504 gateway time-out and Deadlock

I have an e-commerce site running on Wordpress (Woocommerce). Sometimes my website crashes out of nowhere. I can’t do anything. The page is not loading. Sometimes I even get 504 gateway time-out error. For performance I use a proven caching plugin with CloudFlare. Page speed seems fine. But I can’t understand the reason for these deadlocks. Can you guide me, is the resource insufficient?

I am using Basic Shared CPU. The resource usage in deadlock is as follows:

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Bobby Iliev
Site Moderator
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August 7, 2022


Indeed it sounds like that it could be related to resource utilization. What I could suggest before increasing your resources is:

  • Try using a caching plugin like WP Super cache for example. That will reduce the overall server load.

  • Remove any plugins and themes that you are not using.

  • Try using Redis to store your PHP sessions, that way PHP would spend less time writing sessions on disk.

  • Tweak your MySQL service for better performance and reliability:

Hope that this helps!



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