aeron-io/agrona

Health v2 · maintenance only

Adoption not part of the score

3241 stars · 450 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Agrona is a Java library of high-performance data structures and utility methods, including primitive-specialized collections, lock-free queues, off-heap buffers, and a timer wheel. It underpins the Aeron messaging transport and Simple Binary Encoding codec.

Use cases

• avoid boxing overhead with int/long primitive collections in Java
• build low-latency lock-free queues for concurrent services
• work with on-heap and off-heap buffers with memory ordering semantics
• schedule timers with O(1) register and cancel using a timer wheel
• implement IPC communication with ring and broadcast buffers
• generate concurrent unique IDs with a Snowflake-style id generator
• track application telemetry with off-heap counters

When to choose

• building high-performance or low-latency Java applications
• developing on the JVM where primitive-specialized collections reduce GC pressure
• needing lock-free concurrency utilities or off-heap memory management in Java

When to avoid

• working outside the JVM ecosystem
• building simple applications where standard Java collections suffice
• needing a general-purpose data structure library with rich APIs rather than performance-focused primitives

Facets

library · maturity active

concurrency caching serialization developer-tools performance developer-tools jvm data-structures low-latency primitive-collections lock-free off-heap-memory ring-buffer timer-wheel java algorithms

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