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Show HN: Hiraeth – AWS Emulator

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Why This Matters

Hiraeth offers a lightweight, local AWS emulator primarily for testing and development, enabling developers to simulate SQS operations without relying on actual AWS infrastructure. This can significantly streamline testing workflows, reduce costs, and improve debugging capabilities for developers working with AWS services. While early in its development, it promises to be a valuable tool for local testing environments in the tech industry.

Key Takeaways

Hiraeth

Hiraeth is a local AWS emulator focused on fast integration testing. The first release target is SQS: signed AWS SDK requests go through a local HTTP endpoint, state is stored in SQLite, and an optional web UI exposes the local emulator state for debugging.

This project is early. It is intended for local development and test environments, not as a production AWS replacement.

Current Scope

AWS SigV4 header authentication with a seeded local test credential.

SQLite-backed principals, access keys, queues, messages, attributes, and tags.

SQS-compatible endpoint for common queue and message operations.

Web admin UI on a separate port for inspecting local emulator state.

Docker and Docker Compose support.

SQLx offline query metadata for checked SQL builds.

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