Serverless Tcl with AWS Lambda

Cyan Ogilvie
Ruby Lane, Inc.
cyan@rubylane.com

What is "Serverless"?

Providing services over the Internet has traditionally involved many infrastructure concerns:
- Servers, networks, firewalls, load balancers, operating systems
- Designing and provisioning for scale
- High-availability
- Deployment (without downtime)
- Monitoring and alerting
- Patching and updates to infrastructure
- Backups
- Access control

Serverless is a buzzword for making these somebody else's problems

Managing Lambda: Layers

Managing Lambda: Handler Function

Managing Lambda: Memory

Managing Lambda: Metrics

Managing Lambda: Logs

Anatomy of a Pure Serverless Application

Load Balancer configured with a free certificate (auto-renew)
Path handlers map some urls to some set of Lambda functions
Path handlers map static resources to S3
API Gateway with endpoints mapping to Lambda functions to expose a JSON REST API for your service
Cognito for user authentication with federated support (Google, Facebook, etc)
DynamoDB / Aurora serverless for structured data

Cost: ~ $17 / month

Status: Production ready

Ruby Lane lambdas:
- 1.2 million invocations / month
- 740k billed GiB seconds / month
~ $6 / month

Availability

Open Source
Will be published soon to Ruby Lane's github page:
https://github.com/RubyLane