A simple application to build a near real-time notifier using AWS services; SQS, SNS, and DynamoDB. This application is designed to send notifications/messages to various subscribed endpoints in ~1sec, ensuring notifications are processed and delivered instantly with minimal latency.

• Near Real-Time Notifications: Delivers messages to endpoints almost instantaneously.
• AWS Integration: Utilizes AWS SQS for message queuing, SNS for message distribution, and DynamoDB for storage.
• Scalable: Designed to handle a large number of notifications with minimal latency.
• Reliable: Ensures messages are reliably processed and delivered to the subscribers.

Before you start, ensure you have the following:

• AWS credentials configured locally in ~/.aws directory.
• AWS resources provisioned(SQS, SNS & DYNAMODB)
• Docker & installed on your machine.

To run the application you can do that by using docker compose docker-compose up --build. It starts up 2 services, the FastAPI app and the consumer as seen below.

You can create users in DynamoDB and also list users from DynamoDB.

Go ahead to test it by sending a message as seen below.

Then you can see the message(s) deliverd instantly to the subcribed endpoints.

• To run the container, bind it to your local AWS configuration directory. This allows the container to access your AWS credentials. e.g docker run --rm -v ~/.aws:/root/.aws.

• The terraform files for the required AWS resources are avaliabe in aws_reources directory. You can provision the resources using Terraform or via the console.