The most of editing process (from loading editor page to saving post) happens in browser and doesn’t involve server. The one exceptions is auto save feature – post will be quietly saved by JavaScript in background, every minute by default. This might cause performance issue if you have considerably large posts, considerably many editors and … Read more
You can use a fantastic plugin called CDN Linker.
I use W3 Total Cache as well, so I double checked on my site to see what headers are being sent … and images are not sending anything that varies on User Agent. An example image response header: HTTP/1.1 200 OK Server: nginx Date: Tue, 27 Mar 2012 15:48:18 GMT Content-Type: image/png Transfer-Encoding: chunked Connection: … Read more
In the case where you want to store each piece of data as a unique entry (row) in the database, then a custom table, as you’ve already done, is a perfectly fine solution. On the other hand… You could use the usermeta table to do the exact same thing, storing multiple meta keys with the … Read more
It depends on what you need. The software environment is the same you need for every other PHP site where you want to get an efficient workflow: up-to-date PHP (currently 5.5, so you can use Opcache) with at least 128 MB memory limit the same for MySQL web server with a rewrite engine regular backups … Read more
There is no explicit mechanism for disk based caching. If you are writing a plugin or theme you intend to distribute you should be careful with allocating a folder for it, probably better to have some kind of an option for a user to configure that location. If this is something for a specific site, … Read more
It looks like that wordpress can’t check for updates on the one server but can on the other. WordPress does not output much information if it can’t, it’s just an request which takes it’s time to time-out. Install the Disable WordPress Core Update (WordPress Plugin) and the Disable WordPress Plugin Updates (WordPress Plugin) to disable … Read more
It’s a well-known problem among WordPress specialists that GoDaddy overloads their servers and you get tons of performance problems with it. If you are at GoDaddy because they are inexpensive let me recommend a host I’ve been using for years: A Small Orange. You can get a minimum account there for $US25/year, their Tiny plan. … Read more
Afaik there’s no real performance test available (what exactly do you want to check?), but you can find a plugin that came out of the first Q below, that might help you doing some profilling. An interesting read might be… refactoring WP to improve memory performance generally a lot of Qs inside the performance tag … Read more
No, notices by themselves are not a performance issue and generating them typically doesn’t take considerable resources (there are exceptions if you are replacing error handler – I seen it get slow because of larger output volume and conflicts with antivirus). Of course what they do indicate is potential issues with code quality, which is … Read more