Php Server Push-php Tutorial

Source: Internet
Author: User
Php server push problems. Now I am going to make a chat. I have read it online and I want to use the push technology. But don't understand. Ajax round-robin is very inefficient... ------ Solution -------------------- discuss the amount... I always think that if ajax is used for long polling, the server is under great pressure. If there are more users .. ------ Solution ------------------ ajax round-robin php server push problems when there are few people.
Now I am going to make a chat. I have read it online and I want to use the push technology.
But don't understand. Ajax round-robin is very inefficient...

------ Solution --------------------
Discussion
Amount... I always think that if ajax is used for long polling, the server is under great pressure.
If there are more users ..

------ Solution --------------------
When there are few people, ajax rounds are a waste of resources, and no new chat information is found.
When there are many people, comet creates many persistent connections, which is a bit difficult to handle, mainly because of the optimization on the server side.



Here is a simple example ...... Just talk about the principle ......
The front end is a normal ajax, and the back end is an endless loop

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