How is a constant request for new messages/notifications implemented by clients from the server database?

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Xcopy2014-09-09 23:09:38

MySQL

Xcopy, 2014-09-09 23:09:38

Hey!
We are writing a dating service for mobile operating systems. MySQL + Django backend.
At any time, the user can receive a message about which he will be notified by a push message (as in any applications a la VK, Facebook, etc.).
I don't quite understand how it's implemented... Does
each client request new messages from the server once a minute (or so)?
It would seem otherwise! But do tens of millions of smartphone users every minute (or so :) ) send a request to the Facebook server to find out if there is a new message for them?
It makes my head spin...
Maybe Facebook can somehow send new messages to customers?
Thanks in advance!

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5 answer(s)

X

Xcopy, 2014-09-11
@perminovma

Thank you all!
As a result, I began to use Google Cloud Messaging + django module django-gcm

A

Alexander Taratin, 2014-09-09
@Taraflex

www.google.com/search?q=websocket&oq=websocket&sou...
or
https://www.google.com/search?q=websocket&oq=webso...

@

@mgyk, 2014-09-09
_

It can be even easier through Server Sent Events www.w3schools.com/html/html5_serversentevents.asp
Since you don't need communication in both directions and works over http/https

S

s1dney, 2014-09-10
@s1dney

Here is such a wonderful article about push and about pythontyts .

C

CloudMonster, 2014-09-10
@CloudMonster

peerjs.com