# spring-cloud/spring-cloud-stream

Framework for building Event-Driven Microservices

Repository: https://github.com/spring-cloud/spring-cloud-stream
Canonical: https://ross.abutalabs.com/products/spring-cloud-stream
Homepage: http://cloud.spring.io/spring-cloud-stream
Language: Java
License: Apache-2.0
License Family: permissive
Topics: microservices, messaging, event-driven-microservices, stream-processing, reactive, cloud-native
Last push: 2026-09-02T10:30:31+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 86, longevity 100
- inputs: {"age_days": 4074, "days_push": 0, "days_rel": 13, "gap_med": 45.5, "n_releases_24m": 13}
- flags: no_readme
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1070, forks 645 (observed 2026-09-03T02:15:18.079408+00:00)

## What it is
Spring Cloud Stream is a Java framework for building event-driven microservices connected via messaging systems like Kafka and RabbitMQ. It provides declarative bindings and abstractions over messaging middleware so applications can send and receive events with minimal middleware-specific code.

## Use cases
- build event-driven microservices in Java
- consume messages from Kafka in a Spring Boot app
- publish domain events to RabbitMQ
- wire reactive stream processing between services
- decouple microservices with a message broker
- route messages across multiple binder middleware

## When to choose
- you are on the Spring/JVM stack and need messaging integration
- you want middleware-agnostic event-driven services with pluggable binders
- you need Spring Boot autoconfiguration for Kafka, RabbitMQ, or other brokers

## When to avoid
- you are not using Java/JVM languages
- you need a lightweight broker client without framework abstractions
- your use case is batch ETL rather than event streaming between services

## Facets
- artifact type: framework
- maturity: active
- function: message-queue, middleware, streaming, microservices, web-framework
- domain: microservices, backend, cloud-computing
- platform: jvm, cloud
- tags: event-driven, spring, kafka, rabbitmq, reactive, cloud-native, messaging, docker, kubernetes

## Member repositories
- spring-cloud/spring-cloud-stream (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:18.079408+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 2026-08-30T06:54:09.215794+00:00, confidence not recorded.
  - homepage: http://cloud.spring.io/spring-cloud-stream (fetched 2026-08-29T12:56:17.816870+00:00, sha 1277314c8a04)
- Data as of 2026-08-30T08:39:29.467469+00:00.