nats-vigil-messaging

Migrate messaging from n8n to NATS JetStream by setting up a minimal vigil-api and small NATS cluster, then incrementally moving workers (detection, PII, arbiter) to the new platform. This Skill provides step-by-step migration planning from a 24-node n8n system to NATS-based workers with stream and consumer configuration.

NATS JetStream delivers at-least-once and exactly-once persistence, replay capability, automatic acknowledgements, deduplication windows, and retention policies. This Skill covers configuring these guarantees along with Dead Letter Queues, R3 replication, and storage modes for production messaging systems.

Design NATS JetStream streams and consumers by configuring backpressure handling, setting retention policies, and managing consumer acknowledgement patterns. This Skill details stream architecture, consumer configuration, and how to handle flow control in a distributed worker system.

Yes, NATS JetStream supports public REST and SDK APIs through request-reply patterns. This Skill provides API design patterns, request validation, rate limiting, and auto-scaling strategies for exposing JetStream messaging to external clients.

Configure Dead Letter Queues by setting up dedicated streams for failed messages, defining retry policies, and managing consumer acknowledgement failures. This Skill covers DLQ patterns, failure handling, and recovery procedures for migrated Vigil Guard workflows.

NATS JetStream provides TLS encryption, rate limiting, auto-scaling, and R3 replication for high availability. This Skill addresses production deployment requirements including cluster setup, security configuration, and operational monitoring for the Vigil Guard system.