Why Next.js Apps Struggle on Kubernetes & How to Fix It | THE NEXT GEN WEB PODCAST #17

Описание: In this episode of The Next Gen Web Podcast, we tackle the performance topic, but not from the usual client-side perspective. This time, it’s all about the server side of things.

We’re joined by two incredible guests: Trystian Offerman (Staff Engineer at Decathlon Digital) and Tomasz Czechowski (Principal Consultant from GFT Technologies). Together, we dig into Kubernetes, Next.js scaling, and server performance bottlenecks — with real-world war stories and practical fixes.

You’ll learn:

➡️ How to diagnose if your Next.js slowdown is in code or infra.
➡️ Real-world Kubernetes misconfigurations that kill performance.
➡️ Why misuse of Server Actions can tank throughput.
➡️ Scaling strategies (vertical vs horizontal) for Node.js apps.
➡️ Balancing SEO, AI crawlers, and user experience in modern web apps.

If you’ve ever wondered why your Next.js app is slow even when the frontend looks fine, this episode is for you.

Jakub (Head of Integration):   / jj-dev  
Tomasz (Principal Consultant):   / tomaszczechowski  
Trystian (Staff Engineer):   / trystian-offerman-044b5478  

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00:00 – Introduction: Why server-side performance matters in Next.js
02:00 – Identifying bottlenecks with Time to First Byte (TTFB) & Core Web Vitals
05:30 – Common mistakes with API routes, middleware, and Node.js event loop
12:00 – Kubernetes pitfalls: ingress buffers, keepalive, and sticky sessions
20:30 – Decathlon’s case study: 2 requests/sec problem on Kubernetes pods
25:00 – Scaling lessons: vertical vs horizontal scaling in production
34:00 – Server Actions misuse and how fixing them doubled throughput
43:00 – SEO, AI crawlers, and why server-side rendering isn’t always free
52:00 – Load testing & observability: why every project needs them on day one
01:05:00 – Key takeaways: static vs dynamic pages & designing for scale

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