AWS Lambda Tutorial for Developer Associate Exam (DVA-C02) 2026
Master AWS Lambda for the AWS Developer Associate (DVA-C02) certification exam in just 10 minutes! This focused exam prep guide covers everything you need to know about Lambda without reading 3,000 pages of documentation.
🎯 WHAT YOU'LL LEARN:
✅ Lambda service quotas and limits (function timeout, memory, layers)
✅ CPU and memory configuration relationship
✅ Reserved vs Provisioned Concurrency (when to use each)
✅ Performance tuning with Lambda Power Tuning
✅ Connection reuse best practices
✅ Event lifecycle: Synchronous vs Asynchronous invocation
✅ Error handling: Dead Letter Queues vs Lambda Destinations
✅ Polling-based invocation (SQS, Kinesis, DynamoDB Streams)
✅ VPC Lambda deployment patterns
⏱️ TIMESTAMPS:
00:00 Welcome
01:23 Must-Know Lambda Service Quotas
02:41 Performance Tuning: Memory/CPU Scaling + Lambda Power Tuning
03:41 Concurrency Deep Dive: Reserved vs Provisioned
04:17 Speed Best Practices: Connection Reuse & Client Initialization
04:50 Invocation Modes & Error Handling: Sync vs Async Retries, DLQs, Destinations
07:20 Polling Event Sources: SQS vs Streams (Kinesis/DynamoDB) Retry Behavior
07:59 Exam-Style Scenario Walkthrough: S3 → Lambda Failures & DLQ Answer
08:35 What to Memorize + Hands-On Labs to Do Before the Exam
09:42 Wrap-Up + Next Video (Practice Questions)
🔑 KEY FACTS TO MEMORIZE:
Function timeout: 900 seconds (15 minutes) - NOT adjustable
Memory range: 128 MB - 10,240 MB
Maximum layers: 5 per function
Async retries: 2 automatic retries (3 total attempts)
DLQ options: SQS queue or SNS topic only
Destinations: SQS, SNS, Lambda, or EventBridge (success AND failure)
CPU scales with memory (more memory = more CPU)
💡 EXAM TIPS:
Lambda is heavily tested on DVA-C02 (Domain 1, Task 2)
Focus on error handling patterns (DLQ vs Destinations)
Understand invocation types: synchronous, asynchronous, and polling
Know when to use provisioned concurrency vs reserved concurrency
Practice VPC Lambda configurations with RDS access
📚 HANDS-ON PRACTICE:
Before the exam, actually BUILD these:
1. Deploy Lambda with AWS SAM or CDK
2. Create VPC Lambda that accesses RDS database
3. Set up S3 → Lambda → DynamoDB pipeline
4. Configure Dead Letter Queue for error handling
5. Build a simple serverless API
📖 AWS RESOURCES:
Lambda Developer Guide: https://docs.aws.amazon.com/lambda/la...
DVA-C02 Exam Guide: https://aws.amazon.com/certification/...
Lambda Service Quotas: https://docs.aws.amazon.com/lambda/la...
Lambda Power Tuning Tool: https://github.com/alexcasalboni/aws-...
🎓 AWS DEVELOPER ASSOCIATE EXAM SERIES:
This is Episode 4 of my AWS Developer Associate Exam Mastery Series. Check out the playlist for complete exam preparation coverage including S3, DynamoDB, API Gateway, CloudFormation, and more!
📺 NEXT VIDEO: Practice Exam Questions Walkthrough
Coming soon - real DVA-C02 exam-style questions with detailed explanations!
👍 If this video helped you prepare for the AWS Developer Associate exam, please like and subscribe for more exam prep content!
💬 QUESTIONS? Drop them in the comments below!
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