0110\u1ec3 ph\u00e2n t\u00edch s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, h\u00e3y tu\u00e2n theo m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ea1n kh\u00f4ng b\u1ecf s\u00f3t c\u00e1c t\u01b0\u01a1ng t\u00e1c quan tr\u1ecdng ho\u1eb7c c\u00e1c nh\u00e1nh logic.<\/p>\n

            B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh c\u00e1c b\u00ean tham gia<\/h3>\n

            B\u1eaft \u0111\u1ea7u t\u1eeb tr\u00ean c\u00f9ng. Li\u1ec7t k\u00ea t\u1ea5t c\u1ea3 c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. X\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec l\u00e0 t\u00e1c nh\u00e2n b\u00ean ngo\u00e0i v\u00e0 nh\u1eefng g\u00ec l\u00e0 th\u00e0nh ph\u1ea7n h\u1ec7 th\u1ed1ng b\u00ean trong. \u0110i\u1ec1u n\u00e0y x\u00e1c \u0111\u1ecbnh ph\u1ea1m vi t\u01b0\u01a1ng t\u00e1c.<\/p>\n

            B\u01b0\u1edbc 2: Theo d\u00f5i \u0111\u01b0\u1eddng \u0111i th\u00e0nh c\u00f4ng ch\u00ednh<\/h3>\n

            Theo d\u00f5i c\u00e1c m\u0169i t\u00ean li\u1ec1n t\u1eeb t\u00e1c nh\u00e2n \u0111\u1ea7u ti\u00ean \u0111\u1ebfn ph\u1ea3n h\u1ed3i cu\u1ed1i c\u00f9ng. B\u1ecf qua c\u00e1c kh\u1ed1i t\u00f9y ch\u1ecdn t\u1ea1m th\u1eddi. T\u1eadp trung v\u00e0o \u0111\u01b0\u1eddng \u0111i l\u00fd t\u01b0\u1edfng n\u01a1i m\u1ecdi th\u1ee9 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 mong \u0111\u1ee3i. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n x\u00e1c \u0111\u1ecbnh ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i.<\/p>\n

            B\u01b0\u1edbc 3: Ph\u00e2n t\u00edch c\u00e1c thanh k\u00edch ho\u1ea1t<\/h3>\n

            Nh\u00ecn v\u00e0o c\u00e1c h\u00ecnh ch\u1eef nh\u1eadt tr\u00ean c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. X\u00e1c \u0111\u1ecbnh \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o \u0111ang b\u1eadn v\u00e0 trong bao l\u00e2u. C\u00e1c thanh k\u00edch ho\u1ea1t d\u00e0i c\u00f3 th\u1ec3 cho th\u1ea5y x\u1eed l\u00fd n\u1eb7ng ho\u1eb7c th\u1eddi gian ch\u1edd c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n

            B\u01b0\u1edbc 4: Xem x\u00e9t c\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p<\/h3>\n

            B\u00e2y gi\u1edd, h\u00e3y nh\u00ecn v\u00e0o c\u00e1c h\u1ed9p n\u00e9t \u0111\u1ee9t. \u0110\u1ecdc ph\u1ea7n alt<\/code>, v\u00f2ng l\u1eb7p<\/code>, v\u00e0 opt<\/code> ph\u1ea7n. X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u01b0\u1eddng \u0111i thay th\u1ebf. T\u1ef1 h\u1ecfi b\u1ea3n th\u00e2n: \u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu \u0111i\u1ec1u ki\u1ec7n n\u00e0y th\u1ea5t b\u1ea1i?<\/p>\n

            B\u01b0\u1edbc 5: X\u00e1c minh th\u1eddi gian v\u00e0 tin nh\u1eafn tr\u1ea3 v\u1ec1<\/h3>\n

            Ki\u1ec3m tra c\u00e1c \u0111\u01b0\u1eddng tr\u1ea3 v\u1ec1 n\u00e9t \u0111\u1ee9t. Ch\u00fang c\u00f3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c tin nh\u1eafn \u0111\u00e3 g\u1eedi kh\u00f4ng? \u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i y\u00eau c\u1ea7u \u0111\u1ec1u c\u00f3 ph\u1ea3n h\u1ed3i ho\u1eb7c c\u01a1 ch\u1ebf th\u1eddi gian ch\u1edd ng\u1ea7m \u0111\u1ecbnh.<\/p>\n

            \ud83d\udea7 Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h2>\n

            Ngay c\u1ea3 c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 kinh nghi\u1ec7m c\u0169ng c\u00f3 th\u1ec3 hi\u1ec3u sai s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 n\u1ebfu ch\u00fang kh\u00f4ng \u0111\u01b0\u1ee3c v\u1ebd r\u00f5 r\u00e0ng. Nh\u1eadn th\u1ee9c v\u1ec1 c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn s\u1ebd gi\u00fap trong c\u1ea3 vi\u1ec7c \u0111\u1ecdc v\u00e0 t\u1ea1o t\u00e0i li\u1ec7u ch\u00ednh x\u00e1c.<\/p>\n

            1. Tr\u00e1nh s\u1ef1 m\u01a1 h\u1ed3<\/h3>\n
              \n
            • Nh\u00e3n r\u00f5 r\u00e0ng:<\/strong> M\u1ed7i tin nh\u1eafn n\u00ean c\u00f3 t\u00ean m\u00f4 t\u1ea3. Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c nh\u00e3n chung chung nh\u01b0 send()<\/code>.<\/li>\n
            • T\u00ean nh\u1ea5t qu\u00e1n:<\/strong> S\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t t\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng tr\u00ean to\u00e0n b\u1ed9 s\u01a1 \u0111\u1ed3.<\/li>\n
            • S\u1eafp x\u1ebfp logic:<\/strong>S\u1eed d\u1ee5ng khung \u0111\u1ec3 nh\u00f3m c\u00e1c t\u01b0\u01a1ng t\u00e1c li\u00ean quan m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd.<\/li>\n<\/ul>\n

              2. Qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p<\/h3>\n

              S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 c\u00f3 th\u1ec3 tr\u1edf n\u00ean r\u1ed1i r\u1eafm nhanh ch\u00f3ng. \u0110\u1ec3 duy tr\u00ec t\u00ednh d\u1ec5 \u0111\u1ecdc:<\/p>\n

                \n
              • H\u1ea1n ch\u1ebf ph\u1ea1m vi:<\/strong>\u0110\u1eebng c\u1ed1 g\u1eafng hi\u1ec3n th\u1ecb to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng trong m\u1ed9t s\u01a1 \u0111\u1ed3. Chia nh\u1ecf theo t\u00ednh n\u0103ng ho\u1eb7c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/li>\n
              • S\u1eed d\u1ee5ng tham chi\u1ebfu:<\/strong>N\u1ebfu m\u1ed9t tr\u00ecnh t\u1ef1 ph\u1ee9c t\u1ea1p, h\u00e3y tham chi\u1ebfu \u0111\u1ebfn m\u1ed9t s\u01a1 \u0111\u1ed3 ri\u00eang bi\u1ec7t thay v\u00ec v\u1ebd tr\u1ef1c ti\u1ebfp trong d\u00f2ng.<\/li>\n
              • T\u1ed1i gi\u1ea3n:<\/strong>Ch\u1ec9 bao g\u1ed3m c\u00e1c t\u01b0\u01a1ng t\u00e1c li\u00ean quan \u0111\u1ebfn tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 \u0111ang \u0111\u01b0\u1ee3c t\u00e0i li\u1ec7u h\u00f3a.<\/li>\n<\/ul>\n

                3. Nh\u1eefng hi\u1ec3u l\u1ea7m v\u1ec1 th\u1eddi gian<\/h3>\n

                M\u1eb7c d\u00f9 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 ng\u1ee5 \u00fd th\u1eddi gian ch\u1ea3y t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi, ch\u00fang kh\u00f4ng nghi\u00eam ng\u1eb7t r\u00e0ng bu\u1ed9c c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 th\u1eddi gian. Ch\u00fang kh\u00f4ng hi\u1ec3n th\u1ecb mili gi\u00e2y hay \u0111\u1ed9 tr\u1ec5 ch\u00ednh x\u00e1c. \u0110\u1eebng suy ra \u0111\u1ed9 tr\u1ec5 ch\u00ednh x\u00e1c t\u1eeb kho\u1ea3ng c\u00e1ch \u0111\u1ee9ng gi\u1eefa c\u00e1c tin nh\u1eafn.<\/p>\n

                4. V\u00f2ng ph\u1ea3n h\u1ed3i<\/h3>\n

                \u0110\u1ea3m b\u1ea3o c\u00e1c v\u00f2ng ph\u1ea3n h\u1ed3i r\u00f5 r\u00e0ng. N\u1ebfu h\u00e0nh \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng k\u00edch ho\u1ea1t c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng, h\u00e3y hi\u1ec3n th\u1ecb tin nh\u1eafn x\u00e1c nh\u1eadn quay tr\u1edf l\u1ea1i ng\u01b0\u1eddi d\u00f9ng. Nh\u1eefng tin nh\u1eafn tr\u1ea3 v\u1ec1 b\u1ecb thi\u1ebfu c\u00f3 th\u1ec3 khi\u1ebfn quy tr\u00ecnh c\u1ea3m gi\u00e1c ch\u01b0a ho\u00e0n ch\u1ec9nh.<\/p>\n

                \ud83d\udd17 T\u00edch h\u1ee3p v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 kh\u00e1c<\/h2>\n

                S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 kh\u00f4ng t\u1ed3n t\u1ea1i m\u1ed9t c\u00e1ch c\u00f4 l\u1eadp. Ch\u00fang ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t khi t\u00edch h\u1ee3p v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 UML kh\u00e1c \u0111\u1ec3 cung c\u1ea5p b\u1ee9c tranh to\u00e0n di\u1ec7n v\u1ec1 h\u1ec7 th\u1ed1ng.<\/p>\n

                  \n
                • S\u01a1 \u0111\u1ed3 l\u1edbp:<\/strong>S\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec3 hi\u1ec3u c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u00f3 s\u1eb5n tr\u00ean c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. \u0110\u1ea3m b\u1ea3o t\u00ean tin nh\u1eafn kh\u1edbp v\u1edbi k\u00fd hi\u1ec7u ph\u01b0\u01a1ng th\u1ee9c.<\/li>\n
                • S\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i:<\/strong>S\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c tr\u1ea1ng th\u00e1i n\u1ed9i b\u1ed9 c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng thay \u0111\u1ed5i trong tr\u00ecnh t\u1ef1.<\/li>\n
                • S\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n:<\/strong>S\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec3 hi\u1ec3u c\u00e1ch tri\u1ec3n khai v\u1eadt l\u00fd ho\u1eb7c logic c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng t\u00e1c trong tr\u00ecnh t\u1ef1.<\/li>\n<\/ul>\n

                  B\u1eb1ng c\u00e1ch tham chi\u1ebfu ch\u00e9o gi\u1eefa c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y, b\u1ea1n \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n gi\u1eefa c\u1ea5u tr\u00fac h\u1ec7 th\u1ed1ng v\u00e0 h\u00e0nh vi c\u1ee7a n\u00f3.<\/p>\n

                  \ud83d\udee0\ufe0f \u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng<\/h2>\n

                  \u00c1p d\u1ee5ng ki\u1ebfn th\u1ee9c n\u00e0y v\u00e0o thi\u1ebft k\u1ebf th\u1ef1c t\u1ebf gi\u00fap c\u1ea3i thi\u1ec7n s\u1ef1 h\u1ee3p t\u00e1c. Khi c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 v\u1ebd c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y, h\u1ecd bu\u1ed9c ph\u1ea3i th\u1ea3o lu\u1eadn v\u1ec1 th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng ti\u1ebft l\u1ed9 c\u00e1c m\u1ed1i ph\u1ee5 thu\u1ed9c \u1ea9n.<\/p>\n

                  V\u00ed d\u1ee5, m\u1ed9t nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 cho r\u1eb1ng cu\u1ed9c g\u1ecdi API x\u1ea3y ra tr\u01b0\u1edbc khi giao d\u1ecbch c\u01a1 s\u1edf d\u1eef li\u1ec7u. S\u01a1 \u0111\u1ed3 bu\u1ed9c h\u1ecd ph\u1ea3i \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh. N\u1ebfu giao d\u1ecbch c\u01a1 s\u1edf d\u1eef li\u1ec7u x\u1ea3y ra tr\u01b0\u1edbc, cu\u1ed9c g\u1ecdi API c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i b\u1ea5t \u0111\u1ed3ng b\u1ed9. Quy\u1ebft \u0111\u1ecbnh n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

                  H\u01a1n n\u1eefa, s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 r\u1ea5t t\u1ed1t cho ki\u1ec3m th\u1eed. C\u00e1c nh\u00e0 ki\u1ec3m th\u1eed c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 \u0111\u1ec3 t\u1ea1o c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed. M\u1ed7i tin nh\u1eafn \u0111\u1ea1i di\u1ec7n cho m\u1ed9t t\u00ecnh hu\u1ed1ng ki\u1ec3m th\u1eed ti\u1ec1m n\u0103ng. M\u1ed7i \u0111o\u1ea1n nh\u1ecf \u0111\u1ea1i di\u1ec7n cho m\u1ed9t nh\u00e1nh c\u1ea7n ki\u1ec3m tra.<\/p>\n

                  \ud83d\udcdd Nh\u1eefng suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 t\u00e0i li\u1ec7u h\u00f3a<\/h2>\n

                  T\u00e0i li\u1ec7u h\u00f3a l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh s\u1ed1ng \u0111\u1ed9ng. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 n\u00ean thay \u0111\u1ed5i theo s\u1ef1 thay \u0111\u1ed5i c\u1ee7a h\u1ec7 th\u1ed1ng. N\u1ebfu th\u00eam t\u00ednh n\u0103ng m\u1edbi, s\u01a1 \u0111\u1ed3 ph\u1ea3i \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt. Nh\u1eefng s\u01a1 \u0111\u1ed3 l\u1ed7i th\u1eddi c\u00f2n t\u1ec7 h\u01a1n c\u1ea3 kh\u00f4ng c\u00f3 s\u01a1 \u0111\u1ed3 n\u00e0o v\u00ec ch\u00fang g\u00e2y hi\u1ec3u l\u1ea7m.<\/p>\n

                  T\u1eadp trung v\u00e0o s\u1ef1 r\u00f5 r\u00e0ng h\u01a1n l\u00e0 s\u1ef1 \u0111\u1ea7y \u0111\u1ee7. M\u1ed9t s\u01a1 \u0111\u1ed3 d\u1ec5 \u0111\u1ecdc c\u00f3 gi\u00e1 tr\u1ecb h\u01a1n s\u01a1 \u0111\u1ed3 c\u1ed1 g\u1eafng ghi l\u1ea1i m\u1ecdi t\u00ecnh hu\u1ed1ng \u0111\u1eb7c bi\u1ec7t trong m\u1ed9t c\u00e1i nh\u00ecn duy nh\u1ea5t. S\u1eed d\u1ee5ng ph\u00e2n m\u1ea3nh \u0111\u1ec3 gi\u1eef lu\u1ed3ng ch\u00ednh s\u1ea1ch s\u1ebd trong khi che gi\u1ea5u \u0111\u1ed9 ph\u1ee9c t\u1ea1p trong c\u00e1c kh\u1ed1i c\u1ee5 th\u1ec3.<\/p>\n

                  B\u1eb1ng c\u00e1ch hi\u1ec3u c\u00fa ph\u00e1p c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng, ng\u1eef ngh\u0129a c\u1ee7a c\u00e1c tin nh\u1eafn v\u00e0 logic c\u1ee7a lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n, b\u1ea1n s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd cho thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. K\u1ef9 n\u0103ng n\u00e0y gi\u00fap n\u1ed1i li\u1ec1n kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c y\u00eau c\u1ea7u tr\u1eebu t\u01b0\u1ee3ng v\u00e0 tri\u1ec3n khai c\u1ee5 th\u1ec3.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  Hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c t\u01b0\u01a1ng t\u00e1c trong h\u1ec7 th\u1ed1ng \u0111\u00f2i h\u1ecfi m\u1ed9t ng\u00f4n ng\u1eef tr\u1ef1c quan r\u00f5 r\u00e0ng. Trong th\u1ebf gi\u1edbi c\u1ee7a Ng\u00f4n ng\u1eef M\u00f4 h\u00ecnh h\u00f3a \u0110\u01a1n nh\u1ea5t (UML), s\u01a1…<\/p>\n","protected":false},"author":1,"featured_media":371,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"C\u00e1ch \u0111\u1ecdc s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: Tin nh\u1eafn v\u00e0 c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng \ud83d\udcca","_yoast_wpseo_metadesc":"Th\u00e0nh th\u1ea1o s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML. Hi\u1ec3u r\u00f5 c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng, tin nh\u1eafn, lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c \u0111o\u1ea1n v\u0103n \u0111\u1ec3 t\u00e0i li\u1ec7u h\u00f3a t\u01b0\u01a1ng t\u00e1c h\u1ec7 th\u1ed1ng m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng. \ud83d\udcca","inline_featured_image":false,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[44],"tags":[49,50],"class_list":["post-370","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","tag-academic","tag-uml"],"yoast_head":"\nC\u00e1ch \u0111\u1ecdc s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: Tin nh\u1eafn v\u00e0 c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng \ud83d\udcca<\/title>\n<meta name=\"description\" content=\"Th\u00e0nh th\u1ea1o s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML. 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