{"id":479445,"date":"2023-08-09T10:40:10","date_gmt":"2023-08-09T10:40:10","guid":{"rendered":""},"modified":"2023-09-05T11:18:49","modified_gmt":"2023-09-05T11:18:49","slug":"universally-unique-identifier","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/my\/wiki\/universally-unique-identifier\/","title":{"rendered":"Pengecam unik universal"},"content":{"rendered":"<p>Maklumat ringkas tentang pengecam unik Universal<\/p>\n<p>Pengecam unik universal (UUID) ialah nombor 128-bit yang digunakan untuk mengenal pasti maklumat dalam sistem komputer. Ia biasanya digunakan untuk melabel data dengan rujukan unik tanpa bergantung pada pihak berkuasa pusat atau penyelarasan antara pihak.<\/p>\n<h2>Sejarah Asal Usul Pengecam Unik Sejagat dan Sebutan Pertamanya<\/h2>\n<p>UUID pertama kali ditakrifkan sebagai sebahagian daripada Sistem Pengkomputeran Rangkaian Apollo pada awal 1980-an. Spesifikasi piawai pertama telah diterbitkan pada tahun 1990 sebagai sebahagian daripada Persekitaran Pengkomputeran Teragih (DCE) Yayasan Perisian Terbuka (OSF). Sejak itu, UUID telah menjadi standard biasa yang digunakan merentas banyak sistem dan protokol.<\/p>\n<h2>Maklumat Terperinci tentang Pengecam Unik Sejagat: Meluaskan Topik<\/h2>\n<p>UUID digunakan secara meluas dalam pembinaan perisian sebagai pengecam yang kekal unik merentas sistem, peranti dan titik masa. Piawaian ISO\/IEC 9834-8:2014 mentakrifkan spesifikasi rasmi UUID. Ia digunakan dalam pelbagai aplikasi, dari sistem fail hingga ke kunci pangkalan data.<\/p>\n<h2>Struktur Dalaman Pengecam Unik Sejagat: Cara Pengecam Unik Sejagat Berfungsi<\/h2>\n<p>UUID terdiri daripada lima bahagian: 32-bit masa-rendah, 16-bit masa-pertengahan, 16-bit masa-tinggi-dan-versi, 8-bit clock-seq-and-reserved, 8-bit clock-seq- nod rendah dan 48-bit. Reka letak menyediakan varians yang mencukupi untuk memastikan pendua tidak mungkin berlaku.<\/p>\n<h2>Analisis Ciri Utama Pengecam Unik Sejagat<\/h2>\n<ul>\n<li><strong>Keunikan:<\/strong> Ciri utama UUID ialah keunikannya merentas ruang dan masa.<\/li>\n<li><strong>Berasaskan piawaian:<\/strong> Ditakrifkan oleh piawaian antarabangsa.<\/li>\n<li><strong>Tiada Pihak Berkuasa Pusat:<\/strong> UUID boleh dijana secara bebas oleh sistem yang berbeza tanpa memerlukan pihak berkuasa pusat.<\/li>\n<li><strong>serba boleh:<\/strong> Digunakan dalam pelbagai aplikasi daripada sistem fail kepada protokol rangkaian.<\/li>\n<\/ul>\n<h2>Jenis Pengecam Unik Sejagat<\/h2>\n<p>Terdapat lima versi UUID, setiap satu mempunyai tujuan yang berbeza:<\/p>\n<table>\n<thead>\n<tr>\n<th>Versi<\/th>\n<th>Penerangan<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>Berdasarkan alamat MAC dan cap masa<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>DCE Security, dengan POSIX UID<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Berdasarkan cincangan MD5 dan ruang nama<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Dijana secara rawak<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Berdasarkan cincang SHA-1 dan ruang nama<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Cara Menggunakan Pengecam Unik Sejagat, Masalah dan Penyelesaiannya Berkaitan dengan Penggunaan<\/h2>\n<p>UUID digunakan dalam pelbagai aplikasi:<\/p>\n<ul>\n<li><strong>Pangkalan data:<\/strong> Sebagai kunci unik untuk rekod.<\/li>\n<li><strong>Sistem Fail:<\/strong> Untuk mengenal pasti fail secara unik.<\/li>\n<li><strong>Rangkaian:<\/strong> Untuk pengenalan sesi.<\/li>\n<\/ul>\n<p><strong>Masalah:<\/strong><\/p>\n<ul>\n<li><strong>Perlanggaran:<\/strong> Jarang, perlanggaran boleh berlaku.<\/li>\n<li><strong>Prestasi:<\/strong> Penjanaan mungkin menjejaskan prestasi.<\/li>\n<\/ul>\n<p><strong>Penyelesaian:<\/strong><\/p>\n<ul>\n<li><strong>Menggunakan Versi 4:<\/strong> Mengurangkan kemungkinan perlanggaran.<\/li>\n<li><strong>Perpustakaan Dioptimumkan:<\/strong> Menggunakan perpustakaan yang cekap untuk menjana UUID.<\/li>\n<\/ul>\n<h2>Ciri Utama dan Perbandingan Lain dengan Istilah Serupa<\/h2>\n<ul>\n<li><strong>UUID vs GUID:<\/strong> GUID ialah pelaksanaan Microsoft bagi UUID. Kedua-duanya adalah nilai 128-bit, dan GUID sering digunakan secara bergantian dengan UUID.<\/li>\n<li><strong>Keunikan Merentas Sistem:<\/strong> Tidak seperti ID tempatan, UUID mengekalkan keunikan merentas sistem.<\/li>\n<\/ul>\n<h2>Perspektif dan Teknologi Masa Depan Berkaitan dengan Pengecam Unik Sejagat<\/h2>\n<p>Teknologi baru muncul mungkin memanfaatkan UUID untuk meningkatkan keselamatan dan kesalingoperasian, dan versi baharu mungkin diperkenalkan untuk menampung keperluan yang berubah-ubah dan piawaian kriptografi.<\/p>\n<h2>Cara Pelayan Proksi Boleh Digunakan atau Dikaitkan dengan Pengecam Unik Sejagat<\/h2>\n<p>Pelayan proksi seperti yang disediakan oleh OneProxy mungkin menggunakan UUID untuk mengenal pasti secara unik sesi pengguna atau menjejak paket data. Dengan menggunakan UUID, pelayan proksi boleh mengurus sambungan dengan cekap tanpa perlanggaran dan mengekalkan privasi dan keselamatan.<\/p>\n<h2>Pautan Berkaitan<\/h2>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc4122\" target=\"_new\" rel=\"noopener nofollow\">RFC 4122: Ruang Nama URN Pengecam Unik Sejagat (UUID).<\/a><\/li>\n<li><a href=\"https:\/\/www.iso.org\/standard\/66146.html\" target=\"_new\" rel=\"noopener nofollow\">ISO\/IEC 9834-8:2014<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/my\/\" target=\"_new\" rel=\"noopener\">Laman Web OneProxy<\/a> untuk butiran tentang cara UUID boleh digunakan dalam pengurusan pelayan proksi.<\/li>\n<\/ul>","protected":false},"featured_media":479446,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479445","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Universally Unique Identifier (UUID)<\/mark>","faq_items":[{"question":"What is a Universally Unique Identifier (UUID)?","answer":"<p>A Universally Unique Identifier (UUID) is a 128-bit number used to uniquely identify information in computer systems. It is a standardized and globally unique identifier without the need for central coordination.<\/p>"},{"question":"How did UUIDs originate, and when were they first mentioned?","answer":"<p>UUIDs were first defined as part of the Apollo Network Computing System in the early 1980s. The first standardized specification was published in 1990 as part of the Open Software Foundation's (OSF) Distributed Computing Environment (DCE).<\/p>"},{"question":"How do UUIDs work, and what is their internal structure?","answer":"<p>UUIDs consist of five parts: a 32-bit time-low, 16-bit time-mid, 16-bit time-high-and-version, 8-bit clock-seq-and-reserved, 8-bit clock-seq-low, and 48-bit node. This structure ensures their uniqueness across space and time.<\/p>"},{"question":"What are the key features of UUIDs?","answer":"<p>The key features of UUIDs include:<\/p><ul><li>Uniqueness: UUIDs are globally unique across different systems and devices.<\/li><li>Standards-based: They are defined by the ISO\/IEC 9834-8:2014 international standard.<\/li><li>No Central Authority: UUIDs can be generated independently without requiring coordination from a central authority.<\/li><li>Versatility: They are used in various applications, including file systems, databases, and network protocols.<\/li><\/ul>"},{"question":"What are the different types of UUIDs?","answer":"<p>There are five versions of UUIDs, each serving different purposes:<\/p><ol><li>Version 1: Based on MAC address and timestamp.<\/li><li>Version 2: DCE Security, with POSIX UIDs.<\/li><li>Version 3: Based on MD5 hash and a namespace.<\/li><li>Version 4: Randomly generated.<\/li><li>Version 5: Based on SHA-1 hash and a namespace.<\/li><\/ol>"},{"question":"How are UUIDs used, and what are the associated problems and solutions?","answer":"<p>UUIDs are used in various applications, such as databases, file systems, and networking, to uniquely identify information. However, problems like collisions and potential performance issues may arise.<\/p><p>To address these issues, developers can use Version 4 UUIDs to reduce collision probabilities and optimize libraries for efficient UUID generation.<\/p>"},{"question":"How do UUIDs compare to GUIDs, and what makes them unique across systems?","answer":"<p>GUID (Globally Unique Identifier) is a Microsoft implementation of UUID, both being 128-bit values. UUIDs maintain their uniqueness across systems, unlike local IDs, making them suitable for cross-platform applications.<\/p>"},{"question":"What does the future hold for UUIDs, and how are they associated with proxy servers like OneProxy?","answer":"<p>In the future, UUIDs may see advancements to accommodate evolving cryptographic standards and enhance security and interoperability. Proxy servers like OneProxy can utilize UUIDs to uniquely identify user sessions and manage connections efficiently, ensuring privacy and security.<\/p><p>For more information and applications of UUIDs, please visit the provided related links.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/my\/wp-json\/wp\/v2\/wiki\/479445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/my\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/my\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/my\/wp-json\/wp\/v2\/wiki\/479445\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/my\/wp-json\/wp\/v2\/media\/479446"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/my\/wp-json\/wp\/v2\/media?parent=479445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}