I'm a business owner and not a developer. We have 20,000 page WP site which had recently added W3 Total Cache web cache plugins recommended by an SEO company and installed by our developers. I don't think our developers are familiar with this plugin as they appear not to have used in an earlier install.
Our developers are not server savvy, by their own admission and have not done sites in excess of 100 pages. But I did not think this would be a big deal. Not long after the web cache was installed the server crept to a halt ( 500 server error ). Not sure if it was connected but over 80,000 files were held in the cache folder, which our administrator ditched.
Being concerned, I asked our server administrators what to do, and this is what they said :
"There are alternatives to cache for wordpress. I was researching that this can actually work against the purpose. There are solutions such as varnish cache, which are installed at a server level (meaning we would need to install and configure this, versus the developer ) which can take the server load from maxing out with 15 concurrent users on wordpress, to allowing 1000s of users with no effect on performance. Part of the problem appears to be the wordpress setup, it doesn't perform as well as it used to." ( That is the initial setup )
Our server administrator continues to empty the cache folder until a solution can be found.
I have full confidence in the Amazon Elastic server as the administrators host very large clients, including banks.
What should our developers be looking for to make sure the plug-in is correctly configured? What do you suspect?
We're happy to have a paid review, but will that necessarily reveal the issues to be fixed.