FIFO Queues and Message Groups
~8 min read
How FIFO queues guarantee order while still allowing parallel processing across independent groups.
FIFO Queues and Message Groups is a Pro topic
Sign in, then upgrade to Pro or Power to unlock this topic and the full AWS curriculum.
Key points
- •Every FIFO message needs a MessageGroupId; strict order is guaranteed only within the same group
- •Different groups can be processed in parallel, avoiding unnecessary serialization
- •Choosing the right group ID granularity balances ordering guarantees against parallelism
- •FIFO queues also provide deduplication within a 5-minute window, stronger than Standard's best-effort behavior