Lazar Nikolov
@NikolovLazar
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Girl dad. DevEx Engineer @getsentry.
Toronto, Canada 🇨🇦
Joined December 2012
Yet another reason why you should get familiarized with tracing as a software engineer.
I've been banging the tracing drum for almost 3 years now (since joining Sentry). It's THE way to debug apps in production.
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I'm using Spotlight MCP and Claude Code to figure out why a certain page of my app is slow. This is peak AI debugging.
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Skills are live on Sentry's MCP. This restrict toolsets and focuses on exposing workflows that you understand and desire. The experiments shall continue until morale improves!
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I've been banging the tracing drum for almost 3 years now (since joining Sentry). It's THE way to debug apps in production.
Sentry's tracing product is legit useful now - its taken us a while, and there's still much opportunity to improve it, but its amazing when you need to work through a problem. I was using it to diagnose why we're seeing a massive influx of traffic on our MCP service...
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PARENTS: please check your kids candy this halloween - I just found another hydration error: Text content does not match server-rendered HTML inside this snickers bar
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hopefully the noise from Toronto winning the world series will calm down by March, come hang!
🚀Meet @sergedottech at the first React conference in Canada! 💻Developer Experience Engineer at @getsentry 🎉Organizer of React Toronto community 🛠️Tinkerer & tech enthusiast 📌Program committee member Catch him on March 24 & 26: https://t.co/n2OFz2SGIB
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One thing I like about @getsentry's AI code reviewer is when it finds a bug – it treats it as a "potential" bug. AFAIK they're the only code review tool that prompts your coding agent to double check before applying a fix.
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I have a single friend in his late 30s right now. Mega-millionaire. Doing whatever he wants. He's happy! He always asks me "where are you going next" and I always respond "nowhere, I just want to be home with my kid." And he looks at me like I'm CRAZY. He tries to empathize, but
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this one's so cool I'll go back to wearing hats all the time
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Friendly reminder that if you want to see how you can capture errors and measure performance in production in your React Native app, you should register for the free workshop I'm putting together on October 30th!
let him cook 👨🍳 Join @NikolovLazar on Oct 30 to learn how to connect the dots between slowdowns, crashes, and the user experience in your React Native app. RSVP in next post
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Debugging is changing
This is a VERY good week of cool things in @getsentry, for example... I could sit here and teach you how to read the trace waterfall... OR... You we can just ask Seer 🤷♀️🤖 Coming soon. Seer is a lot more than just "fix this issue and give me a PR" - it's agent for debugging.
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Will is the type of person that when you meet him for the first time, it feels like you’ve already been friends for years
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Every meal planning app whenever I go on a diet 😭 btw you should join my workshop on the 30th this month. We'll talk React Native, AI, crashes, performance optimization, and @getsentry.
let him cook 👨🍳 Join @NikolovLazar on Oct 30 to learn how to connect the dots between slowdowns, crashes, and the user experience in your React Native app. RSVP in next post
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To put the AWS outage in perspective, Sentry's monitoring showed a ~2,000% increase in sites down today compared with yesterday. Did we mention we have an uptime monitoring product?
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Congrats you two! Enjoy the rest of your lives together 💖
oh, and I got married to my best friend, highly recommend it. back to work
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Join our upcoming workshop with @NikolovLazar on Oct 30! We can't promise it'll be spooky, but we can promise it'll be a good time 👻 RSVP in the next post
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A year ago, @getsenry launched the Open Source Pledge, with one singular goal: get maintainers paid. A key pillar of @thePledge is it’s not a “pledge”, like an IOU. Rather, to join the Pledge, members come with receipts. Here’s why. 🧵
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