Hi @derick - thanks for the comment!
As far as Hosting TCO v1, which is the effort to reduce overall disk space used by the CHT day to day, we’re not learning anything new - and this is a good thing! Let’s dive into why.
Almost exactly a year ago the ticket was opened to implement Couch 3.5’s Nouveau in the CHT. In this ticket, a number of key questions were asked. If all the answers were positive, it would very likely be a win for the community at large.
Just a month later, in Nov of 2024 we had good answers:
how much disk savings do we see?
I saw ~25% disk savings [on a production data set]
Every single upgrade since then has shown about this same level of disk savings. In the best case scenario, it’s been above 30%.
By April of 2025 there was some concern that maybe our test results weren’t valid, so we we re-tested using a number of production datasets. The high watermark of just under 35% savings still held.
And so it’s true with the tests this month - we’re still seeing the same savings be true and larger instances will stand to gain the most. We can’t promise any specific amount, but it’s looking good! Here’s the chart we cite often that summarizes all this:

