The demo clearly seems to be deployed on hardware not designed to handle the kind of traffic HN generates. When I first posted this, it was working just fine. Now it won't even load.

P.S. I'm not the author.

Relax had an enormous spike of traffic that I wasn't expecting, in the meantime upgraded the server a bit to support the traffic it was getting. There is still of course work to do to optimize it

Out of curiosity, was the server side rendering the cause of this issue?

It was simply the huge traffic inflow and our server had only one core, poor thing ahah. We've upgraded it to only two cores and it's day to night difference. Server side of course has some weight but it has caching so it is quite fast.

Major problem for now is that in some places it still doesn't retrieve data with the right projection, for example when creating a menu it loads all the pages with everything in it. That's why I'm switching to Relay to make this easy pie and more reliable

>When I pick a CMS, the tech stack is a consideration but I scrutanize the admin interface much much more.

Right, I agree. And interestingly, I'm firmly of the opinion this is one of the reasons Wordpress continues to win in this space; albeit for familiarity reasons rather than it being a paragon of good UX, and despite it's core and plugin system being incredibly ugly in too many ways.