I am a big fan of leet code so when we decided to have a code challenge in our team I thought it wouldn’t be a bad idea to build one which should include pretty basic functionalities like:

• Ability to register and sign in to the application
• Present the problem (questions)
• Provide an interface for the end-users to write, compile and execute code.

Overall, it was an amazing learning experience and I am happy to walk through how I did it.

Guidelines

Before I start working on this I decided to come up with some guidelines so I don’t over-engineer this and end up building a Frankenstein out of it, here are few of those guidelines:

• The whole system should be implemented in 3 to 4 days
• Reuse as much as you can when it comes to technology or service. DON’T build anything new unless until it doesn’t exist
• ZERO standing cost for the infrastructure. Pay ONLY for what you use and pay as MINIMAL you can

Technologies & Runtime Services

• Bootstrap + JQuery (UI)
• AWS Lambda
• AWS API Gateway
• AWS Dynamodb
• AWS Dynamodb streams
• AWS Simple email service (SES)
• AWS S3 (For static site hosting)

#aws #code-challenge #serverless-computing #serverless #dynamodb #compiler #aws-lambda #leetcode