Amazon SQS (Simple Queue Service)

Overview

Amazon SQS is a fully managed message queuing service for decoupling and scaling microservices, distributed systems, and serverless apps.

Real-life Use Cases

• Cloud Architect: Design asynchronous workflows for order processing.

• DevOps Engineer: Buffer jobs for batch processing pipelines.

Terraform Example

resource "aws_sqs_queue" "job_queue" {
  name = "job-queue"
}

AWS CLI Example

aws sqs create-queue --queue-name job-queue

Best Practices

• Use dead-letter queues for failed messages.

• Set appropriate visibility timeouts.

Common Pitfalls

• Not handling message duplication.

• Ignoring queue length metrics.

Joke: Why did the SQS message get lost? It took the wrong queue!