sessions and synchronization

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javerra - 20 Mar 2006 20:27 GMT

hoping someone can set me straight on this. When exactly would you
find a need to synchronize a method that accesses a session attribute?
When would a session attribute not be thread safe? If each session is
unique with unique attirbutes how are these attibutes not thread safe?

Thanks gurus

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masseyke - 20 Mar 2006 20:47 GMT

> hoping someone can set me straight on this. When exactly would you
> find a need to synchronize a method that accesses a session attribute?
> When would a session attribute not be thread safe? If each session is
> unique with unique attirbutes how are these attibutes not thread safe?

One way is if the person browsing your website opens a new browser
window using ctrl-N in Internet Explorer. In that case, both the
original window and the new window will share the original session, and
it's fairly easy for those two browser windows to simultaneously submit
a request.

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Thomas Hawtin - 20 Mar 2006 22:33 GMT

Given that sessions can be distributed over a number of JVMs,
"synchronize" isn't going to help you.

Tom Hawtin

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Unemployed English Java programmer
http://jroller.com/page/tackline/

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sessions and synchronization

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