namastack/namastack-outbox

Namastack Outbox is a production-ready Spring Boot library implementing the Transactional Outbox Pattern for reliable event-driven architectures. It provides atomic persistence of business events alongside domain data, ensuring no messages are lost, with built-in retry logic, horizontal scaling through partitioned processing, and integrations for Kafka and RabbitMQ. The library is designed for Java and Kotlin developers building microservices who need guaranteed event delivery with observability, context propagation, and zero vendor lock-in across multiple database systems.