ReadingNotes

AWS: API, Dynamo and Lambda

What are serverless functions?
- - serverless computing refers to not needing to maintain your own servers to run these functions.
If you were to create a system that emulated Lambda functions, how would you do it?
- Lambda function runs in its own container.
- The entire infrastructure layer of AWS Lambda is managed by AWS.
- since the service is fully managed, using AWS Lambda can save you time on operational tasks.
Describe how a CDN works
- CDN stores a cached version of its content in multiple geographical locations (a.k.a., points of presence, or PoPs). Each PoP contains a number of caching servers responsible for content delivery to visitors within its proximity.

serverless computing refers to not needing to maintain your own servers to run these functions.

allows you to save data and files in an off-site location that you access either through the public internet or a dedicated private network connection.

is a highly-distributed platform of servers that helps minimize delays in loading web page content by reducing the physical distance between the server and the user.

is a managed service that allows developers to define the HTTP endpoints of a REST API or a WebSocket API and connect those endpoints with the corresponding backend business logic.
handles authentication, access control, monitoring, and tracing of API requests.
replaces the API servers with a managed serverless solution.
API Gateway sits between the backend services of your API and your API’s users, handling the HTTP requests to your API endpoints and routing them to the correct backends.

API Gateway integrates with many other AWS services like AWS Lambda, AWS SNS, AWS IAM, and Cognito Identity Pools.

is a key-value and document database that delivers single-digit millisecond performance at any scale.
It’s a fully managed, multi-region, multi-active, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications.