See Scalability Limits for Note taking Applications
There are claims in the official website about how much data can a single Tiddlywiki can hold. However, no actual benchmarks are given. I looked around and found the biggest public examples of Tiddlywiki I could find:
I downloaded them for further testing. H0p3 seems to be managing all lists in the wiki statically1. That is fine by me, I am a firm believer of not using app specific markup in the notes. However, an audit note by the author in which he talks about data loss, issues with NodeJS and other TW5 saver mechanisms and so on gives some serious points to ponder over.
Kenan's wiki loaded without any issues, but the good news ended there. Saving a note takes 5+ seconds. 5 seconds is not the end of the world, however the mild irritation that comes up with each wait is something I do not want in my note-taking workflow. Imagine each spelling mistake correction taking 5+ seconds.
The RAM usage that comes with loading and editing such a large single page application is also quite significant. Adding and editing notes in these wikis crashed my browser multiple times.
One of the most veteran users of Tiddlywiki had recently raised the issue of scalability which the community seems to have largely ignored.
Usual advice from the community is to split the data among several wikis. However, that will