Schemas & Schema Registry in AWS Serverless

1. Introduction

In the AWS serverless ecosystem, managing data schemas becomes crucial for ensuring data integrity and compatibility, especially when using services like Amazon EventBridge. AWS Schema Registry allows you to manage schemas for event data in a centralized manner, making it easier to enforce data contracts.

2. What is Schema Registry?

AWS Schema Registry is a feature of Amazon EventBridge that allows you to create and manage schemas for your events. It helps in:

• Defining the structure of event data.
• Enforcing data validation and compatibility.
• Enabling schema discovery and versioning.

3. Key Concepts

4. Setting Up Schema Registry

Follow these steps to set up a Schema Registry in AWS:

1. Log in to the AWS Management Console

2. Navigate to Amazon EventBridge

3. Select "Schema Registry" from the sidebar

4. Create a new schema

   Ensure to define the schema accurately using JSON or Avro format.

   {
       "type": "record",
       "name": "User",
       "fields": [
           {"name": "id", "type": "int"},
           {"name": "name", "type": "string"}
       ]
   }

5. Publish the schema

6. Validate events against the schema

5. Best Practices

• Version your schemas to handle changes without breaking existing consumers.
• Use schema evolution techniques to maintain backward and forward compatibility.
• Document all schemas and their changes for better collaboration among teams.

6. FAQ