Re: How to load Rdata file only once in ShinyApp

[Corey Bishop]

Perhaps this would help. https://stackoverflow.com/questions/43974386/how-to-load-a-file-in-shiny-only-once

Corey

On Wed, Mar 10, 2021 at 7:21 AM chas <meha...@gmail.com> wrote:

Hi,

I have deployed a shinyapp which uses a .Rdata file of ~700Mb.The Rdata file is loaded in server-inputdata.R file and the server.R file looks like as shown below:

options(shiny.maxRequestSize = 100*1024^2) 

source("helpers.R") 

source("server-inputdata.R",local = TRUE) 

shinyServer(function(input, output,session) { 

source("server2.R",local = TRUE) 

source("server3.R",local = TRUE) 

 })

Here, server2.R and server3.R has visualization code which uses the data loaded from .Rdata file in server-inputdata.R

Whenever the app is loaded, the Rdata file is getting loaded for each user. Could someone help how to load the data only once to provide immediate access for the second user onwards.

I have also tried source("server-inputdata.R",local = FALSE)  in the above code, which did not work.

Here is the code in server-inputdata.R

inputDataReactive <- reactive({ 

load('04.Rdata') 

return(list("data"=data_results, "data_results_table"=data_results_table))

 print("uploaded data") 

})

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