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SendRidirect vs RequestDispatcher

 
Greenhorn
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Tell me the difference between response.sendRedirect and requestDispatcher.forward with respect to session?
 
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With respect to session, there is little difference between the two.

In general, they are very different.
requestDispatcher.forward takes place on the server, within one request cycle.
The client (browser) has no idea that this has taken place.

response.sendRedirect works by sending a 302 header (along with a Location header), suggesting that the browser make a brand new request.
 
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The client (browser) has no idea that this has taken place.



you can notice, in browser URL bar, URL will not change while you are doing forward but if you do redirect you can see that changing.
 
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