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Lazar Nikolov

Lazar Nikolov

Lazar Nikolov is a full-stack developer with a passion for creating dynamic and scalable web applications. With experience across both frontend and backend technologies, Lazar enjoys digging into everything from React and JavaScript to server-side development. As a dedicated educator, Lazar shares insights and knowledge through YouTube tutorials, online courses, and his own Discord server at creatures.sh.
Sentry, Canadanikolovlazar.comNikolovLazarnikolovlazar
Tracing: Frontend Issues With Backend Solutions
React Summit US 2024React Summit US 2024
Nov 14, 17:00
Tracing: Frontend Issues With Backend Solutions
WorkshopPublic
Frontend issues that affect your users are often triggered by backend problems. In this workshop, you’ll learn how to identify issues causing slow web pages and poor Core Web Vitals using tracing.
Then, try it for yourself by setting up Sentry in a ready-made Next.js project to discover performance issues including slow database queries in an interactive pair-programming session.
You’ll leave the workshop being able to:- Find backend issues that might be slowing down your frontend apps- Setup tracing with Sentry in a Next.js project- Debug and fix poor performance issues using tracing
This will be a live 2-hour event where you’ll have the opportunity to code along with us and ask us questions.
Register
next.jsdebug
Deconstructing Distributed Tracing
React Day Berlin 2023React Day Berlin 2023
8 min
Deconstructing Distributed Tracing
Watch video: Deconstructing Distributed Tracing
Distributed tracing is a powerful technique that allows you to track the flow and timing of requests as they navigate through a system. By linking operations and requests between multiple services, distributed tracing provides valuable insights into app performance and helps identify bottlenecks. In this talk Lazar will explain the concept of Distributed Tracing by walking you through how monitoring tools build tracing solutions.
performanceopentelemetry react
Monitoring 101 for React Developers
React Summit US 2023React Summit US 2023
107 min
Monitoring 101 for React Developers
Top Content
WorkshopFree
If finding errors in your frontend project is like searching for a needle in a code haystack, then Sentry error monitoring can be your metal detector. Learn the basics of error monitoring with Sentry. Whether you are running a React, Angular, Vue, or just “vanilla” JavaScript, see how Sentry can help you find the who, what, when and where behind errors in your frontend project. 
Workshop level: Intermediate
reacttestingangularvue
Monitoring 101 for React Developers
React Advanced Conference 2023React Advanced Conference 2023
112 min
Monitoring 101 for React Developers
Top Content
WorkshopFree
If finding errors in your frontend project is like searching for a needle in a code haystack, then Sentry error monitoring can be your metal detector. Learn the basics of error monitoring with Sentry. Whether you are running a React, Angular, Vue, or just “vanilla” JavaScript, see how Sentry can help you find the who, what, when and where behind errors in your frontend project.
error monitoring
Maximize App Performance by Optimizing Web Fonts
Vue.js London 2023Vue.js London 2023
49 min
Maximize App Performance by Optimizing Web Fonts
WorkshopFree
You've just landed on a web page and you try to click a certain element, but just before you do, an ad loads on top of it and you end up clicking that thing instead.
That…that’s a layout shift. Everyone, developers and users alike, know that layout shifts are bad. And the later they happen, the more disruptive they are to users. In this workshop we're going to look into how web fonts cause layout shifts and explore a few strategies of loading web fonts without causing big layout shifts.
Table of Contents:What’s CLS and how it’s calculated?How fonts can cause CLS?Font loading strategies for minimizing CLSRecap and conclusion
performanceoptimization