Penjana UUID

Alat dalam talian percuma generate uuids instantly. free online uuid generator supports uuid v4 (random), uuid v7 (time-ordered), and bulk generation. copy with one click. no sign-up needed.

Apakah Penjana UUID?

A powerful developer tool designed to help you work more efficiently. UUID Generator provides accurate results instantly with a clean, intuitive interface. Perfect for developers, engineers, and IT professionals.

Rumus

UUID v4 format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

Where x is a rawak hex digit and y is one of 8, 9, A, or B (RFC 4122 variant).

Total combinations: ~5.3 × 10^36

Cara Mengira

Enter your input in the field above.
Configure any available options to customize the output.
View the results instantly with real-time updates.
Copy or export your results for use in your projects.

Contoh

dijana UUID: 550e8400-e29b-41d4-a716-446655440000 — a standard v4 UUID with the 4 in position 13 indicating version 4, and "a" in position 17 indicating the RFC 4122 variant.

Faedah Utama

Get accurate results instantly in your browser.
Save time with real-time calculations as you type.
No data leaves your device - complete privacy.
Free to use on any device, no sign-up required.

Kesilapan Biasa

Menggunakan ID berjujukan dan bukannya UUID untuk sistem teragih
Assuming UUIDs are sortable by time (Guna UUID v7 for time-sortable)
Menyimpan UUID sebagai rentetan dan bukannya binari untuk prestasi

Tips Pro

Guna UUID v4 for general-purpose unique IDs
Simpan UUID sebagai binary(16) dalam pangkalan data untuk prestasi
Guna UUID v7 if time-ordered sorting is needed
Never jana UUIDs client-side for security-critical applications

Istilah Utama

UUID: Pengecam Unik Sejagat
UUID v4: rawak version 4 UUID
GUID: Istilah Microsoft untuk UUID
RFC 4122: Dokumen penyeragaman UUID

Kegunaan Biasa

Kunci utama pangkalan data untuk sistem teragih
Pengecam sumber API
User session token
ID pesanan dan transaksi

Soalan Lazim

Apakah a UUID?

UUID (Universally Unique Identifier) is a 128-bit identifier standardized by RFC 4122. Version 4 UUIDs are rawakly dijana and practically guaranteed to be unique across systems.

Seberapa unik UUID?

Extremely unique. There are 5.3×10^36 possible v4 UUIDs. The probability of collision is so low that anda could jana 1 billion UUIDs per second for 100 years and still have near-zero collision risk.

What are UUIDs Gunad for?

UUIDs are used as database primary keys, API resource identifiers, session token, transaction IDs, and anywhere unique identifiers are needed without a central authority.

Apakah the difference between UUID and GUID?

GUID (Globally Unique Identifier) adalah pelaksanaan Microsoft bagi standard UUID. Ia adalah sama dari segi fungsi dan boleh ditukar ganti.

Alat berkaitan

Kalkulator Rasio Aspek

Kalkulator Bandwidth

Kalkulator masa Pengunduhan

Kalkulator kos Hosting Cloud

Kalkulator kos CDN

Kalkulator Monetisasi Antarmuka Pemrograman aplikasi