Building a real-time serverless app in Blazor using AWS

on YouTube ↗01h 01m

" summary

Builds an interactive dashboard that updates live by wiring Blazor WebAssembly to a serverless .NET backend, replacing a SignalR+Redis backplane with Amazon API Gateway WebSockets. Connection IDs go into Lambda + DynamoDB on connect/disconnect; a Lambda scans IDs and posts to each connection URL to broadcast votes and slide changes. Claims much lower cost because API Gateway maintains sockets and Lambda charges per invocation; demo implements voting and slide-sync successfully and the code is on GitHub.

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" chapters (11)

1. 0:00Start
2. 4:49Hotel Booking
3. 5:59Document Collaboration
4. 8:04Web Sockets - Negotiate
5. 16:04Publish to Amazon Elastic Beanstalk
6. 21:04Programming Model
7. 21:50Connecting to the API
8. 25:07Client to Server Messaging
9. 25:54Connection URL Options
10. 26:21Choose the protocol
11. 29:53Realtime Chat

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