ZenCache makes 5,000 reqs/sec WordPress sites easy
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One of my companies is a hosting companies, where I migrate clients + tune their sites.
Most WordPress sites run around 10 reqs/sec (on a very good day) which has nothing to do with WordPress + everything to do with how the WordPress Stack is configured + tuned.
WordPress Stack… correctly selecting + tuning all the following…
Hardware + OS + Ethernet Adapter + TCP/IP stack + filesystem (ext4/btrfs) with access time accounting disabled, /tmp in memory not on disk, MariaDB/MySQL + Apache-2.4 over Apache-2.2, SSL with Stapling on + PHP + OpCache + XDebug.
Finally WordPress – core + theme + plugins, of which caching is most important.
On well tuned servers, every single caching plugin, except QuickCache/ZenCache, slows down WordPress. By well tuned, I mean an Apache Stack able to serve 30K-60K reqs/sec for flat files.
Adding ZenCache to a well tuned server makes WordPress easily exceed the 5,000+ reqs/sec mark – with Zero Tuning.
Zero Tuning is important.
With other Caching plugins, you can futz around for hours an sometimes approach 25-30% the speed of ZenCache or just install ZenCache + hit enable.
I don’t work for Websharks or get paid by them.
I’m just a Websharks code groupie.
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