Posted On: Nov 9, 2023

Amazon Simple Notification Service (Amazon SNS) First-In-First-Out (FIFO) topics now support 3000 messages per second, per topic. All existing and future FIFO topics now have this new quota by default with no action required.

Amazon SNS is a messaging service for Application-to-Application (A2A) and Application-to-Person (A2P) communication. The A2A functionality provides topics for high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serverless applications. SNS Standard topics provide best-effort ordering and at-least-once-delivery, while SNS FIFO topics support strict ordering and exactly-once delivery. Both Standard and FIFO topics support message fan-out to multiple subscriptions, with high durability, security, and message filtering.

Amazon SNS message archiving and replay for FIFO topics is available in the Amazon Web Services China (Ningxia) region, operated by NWCD, and the Amazon Web Services China (Beijing) region, operated by Sinnet. To learn more, see message ordering and deduplication, in the Amazon SNS Developer Guide.