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Ecod Services sells cleaning supplies and often sees spikes in demand for their website, necessitating the need for a decoupled serverless architecture that can easily scale in and out as demand changes.

The above architectural diagram shows the flow for a well decoupled serverless backend solution hosted on AWS.

In this architecture, we use a REST API to place a database entry in the Amazon SQS queue. Amazon SQS will then invoke the first Lambda function, which inserts the entry into a DynamoDB table. After that, DynamoDB Streams will capture a record of the new entry in a database and invoke a second Lambda function. The function will pass the database entry to Amazon SNS. After Amazon SNS processes the new record, it will send you a notification through a specified email address.

• AWS APIGateway
• AWS SQS
• AWS Lambda
• AWS DynamoDB
• AWS SNS
• AWS IAM

MIT

Russell Nyorere