Going Real Time Using Azure CosmosDB and React, by Olena Borzenko

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Published May 14, 2021

Traditionally, when building SPA applications it feels a lot like we are looking at the moon. On the light side, we have the shiny and pretty UI, which everyone knows and loves. On the dark side, there is the complicated server-side logic behind the scenes we need to manage.

Luckily, there has been much progress towards making our lives as developers a bit easier. This is done by allowing us to concentrate on writing code, instead of causing us headaches from all the aspects around hosting, deployment, and management.

In this demo-rich session, we are going to build a real-time stock monitoring system using a serverless React App backed by the power of various Azure features. You will learn how to process documents from Azure Cosmos DB Change Feed, and then broadcast this newly received data to our client, all by using out-of-the-box Azure Functions bindings for Cosmos DB and SignalR.

0:00 - Introduction
1:28 - Warehouse system background
6:50 - Stock monitoring with Azure Functions and CosmosDB
16:56 - less code with functions
21:00 - Real-time with SignalR and React
24:24 - MobX-state-tree
36:46 - Summary
38:00 - Q&A

Speaker: Olena Borzenko, Senior Backend Engineer, Durstexpress

Olena is a senior backend engineer at Durstexpress from Berlin in Germany.
She has previously worked in a service company based in Ukraine and took a part in the creation of various products from small startups and B2B applications to enterprise platforms.
She is passionate about new technologies, clean code, and best practices.
In her free time, when she’s not spending it on hobbies, she likes to build demos around real-life use cases, share knowledge with others, and learn about the experience of others.

Twitter: https://twitter.com/borzenko_lena

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