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The Outbox Pattern writes the event to a database table within the same ACID transaction as the entity, which a message relay then publishes to the broker.

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Oct 25, 2026

Quiz: Why is an 'Idempotency-Key' HTTP header essential for payment and mutation endpoints in distributed systems?

An Idempotency Key allows servers to identify and replay cached outcomes for network timeouts or retries, preventing duplicate mutations.

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Oct 25, 2026

Quiz: What does 'Backpressure' mean in distributed stream processing and asynchronous microservices?

Backpressure prevents consumer memory exhaustion by throttling upstream producer throughput to match consumer processing capacity.

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Oct 25, 2026

Quiz: What is the 'Strangler Fig' pattern when transitioning from a legacy monolith to microservices?

… incrementally replaces monolithic functionality with microservices behind an API gateway, minimizing migration risk.

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Oct 25, 2026

Quiz: What is the purpose of an API Gateway (e.g., Kong, Traefik, Envoy) in a microservices architecture?

An API Gateway shields internal microservices by consolidating perimeter concerns: authentication, SSL, rate-limiting, and client protocol translation.

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