baidu/uid-generator

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

5562 stars · 1547 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

UidGenerator is a Java library that generates unique 64-bit IDs based on the Snowflake algorithm, working as an embeddable component with configurable worker ID bits and initialization strategies. It improves on vanilla Snowflake with RingBuffer caching, cache-line padding, and future-time consumption to reach over 6 million QPS per instance.

Use cases

• generate unique IDs for distributed database primary keys
• assign unique order IDs in a high-throughput e-commerce system
• generate unique identifiers in Docker or virtualized environments
• replace Twitter Snowflake with a higher-throughput Java ID generator
• generate non-sequential unique IDs for microservices

When to choose

• you need high-throughput unique ID generation in a Java application
• you run in virtualized/containerized environments where worker ID assignment is tricky
• you want configurable Snowflake bit allocation and worker ID strategies

When to avoid

• your stack is not Java/JVM based
• you need globally coordinated IDs with strict ordering guarantees
• you want a standalone ID generation service rather than an embedded component
• you need an actively developed project - updates are infrequent

Facets

library · maturity maintenance

sdk concurrency developer-tools microservices databases backend developer-tools jvm snowflake unique-id id-generator ring-buffer high-throughput docker

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markdown · JSON · MCP: product_card(name="baidu/uid-generator")