Add Chat AI Summary Using Amazon Bedrock and HTTP Response Streaming

Ever since I started writing what turned out to be a series of articles on how to build real-time chat apps natively on AWS, I had a huge backlog of ideas for extending the basic chat, which included adding authentication & authorization, full-text search, threads, reactions, and many other things that make any chat system production grade and up to par with what users expect these days. Given how AI has entered every pore of the industry, extending my small chat project had to go in this direction sooner or later. It all started with creating a solution that (ab)uses IoT Core, which worked exceptionally well - maybe even too well, as AWS ended up designing AppSync Events in a similar fashion. Read more on what I mean in my blog post about Serverless Chat on AWS with AppSync Events. Shortly after the initial release, AWS pushed out the promised improvements for AppSync Events, which I explore in the following blog post about leveraging WebSockets with it. To build on top of existin