marty Thanks for your response, marty. I've done some more extensive testing and I must retract what I said previously. Wpfc is working, though maybe it's not exact optimised the way I expected. I wish the load curve wasn't so steep, but this may have to do with a rather basic server I am on. Without it the site stops serving at about 200 readers. With wpfc on I can do a thousand. Redis page cache does not come near that,
With wpfc working I am now wondering how I can control the object cache (redis). It is running, but I need another plugin to control deleting it, I have installed w3 total cache, but I am afraid it is unaware of the object cache store already on the server and trying to cache again. But I may be wrong.