In this video, we do a hands-on deep dive into AWS Lambda using a real serverless voting application built with API Gateway, Lambda, and DynamoDB.
This is NOT a theory video — we test real production-style scenarios that appear in the AWS Developer Associate exam and real-world serverless systems.
🚀 What you will learn
✔ How Lambda memory controls CPU performance
✔ How /tmp storage works for large file processing
✔ Lambda timeout configuration (3s → 15 minutes)
✔ Why 504 errors happen and how to fix them
✔ How Lambda concurrency really works
✔ Reserved vs Provisioned Concurrency (Cold Start vs Warm Start)
✔ How throttling happens at Lambda level
✔ Lambda Versions & Aliases for safe deployments
✔ Traffic shifting (10%, 50%, 100%) between Lambda versions
✔ Zero-downtime deployments using Lambda Alias + API Gateway
✔ Asynchronous Lambda execution
✔ Retries, Dead Letter Queue (DLQ) and failure handling
#AWSLambda #AWSDeveloperAssociate #Serverless #APIGateway #CloudComputing #AWSExam #DevOps #LambdaConcurrency #LambdaAlias #AWSTutorial
