Moleculer Microservices Framework

Moleculer is a fast, modern, and powerful microservices framework for Node.js, designed to build efficient, reliable, and scalable distributed systems. It provides a comprehensive set of features including a promise-based request-reply mechanism, event-driven architecture, dynamic service discovery, load balancing, and fault tolerance capabilities like Circuit Breaker and Retry. The current stable version is 0.15.0, with frequent minor and patch releases, and major updates approximately annually, often introducing significant breaking changes. Key differentiators include its pluggable architecture for transporters (e.g., NATS, Redis, Kafka), serializers (e.g., MsgPack, CBOR), caching, loggers, and metrics/tracing reporters. It emphasizes a master-less architecture, making all nodes equal, and comes with built-in parameter validation and extensive TypeScript support.