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Overuse of Session variables

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Hi guys,

 

I have been developing a web-application and I am using a lot of session variables.. I have certain doubts on using them

 

  • When N number of users loggin so, N number of session variables are created.. does it affect the performance of the site ?
  • Does using session variable pose any security issues ?
  • Is there any other alternative for session varibles ?

 

Thank you in advance !!


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