AWS Hands-On Lab: SNS Topic, SQS Queue, Lambda Consumer & DLQ Deep Dive

Master AWS event-driven architecture in this hands-on lab covering the complete workflow: SNS → SQS ← Lambda, message failures, DLQ handling, and redrive operations. In this step-by-step demo, you will learn: 🔹 What we build Create an SNS Topic Create an SQS Dead Letter Queue (DLQ) Create the Main SQS Queue Subscribe Main Queue to the SNS Topic Create a Lambda function to process Main Queue messages Update Lambda IAM role for CloudWatch Logs and SQS access Configure Lambda Trigger for the Main Queue 🔹 What we test Publish a successful message from SNS → SQS → Lambda Publish a failure message to simulate Lambda processing errors Observe: Failed messages stay in Main Queue After maxReceiveCount → messages move to DLQ Demonstrate Redrive from DLQ back to Main Queue 🔹 Bulk Message Test (AWS CLI) Send 30 messages 15 success payloads 15 failure payloads (Lambda forced failure logic) Track: Message movement Receive count increments DLQ entries & behavior 🔔 Subscribe for more LinkedIn Profile: -   / bhaweshkumar   Personal Website: - https://www.bhaweshkumar.com/ Certifications: - https://www.youracclaim.com/users/bha... Udemy profile: https://www.udemy.com/user/bhawesh-kumar Instagram: -   / awscloudbytes   Blog: - https://www.ilucidify.com Git Lab - https://github.com/bhaweshkumar/demo-...