JavaScript Israel

This upcoming meetup is about interesting front-end performance issues and what are the strategies to solve them.

Mark your calendars!

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SCHEDULE

18:00 - Drink, eat and mingle 😃
(It's on the 32nd floor of the North building)

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18:30 - 19:10
Stop Shooting Yourself in The Foot: Quick Wins to Improve Your React App’s Performance
Opher Vishnia

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19:15 - 19:45
Writing Efficient and High-Performance JS Code
Naveh Sadeh

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19:45 - 19:55
The Proxy Zipper - Esoteric Patterns for Practical Performance
Nik Frank

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19:55 - 20:25
Runtime Performance Optimization in Production
Keren Kenzi and Yonatan Kra

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20:25
Raffle!

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Stop Shooting Yourself in The Foot: Quick Wins to Improve Your React App’s Performance
(Opher Vishnia)

Your React app is slow, and, yes, it’s kind of your fault.
But don’t worry—you didn’t sabotage it all at once.
It happened slowly, over time, without you even realizing.

The good news is you’re not alone.
React is riddled with common performance pitfalls that developers unknowingly create.
From over-rendering components to sneaky state updates that wreak havoc—these issues are easy to overlook if you don’t know what to look for.

In this session, you’ll learn how to spot these problems with the right tools and methodologies. Whether you’re an experienced developer or just getting started with React, you’ll walk away with practical techniques to stop sabotaging your app’s performance—and maybe even your sanity.

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Opher Vishnia, a multidisciplinary creator, with two decades of expertise spanning web development, design, music, and game development.
He currently leads development as principal engineer at Hud.io, imbuing magic into the field of development tools and observability. Previously, as a principal developer at Eko, Opher worked at the intersection of art and technology, collaborating with development teams as well as design, art, and film-making teams to redefine interactive media on the web.
His notable work includes open-source projects like react-animation-orchestrator, Lance JS multiplayer server, and the VR film Broken Night, which was showcased at the Cannes Film Festival and Tribeca Film Festival in NYC.

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Writing Efficient and High-Performance JS Code
(Naveh Sadeh)

Learn practical techniques to boost your JavaScript's performance.
This talk will focus on actionable tools and insights to make your code faster, more efficient, and better optimized for real-world challenges, along with clear and engaging demonstrations showcasing the impact of these improvements on code execution times.

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Naveh Sadeh, a Full Stack Team Lead at Harmonya.

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The Proxy Zipper - Esoteric Patterns for Practical Performance
(Nik Frank)

We were all very excited when proxies landed - I can finally make a workaround for that one library.

But for performance issues?

Let's take a look at a real-world pattern for huge performance gains while zipping together two streams using a proxy.

Nik Frank, a long time JS-il attendee, speaker, community member - and a true believer in the language.

He is now living in Jerusalem working at Mobileye.

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Runtime Performance Optimization in Production
(Yonatan Kra)

What do the event loop, rendering, and memory allocation in JavaScript have in common? Job Security!
In this talk, we’ll trace the path your application takes—from JavaScript code and CSS styles to the final pixels rendered on the user’s screen. Along the way, we’ll dive into real-world examples of solving performance issues in production, uncovering insights you can immediately apply to your own projects.
Whether you're optimizing critical workflows or addressing subtle slowdowns, this session will provide practical insights to enhance your app's runtime performance.

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Yonatan Kra, has been involved in some awesome projects in the academy and the industry - from C/C++ through Matlab to PHP and javascript.
Former CTO at Webiks and Software Architect at WalkMe.
Currently, he is a software architect at Vonage and an egghead instructor.

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