What is this tool
The ULID Generator is a professional online unique identifier generator. ULID stands for Universally Unique Lexicographically Sortable Identifier. It combines timestamp and random characters, featuring global uniqueness like UUID and natural sorting capability. It solves the problem that traditional UUIDs are unordered and lead to poor database index performance. A standard ULID is a 26-character string composed of timestamp and random segments, sorted chronologically. It is widely used as primary keys for distributed databases, message queue IDs, log numbers and business serial numbers. This browser-based tool generates single or bulk standard ULIDs with one click and fully complies with official specifications. Users can copy single items or all results conveniently. The tool runs fast and ensures standardized output for architecture design, development and daily number creation.
Use Cases
- 1.Distributed Database Design: Use ULID as table primary keys to optimize index and query performance with its sorting feature.
- 2.Message Queue & Logs: Generate unique IDs for messages and system logs to retrieve and organize data by time easily.
- 3.Business Serial Numbers: Create serial numbers for orders, work orders and approval processes with both uniqueness and time sequence.
- 4.Microservice Development: Use ULID as unique request IDs for link tracing and troubleshooting in microservice communication.
- 5.Technical Learning: Compare ULID, UUID and auto-increment IDs, and learn the design ideas of distributed unique IDs.
Why does this tool exist
ID generation is a key part of architecture design for distributed systems and microservices. Traditional UUIDs are globally unique but unordered, which causes index fragmentation and slow queries when used as database primary keys. Database auto-increment IDs cannot guarantee global uniqueness in sharded databases and multi-node clusters. With the advantages of order, uniqueness and parsable timestamp, ULID has become a popular choice for modern projects.
Generating ULID natively requires importing dedicated libraries or writing custom code. Bulk generation needs extra loop logic, which is inefficient for temporary testing. Many developers are unfamiliar with ULID rules and tend to make format and length errors when constructing manually. Dedicated desktop tools for ULID are rare, so installing special software just for ID generation is impractical.
This online ULID Generator requires no extra libraries or coding. It generates standard ULIDs in single or bulk mode instantly. It lowers the usage threshold and helps architects and developers generate and test IDs quickly, making full use of ULID's strengths to improve the performance of databases, message services and other modules.