Hey r/dotnet,

I'm a tech lead and I've seen some spectacular failures with distributed systems over the years. You know the ones - dual-write problems, missed webhooks, events disappearing into the void, cache stampedes taking down prod at 3am.

So in my free time I built Dragonfire - a suite of focused, production-ready .NET 8 libraries that solve these problems without forcing you to stand up Kafka, RabbitMQ, or Redis (unless you want to).

The highlights:

Dragonfire.Outbox - Transactional outbox pattern that solves the dual-write problem. Writes outbox rows in the same DB transaction as your domain data, background processor handles delivery with HMAC signing and retries. Achieved 1000 RPS message delivery on a single laptop.

Dragonfire.Inbox - Transactional inbox for receiving webhooks. Deduplicates by provider event ID, at-least-once delivery with exponential retry + dead-letter queue.

Dragonfire.Saga - Crash-safe workflows with compensation. Survives process restarts.

Dragonfire.Caching - Read-through with tag-based invalidation, stampede protection. Memory/Redis/Hybrid providers.

Dragonfire.ApiClientGen - CLI tool that generates typed HttpClient from Postman collections. No more magic strings.

Dragonfire.TraceKit - Distributed tracing helpers.

Dragonfire.WebhookPlatform - Complete webhook platform.

Plus logging, feature flags, tenant context, polling framework, scheduled syncs...

Why I built this:

Every package is independent - pull only what you need. No magic, everything is reachable through public API. Cross-cutting concerns (tenant, logging) automatically integrate across libraries.

The outbox is my personal favorite - I've seen teams try to implement this themselves and get subtle race conditions wrong. This one is battle-tested.

u/Forsaken-Search-9782

[Showoff Saturday] Dragonfire - A suite of .NET libraries for distributed systems (Outbox, Inbox, Caching, Sagas, and more)

The highlights:

Why I built this:

Links: