Question

A retail company uses Amazon SQS standard queues to decouple its web tier from a fleet of backend worker instances that process order-fulfillment messages. During a planned 3-day maintenance window, the worker fleet will be completely shut down, but the web tier must continue accepting and enqueuing orders. The team is concerned that messages could be lost before the workers come back online. Which action ensures messages remain available for processing when the workers restart?

Accepted Answer

Increase the queue's message retention period to a value that exceeds the maintenance window (up to 14 days).

Answer

Increase the visibility timeout on the queue to cover the full 3-day maintenance window.

Answer

Enable long polling on the queue to hold messages until the workers reconnect.

Answer

Convert the standard queue to a FIFO queue to guarantee messages are not deleted during the outage.