Aller au contenu
Centre d'aide Ruachost

Fixing 503 and 508 "Resource Limit Is Reached" errors

Ce contenu n’est pas encore disponible dans votre langue.

Every hosting plan has its own share of the server’s CPU, memory (RAM) and processes. This keeps one busy website from slowing down everyone else. When your account reaches one of these limits, new visitors see:

  • 508 Resource Limit Is Reached, or
  • 503 Service Unavailable

The error usually clears by itself within a few minutes, once the busy moment passes. If it keeps coming back, something on your site is using more than your plan allows.

1. See which limit you’re hitting

Section titled “1. See which limit you’re hitting”

In cPanel, open Resource Usage under Metrics. It shows when your account reached its limits and which one:

Limit What it usually means
CPU Pages are slow to build: heavy plugins, no caching, or a lot of bot traffic
Physical memory Scripts use a lot of memory, often imports, backups or page builders
Entry processes Too many visitors or requests at the same moment, often bots or an attack
Number of processes Too many scripts running at once, such as overlapping cron jobs

See Monitoring resource limits in cPanel.

2. Bring usage down

Section titled “2. Bring usage down”
  • Turn on caching. For WordPress, use LiteSpeed Cache. Cached pages need almost no CPU or memory.
  • Block bad bots. Check cPanel’s Awstats or Visitors for unusual traffic. Protect your login page with limited login attempts, and consider Cloudflare to filter traffic before it reaches your site.
  • Remove heavy or unused plugins. Plugins for statistics, related posts, broken-link checks and backups are common culprits.
  • Move heavy jobs to quiet times. Run imports, backups and reports as cron jobs at night, and make sure they don’t overlap.
  • Replace WordPress’s built-in cron with a real cron job so it doesn’t run on every page view.
  • Clean malware. Hacked sites often send spam or attack other sites, using all your resources. See Scanning for malware with Imunify360 and Monarx.

3. Upgrade if your site has grown

Section titled “3. Upgrade if your site has grown”

If your site is simply busier than your plan was built for, move to a bigger plan or a Managed VPS. Upgrade from the client area under Services → Upgrade/Downgrade. Your files, email and settings stay as they are.

Section titled “Related articles”

Cette page vous a-t-elle aidé ?