sessions and synchronization

[javerra]

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

 

[masseyke]

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.

 

[Thomas Hawtin]

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?

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

Tom Hawtin