Overcoming Active/Passive Node Session State Loss With a Cluster
Although clustering is meant to limit downtime with .NET web-based applications running on IIS, there still is the problem of loosing values stored in the session state.
Basic Terms(the following is taken from http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaspnet/html/asp12282000.asp look here for full details)
A session is defined as the period of time that a unique user interacts with a Web application. Active Server Pages (ASP) developers who wish to retain data for unique user sessions can use an intrinsic feature known as session state.
Programmatically, session state is nothing more than memory in the shape of a dictionary or hash table, e.g. key-value pairs, which can be set and read for the duration of a user's session.
Several options for storing session variable such as:
· SQL Server Mode
· Cookieless State
· In-process Mode
· Out-of-process Mode
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