The basic technique of logging queries is that if SAVEQUERIES constant is defined to be true (it’s not by default for performance reasons) then $wpdb->queries will keep the log of queries performed. There isn’t anything on top of this that WordPress natively does. There are plenty of plugins around which work either by interpreting this … Read more
Haven’t actually seen plugins with 30 shortcodes, but my opinion on this is, it is too much and I would really want to know what are all these shortcodes for. To come back to the actual issue, shortcodes is slower than normal functions because they need to be parsed. This differences should be minute though. … Read more
APCu > Memecachedd when doing caching on only one server. Memcached should be used to have object caching in multi server enviroment while on a single server the overhead of the communication and task switching involved with using it is just pointless when compared to the not complicated direct approach to memory that APCu takes. … Read more
Sounds like you are trying hard to shot yourself and you will likely succeed. Every framework has its own assumptions and limitation so if the assumptions of wordpress do not fit your needs then just don’t use wordpress for the project. If you (ok, probably the client) have decided that for reasons of cost, delivery … Read more
While it is impossible to pinpoint why it takes so long without access to your server, the core issue is that when the webserver do not find a file it will execute wordpress to handle the URL, and as the URL is unlikely to match any content it will result in a generation of a … Read more
The add_rewrite_rule function doesn’t change the database. Just an array in memory. It is not an expensive operation. The alternative is to add code to detect whether your rule is there, which is actually more expensive than just modifying the array.
If i create an array and convert it into JSON, will it be faster if i call 12 meta fields one by one or call the JSON, parse it and then have the variables? Virtually no difference. The meta API means that all meta keys/fields/values are pulled into memory from the database at most once … Read more
You will want to put the code in the child theme, otherwise an update to the parent theme will erase it. You want the loader to be a part of the page as the document is first loaded by the browser, then use javascript to detect when the images are finished loading and remove the … Read more
You should not ignore those warnings. From screenshot, It shows your theme is using deprecated mysql functions. Check your apache2 logs -> If this is really an issue there will ton of logging If yes, your theme is causing the issue. If the above is true, do this: 1) Switch to some other theme. 2) … 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