You need a so called profiler to measure which part of your application does make use of CPU and Memory Resources. XDebug is such a profiler for example. Using it will show you exactly which part of your application uses how much of CPU and memory.
The WordPress database is already indexed. See this codex article for a detailed list of indexes per table: http://codex.wordpress.org/Database_Description And even if it weren’t, you’d need to know what queries are being run in order to effectively add indexes. Meaning, there would be no quick fix–you’d have to learn how indexing works, figure out what … Read more
I think I found what the problem was. WP-Postviews. I deactivated the plugin and removed all code from it on the site and now everything is running smoothly (at least for the last 3 hours).
Here is a basic class which you can create once: if ( ! class_exists(‘my_class’) ) : class my_class { public $my_var; // This variable is for a single instance static $instance; function __construct () { // Call other methods like this $this->initialize(); } function initialize () { // Populate your variables here $this->my_var=”any value you … Read more
It’s a very loaded question, I’ll try my best here, keep in mind it’s 4am, so I’m just giving you highlights, not detailed explanations. Linux I’m assuming you’re using a recent version of Ubuntu Change the default SSH port from 22, to something else (/etc/ssh/sshd_config). Either enable AllowGroups or AllowUser in the sshd_config, Install fail2ban … Read more
WordPress should behave the same, only dependent on your server resources. I hope you have a dedicated server because if not then you will experience severe outages and possibly cancellation of your hosting service. WordPress is merely databases and PHP, so amount of files will not affect its use. It is stable. You could have … Read more
A lot of this is very subjective and hard to answer because of different server environments, themes, size of database etc. In your experience, when is the time one needs to start thinking about scaling up? If you are concerned with your users experience you should already be practicing sound front end performance techniques. When … Read more
This is a fantastic question – I’ve personally never run into this before, but here’s what I’d try, assuming: you have an image of a server that you’ve been using to spin up new instances you’re using a CDN and cloud storage for images and uploads (rather than having a local uploads folder) With those … Read more
I understand that having less data being downloaded improves the experience to the end user, but my question is related to the actual server performance, would the response be faster? Would adding _fields[]=id&_fields[]=title, etc… to the above url improve server performance? No it would not, and for several reasons. When you ask for a post … Read more
Twitter and other high-volume sites probably do this one layer ahead of the servers. Probably with a load balancer that can detect the server load over all servers and if the load is too high (when machines stop replying) they redirect traffic to a server that returns only the “fail whale” page. This answer on … Read more