Cloud Sovereignty & Platforms LambdaAWSS3API GatewayDynamoDBServerless ·
Serverless and Lambda
AWS Cloud Development Kit (AWS CDK)
If you’ve just landed here, we’re doing a “Become a Cloud Architect” Unicorn Workshop by building a Unicorn Pursuit Web App step by step, and you’re more then welcome to join!
About Serverless
Basically, the evolution started from Data Center, and then evolved into:
- IaaS
- PaaS
- Containers
- Serverless!!! Hello Lambdas!
Why is Serverless so popular?
- No servers or databases to operate.
- So much cheaper.
- Super elastic / scalable.
Lambda
Fully managed compute platform, where we can run our Code without managing Servers. Lambda is EVENT driven, and charged based on how long your code runs.
Cool: First MILLION requests are FREE, and 0.2 dollars per million requests starting from there.
You can run Lambda:
- As RESPONSE to EVENTS that trigger the execution. A trigger can be a change to S3 or DynamoDB data.
- As compute service to run your code as response to HTTP requests, using API Gateway, or API calls using AWS SDK.
Important:
- Lambda scales OUT.
- Lambdas can trigger other Lambdas.
- X-Ray is used to DEBUG Lambda. You can use Lambda across Regions.
Step Functions
- Great way to visualize a serverless app
- Automatically triggers and tracks each step
- Logs each step, for later troubleshooting
X-Ray
Collects data about requests your app serves. You can see detail info about everything your app is calling from other services.
X-Ray SDK provides:
- Inceptors, to add to your code
- Client Handlers, to instrument AWS SDK clients your app uses to call other AWS services.
- An HTTP client to use for other calls to internal and external HTTP services.