DNS
.blog vs .com TLD performance
Traditional and established top-level domain resolves faster than the newfangled .blog top-level domain. Unsurprising, but worrisome.
WebPerf
Advertisement Technology
Make AdSense faster with preconnect
Reduce Google AdSense’s impact on page-load time using <link rel="preconnect">. Optimization only used on 350 out of 12M AdSense partner websites.
Web Browsers
What to <link rel=dns-prefetch> and when to use preconnect
Learn the difference between dns-prefecth vs preconnect, how to work around browser bugs, and when to use which? iOS and Safari requires special attention.
Image Files
Progressive JPEGs make a meaningful impact on perceived performance
Make a meaningful improvement in user experience for your website visitors, especially those with slow internet, with semi-progressive JPEG loading.
Web Browsers
Safari’s Beacon API problems
You must implement the Beacon API the way WebKit deems to be “the right way” to make it work on iOS, Safari, and WebKit browsers.
Compression
Compressed favicons are 70% smaller but 75% are served uncompressed
The majority of websites don’t compress their favicon files despite an impressive average file size reduction of over 70 %.
Copyright
Aren’t AMP Caches committing copyright infringement?
How can mass-copying pages from web publishers without a license not be mass-copyright infringement? The weird copyright law exemption that enables AMP Caches.
Browser Extensions
Chrome is right to remove the webRequest extension API
As an extension developer, I support Google’s controversial decision to remove of a slow and over-powered extension API favored by ad-blocking extensions.
DNS
Secondary authoritative DNS service providers compared
A comparison of the security features and other features offerings (AXFR, DNSSEC, TSIG, IPv6) at 14 different secondary/slave DNS providers.
CDN
Compared DNS caching/TTL of different CDNs
Short DNS TTL times are great for failover but can be detrimental to DNS performance. Here’s a comparison of the DNS TTL caching durations of popular CDNs.
Apache HTTPD
Problems to expect when using the Apache mod_cache module
Five implementation problems and gotchas when using Apache’s HTTP caching module. Learn how to keep your HTTPD caching proxy server from messing up.
Apache HTTPD
Allow OCSP stapling in Apache Web Server with SELinux policies
Adjust the default SELinux policies in CentOS and Fedora Linux to not block the Apache HTTPD Server from OCSP stapling TLS certificates.