Designing Reliable Message-Driven Systems

Welcome back to TechTalks with Manoj — where we stop pretending distributed systems are simple and start designing them like they’re not.

Today’s topic: message queues beyond the basics.

On diagrams, they look clean — producers, brokers, consumers, done.In production, they’re where consistency breaks, lag grows silently, and “exactly-once” turns out to mean “almost never.”

We’ll talk about delivery guarantees that actually matter, why idempotency is non-negotiable, how the outbox pattern saves you from data corruption, and when exactly-once is worth the cost — and when it absolutely isn’t.

If you’re building systems that have to survive retries, failures, and real traffic — not demos —this episode is for you.

Let’s get started. 🎙️

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