r - Update Shiny graph when new Data is received -


my shiny app uploaded on shinyapp.io server. have python script receive data serial port , written inside csv file inside pc. uploading whole csv file on shiny app , generates graph. since passage of time data getting bigger therefore take large amount of time upload , generate graph , when ever close tab of browser , open link again shiny app again ask upload file. unable retain previous state. therefore have following question regarding shiny app :

  • is possible restore previous state in shiny app after close , open instance again?

if possible can create new csv file in desktop every time after instance being opened. need send message messaging client running in pc.

  • does shinyapp , r support messaging client, example mqtt or socket.io?
  • currently have upload file, possible there should static path, don't have browser file using file browser , have click update button , update new file?
  • at extreme possible shiny app retain previous state , there should counter send sql query , if new data available graph gets update?

it should grab new data rather complete sql data base.


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