Top all-time · #7388
Andy Davies
Personal blog · andydavies.me/blogwebprogramming
Andy Davies's personal blog at andydavies.me covers web and programming. Since 2013, 11 different Hacker News readers have linked it 14 times, most often “Safari, Caching and Third-Party Resources”. No feed was found, so read it on the site itself.
Too few sampled comments (9) to say how often HN recommends it.?
Why HN links it
HN readers cite Andy Davies's posts on browser page-load behaviour, the browser preloader, and Safari's cache partitioning, plus a Frida guide to decrypting TLS traffic. One commenter called the preloader post a pretty good explanation.
Summarised by Claude from a sample of 9 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- Safari, Caching and Third-Party Resources5 people · 6 mentions · first linked 2018-09-06
- Capturing and Decrypting HTTPS Traffic from iOS Apps Using Frida (2019)3 people · 3 mentions · first linked 2020-03-28
- How the Browser Pre-loader Makes Pages Load Faster2 people · 2 mentions · first linked 2013-10-28
What Hacker News says?
It's a couple years old but this is a pretty good explanation of the preloader - http://andydavies.me/blog/2013/10/22/how-the-browser-pre-loa...
Comment linking /blog/2013/10/22/how-the-browser-pre-loader-makes-pages-load-faster/
on “A Guide to Fast Page Loads”Submitted Capturing and Decrypting HTTPS Traffic from iOS Apps Using Frida (2019) as a story · 36 points
HN discussionIf you've got a Jailbroken phone, this post explains how to extract the TLS keys (to decrypt the traffic) using a Frida script https://andydavies.me/blog/2019/12/12/capturing-and-decrypti...
Comment linking /blog/2019/12/12/capturing-and-decrypting-https-traffic-from-ios-apps/
on “Zoom’s Use of Facebook’s SDK in iOS Client”Submitted From a logfile to a histogram with a few lines of R - Andy Davies as a story · 6 points
HN discussionEach origin has its own cache, so it doesn't matter if you load your fonts from the same place as some other site -- they won't be shared. https://andydavies.me/blog/2018/09/06/safari-caching-and-3rd... https://www.zdnet.com/article/chromes-new-cache-partitioning... https://arstechnica.com/gadgets/2020/12/firefox-v85-will-imp...
Comment linking /blog/2018/09/06/safari-caching-and-3rd-party-resources/
on “Outlook just asked me if I want to upgrade to bigger ads”Submitted Safari, Caching and Third-Party Resources as a story · 2 points
HN discussionThis isn't effective as browsers partition the cache using a double (or triple) key of the document origin and third-part origin. Safari started this and Chrome is following - https://andydavies.me/blog/2018/09/06/safari-caching-and-3rd... So with a public JS CDN React would be still transferred multiple times. Using a custom bundle is probably more efficient as it should compress better resulting in lower download…
Comment linking /blog/2018/09/06/safari-caching-and-3rd-party-resources/
on “How can we, as web professionals, help to make the web more energy efficient?”Submitted Safari, Caching and Third-Party Resources as a story · 1 points
HN discussionOP here. Cross-domain caching is a myth[1] so reusing font files won’t work. In fact, it’s literally impossible in Safari[2] and soon to be made impossible in Chrome[3]. 1. https://csswizardry.com/2019/05/self-host-your-static-assets... 2. https://andydavies.me/blog/2018/09/06/safari-caching-and-3rd... 3. https://bugs.chromium.org/p/chromium/issues/detail?id=910708
Comment linking /blog/2018/09/06/safari-caching-and-3rd-party-resources/
on “The Fastest Google Fonts”Submitted How the Browser Pre-loader Makes Pages Load Faster as a story · 1 points
HN discussionBased on https://andydavies.me/blog/2018/09/06/safari-caching-and-3rd... it seems highly unlikely that a popular module will be in the cache - Safari double keys it's cache to prevent 3rd-parties tracking across sites - Usage of common libraries is just too low for their to be a critical mass A whole site running on a CDN still involves only one connection, will make use of the throughput growing the TCP congestion…
Comment linking /blog/2018/09/06/safari-caching-and-3rd-party-resources/
on “Pika CDN – A CDN for Modern JavaScript”Footnote: if the scripts are not necessary for interaction, moving them to the footer and marking them deferred/async allows you to prevent the browser preloader[0] from being too eager with downloading them during downtime. This is effectively a poor man's resource priority hints[1], allowing the developer the ability to prioritize downloads for the browser. [0] https://andydavies.me/blog/2013/10/22/how-the-browser…
Comment linking /blog/2013/10/22/how-the-browser-pre-loader-makes-pages-load-faster/
on “Speeding up this site by 50x (2014)”Should only work for first party though. Safari partitions its cache by the origin in the address bar[1] so your typical advertising tracking should not work. [1] https://andydavies.me/blog/2018/09/06/safari-caching-and-3rd...
Comment linking /blog/2018/09/06/safari-caching-and-3rd-party-resources/
on “Cookieless cookies (2013)”Is there anything that can be done with a non jailbroken iPhone to circumvent certificate pinning? I'm reading[0] that Frida can work "if you can include Frida’s libraries in the app - either via debugging an app you own, or repackaging someone else’s app and injecting the dylib." Is repackaging/injecting hard to do? Thanks! [0] https://andydavies.me/blog/2019/12/12/capturing-and-decrypti...
Comment linking /blog/2019/12/12/capturing-and-decrypting-https-traffic-from-ios-apps/
on “Leaving Spellcheck Enabled Is a Privacy Risk (2016)”
