{"id":9140,"date":"2025-03-27T14:32:33","date_gmt":"2025-03-27T07:32:33","guid":{"rendered":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/?p=9140"},"modified":"2026-03-27T17:21:25","modified_gmt":"2026-03-27T10:21:25","slug":"mongodb-la-gi","status":"publish","type":"post","link":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/tu-van-nghe-nghiep\/mongodb-la-gi","title":{"rendered":"MongoDB l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf"},"content":{"rendered":"\n

Nhu c\u1ea7u v\u1ec1 c\u00e1c h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u linh ho\u1ea1t v\u00e0 d\u1ec5 m\u1edf r\u1ed9ng ng\u00e0y c\u00e0ng tr\u1edf n\u00ean quan tr\u1ecdng. MongoDB l\u00e0 g\u00ec<\/strong>? \u0110\u00e2y l\u00e0 c\u00e2u h\u1ecfi \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 doanh nghi\u1ec7p \u0111\u1eb7t ra khi t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3. V\u1edbi kh\u1ea3 n\u0103ng x\u1eed l\u00fd d\u1eef li\u1ec7u l\u1edbn v\u00e0 s\u1ef1 linh ho\u1ea1t trong c\u1ea5u tr\u00fac, MongoDB n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i, t\u1eeb web \u0111\u1ebfn ph\u00e2n t\u00edch d\u1eef li\u1ec7u. M\u1eddi c\u00e1c b\u1ea1n c\u00f9ng t\u00ecm hi\u1ec3u b\u00e0i vi\u1ebft sau nh\u00e9.<\/p>\n\n\n\n

\"MongoDB<\/figure>\n\n\n\n

MongoDB l\u00e0 g\u00ec?<\/h2>\n\n\n\n
\n

MongoDB, hay c\u00f2n g\u1ecdi l\u00e0 Mongo Database, l\u00e0 ph\u1ea7n m\u1ec1m c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u00e3 ngu\u1ed3n m\u1edf (open-source) theo m\u00f4 h\u00ecnh NoSQL, h\u1ed7 tr\u1ee3 nhi\u1ec1u n\u1ec1n t\u1ea3ng l\u1eadp tr\u00ecnh v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo ki\u1ec3u h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng.<\/strong><\/p>\n<\/blockquote>\n\n\n\n

Trong MongoDB, c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u (g\u1ecdi l\u00e0 Collections) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi c\u1ea5u tr\u00fac linh ho\u1ea1t, cho ph\u00e9p l\u01b0u tr\u1eef d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i tu\u00e2n th\u1ee7 m\u1ed9t \u0111\u1ecbnh d\u1ea1ng c\u1ed1 \u0111\u1ecbnh hay c\u1ea5u tr\u00fac c\u1ee9ng nh\u1eafc. \u0110i\u1ec1u n\u00e0y gi\u00fap MongoDB c\u00f3 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u kh\u00f4ng c\u00f3 c\u1ea5u tr\u00fac ho\u1eb7c d\u1eef li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac thay \u0111\u1ed5i theo th\u1eddi gian.<\/p>\n\n\n\n

MongoDB ra \u0111\u1eddi v\u00e0o n\u0103m 2007 b\u1edfi 10gen, m\u1ed9t c\u00f4ng ty kh\u1edfi nghi\u1ec7p do Dwight Merriman, Eliot Horowitz v\u00e0 Kevin Ryan s\u00e1ng l\u1eadp. M\u1ee5c ti\u00eau ban \u0111\u1ea7u c\u1ee7a c\u00f4ng ty l\u00e0 t\u1ea1o ra m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng v\u00e0 h\u1ed7 tr\u1ee3 \u1ee9ng d\u1ee5ng web hi\u1ec7n \u0111\u1ea1i. Sau khi nh\u1eadn th\u1ea5y nhu c\u1ea7u m\u1ea1nh m\u1ebd v\u1ec1 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u linh ho\u1ea1t, MongoDB \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n th\u00e0nh m\u1ed9t s\u1ea3n ph\u1ea9m \u0111\u1ed9c l\u1eadp v\u00e0o n\u0103m 2009. Ng\u00e0y nay, MongoDB l\u00e0 m\u1ed9t trong nh\u1eefng c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL ph\u1ed5 bi\u1ebfn, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c \u1ee9ng d\u1ee5ng web, ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn v\u00e0 d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y.<\/p>\n\n\n\n

C\u00e1c thu\u1eadt ng\u1eef MongoDB th\u01b0\u1eddng d\u00f9ng<\/h2>\n\n\n\n

MongoDB s\u1eed d\u1ee5ng m\u1ed9t s\u1ed1 thu\u1eadt ng\u1eef \u0111\u1eb7c bi\u1ec7t gi\u00fap ng\u01b0\u1eddi d\u00f9ng hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u00e0y. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c thu\u1eadt ng\u1eef ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n

Datbase<\/strong>
Trong MongoDB, m\u1ed9t database l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c collections. M\u1ed7i database c\u00f3 th\u1ec3 ch\u1ee9a nhi\u1ec1u collections v\u00e0 c\u00e1c d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef d\u01b0\u1edbi d\u1ea1ng t\u00e0i li\u1ec7u. M\u1ed9t database c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u collection, nh\u01b0ng m\u1ed7i collection ch\u1ec9 c\u00f3 th\u1ec3 thu\u1ed9c v\u1ec1 m\u1ed9t database duy nh\u1ea5t.<\/p>\n\n\n\n

Collection<\/strong>
Collection trong MongoDB t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t b\u1ea3ng (table) trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 (RDBMS). Tuy nhi\u00ean, kh\u00e1c v\u1edbi c\u00e1c b\u1ea3ng trong RDBMS, c\u00e1c document trong m\u1ed9t collection kh\u00f4ng y\u00eau c\u1ea7u c\u00f3 c\u00f9ng c\u1ea5u tr\u00fac. M\u1ed7i collection c\u00f3 th\u1ec3 ch\u1ee9a c\u00e1c t\u00e0i li\u1ec7u (documents) v\u1edbi c\u00e1c tr\u01b0\u1eddng d\u1eef li\u1ec7u kh\u00e1c nhau.<\/p>\n\n\n\n

Document<\/strong>
Document l\u00e0 \u0111\u01a1n v\u1ecb c\u01a1 b\u1ea3n c\u1ee7a d\u1eef li\u1ec7u trong MongoDB, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t b\u1ea3n ghi trong RDBMS. M\u1ed9t document \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng JSON (ho\u1eb7c BSON – Binary JSON), ch\u1ee9a c\u00e1c c\u1eb7p kh\u00f3a-gi\u00e1 tr\u1ecb, c\u00f3 th\u1ec3 bao g\u1ed3m chu\u1ed7i, s\u1ed1, m\u1ea3ng, ho\u1eb7c c\u00e1c document l\u1ed3ng nhau.<\/p>\n\n\n\n

Index<\/strong>
Index trong MongoDB gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy v\u1ea5n d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t c\u1ea5u tr\u00fac d\u1eef li\u1ec7u ph\u1ee5, gi\u00fap t\u00ecm ki\u1ebfm d\u1eef li\u1ec7u nhanh h\u01a1n. MongoDB h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i index kh\u00e1c nhau, bao g\u1ed3m index \u0111\u01a1n, \u0111a ch\u1ec9 m\u1ee5c, v\u00e0 index theo d\u1ea1ng geospatial \u0111\u1ec3 t\u00ecm ki\u1ebfm d\u1eef li\u1ec7u theo v\u1ecb tr\u00ed.<\/p>\n\n\n\n

Query<\/strong>
Query trong MongoDB l\u00e0 c\u00e1c y\u00eau c\u1ea7u t\u00ecm ki\u1ebfm v\u00e0 thao t\u00e1c v\u1edbi d\u1eef li\u1ec7u. MongoDB s\u1eed d\u1ee5ng c\u00fa ph\u00e1p c\u1ee7a JavaScript \u0111\u1ec3 vi\u1ebft c\u00e1c truy v\u1ea5n, cho ph\u00e9p t\u00ecm ki\u1ebfm, ch\u00e8n, c\u1eadp nh\u1eadt v\u00e0 x\u00f3a d\u1eef li\u1ec7u trong collection. C\u00e1c truy v\u1ea5n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c tr\u01b0\u1eddng ho\u1eb7c c\u00e1c t\u00e0i li\u1ec7u.<\/p>\n\n\n\n

Replica Set<\/strong>
Replica Set l\u00e0 m\u1ed9t nh\u00f3m c\u00e1c b\u1ea3n sao c\u1ee7a c\u00f9ng m\u1ed9t d\u1eef li\u1ec7u, gi\u00fap t\u0103ng c\u01b0\u1eddng t\u00ednh s\u1eb5n s\u00e0ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i c\u1ee7a MongoDB. M\u1ed9t replica set c\u00f3 \u00edt nh\u1ea5t ba th\u00e0nh vi\u00ean: m\u1ed9t primary node v\u00e0 \u00edt nh\u1ea5t m\u1ed9t secondary node. D\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c sao ch\u00e9p t\u1eeb primary node sang secondary node \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb m\u1ea5t khi h\u1ec7 th\u1ed1ng g\u1eb7p s\u1ef1 c\u1ed1.<\/p>\n\n\n\n

Shard<\/strong>
Sharding l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt ph\u00e2n t\u00e1n d\u1eef li\u1ec7u trong MongoDB, gi\u00fap ph\u00e2n chia d\u1eef li\u1ec7u l\u1edbn th\u00e0nh c\u00e1c ph\u1ea7n nh\u1ecf h\u01a1n g\u1ecdi l\u00e0 “shard”. M\u1ed7i shard c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean m\u1ed9t m\u00e1y ch\u1ee7 ri\u00eang bi\u1ec7t, gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng. Sharding gi\u00fap MongoDB c\u00f3 th\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u l\u1edbn m\u00e0 kh\u00f4ng g\u1eb7p ph\u1ea3i c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 t\u00e0i nguy\u00ean ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n\n

C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a MongoDB<\/h2>\n\n\n\n

MongoDB n\u1ed5i b\u1eadt v\u1edbi nhi\u1ec1u \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 t\u00ednh n\u0103ng gi\u00fap n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn trong c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng d\u1eef li\u1ec7u l\u1edbn v\u00e0 ph\u00e2n t\u00e1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a MongoDB:<\/p>\n\n\n\n

C\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1edbi RDBMS<\/h3>\n\n\n\n

MongoDB l\u00e0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL, ngh\u0129a l\u00e0 n\u00f3 kh\u00f4ng s\u1eed d\u1ee5ng c\u1ea5u tr\u00fac b\u1ea3ng nh\u01b0 trong c\u00e1c h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 (RDBMS). Thay v\u00e0o \u0111\u00f3, MongoDB l\u01b0u tr\u1eef d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng t\u00e0i li\u1ec7u (documents) trong c\u00e1c collection. \u0110i\u1ec1u n\u00e0y mang l\u1ea1i s\u1ef1 linh ho\u1ea1t cao, v\u00ec d\u1eef li\u1ec7u c\u00f3 th\u1ec3 c\u00f3 c\u1ea5u tr\u00fac kh\u00e1c nhau m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i tu\u00e2n theo m\u1ed9t s\u01a1 \u0111\u1ed3 c\u1ee9ng nh\u1eafc. \u0110i\u1ec1u n\u00e0y kh\u00e1c bi\u1ec7t v\u1edbi RDBMS, n\u01a1i m\u1ecdi d\u1eef li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u00e1c b\u1ea3ng c\u00f3 c\u1ea5u tr\u00fac c\u1ed1 \u0111\u1ecbnh.<\/p>\n\n\n\n

L\u01b0u tr\u1eef d\u1eef li\u1ec7u d\u1ea1ng t\u00e0i li\u1ec7u JSON<\/h3>\n\n\n\n

MongoDB s\u1eed d\u1ee5ng BSON (Binary JSON) \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u, gi\u00fap h\u1ed7 tr\u1ee3 c\u00e1c ki\u1ec3u d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p nh\u01b0 m\u1ea3ng v\u00e0 t\u00e0i li\u1ec7u l\u1ed3ng nhau. D\u1eef li\u1ec7u trong MongoDB \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c d\u01b0\u1edbi d\u1ea1ng c\u00e1c t\u00e0i li\u1ec7u JSON, v\u1edbi m\u1ed7i t\u00e0i li\u1ec7u l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c c\u1eb7p kh\u00f3a-gi\u00e1 tr\u1ecb. C\u1ea5u tr\u00fac n\u00e0y gi\u00fap MongoDB linh ho\u1ea1t h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7, n\u01a1i d\u1eef li\u1ec7u th\u01b0\u1eddng b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi c\u00e1c b\u1ea3ng v\u00e0 c\u1ed9t c\u1ed1 \u0111\u1ecbnh.<\/p>\n\n\n\n

Ph\u00e2n t\u00e1n d\u1eef li\u1ec7u v\u00e0 t\u00ednh m\u1edf r\u1ed9ng<\/h3>\n\n\n\n

M\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng m\u1ea1nh m\u1ebd c\u1ee7a MongoDB l\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng ngang (horizontal scaling). MongoDB h\u1ed7 tr\u1ee3 t\u00ednh n\u0103ng sharding, cho ph\u00e9p ph\u00e2n t\u00e1n d\u1eef li\u1ec7u tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 ho\u1eb7c c\u1ee5m m\u00e1y ch\u1ee7 (cluster). \u0110i\u1ec1u n\u00e0y gi\u00fap MongoDB c\u00f3 th\u1ec3 x\u1eed l\u00fd l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ef1c l\u1edbn m\u00e0 kh\u00f4ng g\u1eb7p ph\u1ea3i c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t. Sharding gi\u00fap h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng ph\u00e2n chia d\u1eef li\u1ec7u gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng khi c\u00f3 nhu c\u1ea7u.<\/p>\n\n\n\n

T\u00ednh n\u0103ng Replication v\u00e0 Sharding<\/h3>\n\n\n\n

MongoDB h\u1ed7 tr\u1ee3 hai t\u00ednh n\u0103ng quan tr\u1ecdng l\u00e0 replication v\u00e0 sharding.<\/p>\n\n\n\n

Replication<\/strong> gi\u00fap sao l\u01b0u v\u00e0 duy tr\u00ec t\u00ednh s\u1eb5n s\u00e0ng cao c\u1ee7a d\u1eef li\u1ec7u. D\u1eef li\u1ec7u t\u1eeb m\u1ed9t primary node s\u1ebd \u0111\u01b0\u1ee3c sao ch\u00e9p sang c\u00e1c secondary node trong replica set. Khi primary node g\u1eb7p s\u1ef1 c\u1ed1, m\u1ed9t secondary node c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3, \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n\n\n\n

Sharding<\/strong> cho ph\u00e9p ph\u00e2n t\u00e1n d\u1eef li\u1ec7u tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7, gi\u00fap h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u l\u1edbn v\u00e0 t\u0103ng tr\u01b0\u1edfng d\u1ec5 d\u00e0ng m\u00e0 kh\u00f4ng g\u1eb7p ph\u1ea3i t\u00ecnh tr\u1ea1ng ngh\u1ebdn c\u1ed5 chai (bottleneck).<\/p>\n\n\n\n

H\u1ed7 tr\u1ee3 cho nhi\u1ec1u ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh<\/h3>\n\n\n\n

MongoDB h\u1ed7 tr\u1ee3 nhi\u1ec1u ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh ph\u1ed5 bi\u1ebfn nh\u01b0 Java, Python, Node.js, PHP, C#, v\u00e0 nhi\u1ec1u ng\u00f4n ng\u1eef kh\u00e1c. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p MongoDB v\u00e0o c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a h\u1ecd, t\u1eeb web, di \u0111\u1ed9ng \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn. MongoDB cung c\u1ea5p c\u00e1c SDK (Software Development Kits) v\u00e0 driver cho c\u00e1c ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh, gi\u00fap vi\u1ec7c k\u1ebft n\u1ed1i v\u00e0 thao t\u00e1c v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u tr\u1edf n\u00ean \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng MongoDB c\u01a1 b\u1ea3n<\/h2>\n\n\n\n

MongoDB l\u00e0 m\u1ed9t h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1ea1nh m\u1ebd v\u00e0 d\u1ec5 s\u1eed d\u1ee5ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n \u0111\u1ec3 b\u1eaft \u0111\u1ea7u v\u1edbi MongoDB, t\u1eeb vi\u1ec7c t\u1ea1o database v\u00e0 collection, \u0111\u1ebfn vi\u1ec7c thao t\u00e1c d\u1eef li\u1ec7u v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 c\u00e1c thao t\u00e1c c\u01a1 b\u1ea3n m\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u1ea7n n\u1eafm b\u1eaft khi l\u00e0m vi\u1ec7c v\u1edbi MongoDB.<\/p>\n\n\n\n

C\u00e1ch t\u1ea1o Database v\u00e0 Collection trong MongoDB<\/h3>\n\n\n\n

\u0110\u1ec3 b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng MongoDB, b\u1ea1n c\u1ea7n t\u1ea1o m\u1ed9t database v\u00e0 collection. C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o database v\u00e0 collection trong MongoDB r\u1ea5t \u0111\u01a1n gi\u1ea3n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00fa ph\u00e1p c\u01a1 b\u1ea3n:<\/p>\n\n\n\n

T\u1ea1o database:<\/strong> MongoDB t\u1ef1 \u0111\u1ed9ng t\u1ea1o database khi b\u1ea1n th\u00eam d\u1eef li\u1ec7u v\u00e0o \u0111\u00f3. \u0110\u1ec3 t\u1ea1o m\u1ed9t database, b\u1ea1n ch\u1ec9 c\u1ea7n s\u1eed d\u1ee5ng l\u1ec7nh use \u0111\u1ec3 ch\u1ecdn database.<\/p>\n\n\n\n

js<\/p>\n\n\n\n

use myDatabase<\/p>\n\n\n\n

T\u1ea1o collection:<\/strong> MongoDB t\u1ef1 \u0111\u1ed9ng t\u1ea1o collection khi b\u1ea1n ch\u00e8n t\u00e0i li\u1ec7u \u0111\u1ea7u ti\u00ean v\u00e0o \u0111\u00f3. \u0110\u1ec3 t\u1ea1o m\u1ed9t collection, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh db.createCollection():<\/p>\n\n\n\n

js<\/p>\n\n\n\n

db.createCollection(“myCollection”)<\/p>\n\n\n\n

Ch\u00e8n d\u1eef li\u1ec7u:<\/strong> Sau khi t\u1ea1o database v\u00e0 collection, b\u1ea1n c\u00f3 th\u1ec3 ch\u00e8n d\u1eef li\u1ec7u v\u00e0o collection b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng l\u1ec7nh insertOne ho\u1eb7c insertMany:<\/p>\n\n\n\n

js<\/p>\n\n\n\n

db.myCollection.insertOne({ name: “John”, age: 30 })<\/p>\n\n\n\n

C\u00e1ch Ch\u00e8n, C\u1eadp Nh\u1eadt v\u00e0 X\u00f3a D\u1eef Li\u1ec7u trong MongoDB<\/h3>\n\n\n\n

MongoDB cung c\u1ea5p c\u00e1c ph\u01b0\u01a1ng th\u1ee9c \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 thao t\u00e1c v\u1edbi d\u1eef li\u1ec7u trong c\u00e1c collection:<\/p>\n\n\n\n

Ch\u00e8n d\u1eef li\u1ec7u:<\/strong> S\u1eed d\u1ee5ng insertOne() \u0111\u1ec3 ch\u00e8n m\u1ed9t t\u00e0i li\u1ec7u, v\u00e0 insertMany() \u0111\u1ec3 ch\u00e8n nhi\u1ec1u t\u00e0i li\u1ec7u c\u00f9ng l\u00fac.<\/p>\n\n\n\n

js<\/p>\n\n\n\n

db.myCollection.insertOne({ name: “Alice”, age: 25 })<\/p>\n\n\n\n

db.myCollection.insertMany([{ name: “Bob”, age: 28 }, { name: “Charlie”, age: 22 }])<\/p>\n\n\n\n

C\u1eadp nh\u1eadt d\u1eef li\u1ec7u:<\/strong> D\u00f9ng updateOne() \u0111\u1ec3 c\u1eadp nh\u1eadt m\u1ed9t t\u00e0i li\u1ec7u, v\u00e0 updateMany() \u0111\u1ec3 c\u1eadp nh\u1eadt nhi\u1ec1u t\u00e0i li\u1ec7u. V\u00ed d\u1ee5, \u0111\u1ec3 thay \u0111\u1ed5i tu\u1ed5i c\u1ee7a m\u1ed9t ng\u01b0\u1eddi:<\/p>\n\n\n\n

js<\/p>\n\n\n\n

db.myCollection.updateOne({ name: “Alice” }, { $set: { age: 26 } })<\/p>\n\n\n\n

X\u00f3a d\u1eef li\u1ec7u:<\/strong> S\u1eed d\u1ee5ng deleteOne() \u0111\u1ec3 x\u00f3a m\u1ed9t t\u00e0i li\u1ec7u, v\u00e0 deleteMany() \u0111\u1ec3 x\u00f3a nhi\u1ec1u t\u00e0i li\u1ec7u.<\/p>\n\n\n\n

js<\/p>\n\n\n\n

db.myCollection.deleteOne({ name: “Bob” })<\/p>\n\n\n\n

db.myCollection.deleteMany({ age: { $lt: 25 } })<\/p>\n\n\n\n

C\u00e1ch K\u1ebft N\u1ed1i MongoDB v\u1edbi Node.js v\u00e0 Python<\/h3>\n\n\n\n

MongoDB c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p d\u1ec5 d\u00e0ng v\u00e0o c\u00e1c \u1ee9ng d\u1ee5ng Node.js v\u00e0 Python. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch k\u1ebft n\u1ed1i MongoDB v\u1edbi hai ng\u00f4n ng\u1eef n\u00e0y:<\/p>\n\n\n\n

Node.js: C\u00e0i \u0111\u1eb7t MongoDB driver cho Node.js v\u1edbi npm:<\/p>\n\n\n\n

bash<\/p>\n\n\n\n

npm install mongodb<\/p>\n\n\n\n

Sau \u0111\u00f3, b\u1ea1n c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi MongoDB nh\u01b0 sau:<\/p>\n\n\n\n

js<\/p>\n\n\n\n

const { MongoClient } = require(‘mongodb’);<\/p>\n\n\n\n

const url = ‘mongodb:\/\/localhost:27017’;<\/p>\n\n\n\n

const client = new MongoClient(url);<\/p>\n\n\n\n

async function run() {<\/p>\n\n\n\n

await client.connect();<\/p>\n\n\n\n

const db = client.db(‘myDatabase’);<\/p>\n\n\n\n

const collection = db.collection(‘myCollection’);<\/p>\n\n\n\n

console.log(“Connected to MongoDB”);<\/p>\n\n\n\n

}<\/p>\n\n\n\n

run().catch(console.error);<\/p>\n\n\n\n

Python: C\u00e0i \u0111\u1eb7t pymongo \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi MongoDB:<\/p>\n\n\n\n

bash<\/p>\n\n\n\n

pip install pymongo<\/p>\n\n\n\n

K\u1ebft n\u1ed1i MongoDB v\u1edbi Python:<\/p>\n\n\n\n

python<\/p>\n\n\n\n

from pymongo import MongoClient<\/p>\n\n\n\n

client = MongoClient(‘mongodb:\/\/localhost:27017\/’)<\/p>\n\n\n\n

db = client[‘myDatabase’]<\/p>\n\n\n\n

collection = db[‘myCollection’]<\/p>\n\n\n\n

print(“Connected to MongoDB”)<\/p>\n\n\n\n

C\u00e1ch T\u1ea1o Index v\u00e0 Ph\u00e2n T\u00edch Truy V\u1ea5n \u0111\u1ec3 T\u0103ng Hi\u1ec7u Su\u1ea5t<\/h3>\n\n\n\n

MongoDB cung c\u1ea5p c\u00e1c ch\u1ec9 m\u1ee5c (index) gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy v\u1ea5n. B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ch\u1ec9 m\u1ee5c tr\u00ean c\u00e1c tr\u01b0\u1eddng c\u1ee5 th\u1ec3 \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a truy v\u1ea5n:<\/p>\n\n\n\n

T\u1ea1o ch\u1ec9 m\u1ee5c \u0111\u01a1n:<\/strong><\/p>\n\n\n\n

js<\/p>\n\n\n\n

db.myCollection.createIndex({ name: 1 }) \/\/ T\u1ea1o ch\u1ec9 m\u1ee5c theo tr\u01b0\u1eddng “name”<\/p>\n\n\n\n

T\u1ea1o ch\u1ec9 m\u1ee5c \u0111a tr\u01b0\u1eddng:<\/strong><\/p>\n\n\n\n

js<\/p>\n\n\n\n

db.myCollection.createIndex({ name: 1, age: -1 }) \/\/ T\u1ea1o ch\u1ec9 m\u1ee5c theo c\u1ea3 “name” v\u00e0 “age”<\/p>\n\n\n\n

Ph\u00e2n t\u00edch truy v\u1ea5n:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh explain() \u0111\u1ec3 xem c\u00e1ch MongoDB th\u1ef1c thi m\u1ed9t truy v\u1ea5n v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t:<\/p>\n\n\n\n

js<\/p>\n\n\n\n

db.myCollection.find({ name: “John” }).explain()<\/p>\n\n\n\n

C\u00e1ch Sao L\u01b0u, Kh\u00f4i Ph\u1ee5c, Import v\u00e0 Export D\u1eef Li\u1ec7u<\/h3>\n\n\n\n

MongoDB cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 sao l\u01b0u v\u00e0 kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u:<\/p>\n\n\n\n

Sao l\u01b0u d\u1eef li\u1ec7u:<\/strong> D\u00f9ng mongodump \u0111\u1ec3 sao l\u01b0u d\u1eef li\u1ec7u.<\/p>\n\n\n\n

bash<\/p>\n\n\n\n

mongodump –out \/path\/to\/backup<\/p>\n\n\n\n

Kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u:<\/strong> D\u00f9ng mongorestore \u0111\u1ec3 kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u t\u1eeb b\u1ea3n sao l\u01b0u.<\/p>\n\n\n\n

bash<\/p>\n\n\n\n

mongorestore \/path\/to\/backup<\/p>\n\n\n\n

Import d\u1eef li\u1ec7u:<\/strong> D\u00f9ng mongoimport \u0111\u1ec3 nh\u1eadp d\u1eef li\u1ec7u t\u1eeb c\u00e1c t\u1ec7p JSON ho\u1eb7c CSV.<\/p>\n\n\n\n

bash<\/p>\n\n\n\n

mongoimport –db myDatabase –collection myCollection –file data.json<\/p>\n\n\n\n

Export d\u1eef li\u1ec7u:<\/strong> D\u00f9ng mongoexport \u0111\u1ec3 xu\u1ea5t d\u1eef li\u1ec7u t\u1eeb MongoDB.<\/p>\n\n\n\n

bash<\/p>\n\n\n\n

mongoexport –db myDatabase –collection myCollection –out data.json<\/p>\n\n\n\n

C\u00e1ch T\u1ed1i \u01afu Hi\u1ec7u Su\u1ea5t Khi L\u00e0m Vi\u1ec7c V\u1edbi MongoDB<\/h3>\n\n\n\n

\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o MongoDB ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn, c\u00f3 m\u1ed9t s\u1ed1 k\u1ef9 thu\u1eadt t\u1ed1i \u01b0u h\u00f3a m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng:<\/p>\n\n\n\n

S\u1eed d\u1ee5ng ch\u1ec9 m\u1ee5c hi\u1ec7u qu\u1ea3: \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c tr\u01b0\u1eddng th\u01b0\u1eddng xuy\u00ean \u0111\u01b0\u1ee3c truy v\u1ea5n c\u00f3 ch\u1ec9 m\u1ee5c. \u0110i\u1ec1u n\u00e0y s\u1ebd gi\u00fap t\u0103ng t\u1ed1c truy v\u1ea5n.<\/p>\n\n\n\n

T\u1ed1i \u01b0u h\u00f3a c\u00e1c truy v\u1ea5n: Tr\u00e1nh c\u00e1c truy v\u1ea5n kh\u00f4ng c\u1ea7n thi\u1ebft ho\u1eb7c c\u00e1c truy v\u1ea5n qu\u00e1 ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t. S\u1eed d\u1ee5ng explain() \u0111\u1ec3 ki\u1ec3m tra c\u00e1c truy v\u1ea5n.<\/p>\n\n\n\n

S\u1eed d\u1ee5ng Sharding: Khi d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n l\u1edbn v\u00e0 kh\u00f4ng th\u1ec3 l\u01b0u tr\u1eef tr\u00ean m\u1ed9t m\u00e1y ch\u1ee7 duy nh\u1ea5t, s\u1eed d\u1ee5ng sharding \u0111\u1ec3 ph\u00e2n t\u00e1n d\u1eef li\u1ec7u v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

Gi\u1edbi h\u1ea1n v\u00e0 ph\u00e2n trang k\u1ebft qu\u1ea3: Khi truy v\u1ea5n tr\u1ea3 v\u1ec1 m\u1ed9t l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn, h\u00e3y s\u1eed d\u1ee5ng limit() v\u00e0 skip() \u0111\u1ec3 ph\u00e2n trang v\u00e0 gi\u1ea3m t\u1ea3i cho h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

So s\u00e1nh MongoDB v\u00e0 MySQL<\/h2>\n\n\n\n

MongoDB v\u00e0 MySQL \u0111\u1ec1u l\u00e0 c\u00e1c h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u ph\u1ed5 bi\u1ebfn, nh\u01b0ng ch\u00fang c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t v\u1ec1 c\u1ea5u tr\u00fac, c\u00e1ch l\u01b0u tr\u1eef v\u00e0 ph\u01b0\u01a1ng th\u1ee9c ho\u1ea1t \u0111\u1ed9ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 \u0111i\u1ec3m so s\u00e1nh gi\u1eefa MongoDB v\u00e0 MySQL:<\/p>\n\n\n\n

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng so s\u00e1nh gi\u1eefa MongoDB v\u00e0 MySQL:<\/p>\n\n\n\n

Aspect<\/strong><\/td>MongoDB<\/strong><\/td>MySQL<\/strong><\/td><\/tr><\/thead>
Ki\u1ec3u c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong><\/td>NoSQL, l\u01b0u tr\u1eef d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng t\u00e0i li\u1ec7u (documents) trong c\u00e1c collection<\/td>RDBMS, d\u1eef li\u1ec7u l\u01b0u tr\u1eef trong c\u00e1c b\u1ea3ng v\u1edbi m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng<\/td><\/tr>
C\u1ea5u tr\u00fac d\u1eef li\u1ec7u<\/strong><\/td>S\u1eed d\u1ee5ng BSON (Binary JSON) \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u linh ho\u1ea1t, c\u00f3 th\u1ec3 ch\u1ee9a m\u1ea3ng v\u00e0 t\u00e0i li\u1ec7u con<\/td>D\u1eef li\u1ec7u l\u01b0u tr\u1eef trong c\u00e1c b\u1ea3ng v\u1edbi c\u00e1c c\u1ed9t \u0111\u00e3 x\u00e1c \u0111\u1ecbnh, ph\u1ea3i tu\u00e2n th\u1ee7 schema c\u1ee9ng nh\u1eafc<\/td><\/tr>
Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong><\/td>M\u1edf r\u1ed9ng theo chi\u1ec1u ngang (horizontal scaling) th\u00f4ng qua sharding, ph\u00e2n t\u00e1n d\u1eef li\u1ec7u tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7<\/td>M\u1edf r\u1ed9ng ch\u1ee7 y\u1ebfu theo chi\u1ec1u d\u1ecdc (vertical scaling), c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng theo chi\u1ec1u ngang th\u00f4ng qua replication v\u00e0 clustering<\/td><\/tr>
Giao d\u1ecbch v\u00e0 t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u<\/strong><\/td>H\u1ed7 tr\u1ee3 giao d\u1ecbch \u0111\u01a1n gi\u1ea3n, nh\u01b0ng kh\u00f4ng m\u1ea1nh m\u1ebd nh\u01b0 MySQL. Giao d\u1ecbch nhi\u1ec1u t\u00e0i li\u1ec7u trong c\u00e1c phi\u00ean b\u1ea3n m\u1edbi<\/td>H\u1ed7 tr\u1ee3 giao d\u1ecbch ACID (Atomicity, Consistency, Isolation, Durability), \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u<\/td><\/tr>
Hi\u1ec7u su\u1ea5t<\/strong><\/td>T\u1ed1c \u0111\u1ed9 truy v\u1ea5n cao v\u1edbi d\u1eef li\u1ec7u phi c\u1ea5u tr\u00fac, t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c truy v\u1ea5n \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1eef li\u1ec7u l\u1edbn<\/td>Hi\u1ec7u su\u1ea5t cao v\u1edbi d\u1eef li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac, t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c truy v\u1ea5n ph\u1ee9c t\u1ea1p v\u00e0 m\u1ed1i quan h\u1ec7 d\u1eef li\u1ec7u<\/td><\/tr>
C\u1ed9ng \u0111\u1ed3ng v\u00e0 h\u1ed7 tr\u1ee3<\/strong><\/td>C\u1ed9ng \u0111\u1ed3ng l\u1edbn, h\u1ed7 tr\u1ee3 t\u1eeb MongoDB, Inc., v\u00e0 d\u1ecbch v\u1ee5 MongoDB Atlas tr\u00ean \u0111\u00e1m m\u00e2y<\/td>C\u1ed9ng \u0111\u1ed3ng m\u1ea1nh m\u1ebd, h\u1ed7 tr\u1ee3 t\u1eeb Oracle, c\u00f3 nhi\u1ec1u t\u00e0i li\u1ec7u v\u00e0 c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a MongoDB<\/h2>\n\n\n\n

MongoDB c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m, nh\u01b0ng c\u0169ng t\u1ed3n t\u1ea1i m\u1ed9t s\u1ed1 nh\u01b0\u1ee3c \u0111i\u1ec3m. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m n\u00e0y gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 quy\u1ebft \u0111\u1ecbnh li\u1ec7u MongoDB c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh hay kh\u00f4ng.<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m c\u1ee7a MongoDB<\/h3>\n\n\n\n

Linh ho\u1ea1t trong l\u01b0u tr\u1eef d\u1eef li\u1ec7u<\/strong>
MongoDB s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh d\u1eef li\u1ec7u t\u00e0i li\u1ec7u JSON (BSON), gi\u00fap l\u01b0u tr\u1eef d\u1eef li\u1ec7u kh\u00f4ng c\u00f3 c\u1ea5u tr\u00fac ho\u1eb7c d\u1eef li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac linh ho\u1ea1t. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n d\u1ec5 d\u00e0ng thay \u0111\u1ed5i v\u00e0 m\u1edf r\u1ed9ng c\u1ea5u tr\u00fac d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng g\u1eb7p ph\u1ea3i r\u00e0ng bu\u1ed9c nh\u01b0 trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7.<\/p>\n\n\n\n

Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng cao<\/strong>
MongoDB h\u1ed7 tr\u1ee3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng ngang (horizontal scaling) th\u00f4ng qua sharding. Khi kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u t\u0103ng l\u00ean, MongoDB c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7, gi\u00fap x\u1eed l\u00fd l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

T\u00ednh s\u1eb5n s\u00e0ng cao v\u00e0 \u0111\u1ed9 b\u1ec1n d\u1eef li\u1ec7u<\/strong>
Th\u00f4ng qua t\u00ednh n\u0103ng replication, MongoDB duy tr\u00ec nhi\u1ec1u b\u1ea3n sao c\u1ee7a d\u1eef li\u1ec7u tr\u00ean c\u00e1c node kh\u00e1c nhau, gi\u00fap \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng cao v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sau s\u1ef1 c\u1ed1. Khi m\u1ed9t node g\u1eb7p s\u1ef1 c\u1ed1, d\u1eef li\u1ec7u v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy xu\u1ea5t t\u1eeb c\u00e1c node sao l\u01b0u.<\/p>\n\n\n\n

T\u1ed1c \u0111\u1ed9 truy v\u1ea5n cao<\/strong>
MongoDB s\u1eed d\u1ee5ng ch\u1ec9 m\u1ee5c (indexing) \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 truy v\u1ea5n. C\u00e1c truy v\u1ea5n ph\u1ee9c t\u1ea1p, bao g\u1ed3m t\u00ecm ki\u1ebfm theo tr\u01b0\u1eddng v\u00e0 c\u00e1c ph\u00e9p to\u00e1n n\u00e2ng cao, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nhanh ch\u00f3ng nh\u1edd v\u00e0o h\u1ec7 th\u1ed1ng ch\u1ec9 m\u1ee5c m\u1ea1nh m\u1ebd c\u1ee7a MongoDB.<\/p>\n\n\n\n

H\u1ed7 tr\u1ee3 c\u00e1c ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh \u0111a d\u1ea1ng<\/strong>
MongoDB h\u1ed7 tr\u1ee3 r\u1ea5t nhi\u1ec1u ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh ph\u1ed5 bi\u1ebfn nh\u01b0 Java, Python, Node.js, PHP, C#, v.v. \u0110i\u1ec1u n\u00e0y gi\u00fap MongoDB d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p v\u00e0o c\u00e1c \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng tr\u00ean nhi\u1ec1u n\u1ec1n t\u1ea3ng kh\u00e1c nhau.<\/p>\n\n\n\n

Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a MongoDB<\/h3>\n\n\n\n

Kh\u00f4ng h\u1ed7 tr\u1ee3 giao d\u1ecbch ph\u1ee9c t\u1ea1p<\/strong>
M\u1ed9t trong nh\u1eefng h\u1ea1n ch\u1ebf l\u1edbn c\u1ee7a MongoDB l\u00e0 n\u00f3 kh\u00f4ng h\u1ed7 tr\u1ee3 c\u00e1c giao d\u1ecbch ph\u1ee9c t\u1ea1p nh\u01b0 trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7. D\u00f9 MongoDB c\u00f3 h\u1ed7 tr\u1ee3 giao d\u1ecbch \u0111\u01a1n gi\u1ea3n, nh\u01b0ng vi\u1ec7c x\u1eed l\u00fd c\u00e1c giao d\u1ecbch ph\u1ee9c t\u1ea1p y\u00eau c\u1ea7u nhi\u1ec1u b\u01b0\u1edbc ho\u1eb7c nhi\u1ec1u b\u1ea3ng d\u1eef li\u1ec7u v\u1eabn c\u00f2n h\u1ea1n ch\u1ebf.<\/p>\n\n\n\n

Kh\u00f4ng c\u00f3 m\u1ed1i quan h\u1ec7 gi\u1eefa d\u1eef li\u1ec7u<\/strong>
MongoDB kh\u00f4ng h\u1ed7 tr\u1ee3 m\u1ed1i quan h\u1ec7 tr\u1ef1c ti\u1ebfp gi\u1eefa c\u00e1c t\u00e0i li\u1ec7u nh\u01b0 trong c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 (RDBMS). M\u1eb7c d\u00f9 c\u00f3 th\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u li\u00ean quan th\u00f4ng qua c\u00e1c t\u00e0i li\u1ec7u l\u1ed3ng nhau, nh\u01b0ng vi\u1ec7c thi\u1ebft l\u1eadp c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 kh\u00f3 kh\u0103n v\u00e0 t\u1ed1n k\u00e9m t\u00e0i nguy\u00ean h\u01a1n.<\/p>\n\n\n\n

Qu\u1ea3n l\u00fd v\u00e0 b\u1ea3o tr\u00ec ph\u1ee9c t\u1ea1p<\/strong>
Vi\u1ec7c qu\u1ea3n l\u00fd v\u00e0 b\u1ea3o tr\u00ec m\u1ed9t h\u1ec7 th\u1ed1ng MongoDB l\u1edbn, \u0111\u1eb7c bi\u1ec7t khi c\u00f3 nhi\u1ec1u replica sets v\u00e0 shards, c\u00f3 th\u1ec3 tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p. C\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 \u0111\u1ed3ng b\u1ed9 d\u1eef li\u1ec7u gi\u1eefa c\u00e1c node, ph\u00e2n m\u1ea3nh d\u1eef li\u1ec7u v\u00e0 t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u c\u00e1c k\u1ef9 thu\u1eadt qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u00e2ng cao.<\/p>\n\n\n\n

Ti\u00eau t\u1ed1n b\u1ed9 nh\u1edb<\/strong>
V\u00ec MongoDB l\u01b0u tr\u1eef d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng t\u00e0i li\u1ec7u BSON, c\u00e1c t\u00e0i li\u1ec7u n\u00e0y c\u00f3 th\u1ec3 kh\u00e1 l\u1edbn v\u00e0 chi\u1ebfm nhi\u1ec1u b\u1ed9 nh\u1edb h\u01a1n so v\u1edbi c\u00e1c b\u1ea3n ghi trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u0103n trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a b\u1ed9 nh\u1edb khi x\u1eed l\u00fd m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng c\u1ee7a MongoDB trong th\u1ef1c t\u1ebf<\/h2>\n\n\n\n

MongoDB \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c v\u00e0 \u1ee9ng d\u1ee5ng kh\u00e1c nhau, nh\u1edd v\u00e0o kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, linh ho\u1ea1t trong l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t cao. C\u01a1 s\u1edf d\u1eef li\u1ec7u n\u00e0y \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 y\u00eau c\u1ea7u x\u1eed l\u00fd d\u1eef li\u1ec7u l\u1edbn, d\u1eef li\u1ec7u phi c\u1ea5u tr\u00fac, v\u00e0 c\u1ea7n c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng quy m\u00f4 d\u1ec5 d\u00e0ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a MongoDB:<\/p>\n\n\n\n

C\u00e1c c\u00f4ng ty v\u00e0 l\u0129nh v\u1ef1c s\u1eed d\u1ee5ng MongoDB hi\u1ec7u qu\u1ea3<\/strong><\/p>\n\n\n\n

MongoDB \u0111\u00e3 tr\u1edf th\u00e0nh s\u1ef1 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn c\u1ee7a nhi\u1ec1u c\u00f4ng ty l\u1edbn v\u00e0 c\u00e1c d\u1ef1 \u00e1n c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 v\u1ec1 c\u00e1c c\u00f4ng ty v\u00e0 l\u0129nh v\u1ef1c s\u1eed d\u1ee5ng MongoDB:<\/p>\n\n\n\n

E-commerce v\u00e0 Retail<\/strong>: C\u00e1c c\u00f4ng ty trong ng\u00e0nh th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed nh\u01b0 eBay, Adobe, v\u00e0 Shopify s\u1eed d\u1ee5ng MongoDB \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 qu\u1ea3n l\u00fd l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00f4ng tin kh\u00e1ch h\u00e0ng, l\u1ecbch s\u1eed giao d\u1ecbch, v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m. MongoDB gi\u00fap c\u00e1c c\u00f4ng ty n\u00e0y d\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng khi c\u00f3 s\u1ef1 gia t\u0103ng l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u.<\/p>\n\n\n\n

D\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y v\u00e0 \u1ee9ng d\u1ee5ng web<\/strong>: MongoDB l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn c\u1ee7a c\u00e1c n\u1ec1n t\u1ea3ng d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y nh\u01b0 Cloud Foundry v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng web nh\u01b0 Craigslist. Nh\u1eefng \u1ee9ng d\u1ee5ng n\u00e0y y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng x\u1eed l\u00fd l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng cao, v\u00e0 MongoDB \u0111\u00e1p \u1ee9ng r\u1ea5t t\u1ed1t nh\u1eefng y\u00eau c\u1ea7u n\u00e0y.<\/p>\n\n\n\n

Ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn<\/strong>: MongoDB \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn nh\u1edd v\u00e0o kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u phi c\u1ea5u tr\u00fac. C\u00e1c c\u00f4ng ty nh\u01b0 Google, eBay, v\u00e0 Facebook s\u1eed d\u1ee5ng MongoDB \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 ph\u00e2n t\u00edch l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn t\u1eeb c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u kh\u00f4ng c\u1ea5u tr\u00fac, ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u1eadt k\u00fd ho\u1ea1t \u0111\u1ed9ng ng\u01b0\u1eddi d\u00f9ng v\u00e0 d\u1eef li\u1ec7u c\u1ea3m bi\u1ebfn.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng di \u0111\u1ed9ng v\u00e0 IoT<\/strong>: C\u00e1c \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong l\u0129nh v\u1ef1c Internet of Things (IoT), c\u0169ng s\u1eed d\u1ee5ng MongoDB \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u t\u1eeb h\u00e0ng tri\u1ec7u thi\u1ebft b\u1ecb v\u00e0 c\u1ea3m bi\u1ebfn. MongoDB gi\u00fap qu\u1ea3n l\u00fd d\u1eef li\u1ec7u t\u1eeb c\u00e1c thi\u1ebft b\u1ecb IoT, cho ph\u00e9p m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng khi s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb t\u0103ng l\u00ean m\u00e0 kh\u00f4ng g\u1eb7p ph\u1ea3i v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

C\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p t\u00e0i ch\u00ednh v\u00e0 y t\u1ebf<\/strong>: MongoDB c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ng\u00e0nh y\u00eau c\u1ea7u l\u01b0u tr\u1eef v\u00e0 truy xu\u1ea5t d\u1eef li\u1ec7u nhanh ch\u00f3ng, ch\u1eb3ng h\u1ea1n nh\u01b0 trong t\u00e0i ch\u00ednh v\u00e0 y t\u1ebf. MongoDB gi\u00fap c\u00e1c t\u1ed5 ch\u1ee9c trong c\u00e1c l\u0129nh v\u1ef1c n\u00e0y l\u01b0u tr\u1eef d\u1eef li\u1ec7u b\u1ec7nh nh\u00e2n, h\u1ed3 s\u01a1 t\u00e0i ch\u00ednh v\u00e0 c\u00e1c d\u1eef li\u1ec7u kh\u00f4ng c\u00f3 c\u1ea5u tr\u00fac kh\u00e1c.<\/p>\n\n\n\n

T\u00f3m l\u1ea1i, MongoDB l\u00e0 g\u00ec<\/strong> l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi quan tr\u1ecdng khi t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p cho c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 linh ho\u1ea1t. B\u00e0i vi\u1ebft \u0111\u00e3 tr\u00ecnh b\u00e0y t\u1ed5ng quan v\u1ec1 MongoDB v\u00e0 nh\u1eefng \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a n\u00f3, kh\u1eb3ng \u0111\u1ecbnh vai tr\u00f2 c\u1ee7a c\u00f4ng c\u1ee5 n\u00e0y trong vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 ph\u1ee9c t\u1ea1p.<\/p>\n\n\n\n

Tr\u00ed Nh\u00e2n<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Nhu c\u1ea7u v\u1ec1 c\u00e1c h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u linh ho\u1ea1t v\u00e0 d\u1ec5 m\u1edf r\u1ed9ng ng\u00e0y c\u00e0ng tr\u1edf n\u00ean quan tr\u1ecdng. MongoDB l\u00e0 …<\/p>\n","protected":false},"author":58,"featured_media":9144,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[64],"class_list":["post-9140","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tu-van-nghe-nghiep","tag-it"],"_links":{"self":[{"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/posts\/9140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/users\/58"}],"replies":[{"embeddable":true,"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/comments?post=9140"}],"version-history":[{"count":4,"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/posts\/9140\/revisions"}],"predecessor-version":[{"id":15659,"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/posts\/9140\/revisions\/15659"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/media\/9144"}],"wp:attachment":[{"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/media?parent=9140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/categories?post=9140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mb668s.com\/cam-nang-7mb66-xoc-dia\/wp-json\/wp\/v2\/tags?post=9140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}