alt Hacker News<3 I always love seeing your comments and questions, too!
Well on the subject of PHP, I think I've got a nice story.
The more recent one is about Wordpress. One day, I had this conversation:
Boss: "will the blog stay up?"
toast0: "yeah, nobody goes to the blog, it's no big deal"
Boss: "they will"
toast0: "oh, ummmm we can serve a static index.html and that should work"
Later that day, he posted https://blog.whatsapp.com/facebook I took a snapshot to serve as index.html and the blog stayed up. A few months later, I had a good reason to tear out WordPress (which I had been wanting to do for a long time), so I spent a week and made FakePress which only did exactly what we needed and could serve our very exciting blog posts in something like 10-20 ms per page view instead of whatever WordPress took (which was especially not very fast if you hit a www server that wasn't in the same colo as our database servers). That worked pretty well, until the blog was rewritten to run on the FB stack --- page weight doubled, but since it was served by the FB CDN, load time stayed about the same. The process to create and translate blog entries was completely different, and the RSS was non-compliant: I didn't want to include a time with the date, and there is/was no available timeless date field in any of the RSS specs, so I just left the time out ... but it was sooo much nicer to run.
Sadly, I haven't been doing any large scale optimization stuff lately. My work stuff doesn't scale much at the moment, and personal small scale fun things include polishing up my crazierl [1] demo (will update the published demo in the next few days or email me for the release candidate url), added IPv6 to my Path MTU Discovery Test [2] since I have somewhere to run IPv6 at MTU 1500, and I wrote memdisk_uefi [3], which is like Syslinux's MEMDISK but in UEFI. My goal with memdisk_uefi is to get FreeBSD's installer images to be usable with PXE in UEFI ... as of FreeBSD 15.0, in BIOS mode you can use PXE and MEMDISK to boot an installer image; but UEFI is elusive --- I got some feedback from FreeBSD suggesting a different approach than what I have, but I haven't had time to work on that; hopefully soonish. Oh and my Vanagon doesn't want to run anymore ... but it's cold out and I don't seem to want to follow the steps in the fuel system diagnosis, so that's not progressing much... I did get a back seat in good shape though so now it can carry 5 people nowhere instead of only two (caveat: I don't have seat belts for the rear passengers, which would be unsafe if the van was running)
Re: PHP vs a rendered index.html … your story brings back fond memories of my college days (around 2001–2002).
I was a full-time student but also worked for the university’s “internet group.” We ran a homegrown PHP CMS (this was before WordPress/Movable Type), and PHP still felt pretty new. Perl was everywhere, but I was pushing PHP because I’d heard Yahoo had started using it.
Around then, the university launched its first online class registration system. Before that it was all phone/IVR. I warned our team lead the web server would melt down on registration day because every student would be hammering refresh at 9am to get the best class times and professors. He brushed it off, so I pre-rendered the login page as a static index.html and dropped it in the web root.
He noticed, got mad (he had built the CMS and was convinced it could handle the load), and deleted my pre-rendered index.html. So young and dumb me wrote a cron job that pinged the site every few minutes, and if it looked down, it copied my static index.html back into the web directory. Since Apache would serve index.html ahead of PHP, it became an instant fallback page.
Sure enough, at 9am the entire university website went down. Obviously orders of magnitude less scale than your FB story (and way less exciting of an event), but for my small university it was brief moment panic. But my little cron job kicked in and at least kept the front door standing.
While I’m not in active day to day development anymore, I do still work in tech and think a lot about ways to avoid computation. And something I’ve learned a lot from reading your posts over the years and my own personal experiences is just how big you can scale when you can architect in a way that “just pushes bits” (eg “index.html”) as opposed to computes/transforms/renders something … and I’m not sure you can ever really learn that expect through real world experience.
Regarding your links, I’ve seen you post about 1 before and have read about it - it looks very cool. I don’t recall seeing 2 or 3 before and look forward to reading more about those. Thanks as always for your insights!