javascript - What is AJAX HeartBeat and what is the difference between it and setInterval - Stack Overflow

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I want to know what is exactly AJAX heartbeat pattern and what is the difference between it and jquery setInterval

Because im making an AJAX chat and I don't want to pull the data every 15 seconds I want to make a connection to the server to avoid delay is that what called heartbeat ? Also I want a good tutorial to make this or any suggestion from you

Note: I have pleted the implementation with setInterval but I saw that heartbeat is better way to avoid delay

I want to know what is exactly AJAX heartbeat pattern and what is the difference between it and jquery setInterval

Because im making an AJAX chat and I don't want to pull the data every 15 seconds I want to make a connection to the server to avoid delay is that what called heartbeat ? Also I want a good tutorial to make this or any suggestion from you

Note: I have pleted the implementation with setInterval but I saw that heartbeat is better way to avoid delay

• javascript
• ajax
• jquery
• setinterval
• heartbeat

Share Improve this question Follow edited Nov 14, 2011 at 13:54 Smamatti 3,93133 gold badges3333 silver badges4444 bronze badges asked Nov 14, 2011 at 13:31 SederSeder 2,76322 gold badges2424 silver badges4343 bronze badges 3

• Afaik this is a design pattern and not a function. You keep sending requests to the server, so the server knows the user/browser is still present. - First hits on google... – Smamatti Commented Nov 14, 2011 at 13:38
• In my question in the first line i asked what is AJAX heartbeat pattern and i said its pattern I am hitting google since two days and I came here because here i can see experts that already done this before and can give me the concept better not punishing me for my question anyway thank you for your help I will appreciate reading the question first and consider that I will not ask here until i am out of solutions – Seder Commented Nov 14, 2011 at 13:43
• It's a deisgn pattern and not a function. You knew that, ok. I downvoted this question, because I don't see the research effort in it since the first result on google explain the pattern. - I may decided to harsh. Fixed it. Please state the next time your research effort more clear. – Smamatti Commented Nov 14, 2011 at 13:55

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Sorted by: Reset to default 7

Heartbeat is a design pattern, this means it's a way of coding solutions.

Here a technique is meant, where you keep sending requests to the server, so the server knows the user/browser is still present. There are several use-cases for this pattern, for example to prevent timeouts of sessions etc.

You cannot really pare a design pattern to a function, because setInterval could be used to implement this pattern. You would keep sending request in a specified interval.

I don't have a tutorial at hand, but the first hits on google already contain some examples.

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