# Serverless Django REST APIs
# What is Serverless?
Pay not for the time, BUT for number of API invokations
diff b/w amazon API gateway and Lambda Function
API Gateway provides tools for creating and documenting web APIs that route HTTP requests to Lambda functions.
Explicitly define Methods and Resources
Can write AWS Lambda functions in Python and then map them to API gateway resources with methods
# How to create and deploy lambda functions to cloud services?
- Terraform - (core, state, config), (refresh, plan, apply, destroy)
- Serverless
- Cloud Formation
Automate and manage Infrastructure on multiple cloud services decleratively.
- Replicating environments (development, canaray, staging, production)
What the difference b/w ansible and terrraform?
- Infrastructure as a code
- Ansible is mainly Configuration Tool
# AWS Lambda Function
- Do you want to pass the headers from API Gateway to lambda functions?
- How to link lambda function with API gateway?
- Public or private APIs?
- IAM to give lambda function permission to access S3 bucket (using as database)
- Can I test AWS lambda functions locally?
- ARN is provided in IAM to restrict/allow the resource access
- Amazon Systems Manager to store secrets
- How to secure API Endpoint? Public to restricted => use AWS Cognito
- How to bundle external python librarires in lambda like requests? Zip them together and then upload
# Questions
- Can I write a django in lambda?