Smart-meter ingest must keep accepting readings even if the downstream database is briefly unavailable. Which fault-tolerance pattern fits?
Select an answer to reveal the explanation.
Short Explanation
When the database takes a coffee break, don’t bounce the meters—park the readings in SQS and drain the queue when the DB is back.
Full Explanation
Amazon SQS provides a durable buffer that absorbs downstream outages, improving fault tolerance for distributed ingest. Synchronous SQL from meters, dropping data, or single-host instance store staging couple failure domains and risk data loss.