Do you know different ways to extract data in real time from a source ?

[Anonymous]

Hello, 

It's a opened question, but do you know ways to extract data in real time from a source ? API can work or there is over ways ? 

In resume, having refresh automatically in real time 

Thank you.

[lbendlin]

Please provide a more detailed explanation of what you are aiming to achieve. What have you tried and where are you stuck?