What is Inngest for SaaS background jobs ?

Inngest is a serverless job queue that uses durable functions over webhooks — no Redis needed, with built-in sleeps, retries, and fan-out for emails, polls, cleanups.

How to replace BullMQ with Inngest?

Register functions in one API route, use cron triggers or events, swap loops for step.sendEvent fan-outs, and step.sleep for delays — cuts infra to zero.

Does Inngest cost money for small SaaS?

Free tier handles low-volume jobs indefinitely; scales to paid only when invocations spike with users.

🛠️ Developer Tools

5 Functions, No Redis, Zero Bucks: The Lean SaaS Job Queue That Actually Works

Forget the hype around serverless queues. One indie hacker built his entire SaaS background job system with five Inngest functions on a single route — for free. No Redis bills, no worker drama.

theAIcatchup Apr 10, 2026 4 min read

Diagram of Inngest functions replacing Redis and BullMQ in a SaaS app

⚡ Key Takeaways

Five Inngest functions replace Redis, BullMQ, cron — zero cost for drip email SaaS. 𝕏
step.sleep() and independent retries enable 48-hour jobs without hacks. 𝕏
Fan-out via events scales parallelism sans worker pools — indie hacker dream. 𝕏

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theAIcatchup

Community-driven. Code-first.

#Inngest #Redis alternative #SaaS architecture #SaaS background jobs #background jobs #durable-execution #serverless SaaS #serverless functions #serverless jobs #serverless queues

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Originally reported by Dev.to

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