Using redis as session

Question

I m new to redis sessions

 

<sessionState mode="Custom" customProvider="FooFoo">

<providers>

<add name="MySessionStateStore" type="Microsoft.Web.Redis.RedisSessionStateProvider" host="something.redis.cache.windows.net:1234" accessKey="" ssl="true" abortConnect="False" />

</providers>

</sessionState>

 

I have add dis to web config but still

 

session["key"] = "value"

 

is not working on azure

 

How to implement this session on azure??