Operators propose promoting RDS read replicas to “decouple” write-h…

Question

Operators propose promoting RDS read replicas to “decouple” write-heavy permit processing spikes. What clarification should the architect make?

Accepted Answer

Use read replicas to scale read traffic, and use queues such as Amazon SQS to decouple write processing from producers. — Replicas are extra librarians for people reading the card catalog; queues are the inbox that keeps writers from shouting over the desk. Promoting a reader into a magic write-decoupler mixes up the tools.

Answer

Read replicas both scale writes linearly and replace all messaging for asynchronous work.

Answer

Delete the primary database and write only to read replicas to achieve loose coupling.

Answer

Replace both replicas and queues with larger NAT gateways to absorb application back-pressure.

Operators propose promoting RDS read replicas to “decouple” write-heavy permit processing spikes. What clarification should the architect make?

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