how sessions are identified on multiple web servers?

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dear friends,

any one guide me if i have hosted asp.net website on two web servers let suppose

1) server A
2) server B

first time request of a user is responded by Server A

Next time same user request is responded by Server B.

so in such a situation how asp.net sessions are uniquely identified by web servers?

any help would be appreciated.

Posted 1-Jan-11 1:27am

mr_muskurahat

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Shani Natav · Answer 1 · 2011-01-01T01:47:00

Solution 1

You have two options:

1) Session In Process, each server keeps the session state in the ASP.NET Process) with Session Affinity - All requests with the same session ID are handled by the same server.

2) Session out of process - Session is handled by a session server, could be sql server or any other implementation, can be slower but it's a good scalable solution.

Posted 1-Jan-11 1:47am

Shani Natav

Comments

Manfred Rudolf Bihy 1-Jan-11 12:02pm

Exactly what I would have proposed.
Good call! 5+

mr_muskurahat 2-Jan-11 2:29am

so in multiple web server case as i discussed above inproc mode will not be used?

and out proc will be used right?

and asp.net manages unique identification at web server level its self?

Shani Natav 2-Jan-11 3:47am

Out proc is the way the go, the session ID is created per web server, but gets attached as cookie to all following requests, so it won't matter what server handles all the requests from the same session, the Session ID will be the same.