To demonstrate an event-driven, serverless architecture, we will build, package, and deploy an application capable of extracting messages from CSV files placed in S3, transforming those messages, queueing them to SQS, and finally, writing the messages to DynamoDB, using Lambda functions throughout. If you’re paying for it but not using it, it’s not serverless. Remember, if you’re paying for it but not using it, it’s not serverless. This is not always true of ‘serverless’ offerings on other leading Cloud platforms. With serverless on AWS, you pay for consistent throughput or execution duration rather than by server unit, and, at least on AWS, you don’t pay for idle resources. So, what is ‘ serverless’? According to AWS, “ Serverless applications don’t require provisioning, maintaining, and administering servers for backend components such as compute, databases, storage, stream processing, message queueing, and more.”Īs a Developer, one of my favorite features of serverless is the cost, or lack thereof. When it comes to functions on AWS, Lambda is just one of many fully-managed services that make up the AWS Serverless Computing platform. Mistakingly, many of us think of serverless as just functions (aka Function-as-a-Service or FaaS). All interactions between application components in this post will be as a direct result of triggering an event. This architectural pattern can make services more reusable, interoperable, and scalable.” This description of an event-driven architecture perfectly captures the essence of the following post.
AWS SAM LOCAL DYNAMODB TESTING SOFTWARE
What is ‘Event-Driven’?Īccording to Otavio Ferreira, Manager, Amazon SNS, and James Hood, Senior Software Development Engineer, in their AWS Compute Blog, Enriching Event-Driven Architectures with AWS Event Fork Pipelines, “ Many customers are choosing to build event-driven applications in which subscriber services automatically perform work in response to events triggered by publisher services. The result will be an application composed of small, easily deployable, loosely coupled, independently scalable, serverless components. To demonstrate this architecture, we will integrate several fully-managed services, all part of the AWS Serverless Computing platform, including Lambda, API Gateway, SQS, S3, and DynamoDB. In this post, we will explore modern application development using an event-driven, serverless architecture on AWS.
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