lagom/lagom

Health v2 · maintenance only

Adoption not part of the score

2627 stars · 618 forks observed · 2026-08-28

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

Lagom is an open-source reactive microservices framework for the JVM, available in both Java and Scala APIs, built on Akka and Play. It provides an opinionated, high-productivity development environment with built-in service discovery, event sourcing, CQRS, and Kafka-based messaging, though it was deprecated in July 2023.

Use cases

• build reactive microservices on the JVM
• implement event sourcing and CQRS in Java or Scala
• decouple services with Kafka message broker
• run a microservices dev environment with service locator and gateway
• persist entities with Cassandra or relational databases
• learn reactive microservice architecture patterns

When to choose

• maintaining an existing Lagom codebase through its support window
• studying reactive microservice design and event sourcing patterns
• your organization already has commercial Lightbend support

When to avoid

• starting a new microservices project (deprecated July 2023, patches end July 2024)
• you want long-term community support or active development
• prefer Akka directly, which now includes most Lagom features
• you need a managed platform (consider Kalix instead)

Facets

framework · maturity abandoned

web-framework microservices message-queue streaming rpc service-discovery microservices backend web-development jvm cross-platform reactive event-sourcing cqrs akka play-framework kafka cassandra deprecated messaging

Member repositories

For agents

markdown · JSON · MCP: product_card(name="lagom/lagom")