I’d recommend against options IPFIREWALL_DEFAULT_TO_ACCEPT. The default is to Default to Deny. The firewall comes up with just one rule deny ip from any to any and stays that way until a script configures exactly what traffic should get through. Follow-Up Note: RSA (one of the world’s leading security technology companies) was hacked recently when … Read more
You can block/allow external requests if you like, using a combination of WP_HTTP_BLOCK_EXTERNAL and WP_ACCESSIBLE_HOSTS. Here is the note from /wp-includes/class-http.php: /** * Block requests through the proxy. * * Those who are behind a proxy and want to prevent access to certain hosts may do so. This will * prevent plugins from working and … Read more
Here are some numbers that you are probably looking for, as quoted by Jeff Dean, a Google Fellow: Numbers Everyone Should Know L1 cache reference 0.5 ns Branch mispredict 5 ns L2 cache reference 7 ns Mutex lock/unlock 100 ns (25) Main memory reference 100 ns Compress 1K bytes with Zippy 10,000 ns (3,000) Send … Read more
The is_admin() function is basically used to check whether the running request is routing on /wp-admin/. Calling the is_admin() conditional function, you can restrict files you only want to load when a request goes through the /wp-admin/. Note that is_admin() and is_super_admin() are not the same and both handle different conditions. Looking forward, when sending … Read more
I’m not sure, if it is the root of the problem, but the thing that I noticed is that your code ends up calling get_post_meta quite many times (64? 8 loops within 8 loops, yes?) for the same post. Perhaps you could get all of the post meta just once, before the for loop. Then … Read more
The Query Monitor plugin will often highlight issues and is definitely worth a look.
From a very high level, off the top of my head these are the main things that contribute to how long it takes to load a page in the dashboard in WordPress: Application processing: PHP/Apache doing work Database processing: PHP calling MySQL and the time for queries to run External services – calling external API’s … Read more
My question is, is it a good idea to use docker for a big woocommerce website (more than 100k products)? Or will this incur a noticable performance cost compared to running wordpress straight on the VPS (without containerization)? It won’t make much difference, nothing you will notice. It’s not even in the top 50 things … Read more
Google Page Speed tells you that cached files slow down your page not because cached files are slower than non-cached ones. It’s because (for example) file: https://whcl.ir/wp-content/cache/min/1/aad770152f8bd8d0197b0ef0ecc3052b.css is a combination of all your CSS files and it is the only one, so it contains all your theme, plugins and WP CSS code. When files are … Read more
135kb isn’t the end of the world. I would assume this is cached data for displaying news updates on a dashboard widget. Ideally they wouldn’t auto load this on the front end, but I doubt the impact on performance is significant. If you see a noticeable performance improvement from removing it then you might want … Read more