Q:

Magento site in between getting disconnected , becomes slow.. Why?

Actually my site has so many api's like betaout, flipkart, amazon and so on. Now it has become very big site. I want to increase site speed as well as want to know the reason why it is gettting disconnected and becomes slow.

A:

If your site has many APIs, chances are that it is making many external requests which will undoubtedly slow it down. Additionally, if you are on a shared hosting environment, that almost always slows a Magento site down when there are more that a handful of users on it at one time. 
You should also check your php.ini and .htaccess files and make sure that you have ample memory allocated to your site. 

