{"id":477353,"date":"2023-08-09T09:11:34","date_gmt":"2023-08-09T09:11:34","guid":{"rendered":""},"modified":"2023-09-05T11:14:33","modified_gmt":"2023-09-05T11:14:33","slug":"globally-unique-identifier-guid","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/globally-unique-identifier-guid\/","title":{"rendered":"M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID)"},"content":{"rendered":"<p>M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID), c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (UUID), l\u00e0 gi\u00e1 tr\u1ecb 128 bit \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 nh\u1eadn d\u1ea1ng duy nh\u1ea5t c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u1ef1c th\u1ec3 trong m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n ph\u00e2n t\u00e1n. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t m\u00e3 \u0111\u1ecbnh danh to\u00e0n c\u1ea7u, \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00f4ng c\u00f3 hai th\u1ef1c th\u1ec3 n\u00e0o c\u00f3 c\u00f9ng m\u00e3 \u0111\u1ecbnh danh, ngay c\u1ea3 tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng ho\u1eb7c m\u1ea1ng kh\u00e1c nhau. GUID \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u ng\u00e0nh kh\u00e1c nhau, bao g\u1ed3m ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy.<\/p>\n<h2>L\u1ecbch s\u1eed v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID) v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3.<\/h2>\n<p>Kh\u00e1i ni\u1ec7m S\u1ed1 nh\u1eadn d\u1ea1ng duy nh\u1ea5t to\u00e0n c\u1ea7u c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1980. T\u1ed5 ch\u1ee9c Ph\u1ea7n m\u1ec1m M\u1edf (OSF) \u0111\u00e3 gi\u1edbi thi\u1ec7u kh\u00e1i ni\u1ec7m UUID \u0111\u1ec3 gi\u1ea3i quy\u1ebft nhu c\u1ea7u v\u1ec1 m\u1ed9t m\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o tr\u00ean nhi\u1ec1u h\u1ec7 th\u1ed1ng v\u00e0 n\u1ec1n t\u1ea3ng kh\u00e1c nhau. \u0110\u1eb7c t\u1ea3 ban \u0111\u1ea7u \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong ti\u00eau chu\u1ea9n M\u00f4i tr\u01b0\u1eddng t\u00ednh to\u00e1n ph\u00e2n t\u00e1n (DCE) v\u00e0o n\u0103m 1988.<\/p>\n<p>L\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn thu\u1eadt ng\u1eef \u201cM\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u\u201d c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong \u0111\u1eb7c t\u1ea3 Cu\u1ed9c g\u1ecdi th\u1ee7 t\u1ee5c t\u1eeb xa DCE 1.1, trong \u0111\u00f3 UUID \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 GUID. Microsoft sau \u0111\u00f3 \u0111\u00e3 \u00e1p d\u1ee5ng thu\u1eadt ng\u1eef \u201cGUID\u201d khi tri\u1ec3n khai UUID cho n\u1ec1n t\u1ea3ng Microsoft Windows.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID)<\/h2>\n<h3>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a GUID<\/h3>\n<p>GUID \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng s\u1ed1 nguy\u00ean 128 bit, th\u01b0\u1eddng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng chu\u1ed7i th\u1eadp l\u1ee5c ph\u00e2n g\u1ed3m 32 k\u00fd t\u1ef1, \u0111\u01b0\u1ee3c nh\u00f3m th\u00e0nh n\u0103m ph\u1ea7n. C\u1ea5u tr\u00fac c\u1ee7a GUID \u0111i\u1ec3n h\u00ecnh nh\u01b0 sau:<\/p>\n<p><code data-no-translation=\"\">XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX<\/code><\/p>\n<p>M\u1ed7i \u201cX\u201d \u0111\u1ea1i di\u1ec7n cho m\u1ed9t ch\u1eef s\u1ed1 th\u1eadp l\u1ee5c ph\u00e2n (0-9, AF), t\u1ea1o ra t\u1ed5ng c\u1ed9ng 32 k\u00fd t\u1ef1 th\u1eadp l\u1ee5c ph\u00e2n. N\u0103m ph\u1ea7n c\u00f3 \u0111\u1ed9 d\u00e0i v\u00e0 \u00fd ngh\u0129a kh\u00e1c nhau:<\/p>\n<ol>\n<li>\n<p>D\u1eef li\u1ec7u1 (32 bit): 8 ch\u1eef s\u1ed1 th\u1eadp l\u1ee5c ph\u00e2n \u0111\u1ea7u ti\u00ean bi\u1ec3u th\u1ecb c\u00e1c bit quan tr\u1ecdng nh\u1ea5t c\u1ee7a GUID.<\/p>\n<\/li>\n<li>\n<p>Data2 (16 bit): 4 ch\u1eef s\u1ed1 th\u1eadp l\u1ee5c ph\u00e2n ti\u1ebfp theo bi\u1ec3u th\u1ecb c\u00e1c bit quan tr\u1ecdng ti\u1ebfp theo.<\/p>\n<\/li>\n<li>\n<p>D\u1eef li\u1ec7u3 (16 bit): 4 ch\u1eef s\u1ed1 th\u1eadp l\u1ee5c ph\u00e2n ti\u1ebfp theo bi\u1ec3u th\u1ecb c\u00e1c bit c\u00f3 \u00fd ngh\u0129a nh\u1ecf nh\u1ea5t.<\/p>\n<\/li>\n<li>\n<p>Data4 (48 bit): 12 ch\u1eef s\u1ed1 th\u1eadp l\u1ee5c ph\u00e2n cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c chia th\u00e0nh ba nh\u00f3m l\u1ea7n l\u01b0\u1ee3t l\u00e0 4, 2 v\u00e0 6 k\u00fd t\u1ef1.<\/p>\n<\/li>\n<\/ol>\n<h3>GUID ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/h3>\n<p>T\u00ednh duy nh\u1ea5t c\u1ee7a GUID \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c nhau, bao g\u1ed3m d\u1ea5u th\u1eddi gian hi\u1ec7n t\u1ea1i, \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a card m\u1ea1ng (n\u1ebfu c\u00f3) v\u00e0 tr\u00ecnh t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean. S\u1ef1 k\u1ebft h\u1ee3p n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng x\u00e1c su\u1ea5t t\u1ea1o ra hai GUID gi\u1ed1ng h\u1ec7t nhau l\u00e0 c\u1ef1c k\u1ef3 th\u1ea5p, ngay c\u1ea3 khi \u0111\u01b0\u1ee3c t\u1ea1o \u0111\u1ed3ng th\u1eddi tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c nhau.<\/p>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID)<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a GUID bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>T\u00ednh duy nh\u1ea5t<\/strong>: GUID \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ed9c nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u, gi\u1ea3m kh\u1ea3 n\u0103ng xung \u0111\u1ed9t khi t\u1ea1o s\u1ed1 nh\u1eadn d\u1ea1ng.<\/p>\n<\/li>\n<li>\n<p><strong>Th\u1ebf h\u1ec7 ph\u00e2n t\u00e1n<\/strong>: GUID c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o \u0111\u1ed9c l\u1eadp tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c nhau m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ed1i h\u1ee3p t\u1eadp trung.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 l\u1edbn<\/strong>: V\u1edbi 128 bit, s\u1ed1 l\u01b0\u1ee3ng GUID duy nh\u1ea5t theo l\u00fd thuy\u1ebft l\u00e0 2^128, cung c\u1ea5p m\u1ed9t kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 kh\u1ed5ng l\u1ed3.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u00f4ng c\u00f3 c\u01a1 quan trung \u01b0\u01a1ng<\/strong>: Kh\u00f4ng gi\u1ed1ng nh\u01b0 m\u1ed9t s\u1ed1 s\u01a1 \u0111\u1ed3 \u0111\u1ecbnh danh kh\u00e1c, GUID kh\u00f4ng d\u1ef1a v\u00e0o c\u01a1 quan trung \u01b0\u01a1ng \u0111\u1ec3 t\u1ea1o, khi\u1ebfn ch\u00fang \u0111\u01b0\u1ee3c ph\u00e2n c\u1ea5p v\u00e0 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i m\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID)<\/h2>\n<p>C\u00f3 m\u1ed9t s\u1ed1 phi\u00ean b\u1ea3n GUID, m\u1ed7i phi\u00ean b\u1ea3n c\u00f3 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o kh\u00e1c nhau. Nh\u1eefng c\u00e1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0:<\/p>\n<ol>\n<li>\n<p><strong>Phi\u00ean b\u1ea3n 1 (\u0110\u1ecba ch\u1ec9 MAC v\u00e0 D\u1ea5u th\u1eddi gian)<\/strong>: Phi\u00ean b\u1ea3n n\u00e0y bao g\u1ed3m \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a card m\u1ea1ng v\u00e0 d\u1ea5u th\u1eddi gian \u0111\u1ec3 mang l\u1ea1i t\u00ednh duy nh\u1ea5t. Tuy nhi\u00ean, n\u00f3 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn quy\u1ec1n ri\u00eang t\u01b0 v\u00ec n\u00f3 ti\u1ebft l\u1ed9 \u0111\u1ecba ch\u1ec9 MAC.<\/p>\n<\/li>\n<li>\n<p><strong>Phi\u00ean b\u1ea3n 4 (Ng\u1eabu nhi\u00ean)<\/strong>: Phi\u00ean b\u1ea3n n\u00e0y s\u1eed d\u1ee5ng tr\u00ecnh t\u1ea1o s\u1ed1 ho\u00e0n to\u00e0n ng\u1eabu nhi\u00ean \u0111\u1ec3 t\u1ea1o GUID, \u0111\u1ea3m b\u1ea3o m\u1ee9c \u0111\u1ed9 ri\u00eang t\u01b0 cao h\u01a1n.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID), c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng.<\/h2>\n<h3>C\u00f4ng d\u1ee5ng c\u1ee7a GUID:<\/h3>\n<ul>\n<li>\n<p><strong>B\u1ea3n ghi c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong>: GUID th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m kh\u00f3a ch\u00ednh cho c\u00e1c b\u1ea3n ghi c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00ec ch\u00fang \u0111\u1ea3m b\u1ea3o t\u00ednh duy nh\u1ea5t tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n.<\/p>\n<\/li>\n<li>\n<p><strong>Qu\u1ea3n l\u00fd m\u00e1y ch\u1ee7 proxy<\/strong>: GUID \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c theo d\u00f5i v\u00e0 qu\u1ea3n l\u00fd m\u00e1y ch\u1ee7 proxy, cung c\u1ea5p c\u00e1ch nh\u1eadn d\u1ea1ng duy nh\u1ea5t t\u1eebng m\u00e1y ch\u1ee7 proxy.<\/p>\n<\/li>\n<\/ul>\n<h3>V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p:<\/h3>\n<ul>\n<li>\n<p><strong>S\u1ef1 va ch\u1ea1m<\/strong>: M\u1eb7c d\u00f9 kh\u1ea3 n\u0103ng va ch\u1ea1m l\u00e0 c\u1ef1c k\u1ef3 th\u1ea5p nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 kh\u00f4ng th\u1ec3. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro n\u00e0y, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 tri\u1ec3n khai c\u01a1 ch\u1ebf ph\u00e1t hi\u1ec7n xung \u0111\u1ed9t v\u00e0 n\u1ebfu x\u1ea3y ra xung \u0111\u1ed9t, h\u00e3y t\u1ea1o l\u1ea1i GUID.<\/p>\n<\/li>\n<li>\n<p><strong>Chi ph\u00ed hi\u1ec7u su\u1ea5t<\/strong>: Vi\u1ec7c t\u1ea1o GUID c\u00f3 th\u1ec3 ti\u00eau t\u1ed1n nhi\u1ec1u t\u00e0i nguy\u00ean h\u01a1n c\u00e1c s\u01a1 \u0111\u1ed3 \u0111\u1ecbnh danh \u0111\u01a1n gi\u1ea3n h\u01a1n. B\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 c\u00e1c thu\u1eadt to\u00e1n hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m b\u1edbt chi ph\u00ed ho\u1ea1t \u0111\u1ed9ng n\u00e0y.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 c\u00e1c so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng v\u00e0 danh s\u00e1ch.<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0111\u1eb7c tr\u01b0ng<\/th>\n<th>H\u01af\u1edaNG D\u1eaaN<\/th>\n<th>URL<\/th>\n<th>\u0110\u1ecba ch\u1ec9 IP<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u00ednh duy nh\u1ea5t<\/td>\n<td>Duy nh\u1ea5t to\u00e0n c\u1ea7u<\/td>\n<td>C\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00e0 duy nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u<\/td>\n<td>Duy nh\u1ea5t trong m\u1ea1ng<\/td>\n<\/tr>\n<tr>\n<td>Chi\u1ec1u d\u00e0i<\/td>\n<td>128 bit (32 ch\u1eef s\u1ed1 th\u1eadp l\u1ee5c ph\u00e2n)<\/td>\n<td>C\u00f3 th\u1ec3 thay \u0111\u1ed5i, t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0i URL<\/td>\n<td>32 bit (IPv4) ho\u1eb7c 128 bit (IPv6)<\/td>\n<\/tr>\n<tr>\n<td>Ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o<\/td>\n<td>D\u1ea5u th\u1eddi gian, MAC v\u00e0 ng\u1eabu nhi\u00ean<\/td>\n<td>kh\u00f4ng \u00e1p d\u1ee5ng<\/td>\n<td>\u0110\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh b\u1edfi DHCP ho\u1eb7c t\u0129nh<\/td>\n<\/tr>\n<tr>\n<td>Bi\u1ec3u di\u1ec5n con ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c<\/td>\n<td>Chu\u1ed7i th\u1eadp l\u1ee5c ph\u00e2n<\/td>\n<td>Con ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c<\/td>\n<td>Con ng\u01b0\u1eddi kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1c quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID).<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, vi\u1ec7c s\u1eed d\u1ee5ng GUID d\u1ef1 ki\u1ebfn s\u1ebd v\u1eabn ph\u1ed5 bi\u1ebfn do t\u00ednh m\u1ea1nh m\u1ebd v\u00e0 linh ho\u1ea1t c\u1ee7a ch\u00fang. M\u1ed9t s\u1ed1 ti\u1ebfn b\u1ed9 ti\u1ec1m n\u0103ng trong t\u01b0\u01a1ng lai bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>C\u1ea3i thi\u1ec7n quy\u1ec1n ri\u00eang t\u01b0<\/strong>: Nh\u1eefng ti\u1ebfn b\u1ed9 trong vi\u1ec7c t\u1ea1o GUID c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ed1 nh\u1eadn d\u1ea1ng duy tr\u00ec t\u00ednh duy nh\u1ea5t trong khi ti\u1ebft l\u1ed9 th\u00f4ng tin \u00edt nh\u1ea1y c\u1ea3m h\u01a1n, t\u0103ng c\u01b0\u1eddng b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00e1c \u0111\u1ed9ng \u0111i\u1ec7n to\u00e1n l\u01b0\u1ee3ng t\u1eed<\/strong>: S\u1ef1 ra \u0111\u1eddi c\u1ee7a \u0111i\u1ec7n to\u00e1n l\u01b0\u1ee3ng t\u1eed c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 c\u1ee7a vi\u1ec7c t\u1ea1o GUID ng\u1eabu nhi\u00ean. S\u1ef1 ph\u00e1t tri\u1ec3n trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 xem x\u00e9t c\u00e1c thu\u1eadt to\u00e1n GUID kh\u00e1ng l\u01b0\u1ee3ng t\u1eed.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID).<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 internet, mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch kh\u00e1c nhau nh\u01b0 n\u00e2ng cao quy\u1ec1n ri\u00eang t\u01b0, b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t. GUID c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong vi\u1ec7c qu\u1ea3n l\u00fd v\u00e0 theo d\u00f5i m\u00e1y ch\u1ee7 proxy:<\/p>\n<ol>\n<li>\n<p><strong>Ph\u00e2n b\u1ed5 proxy<\/strong>: M\u1ed7i m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh m\u1ed9t GUID duy nh\u1ea5t trong qu\u00e1 tr\u00ecnh cung c\u1ea5p, gi\u00fap d\u1ec5 d\u00e0ng x\u00e1c \u0111\u1ecbnh v\u00e0 qu\u1ea3n l\u00fd c\u00e1c m\u00e1y ch\u1ee7 ri\u00eang l\u1ebb trong m\u1ea1ng proxy ph\u00e2n t\u00e1n.<\/p>\n<\/li>\n<li>\n<p><strong>Xoay v\u00f2ng proxy<\/strong>: GUID c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 theo d\u00f5i l\u1ecbch tr\u00ecnh lu\u00e2n chuy\u1ec3n m\u00e1y ch\u1ee7 proxy, \u0111\u1ea3m b\u1ea3o ph\u00e2n b\u1ed5 \u0111\u1ec1u vi\u1ec7c s\u1eed d\u1ee5ng proxy.<\/p>\n<\/li>\n<li>\n<p><strong>Y\u00eau c\u1ea7u ghi nh\u1eadt k\u00fd<\/strong>: GUID c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o nh\u1eadt k\u00fd y\u00eau c\u1ea7u do m\u00e1y ch\u1ee7 proxy t\u1ea1o ra, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng.<\/p>\n<\/li>\n<\/ol>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 M\u00e3 \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (GUID) v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang:<\/p>\n<ul>\n<li><a href=\"https:\/\/pubs.opengroup.org\/onlinepubs\/009629799\/\" target=\"_new\" rel=\"noopener nofollow\">DCE 1.1: Cu\u1ed9c g\u1ecdi th\u1ee7 t\u1ee5c t\u1eeb xa<\/a><\/li>\n<li><a href=\"https:\/\/docs.microsoft.com\/en-us\/windows\/win32\/com\/com-identifiers\" target=\"_new\" rel=\"noopener nofollow\">C\u1ea5u tr\u00fac GUID c\u1ee7a Microsoft<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc4122\" target=\"_new\" rel=\"noopener nofollow\">RFC 4122 \u2013 Kh\u00f4ng gian t\u00ean URN \u0111\u1ecbnh danh duy nh\u1ea5t to\u00e0n c\u1ea7u (UUID)<\/a><\/li>\n<\/ul>","protected":false},"featured_media":468480,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477353","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Globally Unique Identifier (GUID) in the World of Proxy Servers<\/mark>","faq_items":[{"question":"What is a Globally Unique Identifier (GUID)?","answer":"<p>A Globally Unique Identifier (GUID) is a 128-bit value used to uniquely identify objects or entities in distributed computing environments. It ensures that no two entities have the same identifier, even across different systems or networks.<\/p>"},{"question":"Where did the concept of GUID originate?","answer":"<p>The concept of GUIDs can be traced back to the early 1980s when the Open Software Foundation (OSF) introduced the concept of UUIDs. The first mention of the term \"Globally Unique Identifier\" can be found in the Distributed Computing Environment (DCE) standards in 1988.<\/p>"},{"question":"How does a GUID work?","answer":"<p>A GUID is a 128-bit integer represented as a hexadecimal string with 32 characters. It combines elements like a timestamp, MAC address (where available), and a random number generator to ensure uniqueness across systems.<\/p>"},{"question":"What are the key features of GUIDs?","answer":"<p>The key features of GUIDs include their uniqueness, distributed generation, large address space, and independence from a central authority for generation.<\/p>"},{"question":"What types of GUIDs exist?","answer":"<p>There are mainly two types of GUIDs commonly used - Version 1 (based on MAC address and timestamp) and Version 4 (randomly generated).<\/p>"},{"question":"How can GUIDs be used?","answer":"<p>GUIDs find widespread use as primary keys for database records, ensuring uniqueness across distributed systems. They are also vital in proxy server management, helping to uniquely identify and track individual servers.<\/p>"},{"question":"Are there any potential problems with GUIDs?","answer":"<p>While the probability of collisions is extremely low, it is not impossible. Organizations can implement collision detection mechanisms and regenerate GUIDs if needed. Generating GUIDs can also consume more resources than simpler identifier schemes, which can be mitigated using caching and efficient algorithms.<\/p>"},{"question":"How might GUIDs evolve in the future?","answer":"<p>The future might bring improved privacy with GUIDs revealing less sensitive information. Advancements may also consider quantum-resistant GUID algorithms due to the impact of quantum computing.<\/p>"},{"question":"How are proxy servers associated with GUIDs?","answer":"<p>Proxy servers use GUIDs for efficient management, such as allocation and rotation of servers, as well as for request logging, aiding in network activity analysis and troubleshooting.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477353","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\/477353\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468480"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}