How many online clients does jellyfin support?

[TheDreadPirate]

Jellyfin is exclusively 64-bit for x86 CPUs. ARM32 is deprecated and 10.11 there will simply not be an ARM32 version.

The number of clients Jellyfin can support depends on a lot of things. Jellyfin won't become "unstable", AFAIK, after a certain number of clients. You will simply exhaust your server's ability to reliably serve data before Jellyfin becomes "unstable". That can mean your storage's ability to serve up the files fast enough, or your network/Internet's ability to transfer data fast enough, or your CPU/GPU's ability to transcode enough streams for the number of clients you have.

Search performance varies greatly depending on the number of items you have in your library. SQLite just isn't the fastest. "Jellysearch" is an external application that can be used to search your Jellyfin instance more quickly.

https://forum.jellyfin.org/t-jellysearch

I'm sure there is a reason for not being able to change the database cache, but I don't think that would meaningfully improve Jellyfin's DB performance. The development/unstable branch of Jellyfin recently merged a database refactor that will eventually pave the way for external DB providers (like postgresql). But that is months away, minimum.