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How Taranis Managed To Improve a Legacy Web Application by 10X (And Lived To Tell the Tale)

No matter how far technology progress gets, there will always be performance issues. Why? Because humanity will continue to outsize demand over supply. We always want more and we want it fast.

I want to tell you a story of how our company, that serves farmers and growers across millions of acres, has come to a point where the web app just couldn't handle the amount of acres covered. And over a course of four sprints we were able to cut the response time from around 3-4 minutes (!!) to 3-4 seconds.

This story will take the audience through JavaScript hidden speed tricks, React rendering optimization, HTTP best practices for performance and how to detect all that in a production environment!


  • Audience should have familiarity with JavaScript, basic React, HTTP


  • How to detect performance issues in production
  • How to plan for a performance fixing period (sprint)
  • Tips and tricks for performance optimizations for each layer (client, server and network)



Ori Harel
Ori Harel is a director of engineering at a company called Taranis, managing multiple teams mixed with frontend and backend developers. Throughout his (more than 17 years) career his main focus has been frontend development across many platforms such as web, mobile and more.






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