How about add custom option for synchronisation interval (you can choose number and min/hours/day) or add maybe shorter time maybe 1/2 min?
Hello, and welcome!
Why would you want that?
For example: I open Joplin on PC, create a new note and close in less than 5 minutes, the note won’t be available one other device. I have to click it synchronise button.
And it’s nice to have option to synchronise when you close/open Joplin
I see. I may be wrong, but IIRC Joplin originally synced much more often, but then the interval was prolonged so it wouldn't sync constantly.
Maybe you could use manual syncing as a workaround? Don't forget you can trigger a sync by hitting ctrl + s, and if you've only edited a note or two, the sync will finish in a second, so you can close the app again.
(I like to keep Joplin running. But that's just me. 
)
I think a better question is why would you not want that? First of all, countless apps provide almost automatic syncing: Change I make on my iPad are almost immediately visible on either my phone or my Mac and vice versa. To answer the OP's question, there are are times when I may be looking at a note on one device and editing on another. With such a long sync interval, my notes get out of sync. I might not be able to manually sync my notes before I have to pick up another device and view or edit that note on it. I can think of quite a few more instances where a sync interval of five minutes is not quite short enough.
The post you responded to is over 4 years old. I do not know if changes to sync have been made since the original post or if it was always the case, but the sync section of the help page on the Joplin site states:
... the application will synchronise in the background whenever it is running, or you can click on "Synchronise" to start a synchronisation manually. Joplin will background sync automatically after any content change is made on the local application.
Unfortunately I do not find that to be the case. I am coming back to using Joplin after a short hiatus. One of my reasons for taking a break from Joplin and exploring other options was the slowness of the sync. Since my iPad only has wi-fi, if there wasn't a wi-fi network available, oftentimes my notes wouldn't be up-to-date just because the sync wasn't automatic. I was hoping with the Joplin Cloud feature now that that would improve, but it apparently hasn't: I have had two conflicts in the past two days just because I had an instance running on my work computer and on my iPad at the same time. As I have said, with other apps I can have an instance open on my desktop, my phone, and my iPad at the same time and make changes on any of them and have them automatically appear on the others. With Joplin I can't seem to do that.
Im new to ubuntu and just found out about Joplin myself. It seems to be what ive been looking for except for the syncing . It takes forever to do that. Anybody figured anything out about this yet?
I am syncing to file system on my android phone and on my laptop. The file systems are synced by Syncthing. I would prefer to have joplin sync automatically every 30s or 1 min since I am syncing to file system and that is almost instant. I like to be able to switch device to take notes without worrying about out-of-sync conflict edits.
This is actually possible (at least on desktop) but you need to edit the config file manually and then set the interval to any number of seconds you want. However, please keep in mind that Joplin does automatically push your local changes as they happen anyway. It's only about downloading remote changes where the sync interval makes a difference.