Lock-free session state module for ASP.NET

This module is a work-around for ASP.NET session lock. It allows to execute slow requests in parallel. Each request can use a session state in read/write mode.

It may be not safe, but can help you enhance site performance if other solutions are not available.

BTW, the best solution is to use read-only session state on all pages except the authentication.

Discussion: http://stackoverflow.com/a/25231036/991267

Usage

HashTable module

Uses Hashtable-based implementation from MSDN.

• Install the package.

  Install-Package Heavysoft.LockFreeSessionState.HashTable
  

• These lines will be added to web.config:

    <system.webServer>
      <modules>
        <remove name="Session" />
        <add name="Session" type="Heavysoft.Web.SessionState.HashTableSessionStateModule,Heavysoft.LockFreeSessionState.HashTable,PublicKeyToken=12eed1a4d3dc558d" />      
      </modules>
    </system.webServer>

• Lock-free session module will be loaded instead of the standard ASP.NET SessionStateModule.

https://www.nuget.org/packages/Heavysoft.LockFreeSessionState.HashTable/

SOSS module

Uses ScaleOut StateServer software.

Install-Package Heavysoft.LockFreeSessionState.Soss
Update-Package Heavysoft.LockFreeSessionState.Common

https://www.nuget.org/packages/Heavysoft.LockFreeSessionState.Soss/

Custom storage

• Install the common package.

  Install-Package Heavysoft.LockFreeSessionState.Common
  

• Inherit the LockFreeSessionStateModule class. Implement abstract methods.

https://www.nuget.org/packages/Heavysoft.LockFreeSessionState.Common/