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Working with AWS AppSync Events: Serverless WebSockets for Pub/Sub

Front-End Web & Mobile Blog

This article introduces AWS AppSync Events, a serverless WebSocket Pub/Sub service for creating real-time applications without GraphQL dependencies. The author demonstrates building a leaderboard application using AWS Amplify Gen 2 and AWS CDK.

  • Create an event API using CDK L1 constructs with API key authorization
  • Set up a real-time leaderboard application with event publishing and subscribing
  • Use Amplify to simplify connecting, publishing, and subscribing to events
  • Demonstrate publishing random player scores to a default channel
  • Support high-throughput applications like gaming and live auctions

The tutorial highlights AWS AppSync Events' simplicity and scalability, offering 250,000 free real-time event API operations per month for developers to explore.

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