Shiny and R: load data only once - do not load at each start of app and have progress bar

Question

I am loading somewhat large data files in the global.R file of my shiny-app on a shiny-server. The advantage of loading it in the global.R file is that it only loads once - not for every user again (if I understand correctly). However, the disadvantage is that way the apps takes around 10 seconds to start and I have no way to show a progress bar or anything. Does anybody know how to solve this issues?

Is there a way to save a workspace for ShinyApps? That way the data would not have to be loaded by load(...) .

Answer 1

For the progress bar, you can use the shinyjs package to hide/show components. See for example this link Shiny Dashboard - display a dedicated "loading.." page until initial loading of the data is done