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Locking Revisited

Like application variables, session variables are kept in the server's RAM. This means that the same types of race-condition problems can occur if session variables are being read and accessed by two different page requests at the same time. (See the section “Using Locks to Protect Against Race Conditions” in Chapter 16.)

→ If you haven't yet read “Preventing Memory Corruption with Locking” in Chapter 16, please take a look at that section before you continue.


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