"author": {
      "@type": "Organization",
      "name": "Online UUID Generator"
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      "@type": "Organization",
      "name": "Online UUID Generator"
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      "@type": "WebPage",
      "@id": "https://online-uuid-generator.com/versions/v7/"
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---

Online UUID Generator - Version 7

UUID Version 7 is a time-based UUID that uses a Unix timestamp combined with random bits. It is designed to be sortable by creation time while ensuring high uniqueness and randomness, making it suitable for modern use cases that require both chronological sorting and secure identifiers.

Pros:

• Chronologically Sortable: Uses a timestamp prefix, allowing easy sorting by time of creation.
• High Entropy: Combines timestamps with random bits for improved uniqueness without privacy concerns.

Cons:

• Limited History: Relies on Unix timestamps, which may not be suitable for applications needing historical dates far in the past.
• Not Deterministic: Includes random bits, so it does not produce the same UUID for the same input conditions.

Best for: Use cases that require sortable, time-based IDs with a high degree of randomness, such as event logs, database indexing, or session tracking.

When to Choose UUID v7

Perfect for:

• Modern applications requiring sortable IDs
• Event logs and audit trails
• Database primary keys with time ordering
• Session tracking and request IDs
• Microservices architectures

Consider alternatives if you need:

• Random IDs: Use UUID Version 4 for unpredictable identifiers
• Deterministic IDs: Use UUID Version 5 for namespace-based generation
• Legacy compatibility: Use UUID Version 1 for older systems

Related UUID Versions

Compare with other versions:

• UUID Version 1 - Time-based with MAC address, less sortable
• UUID Version 3 - MD5 namespace-based
• UUID Version 4 - Random, most popular choice
• UUID Version 5 - SHA-1 namespace-based
• UUID Version 6 - Time-ordered but includes MAC address

Modern application implementation guides:

• JavaScript - React, Vue, and Node.js applications
• TypeScript - Type-safe modern web development
• Go - Cloud-native and containerized applications
• Rust - High-performance systems programming
• **View all languages →

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