📅 Day 20 | AWS Lambda — Serverless Compute in AWS ⚡☁️
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📅 Day 20 | AWS Lambda — Serverless Compute in AWS ⚡☁️
AWS Lambda is a serverless compute service that allows developers to run code without provisioning or managing servers. Lambda automatically handles infrastructure, scaling, and availability, with billing based solely on execution time.
This abstraction contrasts with traditional cloud VMs where developers are responsible for OS patching, capacity planning, and scaling rules, adding significant operational overhead. Properly managing these VMs, even with automation, introduces potential failure points, and associated costs.
Key Insights
- AWS Lambda supports Python, Node.js, Java, Go, and C#: 2025
- Event-driven architecture is enabled through triggers such as S3 uploads, API Gateway requests, and SNS notifications: 2025
- Lambda integrates with CI/CD pipelines for automated deployments, streamlining DevOps workflows: 2025
Practical Applications
- Serverless APIs: Companies like Netflix use Lambda for backend API processing.
- Image resizing & file processing: Automatically transforms images upon upload to S3.
- Pitfall: Cold starts can introduce latency; provisioned concurrency mitigates this but increases cost.
References:
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