Queues

Decouple microservices and scale asynchronously with high-throughput message buffers.

Queues act as the shock absorbers of distributed systems: they ingest bursts of traffic and protect downstream services from overload. By using a producer-consumer pattern (like AWS SQS or RabbitMQ), you eliminate the need for immediate synchronous responses. This architecture ensures 99.99% availability even during database maintenance or API outages. Whether you are processing 1,000 image uploads per second or scheduling delayed email notifications, queues provide the persistence and retry logic necessary to prevent data loss.

https://aws.amazon.com/sqs/