Serverless Chat Application
Built a serverless chat application using AWS Lambda, DynamoDB, API Gateway, S3, Cognito and CloudFront
Here’s an overview of building a serverless chat application using AWS services:
- Used AWS Lambda to write the chat application’s server-side logic in a stateless manner sothat each function can run independently, without relying on any specific runtime environment.
- Used DynamoDB, a NoSQL database service, to store chat messages and other data for the chat application.
- Used API Gateway to expose the chat application’s backend logic to the client-side frontend code. API Gateway acted as a reverse proxy, converting incoming HTTP requests into AWS Lambda function invocations and returning the results to the client.
- Used Amazon S3 to store the chat application’s frontend codes (HTML, CSS, and JavaScript files).
- Used Amazon Cognito to authenticate users and manage their access to the chat application. Cognito integrates well with Lambda and API Gateway to control access to the chat application’s backend logic.
- Used CloudFront to distribute the chat application’s frontend code to users around the world. CloudFront provides fast and secure delivery of the frontend code from S3 to the user’s device, improving the chat application’s performance.
- last was connecting the different AWS services: Created an API in API Gateway that invokes a Lambda function, which in turn accesses data stored in DynamoDB. Next was configuring Cognito to authenticate users and provide them with the necessary access to the chat application’s backend logic.