Lazar Nikolov's Avatar

Lazar Nikolov

@nikolovlazar.com

Software Engineer & Educator. Works @sentry.io. Check out my YouTube: youtube.com/@nikolovlazar. Join my Discord creatures.sh.

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08.05.2023
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Latest posts by Lazar Nikolov @nikolovlazar.com

I'm throwing an MCP meetup / mini-hack-thingy next week in Toronto. Free entry, free food, free mind-blowage. Come on by, and grab your laptop!

17.06.2025 15:56 πŸ‘ 7 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Toronto AI Agent HackNight with MCP ft. Codename Goose & Sentry Β· Luma MCP is rapidly changing the landscape of what's possible for developer tools while broadly, AI is changing the way we work. Let's explore this together! Join…

Calling all Canada Geese πŸ‡¨πŸ‡¦

We’re flying into Toronto for Tech Week.
Come learn how folks are building with Model Context Protocol and hack alongside Goose, a local-first, open source AI agent.

In collaboration with @sentry.io

Save your spot: lu.ma/ruit2le5

11.06.2025 16:30 πŸ‘ 10 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
Debugging Errors in Background Jobs
Debugging Errors in Background Jobs YouTube video by Sentry

@nikolovlazar.com shows us how to debug these errors anywayβ€”piecing together the missing context across systems so you can actually fix the problem instead of just guessing.

Curious? Check out the video to see how we make it a bit less painful youtu.be/wb4Km8pCZRY

29.05.2025 19:05 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Monitoring Critical Experiences
Monitoring Critical Experiences YouTube video by Sentry

Today, @nikolovlazar.com shows you how to use custom attributes to trace the end-to-end workflows you care about.

Check it πŸ‘‡ www.youtube.com/watch?v=PooH...

22.05.2025 13:36 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Monitoring Slow Database Queries
Monitoring Slow Database Queries YouTube video by Sentry

Remember when that SELECT * felt reasonable?

Watch @nikolovlazar.com show you how to track down rogue DB queries quietly dragging down your response times in our this month's first Breakpoint episode.

youtu.be/m9veTPLYqBM

15.04.2025 18:30 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1
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Instrument, monitor, fix: a hands-on debugging session Join Lazar for a hands-on session where you’ll build it, watch it break, debug it, and go from β€œno idea what’s wrong” to fixing issuesβ€”all in one go.

@nikolovlazar.com will be hosting a live workshop on Wednesday the 12th at 9 AM PT. Think of it as a "build it live" event so bring your computer and questions.

sentry.io/resources/in...

10.03.2025 21:19 πŸ‘ 5 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Got my video featured in this week’s WebPerformance Report!

02.03.2025 13:13 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

It was great working with you Salma! I’m going to miss your energy and our brainstorming sessions. I don’t know if the new company realizes how lucky they are to get you 😁 let’s touch base in a few months!

28.02.2025 12:56 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Next.js-like routing in TanStack Start
Next.js-like routing in TanStack Start YouTube video by Lazar Nikolov

Hear me out... Next.js routing, but in TanStack Start 🀯

www.youtube.com/watch?v=X7W8...

05.02.2025 23:50 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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TanStack Start Trivia App YouTube video by Lazar Nikolov

hey friends! I’m live working on my full stack TanStack Start app. Let’s hang out! youtube.com/live/ctIiE60...

05.02.2025 14:02 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yes πŸ˜‚

03.02.2025 13:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Just finished @aaronfrancis.com’s screencasting.com and it inspired me to change up my setup for the millionth time. Also, I wish this course existed years ago. I’ve had to learn most of the things Aaron teach by trial an error, but also learned a few new things. screencasting.com is worth it!

02.02.2025 18:54 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Breakpoint - Fundamentals of Software Architecture + CodeCrafters.io Redis YouTube video by Lazar Nikolov

Going live! We’ve got Chapter 3 of Fundamentals of Software Architecture today and we’ll continue building our own Redis in TypeScript. Jump in! youtube.com/live/xnEl84v...

22.01.2025 14:01 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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TanStack Start Trivia App YouTube video by Lazar Nikolov

I’m starting a new app - trivia app built with TanStack Router, Supabase, and shadcn/ui. This trivia app is going to be used by attendees of in-person meetups. Let’s hang! youtube.com/live/AJSerCS...

20.01.2025 14:03 πŸ‘ 7 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Just published the Chapter 2 summary - "Architectural Thinking". We define what "architectural thinking" means, Architecture vs Design, the importance of having a technical breadth, analyzing trade-offs, and understanding business drivers.

youtu.be/zMfc58hHwA4

15.01.2025 17:52 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Breakpoint - Fundamentals of Software Architecture + CodeCrafters.io Redis
Breakpoint - Fundamentals of Software Architecture + CodeCrafters.io Redis YouTube video by Lazar Nikolov

Continuing with Chapter 2 - Architectural Thinking of β€œFundamentals of Software Architecture”, and then continuing with codecrafters.io. Let’s hang out! youtu.be/3KDNIPYCSo8

15.01.2025 14:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Chapter 1: Fundamentals of Software Architecture | Book Club
Chapter 1: Fundamentals of Software Architecture | Book Club YouTube video by Lazar Nikolov

I'm starting a Book Club! Every Wednesday at 9 AM EST on my YouTube channel me and my community are going to summarize engineering books, starting with "Fundamentals of Software Architecture" by Mark Richards and Neil Ford. See you next Wednesday!

youtu.be/WXIuQQGrUsQ

08.01.2025 22:56 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
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Works.

30.12.2024 12:59 πŸ‘ 97 πŸ” 15 πŸ’¬ 4 πŸ“Œ 2
Goodbye kitty 😿 Configuring WezTerm from scratch!
Goodbye kitty 😿 Configuring WezTerm from scratch! YouTube video by Lazar Nikolov

Kitty's update broke my font config, so I decided to switch over to WezTerm πŸ˜…

youtu.be/l5c5ucQvKOA

24.12.2024 14:01 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
E11: Building AI-powered Resume App
E11: Building AI-powered Resume App YouTube video by Lazar Nikolov

Python / DDD Live on YouTube. Let's hang out! youtu.be/p_qMfSlxKUI

20.12.2024 15:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Introducing New Streaming Program "Breakpoint"
Introducing New Streaming Program "Breakpoint" YouTube video by Lazar Nikolov

Introducing "Breakpoint" - my new streaming program. Live right now. Jump in! youtu.be/-yFPbMlksBM

18.12.2024 14:02 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I figured it out! One day (Wednesdays) we’ll do other activities like code reviews, read books and articles, explore libraries, design patterns… I’ll be introducing the new program tomorrow at 9 AM EST. It’s going to be exciting!

18.12.2024 01:37 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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I just posted this in my Discord creatures.sh. I'm thinking of diversifying my live streams - one day a week where we continue building projects, and another day where we check out links, explore libraries, read books! LMK what you think of this idea, and which book we should start with.

17.12.2024 01:19 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
E10: Building AI-powered Resume App
E10: Building AI-powered Resume App YouTube video by Lazar Nikolov

DDD / Python / Let's go! youtu.be/hS1OMYpjssc

16.12.2024 14:12 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Curious to hear all your ideas. Let’s take the live streams to the next level!

Thank you all πŸ’–

14.12.2024 22:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Do you think we’ll produce more value if each episode was something different? We could learn something new every episode, and the topics can be sourced by the community. You’ll post links in my Discord server (we’ll create a forum) and we’ll pick a posting to explore.

14.12.2024 22:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Hey friends! I need your help.

I’m interested to hear about how you’re experiencing my live streams. I’m thinking the current pace is pretty slow, so I’m open to suggestions on how I can improve it.

(continuing below)

14.12.2024 22:08 πŸ‘ 1 πŸ” 1 πŸ’¬ 1 πŸ“Œ 1
E9: Building AI-powered Resume App
E9: Building AI-powered Resume App YouTube video by Lazar Nikolov

I'm live on YouTube doing DDD in Python. Let's hang out! youtu.be/Ukx-EgVME94

13.12.2024 14:01 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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OK. So, here we go! #bskycourse is officially live! Originally published on Twitter I am once again glad to welcome you all, future developers, curious lurkers, and fellow engineers. This first course is going to be about a very cool language called Go (or golang for short).

18.11.2024 11:04 πŸ‘ 15 πŸ” 3 πŸ’¬ 1 πŸ“Œ 1
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Stop writing SEO-first! These are the 4 types of DevRel content (plus their Leading Themes) Discover how to classify DevRel content to understand what works for your team. Learn about 4 content types, their goals, and leading themes.

I've been working with @guthals.com to define a content framework that is optimised for DevRel success at @sentry.io, which started with an exercise to categorise existing content.

Bonus: I've created a spreadsheet template you can use to do the classification exercise with your own content.

11.12.2024 09:50 πŸ‘ 15 πŸ” 6 πŸ’¬ 1 πŸ“Œ 2