next-server process is loaded 100%

[Ohthatorh]

Summary

In the production version, with a huge load on the site (SEO Spider frog in 4 windows at maximum speed), one node-server process loads 100% and the site starts to work very poorly

Additional information

No response

Example

No response

[SametDulger]

Hi @Ohthatorh,

Thanks for raising this. Seeing a next-server Node.js process at 100% CPU under heavy load like multiple SEO spiders running is not uncommon, but it does indicate some performance bottlenecks or resource limits being hit.

Here are some suggestions to improve performance and reduce CPU usage:

• Enable caching

Use ISR (Incremental Static Regeneration) or Static Site Generation (SSG) wherever possible to reduce server rendering on each request.

• Rate limit bots/crawlers

Configure your server or CDN to throttle or block aggressive crawlers that hammer your site. This helps prevent overload.

• Use a CDN

Offload static assets and cacheable pages via a CDN to reduce load on your server.

• Profile and optimize API routes or Server Actions

Look for any heavy synchronous code or slow database queries that block the event loop.

• Horizontal scaling

If you expect heavy traffic, deploy multiple Node.js instances behind a load balancer.

• Monitoring and logging

Use profiling tools to identify hot paths or memory leaks causing CPU spikes.

If you provide more details about your setup, caching strategy, and hosting environment, I can offer more specific advice.

[Ohthatorh]

Hello! Thank you! Deploying additional Node.js instances did help, since everything else was already configured (CDN, caching and SSR).