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In Choreography , microservices react to events autonomously. In Orchestration , an orchestrator orchestrates the sequence of commands and compensations.

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Aug 30, 2026

Quiz: What is the role of `response_model` parameter in path operation decorators?

response_model filters outbound data, ensuring private fields (e.g., hashed passwords) are stripped before returning payloads.

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Oct 25, 2026

Quiz: Why is gRPC often preferred over REST/JSON for high-throughput internal microservice-to-microservice communication?

gRPC leverages HTTP/2 streaming and compact binary Protocol Buffers , eliminating JSON parsing overhead and connection head-of-line blocking.

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Oct 25, 2026

Quiz: What is the primary role of a Protocol Buffers (`.proto`) definition file in gRPC architecture?

.proto files act as the single source of truth IDL, compiling via protoc into type-safe client stubs and server interfaces across languages.

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Oct 25, 2026

Quiz: In Event-Driven Architecture (EDA), what differentiates a message queue (RabbitMQ) from a distributed commit log (Apache Kafka)?

RabbitMQ is a traditional smart broker that routes and removes acknowledged messages. Kafka retains immutable event streams where multiple consumer groups replay from offsets.

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Oct 25, 2026

Quiz: What is the purpose of the Circuit Breaker pattern (e.g. Netflix Hystrix / tenacity) in microservice meshes?

A Circuit Breaker monitors failure rates. When failures exceed a threshold, it trips to OPEN state, failing immediately without exhausting server connection pools.

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