# AxonIQ/AxonFramework

Framework for Evolutionary Message-Driven Microservices on the JVM

Repository: https://github.com/AxonIQ/AxonFramework
Canonical: https://ross.abutalabs.com/products/axonframework
Homepage: https://axoniq.io/
Language: Java
License: Apache-2.0
License Family: permissive
Topics: java, cqrs, performance, scalability, event-sourcing, domain-driven-design, message-driven, dynamic-consistency-boundary, dcb, ddd, domaindrivendesign, dynamicconsistencyboundary
Last push: 2026-08-26T22:44:15+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 98, longevity 100
- inputs: {"age_days": 5388, "days_push": 7, "days_rel": 19, "gap_med": 15.0, "n_releases_24m": 29}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3614, forks 847 (observed 2026-08-28T04:08:11.712677+00:00)

## What it is
Axon Framework is a JVM framework for building evolutionary, message-driven microservices based on Domain-Driven Design, CQRS, and Event Sourcing. It provides building blocks such as aggregates, command/query buses, sagas, and event stores, with optional Axon Server for distributed messaging and scalable event storage.

## Use cases
- build event-sourced microservices in Java
- implement CQRS with command and query buses
- model domain logic with DDD aggregates
- orchestrate long-running processes with sagas
- scale event-driven systems across nodes
- maintain an immutable audit trail of business decisions

## When to choose
- you want first-class CQRS and Event Sourcing support on the JVM
- you follow Domain-Driven Design and need aggregate/saga building blocks
- you need location-transparent messaging to evolve toward distributed microservices
- you need provable, auditable event histories for regulated workloads

## When to avoid
- you need a simple CRUD application without event-driven complexity
- your team is unfamiliar with DDD/CQRS concepts and the learning curve is prohibitive
- you want a lightweight library rather than an opinionated full framework
- you are not on the JVM

## Facets
- artifact type: framework
- maturity: stable
- function: message-queue, web-framework, middleware, serialization, database
- domain: backend, microservices, developer-tools, apis
- platform: jvm, cross-platform
- tags: cqrs, event-sourcing, ddd, message-driven, microservices, sagas, event-store, axon-server

## Member repositories
- AxonIQ/AxonFramework (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:11.712677+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:33:36.005591+00:00, confidence not recorded.
  - readme: https://github.com/AxonIQ/AxonFramework (fetched 2026-08-28T04:08:11.712677+00:00, sha 5afe6496fc5e)
  - homepage: https://axoniq.io/ (fetched 2026-08-29T09:26:45.364337+00:00, sha 93453d2c5e5b)
  - site_page: https://www.axoniq.io/pricing (fetched 2026-08-29T09:26:45.371896+00:00, sha 615a792000eb)
- Data as of 2026-08-30T08:39:29.467469+00:00.