Title: Cache clearing troubles
Last modified: January 19, 2017

---

# Cache clearing troubles

 *  [salromano](https://wordpress.org/support/users/salromano/)
 * (@salromano)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/cache-clearing-troubles/)
 * Most times that I try to clear the cache, it loads for a while and then I receive
   a 503 error. Every so often it will work and actually clear the cache. Any ideas
   what might be wrong here?

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [andreslucero](https://wordpress.org/support/users/andreslucero/)
 * (@andreslucero)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/cache-clearing-troubles/#post-8675453)
 * You’re most likely overloading your server:
 * [https://www.lifewire.com/503-service-unavailable-explained-2622940](https://www.lifewire.com/503-service-unavailable-explained-2622940)
 * If you have access to the server’s configuration files, you can try increasing
   the PHP memory limit:
 * [https://docs.woocommerce.com/document/increasing-the-wordpress-memory-limit/](https://docs.woocommerce.com/document/increasing-the-wordpress-memory-limit/)
 * Otherwise, you may need to upgrade your server with more physical RAM and/or 
   CPU to handle memory- and processor-intensive tasks.
 *  Thread Starter [salromano](https://wordpress.org/support/users/salromano/)
 * (@salromano)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/cache-clearing-troubles/#post-8676773)
 * Is there any reason I’m overloading my server by trying to clear my cache with
   this plugin though? What separates my doing it from someone else doing it without
   issue, for example?
 *  [nigro.simone](https://wordpress.org/support/users/nigrosimone/)
 * (@nigrosimone)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/cache-clearing-troubles/#post-8678253)
 * Maybe you have a tons of pages cached and when you purge (delete) the cache you
   overloads the server resources.
 *  [juanzheng](https://wordpress.org/support/users/juanzheng/)
 * (@juanzheng)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/cache-clearing-troubles/#post-8686321)
 * I also have the same issue, but on my site the problem occurs whenever someone
   edit a post and update. And then the site will be unaccessible and return 524
   error.
 * Btw I use w3 total cache: page cache with disc basic and redis object cache plugin
   for the object caching.
 * do you have any ideas about what is happening?
    thanks
    -  This reply was modified 9 years, 4 months ago by [juanzheng](https://wordpress.org/support/users/juanzheng/).

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Cache clearing troubles’ is closed to new replies.

 * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806)
 * [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/w3-total-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/w3-total-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/w3-total-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/w3-total-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/w3-total-cache/reviews/)

## Tags

 * [cache](https://wordpress.org/support/topic-tag/cache/)

 * 4 replies
 * 4 participants
 * Last reply from: [juanzheng](https://wordpress.org/support/users/juanzheng/)
 * Last activity: [9 years, 4 months ago](https://wordpress.org/support/topic/cache-clearing-troubles/#post-8686321)
 * Status: not resolved