{"id":477132,"date":"2023-08-09T09:08:09","date_gmt":"2023-08-09T09:08:09","guid":{"rendered":""},"modified":"2023-09-05T11:14:05","modified_gmt":"2023-09-05T11:14:05","slug":"event-driven-programming","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/event-driven-programming\/","title":{"rendered":"L\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n"},"content":{"rendered":"<p>L\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n l\u00e0 m\u1ed9t m\u00f4 h\u00ecnh l\u1eadp tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng theo nguy\u00ean t\u1eafc x\u1eed l\u00fd s\u1ef1 ki\u1ec7n. Ph\u01b0\u01a1ng ph\u00e1p l\u1eadp tr\u00ecnh n\u00e0y t\u1eadp trung v\u00e0o c\u00e1c s\u1ef1 ki\u1ec7n, c\u00f3 th\u1ec3 l\u00e0 h\u00e0nh \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng nh\u01b0 nh\u1ea5p chu\u1ed9t, nh\u1ea5n ph\u00edm ho\u1eb7c c\u00e1c s\u1ef1 ki\u1ec7n do h\u1ec7 th\u1ed1ng t\u1ea1o ra nh\u01b0 t\u1ea3i t\u1ec7p ho\u1eb7c k\u00edch ho\u1ea1t c\u1ea3nh b\u00e1o.<\/p>\n<h2>S\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/h2>\n<p>L\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb c\u00e1c giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng \u0111\u1ed3 h\u1ecda (GUI) ban \u0111\u1ea7u. M\u00f4 h\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp l\u1ea7n \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n Smalltalk t\u1ea1i Xerox PARC, m\u1ed9t ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng ban \u0111\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong thi\u1ebft k\u1ebf GUI v\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1970 v\u00e0 \u0111\u1ea7u nh\u1eefng n\u0103m 1980.<\/p>\n<p>Trong th\u1eddi \u0111\u1ea1i n\u00e0y, c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n nh\u1eadn th\u1ea5y r\u1eb1ng c\u00e1c m\u00f4 h\u00ecnh l\u1eadp tr\u00ecnh th\u1ee7 t\u1ee5c truy\u1ec1n th\u1ed1ng kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng trong GUI. Do \u0111\u00f3, h\u1ecd \u0111\u00e3 gi\u1edbi thi\u1ec7u m\u00f4 h\u00ecnh l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n, trong \u0111\u00f3 c\u00e1c h\u00e0nh \u0111\u1ed9ng (s\u1ef1 ki\u1ec7n) c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t l\u1ec7nh g\u1ecdi h\u00e0m (tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n), cho ph\u00e9p c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh t\u01b0\u01a1ng t\u00e1c v\u00e0 ph\u1ea3n h\u1ed3i nhanh h\u01a1n.<\/p>\n<h2>C\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/h2>\n<p>Trong l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n, lu\u1ed3ng ch\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n nh\u01b0 h\u00e0nh \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ea7u ra c\u1ea3m bi\u1ebfn ho\u1eb7c th\u00f4ng b\u00e1o t\u1eeb c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh ho\u1eb7c lu\u1ed3ng kh\u00e1c. M\u1ed7i s\u1ef1 ki\u1ec7n n\u00e0y \u0111\u1ec1u c\u00f3 m\u1ed9t tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n, l\u00e0 m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh con g\u1ecdi l\u1ea1i \u0111\u1ec3 x\u1eed l\u00fd s\u1ef1 ki\u1ec7n \u0111\u1ea7u v\u00e0o.<\/p>\n<p>Th\u00f4ng th\u01b0\u1eddng, l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n bao g\u1ed3m c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>M\u1ed9t v\u00f2ng l\u1eb7p s\u1ef1 ki\u1ec7n l\u1eafng nghe c\u00e1c s\u1ef1 ki\u1ec7n.<\/li>\n<li>Tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n t\u01b0\u01a1ng \u1ee9ng.<\/li>\n<li>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng s\u1ef1 ki\u1ec7n \u0111\u00f3ng g\u00f3i m\u1ed9t s\u1ef1 ki\u1ec7n b\u1eb1ng c\u00e1c tham s\u1ed1.<\/li>\n<\/ol>\n<p>L\u1eadp tr\u00ecnh vi\u00ean ch\u1ec9 \u0111\u1ecbnh c\u00e1c tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n n\u00e0y, ch\u00fang s\u1ebd \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t khi s\u1ef1 ki\u1ec7n t\u01b0\u01a1ng \u1ee9ng x\u1ea3y ra. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y v\u1ec1 c\u01a1 b\u1ea3n kh\u00e1c v\u1edbi l\u1eadp tr\u00ecnh th\u1ee7 t\u1ee5c truy\u1ec1n th\u1ed1ng trong \u0111\u00f3 lu\u1ed3ng ch\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi m\u00e3 c\u1ee7a ng\u01b0\u1eddi l\u1eadp tr\u00ecnh.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/h2>\n<p>M\u00f4 h\u00ecnh l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n xoay quanh m\u1ed9t v\u00f2ng l\u1eb7p s\u1ef1 ki\u1ec7n. V\u00f2ng l\u1eb7p n\u00e0y ch\u1edd c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 g\u1eedi ch\u00fang \u0111\u1ebfn b\u1ed9 x\u1eed l\u00fd t\u01b0\u01a1ng \u1ee9ng khi ch\u00fang x\u1ea3y ra.<\/p>\n<ol>\n<li><strong>H\u00e0ng \u0111\u1ee3i s\u1ef1 ki\u1ec7n<\/strong>: T\u1ea5t c\u1ea3 c\u00e1c s\u1ef1 ki\u1ec7n s\u1ebd chuy\u1ec3n \u0111\u1ebfn h\u00e0ng \u0111\u1ee3i s\u1ef1 ki\u1ec7n n\u01a1i ch\u00fang ch\u1edd \u0111\u01b0\u1ee3c x\u1eed l\u00fd.<\/li>\n<li><strong>V\u00f2ng l\u1eb7p s\u1ef1 ki\u1ec7n<\/strong>: \u0110\u00e2y l\u00e0 c\u1ea5u tr\u00fac \u0111i\u1ec1u khi\u1ec3n ch\u1edd v\u00e0 g\u1eedi c\u00e1c s\u1ef1 ki\u1ec7n ho\u1eb7c tin nh\u1eafn trong m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh. N\u00f3 l\u1ea5y c\u00e1c s\u1ef1 ki\u1ec7n t\u1eeb h\u00e0ng \u0111\u1ee3i s\u1ef1 ki\u1ec7n v\u00e0 g\u1eedi ch\u00fang \u0111\u1ebfn b\u1ed9 x\u1eed l\u00fd s\u1ef1 ki\u1ec7n.<\/li>\n<li><strong>X\u1eed l\u00fd s\u1ef1 ki\u1ec7n<\/strong>: \u0110\u00e2y l\u00e0 c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh con x\u1eed l\u00fd c\u00e1c s\u1ef1 ki\u1ec7n nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb v\u00f2ng l\u1eb7p s\u1ef1 ki\u1ec7n.<\/li>\n<\/ol>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/h2>\n<ul>\n<li>\n<p><strong>Kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/strong>: Trong l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n, c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd theo c\u00e1ch kh\u00f4ng \u0111\u1ed3ng b\u1ed9. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1ea5t k\u1ef3 l\u00fac n\u00e0o, kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i theo th\u1ee9 t\u1ef1 ch\u00fang \u0111\u01b0\u1ee3c x\u1ebfp h\u00e0ng \u0111\u1ee3i.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1edbp n\u1ed1i l\u1ecfng l\u1ebbo<\/strong>: C\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 tr\u00ecnh x\u1eed l\u00fd \u0111\u01b0\u1ee3c li\u00ean k\u1ebft l\u1ecfng l\u1ebbo. Ngu\u1ed3n s\u1ef1 ki\u1ec7n kh\u00f4ng c\u1ea7n bi\u1ebft g\u00ec v\u1ec1 tr\u00ecnh x\u1eed l\u00fd, \u0111i\u1ec1u n\u00e0y l\u00e0m t\u0103ng t\u00ednh m\u00f4-\u0111un c\u1ee7a \u1ee9ng d\u1ee5ng.<\/p>\n<\/li>\n<li>\n<p><strong>Ho\u1ea1t \u0111\u1ed9ng I\/O kh\u00f4ng ch\u1eb7n<\/strong>: L\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 ho\u1ea1t \u0111\u1ed9ng I\/O cao, gi\u00fap \u1ee9ng d\u1ee5ng c\u00f3 \u0111\u1ed9 ph\u1ea3n h\u1ed3i cao.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/h2>\n<p>L\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n c\u00f3 nhi\u1ec1u d\u1ea1ng. Bao g\u1ed3m c\u00e1c:<\/p>\n<ol>\n<li><strong>L\u1eadp tr\u00ecnh giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng \u0111\u1ed3 h\u1ecda (GUI)<\/strong>: Trong l\u1eadp tr\u00ecnh GUI, c\u00e1c h\u00e0nh \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng nh\u01b0 nh\u1ea5p chu\u1ed9t ho\u1eb7c nh\u1ea5n ph\u00edm s\u1ebd k\u00edch ho\u1ea1t c\u00e1c s\u1ef1 ki\u1ec7n.<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng m\u00e1y ch\u1ee7<\/strong>: Trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e1y ch\u1ee7, c\u00e1c y\u00eau c\u1ea7u t\u1eeb m\u00e1y kh\u00e1ch \u0111\u01b0\u1ee3c coi l\u00e0 s\u1ef1 ki\u1ec7n.<\/li>\n<li><strong>L\u1eadp tr\u00ecnh theo th\u1eddi gian<\/strong>: \u0110i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi b\u1ed9 \u0111\u1ebfm th\u1eddi gian.<\/li>\n<\/ol>\n<p>\u0110\u00e2y l\u00e0 b\u1ea3ng so s\u00e1nh c\u00e1c lo\u1ea1i n\u00e0y:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<th>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>L\u1eadp tr\u00ecnh GUI<\/td>\n<td>S\u1ef1 ki\u1ec7n nh\u1ea5n n\u00fat trong \u1ee9ng d\u1ee5ng d\u00e0nh cho m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n<\/td>\n<td>\u1ee8ng d\u1ee5ng m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n, Tr\u00f2 ch\u01a1i \u0111i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td>\u1ee8ng d\u1ee5ng m\u00e1y ch\u1ee7<\/td>\n<td>S\u1ef1 ki\u1ec7n y\u00eau c\u1ea7u HTTP trong m\u00e1y ch\u1ee7 web<\/td>\n<td>M\u00e1y ch\u1ee7 web, M\u00e1y ch\u1ee7 proxy<\/td>\n<\/tr>\n<tr>\n<td>Theo th\u1eddi gian<\/td>\n<td>C\u00e1c t\u00e1c v\u1ee5 \u0111\u01b0\u1ee3c l\u1eadp l\u1ecbch trong ph\u1ea7n m\u1ec1m<\/td>\n<td>L\u1eadp l\u1ecbch, t\u1ef1 \u0111\u1ed9ng h\u00f3a t\u00e1c v\u1ee5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u00c1p d\u1ee5ng l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n: Th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>L\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee9c t\u1ea1p. Vi\u1ec7c qu\u1ea3n l\u00fd lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 kh\u00f3 kh\u0103n do t\u00ednh ch\u1ea5t kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u1ee7a vi\u1ec7c x\u1eed l\u00fd s\u1ef1 ki\u1ec7n. Vi\u1ec7c g\u1ee1 l\u1ed7i c\u0169ng c\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p h\u01a1n do lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n phi tuy\u1ebfn t\u00ednh.<\/p>\n<p>Tuy nhi\u00ean, c\u00e1c ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh v\u00e0 th\u01b0 vi\u1ec7n hi\u1ec7n \u0111\u1ea1i \u0111\u01b0a ra gi\u1ea3i ph\u00e1p cho nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y. Promise v\u00e0 async\/await trong JavaScript ho\u1eb7c Futures v\u00e0 async\/await trong Dart l\u00e0 nh\u1eefng v\u00ed d\u1ee5 v\u1ec1 t\u00ednh tr\u1eebu t\u01b0\u1ee3ng gi\u00fap qu\u1ea3n l\u00fd lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/p>\n<h2>So s\u00e1nh l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/h2>\n<p>So s\u00e1nh l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n v\u1edbi l\u1eadp tr\u00ecnh th\u1ee7 t\u1ee5c v\u00e0 l\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1eb7c tr\u01b0ng<\/th>\n<th>Theo h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/th>\n<th>th\u1ee7 t\u1ee5c<\/th>\n<th>H\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng<\/td>\n<td>D\u1ef1a tr\u00ean s\u1ef1 ki\u1ec7n<\/td>\n<td>tuy\u1ebfn t\u00ednh<\/td>\n<td>Cu\u1ed9c g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/td>\n<td>\u0110\u00fang<\/td>\n<td>KH\u00d4NG<\/td>\n<td>Hi\u1ebfm khi<\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh m\u00f4 \u0111un<\/td>\n<td>Cao<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m t\u01b0\u01a1ng lai v\u00e0 c\u00f4ng ngh\u1ec7 li\u00ean quan \u0111\u1ebfn l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/h2>\n<p>M\u00f4 h\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n c\u00f3 ti\u1ec1m n\u0103ng \u0111\u00e1ng k\u1ec3 cho c\u00e1c c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c \u1ee9ng d\u1ee5ng web th\u1eddi gian th\u1ef1c, ki\u1ebfn tr\u00fac kh\u00f4ng c\u00f3 m\u00e1y ch\u1ee7 v\u00e0 thi\u1ebft b\u1ecb Internet of Things (IoT).<\/p>\n<ol>\n<li>\n<p><strong>\u1ee8ng d\u1ee5ng web th\u1eddi gian th\u1ef1c<\/strong>: V\u1edbi s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 WebSockets v\u00e0 c\u00e1c th\u01b0 vi\u1ec7n nh\u01b0 Socket.IO, c\u00e1c \u1ee9ng d\u1ee5ng web c\u00f3 th\u1ec3 ph\u1ea3n h\u1ed3i t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng trong th\u1eddi gian th\u1ef1c, n\u00e2ng cao tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ebfn tr\u00fac kh\u00f4ng c\u00f3 m\u00e1y ch\u1ee7<\/strong>: Trong \u0111i\u1ec7n to\u00e1n kh\u00f4ng c\u00f3 m\u00e1y ch\u1ee7, c\u00e1c h\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n theo s\u1ef1 ki\u1ec7n, th\u1ef1c thi \u0111\u1ec3 ph\u1ea3n h\u1ed3i c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 m\u1edf r\u1ed9ng quy m\u00f4 n\u1ebfu c\u1ea7n.<\/p>\n<\/li>\n<li>\n<p><strong>Internet v\u1ea1n v\u1eadt<\/strong>: C\u00e1c thi\u1ebft b\u1ecb IoT t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00e1c s\u1ef1 ki\u1ec7n c\u1ea7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd, th\u01b0\u1eddng l\u00e0 theo th\u1eddi gian th\u1ef1c, khi\u1ebfn vi\u1ec7c l\u1eadp tr\u00ecnh theo h\u01b0\u1edbng s\u1ef1 ki\u1ec7n tr\u1edf n\u00ean v\u00f4 c\u00f9ng ph\u00f9 h\u1ee3p.<\/p>\n<\/li>\n<\/ol>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/h2>\n<p>Trong b\u1ed1i c\u1ea3nh m\u00e1y ch\u1ee7 proxy, l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 c\u00f3 l\u1ee3i trong vi\u1ec7c qu\u1ea3n l\u00fd kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng. V\u1ec1 c\u01a1 b\u1ea3n, m\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 kh\u00e1c v\u00e0 m\u1ed7i y\u00eau c\u1ea7u c\u1ee7a m\u00e1y kh\u00e1ch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n.<\/p>\n<p>M\u00e1y ch\u1ee7 proxy h\u01b0\u1edbng s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 x\u1eed l\u00fd kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00e1c y\u00eau c\u1ea7u m\u00e1y kh\u00e1ch n\u00e0y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y ch\u1ee7.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 nghi\u00ean c\u1ee9u s\u00e2u h\u01a1n v\u1ec1 l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n, h\u00e3y xem x\u00e9t c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Event-driven_programming\" target=\"_new\" rel=\"noopener nofollow\">L\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n - Wikipedia<\/a><\/li>\n<li><a href=\"https:\/\/www.codecademy.com\/learn\/learn-java\/modules\/learn-java-event-driven-programming\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1edbi thi\u1ec7u v\u1ec1 l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n<\/a><\/li>\n<li><a href=\"https:\/\/nodejs.dev\/learn\/the-nodejs-event-loop\" target=\"_new\" rel=\"noopener nofollow\">L\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n trong Node.js<\/a><\/li>\n<\/ol>\n<p>H\u00e3y nh\u1edb r\u1eb1ng, l\u1eadp tr\u00ecnh theo h\u01b0\u1edbng s\u1ef1 ki\u1ec7n l\u00e0 m\u1ed9t ch\u1ee7 \u0111\u1ec1 r\u1ed9ng l\u1edbn v\u00e0 h\u1ea5p d\u1eabn. V\u1edbi s\u1ef1 ph\u1ed5 bi\u1ebfn ng\u00e0y c\u00e0ng t\u0103ng c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng th\u1eddi gian th\u1ef1c, x\u1eed l\u00fd kh\u00f4ng \u0111\u1ed3ng b\u1ed9 v\u00e0 \u0111i\u1ec7n to\u00e1n ph\u00e2n t\u00e1n, vi\u1ec7c hi\u1ec3u v\u00e0 n\u1eafm v\u1eefng l\u1eadp tr\u00ecnh h\u01b0\u1edbng s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n x\u00e2y d\u1ef1ng ph\u1ea7n m\u1ec1m hi\u1ec7u qu\u1ea3, \u0111\u00e1p \u1ee9ng v\u00e0 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng.<\/p>","protected":false},"featured_media":468339,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477132","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Event-Driven Programming: The Revolution in Software Design<\/mark>","faq_items":[{"question":"What is event-driven programming?","answer":"<p>Event-driven programming is a programming paradigm that centers around events and event handlers. It could involve user actions like mouse clicks or key presses, or system-generated events such as loading files or triggering alarms.<\/p>"},{"question":"Where and when did event-driven programming originate?","answer":"<p>Event-driven programming originated from early graphical user interfaces (GUIs) in the late 1970s and early 1980s. The first mention of this paradigm was during the development of Smalltalk at Xerox PARC, an early object-oriented programming language that was heavily used in GUI design.<\/p>"},{"question":"How does event-driven programming work?","answer":"<p>Event-driven programming operates on the principle of an event loop which waits for events, and event handlers which process the events when they occur. The event loop retrieves events from an event queue and sends them to the respective event handlers for processing.<\/p>"},{"question":"What are the key features of event-driven programming?","answer":"<p>The key features of event-driven programming are its asynchronicity, loose coupling of events and handlers, and non-blocking I\/O operations, which make the applications highly responsive.<\/p>"},{"question":"What are some types of event-driven programming?","answer":"<p>Event-driven programming comes in several forms including Graphical User Interface (GUI) Programming where user actions trigger events, server applications where requests from clients are treated as events, and Time-Driven Programming where events are triggered by a timer.<\/p>"},{"question":"What are some challenges and solutions in event-driven programming?","answer":"<p>Event-driven programming can be challenging due to the asynchronous nature of event handling which can make control flow and debugging complex. However, modern programming languages and libraries offer solutions to these challenges with abstractions that help manage asynchronous control flow, such as Promises and async\/await in JavaScript, or Futures and async\/await in Dart.<\/p>"},{"question":"How does event-driven programming relate to future technologies?","answer":"<p>The event-driven model has significant potential for future technologies, particularly in real-time web applications, serverless architectures, and Internet of Things (IoT) devices. Real-time web applications can respond to user interactions immediately, serverless computing can execute functions in response to events, and IoT devices generate vast amounts of events that need to be processed often in real-time.<\/p>"},{"question":"How can proxy servers benefit from event-driven programming?","answer":"<p>In the context of proxy servers, event-driven programming can be beneficial in managing high volumes of client requests. Each client request can be treated as an event and handled asynchronously, enhancing server performance and responsiveness.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477132\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468339"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}