Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Today, when I was using Google+ in two separate browsers, I posted something with one browser. The post almost instantly appeared on the second browser (there was maybe 0.5 seconds of delay). How does Google achieve this? Do they constantly send AJax requests to check for new posts? Wouldn’t this put a lot of strain on the server?
There are a variety of methods can be used to do this:
Each one has it’s own caveats and possibilities.
If you’re interested in being able to do a real-time application, you might have a look at socket.io which is a great abstraction library for all of these technologies, so it’ll use the one which is best supported in your browser.