{"id":289,"date":"2026-03-28T04:19:35","date_gmt":"2026-03-28T04:19:35","guid":{"rendered":"https:\/\/www.ai-diagrams.com\/vn\/scaling-documentation-c4-approach\/"},"modified":"2026-03-28T04:19:35","modified_gmt":"2026-03-28T04:19:35","slug":"scaling-documentation-c4-approach","status":"publish","type":"post","link":"https:\/\/www.ai-diagrams.com\/vn\/scaling-documentation-c4-approach\/","title":{"rendered":"M\u1edf r\u1ed9ng T\u00e0i li\u1ec7u c\u1ee7a B\u1ea1n: S\u1ee9c m\u1ea1nh c\u1ee7a C\u00e1ch ti\u1ebfp c\u1eadn C4"},"content":{"rendered":"

C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p. Khi c\u00e1c nh\u00f3m ph\u00e1t tri\u1ec3n m\u1edf r\u1ed9ng v\u00e0 c\u00e1c t\u00ednh n\u0103ng t\u00edch l\u0169y, vi\u1ec7c hi\u1ec3u c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n k\u1ebft h\u1ee3p v\u1edbi nhau tr\u1edf n\u00ean ng\u00e0y c\u00e0ng kh\u00f3 kh\u0103n. Ch\u1ec9 ri\u00eang v\u0103n b\u1ea3n t\u0129nh th\u01b0\u1eddng kh\u00f4ng th\u1ec3 n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c b\u1ea3n ch\u1ea5t \u0111\u1ed9ng c\u1ee7a ki\u1ebfn tr\u00fac hi\u1ec7n \u0111\u1ea1i. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac t\u00e0i li\u1ec7u tr\u1ef1c quan tr\u1edf n\u00ean thi\u1ebft y\u1ebfu. M\u00f4 h\u00ecnh C4 cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng theo ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n, mang l\u1ea1i s\u1ef1 r\u00f5 r\u00e0ng m\u00e0 kh\u00f4ng g\u00e2y qu\u00e1 t\u1ea3i chi ti\u1ebft.<\/p>\n

Nhi\u1ec1u t\u1ed5 ch\u1ee9c g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi t\u00e0i li\u1ec7u ho\u1eb7c qu\u00e1 s\u01a1 l\u01b0\u1ee3c \u0111\u1ec3 h\u1eefu \u00edch, ho\u1eb7c qu\u00e1 chi ti\u1ebft \u0111\u1ebfn m\u1ee9c kh\u00f4ng th\u1ec3 duy tr\u00ec. M\u00f4 h\u00ecnh C4 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh b\u1ed1n c\u1ea5p \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1ch tri\u1ec3n khai c\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y \u0111\u1ec3 c\u1ea3i thi\u1ec7n giao ti\u1ebfp, gi\u1ea3m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00e0i li\u1ec7u c\u1ee7a b\u1ea1n v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh li\u00ean quan khi h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n.<\/p>\n

\n
\"Chalkboard-style<\/figure>\n<\/div>\n

M\u00f4 h\u00ecnh C4 l\u00e0 g\u00ec? \ud83e\udde9<\/h2>\n

M\u00f4 h\u00ecnh C4 l\u00e0 m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn ph\u00e2n c\u1ea5p cho t\u00e0i li\u1ec7u ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m. N\u00f3 chia nh\u1ecf thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng th\u00e0nh b\u1ed1n l\u1edbp ri\u00eang bi\u1ec7t, m\u1ed7i l\u1edbp ph\u1ee5c v\u1ee5 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3. C\u00e1c c\u1ea5p \u0111\u1ed9 n\u00e0y tr\u1ea3i t\u1eeb b\u1ed1i c\u1ea3nh r\u1ed9ng nh\u1ea5t cho \u0111\u1ebfn chi ti\u1ebft c\u1ea5p m\u00e3 ngu\u1ed3n tinh vi nh\u1ea5t.<\/p>\n

    \n
  • C\u1ea5p \u0111\u1ed9 1: S\u01a1 \u0111\u1ed3 B\u1ed1i c\u1ea3nh H\u1ec7 th\u1ed1ng<\/strong> \u2013 Hi\u1ec3n th\u1ecb h\u1ec7 th\u1ed1ng trong m\u00f4i tr\u01b0\u1eddng c\u1ee7a n\u00f3.<\/li>\n
  • C\u1ea5p \u0111\u1ed9 2: S\u01a1 \u0111\u1ed3 Container<\/strong> \u2013 Hi\u1ec3n th\u1ecb c\u00e1c c\u00f4ng ngh\u1ec7 ch\u1ea1y th\u1eddi gian th\u1ef1c.<\/li>\n
  • C\u1ea5p \u0111\u1ed9 3: S\u01a1 \u0111\u1ed3 Th\u00e0nh ph\u1ea7n<\/strong> \u2013 Hi\u1ec3n th\u1ecb c\u1ea5u tr\u00fac b\u00ean trong.<\/li>\n
  • C\u1ea5p \u0111\u1ed9 4: S\u01a1 \u0111\u1ed3 M\u00e3 ngu\u1ed3n<\/strong> \u2013 Hi\u1ec3n th\u1ecb c\u1ea5u tr\u00fac m\u00e3 ngu\u1ed3n (t\u00f9y ch\u1ecdn).<\/li>\n<\/ul>\n

    C\u1ea5u tr\u00fac n\u00e0y cho ph\u00e9p b\u1ea1n thu nh\u1ecf ho\u1eb7c ph\u00f3ng to ki\u1ebfn tr\u00fac theo nhu c\u1ea7u. Thay v\u00ec \u00e9p m\u1ed9t s\u01a1 \u0111\u1ed3 ph\u1ea3i gi\u1ea3i th\u00edch m\u1ecdi th\u1ee9, b\u1ea1n cung c\u1ea5p g\u00f3c nh\u00ecn ph\u00f9 h\u1ee3p cho t\u1eebng ng\u01b0\u1eddi. \u0110i\u1ec1u n\u00e0y gi\u1ea3m t\u1ea3i nh\u1eadn th\u1ee9c v\u00e0 \u0111\u1ea3m b\u1ea3o c\u00e1c b\u00ean li\u00ean quan t\u00ecm th\u1ea5y th\u00f4ng tin h\u1ecd c\u1ea7n m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/p>\n

    T\u1ea1i sao T\u00e0i li\u1ec7u Th\u1ea5t b\u1ea1i Khi M\u1edf R\u1ed9ng \ud83d\udcc9<\/h2>\n

    Tr\u01b0\u1edbc khi \u0111i v\u00e0o gi\u1ea3i ph\u00e1p, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn khi\u1ebfn t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt g\u1eb7p kh\u00f3 kh\u0103n. Khi h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n, t\u00e0i li\u1ec7u th\u01b0\u1eddng tr\u1edf n\u00ean l\u1ed7i th\u1eddi ho\u1eb7c kh\u00f4ng c\u00f2n s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u00fd do ch\u00ednh khi\u1ebfn \u0111i\u1ec1u n\u00e0y x\u1ea3y ra:<\/p>\n

      \n
    • Thi\u1ebft k\u1ebf qu\u00e1 m\u1ee9c t\u1eeb \u0111\u1ea7u<\/strong> \u2013 C\u00e1c nh\u00f3m th\u01b0\u1eddng t\u1ea1o s\u01a1 \u0111\u1ed3 m\u00e3 ngu\u1ed3n chi ti\u1ebft tr\u01b0\u1edbc khi ki\u1ebfn tr\u00fac \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn vi\u1ec7c c\u1eadp nh\u1eadt li\u00ean t\u1ee5c.<\/li>\n
    • Thi\u1ebfu tr\u1eebu t\u01b0\u1ee3ng<\/strong> \u2013 M\u1ed9t s\u01a1 \u0111\u1ed3 duy nh\u1ea5t c\u1ed1 g\u1eafng th\u1ec3 hi\u1ec7n m\u1ecdi th\u1ee9 tr\u1edf th\u00e0nh m\u1ed9t m\u1edb h\u1ed7n \u0111\u1ed9n m\u00e0 kh\u00f4ng ai \u0111\u1ecdc.<\/li>\n
    • N\u1ed9i dung T\u0129nh<\/strong> \u2013 T\u00e0i li\u1ec7u \u0111\u01b0\u1ee3c vi\u1ebft d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n m\u00e0 kh\u00f4ng c\u00f3 th\u1ee9 b\u1eadc tr\u1ef1c quan th\u00ec kh\u00f3 \u0111\u1ecdc nhanh.<\/li>\n
    • Sai l\u1ec7ch Vai tr\u00f2<\/strong> \u2013 M\u1ed9t nh\u00e0 ph\u00e1t tri\u1ec3n c\u1ea7n th\u00f4ng tin kh\u00e1c v\u1edbi ng\u01b0\u1eddi qu\u1ea3n l\u00fd s\u1ea3n ph\u1ea9m ho\u1eb7c kh\u00e1ch h\u00e0ng.<\/li>\n<\/ul>\n

      M\u00f4 h\u00ecnh C4 gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch bu\u1ed9c ph\u1ea3i tu\u00e2n theo c\u00e1c c\u1ea5p \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng. B\u1ea1n kh\u00f4ng hi\u1ec3n th\u1ecb chi ti\u1ebft m\u00e3 ngu\u1ed3n cho m\u1ed9t b\u00ean li\u00ean quan ch\u1ec9 c\u1ea7n bi\u1ebft h\u1ec7 th\u1ed1ng t\u01b0\u01a1ng t\u00e1c v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i nh\u01b0 th\u1ebf n\u00e0o. B\u1ea1n c\u0169ng kh\u00f4ng hi\u1ec3n th\u1ecb s\u01a1 \u0111\u1ed3 container cho ng\u01b0\u1eddi ch\u1ec9 quan t\u00e2m \u0111\u1ebfn b\u1ed1i c\u1ea3nh kinh doanh. Vi\u1ec7c ph\u00f9 h\u1ee3p m\u1ee9c \u0111\u1ed9 chi ti\u1ebft v\u1edbi \u0111\u1ed1i t\u01b0\u1ee3ng gi\u00fap t\u00e0i li\u1ec7u lu\u00f4n s\u1ea1ch s\u1ebd v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec.<\/p>\n

      C\u1ea5p \u0111\u1ed9 1: S\u01a1 \u0111\u1ed3 B\u1ed1i c\u1ea3nh H\u1ec7 th\u1ed1ng \ud83c\udf0d<\/h2>\n

      S\u01a1 \u0111\u1ed3 B\u1ed1i c\u1ea3nh H\u1ec7 th\u1ed1ng l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u cho b\u1ea5t k\u1ef3 t\u00e0i li\u1ec7u ki\u1ebfn tr\u00fac n\u00e0o. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 h\u1ec7 th\u1ed1ng b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng v\u00e0 c\u00e1ch n\u00f3 li\u00ean quan \u0111\u1ebfn con ng\u01b0\u1eddi v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng xung quanh.<\/p>\n

      C\u00e1c Y\u1ebfu t\u1ed1 Ch\u00ednh<\/h3>\n
        \n
      • H\u1ec7 th\u1ed1ng Ph\u1ea7n m\u1ec1m<\/strong> \u2013 \u1ee8ng d\u1ee5ng ho\u1eb7c d\u1ecbch v\u1ee5 c\u1ee7a b\u1ea1n, \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u1ed9p duy nh\u1ea5t.<\/li>\n
      • Ng\u01b0\u1eddi d\u00f9ng<\/strong> \u2013 Nh\u1eefng ng\u01b0\u1eddi ho\u1eb7c vai tr\u00f2 t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng.<\/li>\n
      • H\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i<\/strong> \u2013 C\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c, c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c d\u1ecbch v\u1ee5 m\u00e0 h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n giao ti\u1ebfp v\u1edbi.<\/li>\n
      • M\u1ed1i quan h\u1ec7<\/strong> \u2013 C\u00e1c \u0111\u01b0\u1eddng k\u1ebb th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u ho\u1eb7c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n.<\/li>\n<\/ul>\n

        Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng<\/h3>\n

        S\u01a1 \u0111\u1ed3 n\u00e0y l\u00fd t\u01b0\u1edfng \u0111\u1ec3 gi\u1edbi thi\u1ec7u h\u1ec7 th\u1ed1ng cho th\u00e0nh vi\u00ean m\u1edbi trong nh\u00f3m, thuy\u1ebft ph\u1ee5c c\u00e1c b\u00ean li\u00ean quan v\u1ec1 m\u1ed9t d\u1ef1 \u00e1n, ho\u1eb7c gi\u1ea3i th\u00edch h\u1ec7 th\u1ed1ng cho kh\u00e1ch h\u00e0ng. N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi: \u201cH\u1ec7 th\u1ed1ng n\u00e0y l\u00e0m g\u00ec, v\u00e0 ai l\u00e0 ng\u01b0\u1eddi s\u1eed d\u1ee5ng n\u00f3?\u201d<\/p>\n

        Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h3>\n
          \n
        • Gi\u1eef s\u1ed1 l\u01b0\u1ee3ng h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u (th\u01b0\u1eddng t\u1eeb 3 \u0111\u1ebfn 6).<\/li>\n
        • S\u1eed d\u1ee5ng nh\u00e3n r\u00f5 r\u00e0ng cho lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n
        • Tr\u00e1nh hi\u1ec3n th\u1ecb logic n\u1ed9i b\u1ed9 ho\u1eb7c b\u1ea3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n
        • T\u1eadp trung v\u00e0o kh\u1ea3 n\u0103ng kinh doanh thay v\u00ec c\u00e1c giao th\u1ee9c k\u1ef9 thu\u1eadt.<\/li>\n<\/ul>\n

          C\u1ea5p \u0111\u1ed9 2: S\u01a1 \u0111\u1ed3 Container \ud83d\udce6<\/h2>\n

          Sau khi \u0111\u00e3 x\u00e1c l\u1eadp b\u1ed1i c\u1ea3nh, b\u1ea1n s\u1ebd \u0111i s\u00e2u v\u00e0o ch\u00ednh h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 Container ti\u1ebft l\u1ed9 c\u00e1c c\u00f4ng ngh\u1ec7 ch\u1ea1y \u1edf c\u1ea5p \u0111\u1ed9 cao. M\u1ed9t container l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb c\u00f3 th\u1ec3 tri\u1ec3n khai, ch\u1eb3ng h\u1ea1n nh\u01b0 \u1ee9ng d\u1ee5ng web, \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng, microservice ho\u1eb7c c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n

          C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh<\/h3>\n
            \n
          • Container<\/strong> \u2013 C\u00e1c m\u00f4i tr\u01b0\u1eddng ch\u1ea1y ri\u00eang bi\u1ec7t (v\u00ed d\u1ee5: \u1ee8ng d\u1ee5ng web, \u1ee8ng d\u1ee5ng di \u0111\u1ed9ng, H\u00e0m kh\u00f4ng m\u00e1y ch\u1ee7).<\/li>\n
          • C\u00f4ng ngh\u1ec7<\/strong> \u2013 Lo\u1ea1i c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng (v\u00ed d\u1ee5: Java, Node.js, PostgreSQL), kh\u00f4ng c\u1ea7n n\u00eau t\u00ean s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3 c\u1ee7a nh\u00e0 cung c\u1ea5p.<\/li>\n
          • K\u1ebft n\u1ed1i<\/strong> \u2013 C\u00e1ch c\u00e1c container giao ti\u1ebfp v\u1edbi nhau (v\u00ed d\u1ee5: HTTP, TCP, H\u00e0ng \u0111\u1ee3i tin nh\u1eafn).<\/li>\n<\/ul>\n

            Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng<\/h3>\n

            C\u1ea5p \u0111\u1ed9 n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u1ea7n hi\u1ec3u ki\u1ebfn tr\u00fac tri\u1ec3n khai. N\u00f3 gi\u00fap x\u00e1c \u0111\u1ecbnh n\u01a1i m\u00e3 ngu\u1ed3n \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 c\u00e1ch c\u00e1c d\u1ecbch v\u1ee5 giao ti\u1ebfp v\u1edbi nhau. N\u00f3 c\u0169ng h\u1eefu \u00edch cho c\u00e1c \u0111\u1ed9i DevOps \u0111ang l\u00ean k\u1ebf ho\u1ea1ch h\u1ea1 t\u1ea7ng.<\/p>\n

            Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h3>\n
              \n
            • S\u1eafp x\u1ebfp c\u00e1c container li\u00ean quan m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd.<\/li>\n
            • Ch\u1ec9 r\u00f5 h\u01b0\u1edbng lu\u1ed3ng d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng.<\/li>\n
            • S\u1eed d\u1ee5ng c\u00e1c h\u00ecnh d\u1ea1ng nh\u1ea5t qu\u00e1n cho container \u0111\u1ec3 \u00e1m ch\u1ec9 lo\u1ea1i c\u1ee7a ch\u00fang.<\/li>\n
            • Ch\u01b0a c\u1ea7n bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n n\u1ed9i b\u1ed9.<\/li>\n<\/ul>\n

              So s\u00e1nh gi\u1eefa c\u00e1c c\u1ea5p \u0111\u1ed9 1 v\u00e0 2<\/h3>\n\n\n\n\n\n\n\n
              T\u00ednh n\u0103ng<\/th>\nM\u1ee9c 1: B\u1ed1i c\u1ea3nh<\/th>\nM\u1ee9c 2: C\u00e1c container<\/th>\n<\/tr>\n<\/thead>\n
              Tr\u1ecdng t\u00e2m<\/strong><\/td>\nB\u1ed1i c\u1ea3nh kinh doanh<\/td>\nTh\u1eddi \u0111i\u1ec3m ch\u1ea1y k\u1ef9 thu\u1eadt<\/td>\n<\/tr>\n
              \u0110\u1ed1i t\u01b0\u1ee3ng<\/strong><\/td>\nC\u00e1c b\u00ean li\u00ean quan, kh\u00e1ch h\u00e0ng<\/td>\nL\u1eadp tr\u00ecnh vi\u00ean, Ki\u1ebfn tr\u00fac s\u01b0<\/td>\n<\/tr>\n
              Chi ti\u1ebft<\/strong><\/td>\nH\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t h\u1ed9p \u0111en<\/td>\nH\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u1ee9ng d\u1ee5ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              M\u1ee9c 3: S\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n \ud83e\uddf1<\/h2>\n

              B\u00ean trong m\u1ed9t container, th\u01b0\u1eddng c\u00f3 m\u1ed9t c\u1ea5u tr\u00fac m\u00e3 ngu\u1ed3n ph\u1ee9c t\u1ea1p. S\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n ph\u00f3ng to v\u00e0o m\u1ed9t container c\u1ee5 th\u1ec3 \u0111\u1ec3 hi\u1ec3n th\u1ecb c\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a n\u00f3. M\u1ed9t th\u00e0nh ph\u1ea7n l\u00e0 m\u1ed9t nh\u00f3m ch\u1ee9c n\u0103ng logic, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t d\u1ecbch v\u1ee5, m\u1ed9t module ho\u1eb7c m\u1ed9t th\u01b0 vi\u1ec7n.<\/p>\n

              C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh<\/h3>\n
                \n
              • Th\u00e0nh ph\u1ea7n<\/strong> \u2013 C\u00e1c ph\u1ea7n logic c\u1ee7a container (v\u00ed d\u1ee5: D\u1ecbch v\u1ee5 Ng\u01b0\u1eddi d\u00f9ng, B\u1ed9 x\u1eed l\u00fd \u0110\u01a1n h\u00e0ng).<\/li>\n
              • Giao di\u1ec7n<\/strong> \u2013 C\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n c\u00f4ng khai ch\u1ee9c n\u0103ng cho c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c.<\/li>\n
              • Ph\u1ee5 thu\u1ed9c<\/strong> \u2013 C\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ee5 thu\u1ed9c l\u1eabn nhau.<\/li>\n<\/ul>\n

                Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng<\/h3>\n

                \u0110\u00e2y l\u00e0 s\u01a1 \u0111\u1ed3 chi ti\u1ebft nh\u1ea5t \u0111\u1ed1i v\u1edbi ph\u1ea7n l\u1edbn c\u00e1c \u0111\u1ed9i nh\u00f3m. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c cu\u1ed9c th\u1ea3o lu\u1eadn thi\u1ebft k\u1ebf, l\u1eadp k\u1ebf ho\u1ea1ch m\u00e3 ngu\u1ed3n v\u00e0 gi\u1ea3i th\u00edch c\u00e1ch tri\u1ec3n khai c\u00e1c t\u00ednh n\u0103ng c\u1ee5 th\u1ec3. N\u00f3 gi\u00fap l\u1ea5p \u0111\u1ea7y kho\u1ea3ng c\u00e1ch gi\u1eefa ki\u1ebfn tr\u00fac c\u1ea5p cao v\u00e0 m\u00e3 ngu\u1ed3n th\u1ef1c t\u1ebf.<\/p>\n

                C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h3>\n
                  \n
                • Gi\u1eef s\u1ed1 l\u01b0\u1ee3ng th\u00e0nh ph\u1ea7n \u1edf m\u1ee9c c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t (th\u01b0\u1eddng d\u01b0\u1edbi 10).<\/li>\n
                • T\u1eadp trung v\u00e0o h\u00e0nh vi v\u00e0 d\u1eef li\u1ec7u, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c l\u1edbp m\u00e3 ngu\u1ed3n.<\/li>\n
                • S\u1eed d\u1ee5ng k\u00fd hi\u1ec7u chu\u1ea9n cho c\u00e1c giao di\u1ec7n (v\u00ed d\u1ee5: cung c\u1ea5p v\u00e0 y\u00eau c\u1ea7u).<\/li>\n
                • \u0110\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 ph\u1ea3n \u00e1nh \u0111\u00fang m\u00e3 ngu\u1ed3n hi\u1ec7n t\u1ea1i.<\/li>\n<\/ul>\n

                  M\u1ee9c 4: S\u01a1 \u0111\u1ed3 m\u00e3 ngu\u1ed3n \ud83d\udcbb<\/h2>\n

                  M\u1ee9c 4 l\u00e0 t\u00f9y ch\u1ecdn v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00e0nh cho c\u00e1c thu\u1eadt to\u00e1n ph\u1ee9c t\u1ea1p ho\u1eb7c c\u00e1c th\u01b0 vi\u1ec7n c\u1ee5 th\u1ec3. N\u00f3 \u00e1nh x\u1ea1 c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u1ebfn c\u00e1c c\u1ea5u tr\u00fac m\u00e3 ngu\u1ed3n th\u1ef1c t\u1ebf nh\u01b0 l\u1edbp, h\u00e0m ho\u1eb7c b\u1ea3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n

                  Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng n\u00f3<\/h3>\n

                  H\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng kh\u00f4ng c\u1ea7n s\u01a1 \u0111\u1ed3 c\u1ea5p m\u00e3 ngu\u1ed3n. N\u00f3 qu\u00e1 chi ti\u1ebft v\u00e0 thay \u0111\u1ed5i qu\u00e1 th\u01b0\u1eddng xuy\u00ean. Ch\u1ec9 s\u1eed d\u1ee5ng khi b\u1ea1n c\u1ea7n gi\u1ea3i th\u00edch m\u1ed9t thu\u1eadt to\u00e1n c\u1ee5 th\u1ec3, m\u1ed9t m\u00f4 h\u00ecnh d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p ho\u1eb7c m\u1ed9t logic t\u00edch h\u1ee3p c\u1ee5 th\u1ec3.<\/p>\n

                  C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/h3>\n
                    \n
                  • Kh\u00f4ng s\u1eed d\u1ee5ng n\u00f3 nh\u01b0 ngu\u1ed3n t\u00e0i li\u1ec7u ch\u00ednh.<\/li>\n
                  • \u0110\u1ea3m b\u1ea3o n\u00f3 lu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 v\u1edbi m\u00e3 ngu\u1ed3n.<\/li>\n
                  • C\u00e2n nh\u1eafc s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 t\u1ea1o ra n\u00f3 n\u1ebfu c\u00f3 th\u1ec3.<\/li>\n
                  • H\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ec9 cho logic \u0111\u01b0\u1eddng \u0111i quan tr\u1ecdng.<\/li>\n<\/ul>\n

                    Tri\u1ec3n khai C4 trong quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a b\u1ea1n \ud83d\udee0\ufe0f<\/h2>\n

                    Vi\u1ec7c \u00e1p d\u1ee5ng m\u00f4 h\u00ecnh C4 \u0111\u00f2i h\u1ecfi s\u1ef1 thay \u0111\u1ed5i trong c\u00e1ch ti\u1ebfp c\u1eadn t\u00e0i li\u1ec7u h\u00f3a. N\u00f3 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ebd c\u00e1c h\u00ecnh h\u1ed9p; m\u00e0 l\u00e0 qu\u1ea3n l\u00fd th\u1ee9 b\u1eadc th\u00f4ng tin. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn th\u1ef1c t\u1ebf \u0111\u1ec3 tri\u1ec3n khai.<\/p>\n

                    1. B\u1eaft \u0111\u1ea7u b\u1eb1ng b\u1ed1i c\u1ea3nh<\/h3>\n

                    B\u1eaft \u0111\u1ea7u m\u1ed7i d\u1ef1 \u00e1n m\u1edbi b\u1eb1ng c\u00e1ch t\u1ea1o s\u01a1 \u0111\u1ed3 B\u1ed1i c\u1ea3nh H\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi v\u00e0 \u0111\u1ecbnh ngh\u0129a ph\u1ea1m vi. N\u1ebfu b\u1ea1n kh\u00f4ng th\u1ec3 v\u1ebd s\u01a1 \u0111\u1ed3 n\u00e0y, th\u00ec ph\u1ea1m vi c\u00f3 l\u1ebd qu\u00e1 m\u01a1 h\u1ed3.<\/p>\n

                    2. Ti\u1ebfn tri\u1ec3n d\u1ea7n l\u00ean<\/h3>\n

                    Khi d\u1ef1 \u00e1n ph\u00e1t tri\u1ec3n, h\u00e3y th\u00eam s\u01a1 \u0111\u1ed3 Container v\u00e0 Component. Kh\u00f4ng t\u1ea1o t\u1ea5t c\u1ea3 c\u00e1c c\u1ea5p c\u00f9ng m\u1ed9t l\u00fac. T\u1ea1o ch\u00fang khi c\u1ea7n thi\u1ebft cho c\u00e1c t\u00ednh n\u0103ng ho\u1eb7c module c\u1ee5 th\u1ec3.<\/p>\n

                    3. Chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o tr\u00ec<\/h3>\n

                    T\u00e0i li\u1ec7u s\u1ebd ch\u1ebft n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt. T\u00edch h\u1ee3p vi\u1ec7c c\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 v\u00e0o quy tr\u00ecnh ph\u00e1t tri\u1ec3n c\u1ee7a b\u1ea1n.<\/p>\n

                      \n
                    • C\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra m\u00e3 ngu\u1ed3n.<\/li>\n
                    • Li\u00ean k\u1ebft s\u01a1 \u0111\u1ed3 v\u1edbi c\u00e1c y\u00eau c\u1ea7u k\u00e9o (pull requests).<\/li>\n
                    • Giao tr\u00e1ch nhi\u1ec7m cho c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ee5 th\u1ec3 cho c\u00e1c tr\u01b0\u1edfng nh\u00f3m.<\/li>\n<\/ul>\n

                      4. L\u1ef1a ch\u1ecdn c\u00f4ng c\u1ee5<\/h3>\n

                      Ch\u1ecdn c\u00e1c c\u00f4ng c\u1ee5 v\u1ebd s\u01a1 \u0111\u1ed3 h\u1ed7 tr\u1ee3 \u0111\u1ecbnh ngh\u0129a b\u1eb1ng v\u0103n b\u1ea3n (gi\u1ed1ng nh\u01b0 m\u00e3 ngu\u1ed3n) thay v\u00ec ch\u1ec9 k\u00e9o th\u1ea3. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n v\u00e0 c\u1eadp nh\u1eadt d\u1ec5 d\u00e0ng h\u01a1n. \u0110\u1ea3m b\u1ea3o c\u00f4ng c\u1ee5 \u0111\u00f3 h\u1ed7 tr\u1ee3 xu\u1ea5t ra c\u00e1c \u0111\u1ecbnh d\u1ea1ng chu\u1ea9n nh\u01b0 PNG ho\u1eb7c SVG cho c\u00e1c trang t\u00e0i li\u1ec7u.<\/p>\n

                      Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang \u26a0\ufe0f<\/h2>\n

                      Ngay c\u1ea3 v\u1edbi m\u00f4 h\u00ecnh c\u00f3 c\u1ea5u tr\u00fac, c\u00e1c \u0111\u1ed9i nh\u00f3m v\u1eabn c\u00f3 th\u1ec3 m\u1eafc sai l\u1ea7m. Nh\u1eadn th\u1ee9c v\u1ec1 nh\u1eefng sai l\u1ea7m n\u00e0y gi\u00fap duy tr\u00ec m\u1ed9t h\u1ec7 sinh th\u00e1i t\u00e0i li\u1ec7u l\u00e0nh m\u1ea1nh.<\/p>\n

                      Sai l\u1ea7m 1: S\u01a1 \u0111\u1ed3 \u201c\u0110\u00e1nh b\u00f3ng qu\u00e1 m\u1ee9c\u201d<\/h3>\n

                      T\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 tr\u00f4ng ho\u00e0n h\u1ea3o nh\u01b0ng kh\u00f4ng ph\u1ea3n \u00e1nh th\u1ef1c t\u1ebf. M\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u1eb9p c\u0169ng v\u00f4 d\u1ee5ng n\u1ebfu n\u00f3 sai.<\/p>\n

                        \n
                      • Gi\u1ea3i ph\u00e1p:<\/strong>Xem s\u01a1 \u0111\u1ed3 nh\u01b0 m\u00e3 ngu\u1ed3n. \u0110\u00e1nh gi\u00e1 ch\u00fang th\u01b0\u1eddng xuy\u00ean.<\/li>\n<\/ul>\n

                        Sai l\u1ea7m 2: B\u1ecf qua \u0111\u1ed1i t\u01b0\u1ee3ng ng\u01b0\u1eddi xem<\/h3>\n

                        Hi\u1ec3n th\u1ecb s\u01a1 \u0111\u1ed3 Th\u00e0nh ph\u1ea7n cho kh\u00e1ch h\u00e0ng. H\u1ecd kh\u00f4ng c\u1ea7n ph\u1ea3i xem c\u00e1c d\u1ecbch v\u1ee5 vi m\u00f4 c\u1ee7a b\u1ea1n.<\/p>\n

                          \n
                        • Gi\u1ea3i ph\u00e1p:<\/strong>T\u1ea1o m\u1ed9t \u201cG\u00f3c nh\u00ecn\u201d cho t\u1eebng \u0111\u1ed1i t\u01b0\u1ee3ng. S\u1eed d\u1ee5ng c\u00e1c c\u1ea5p \u0111\u1ed9 C4 \u0111\u1ec3 l\u1ecdc th\u00f4ng tin.<\/li>\n<\/ul>\n

                          T\u00ecnh hu\u1ed1ng sai l\u1ea7m 3: Trop tr\u1eebu t\u01b0\u1ee3ng<\/h3>\n

                          T\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 qu\u00e1 m\u01a1 h\u1ed3 \u0111\u1ec3 kh\u00f4ng h\u1eefu \u00edch. N\u1ebfu m\u1ed9t h\u1ed9p ghi \u201cH\u1ec7 th\u1ed1ng\u201d, \u0111i\u1ec1u \u0111\u00f3 ch\u1eb3ng n\u00f3i g\u00ec v\u1edbi nh\u00e0 ph\u00e1t tri\u1ec3n c\u1ea3.<\/p>\n

                            \n
                          • Gi\u1ea3i ph\u00e1p:<\/strong>\u0110\u1ea3m b\u1ea3o nh\u00e3n m\u00f4 t\u1ea3 ch\u1ee9c n\u0103ng, ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 danh t\u00ednh.<\/li>\n<\/ul>\n

                            T\u00ecnh hu\u1ed1ng sai l\u1ea7m 4: L\u01b0u tr\u1eef t\u0129nh<\/h3>\n

                            Gi\u1eef c\u00e1c s\u01a1 \u0111\u1ed3 trong m\u1ed9t th\u01b0 m\u1ee5c m\u00e0 kh\u00f4ng c\u00f3 li\u00ean k\u1ebft \u0111\u1ebfn m\u00e3 ngu\u1ed3n.<\/p>\n

                              \n
                            • Gi\u1ea3i ph\u00e1p:<\/strong>L\u01b0u tr\u1eef s\u01a1 \u0111\u1ed3 c\u00f9ng v\u1edbi m\u00e3 ngu\u1ed3n ho\u1eb7c trong kho l\u01b0u tr\u1eef d\u1ef1 \u00e1n.<\/li>\n<\/ul>\n

                              \u0110o l\u01b0\u1eddng th\u00e0nh c\u00f4ng \ud83d\udcca<\/h2>\n

                              L\u00e0m sao b\u1ea1n bi\u1ebft chi\u1ebfn l\u01b0\u1ee3c t\u00e0i li\u1ec7u c\u1ee7a m\u00ecnh c\u00f3 hi\u1ec7u qu\u1ea3 kh\u00f4ng? H\u00e3y t\u00ecm nh\u1eefng d\u1ea5u hi\u1ec7u sau.<\/p>\n

                                \n
                              • Th\u1eddi gian l\u00e0m quen<\/strong> \u2013 C\u00f3 m\u1ea5t \u00edt th\u1eddi gian h\u01a1n \u0111\u1ec3 c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n m\u1edbi hi\u1ec3u h\u1ec7 th\u1ed1ng kh\u00f4ng?<\/li>\n
                              • Gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng c\u00e2u h\u1ecfi<\/strong> \u2013 C\u00f3 \u00edt c\u00e2u h\u1ecfi h\u01a1n v\u1ec1 lu\u1ed3ng h\u1ec7 th\u1ed1ng trong c\u00e1c cu\u1ed9c h\u1ecdp kh\u00f4ng?<\/li>\n
                              • T\u1ea7n su\u1ea5t c\u1eadp nh\u1eadt<\/strong> \u2013 C\u00e1c s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean hay b\u1ecb b\u1ecf qu\u00ean?<\/li>\n
                              • \u0110\u1ed9 r\u00f5 r\u00e0ng<\/strong> \u2013 C\u00e1c b\u00ean li\u00ean quan c\u00f3 hi\u1ec3u ki\u1ebfn tr\u00fac m\u00e0 kh\u00f4ng c\u1ea7n gi\u1ea3i th\u00edch b\u1eb1ng l\u1eddi kh\u00f4ng?<\/li>\n<\/ul>\n

                                Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 giao ti\u1ebfp ki\u1ebfn tr\u00fac \ud83d\udcac<\/h2>\n

                                T\u00e0i li\u1ec7u kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m giao n\u1ed9p; n\u00f3 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp. M\u00f4 h\u00ecnh C4 cung c\u1ea5p m\u1ed9t khung \u0111\u1ec3 l\u00e0m cho giao ti\u1ebfp \u0111\u00f3 hi\u1ec7u qu\u1ea3. B\u1eb1ng c\u00e1ch t\u1ed5 ch\u1ee9c th\u00f4ng tin th\u00e0nh c\u00e1c l\u1edbp logic, b\u1ea1n gi\u1ea3m nhi\u1ec5u v\u00e0 l\u00e0m n\u1ed5i b\u1eadt t\u00edn hi\u1ec7u. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y m\u1edf r\u1ed9ng theo quy m\u00f4 \u0111\u1ed9i ng\u0169 v\u00e0 h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n.<\/p>\n

                                B\u1eaft \u0111\u1ea7u b\u1eb1ng b\u1ee9c tranh t\u1ed5ng th\u1ec3. X\u00e1c \u0111\u1ecbnh b\u1ed1i c\u1ea3nh. Sau \u0111\u00f3, ch\u1ec9 \u0111i s\u00e2u khi th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft. K\u1ef7 lu\u1eadt n\u00e0y ng\u0103n ng\u1eeba t\u00ecnh tr\u1ea1ng bloat t\u00e0i li\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ed7i s\u01a1 \u0111\u1ed3 \u0111\u1ec1u c\u00f3 m\u1ee5c \u0111\u00edch. Khi ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n ph\u00e1t tri\u1ec3n, t\u00e0i li\u1ec7u c\u1ee7a b\u1ea1n c\u0169ng n\u00ean ph\u00e1t tri\u1ec3n theo, duy tr\u00ec c\u00e1i nh\u00ecn r\u00f5 r\u00e0ng v\u1ec1 h\u1ec7 th\u1ed1ng \u1edf m\u1ecdi c\u1ea5p \u0111\u1ed9.<\/p>\n

                                \u0110\u1ea7u t\u01b0 v\u00e0o t\u00e0i li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac mang l\u1ea1i l\u1ee3i \u00edch l\u1edbn trong vi\u1ec7c gi\u1ea3m n\u1ee3 k\u1ef9 thu\u1eadt v\u00e0 c\u1ea3i thi\u1ec7n s\u1ef1 \u0111\u1ed3ng thu\u1eadn trong \u0111\u1ed9i nh\u00f3m. \u0110\u00e2y l\u00e0 m\u1ed9t th\u1ef1c h\u00e0nh n\u1ec1n t\u1ea3ng cho b\u1ea5t k\u1ef3 t\u1ed5 ch\u1ee9c k\u1ef9 thu\u1eadt n\u00e0o h\u01b0\u1edbng \u0111\u1ebfn s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 ph\u00e1t tri\u1ec3n l\u00e2u d\u00e0i.<\/p>\n","protected":false},"excerpt":{"rendered":"

                                C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p. Khi c\u00e1c nh\u00f3m ph\u00e1t tri\u1ec3n m\u1edf r\u1ed9ng v\u00e0 c\u00e1c t\u00ednh n\u0103ng t\u00edch l\u0169y, vi\u1ec7c hi\u1ec3u c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n k\u1ebft h\u1ee3p…<\/p>\n","protected":false},"author":1,"featured_media":290,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"M\u1edf r\u1ed9ng t\u00e0i li\u1ec7u: S\u1ee9c m\u1ea1nh c\u1ee7a c\u00e1ch ti\u1ebfp c\u1eadn C4","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch m\u1edf r\u1ed9ng t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh C4. 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