outbox

Adds only one external dependency (google/uuid), keeping the library lean and easy to integrate without bloating the project, as highlighted in the README.

Supports multiple relational databases (PostgreSQL, MySQL, etc.) and any message broker via a simple publisher interface, offering flexibility in technology choices without vendor lock-in.

Provides both user-managed and library-managed transaction models, allowing developers to choose based on existing patterns or reduce boilerplate, as shown in the usage examples.

Exposes channels for errors and discarded messages, enabling seamless integration with metrics and alerting systems for monitoring poison messages and failures, detailed in the monitoring section.

Optional immediate async publishing after commit reduces latency, with the background reader as a fallback to ensure delivery guarantees, though it requires idempotent consumers.