Hi all
I read Marty Hall's SCWCD Exam review in SCWCD links in javaranch site
I read the following paragraph in page 15
� Presumably they mean "in a distributed Web app." The
point is that the
servlet context and sessions are
guaranteed to be shared in a Web app running on a
distributed (clustered) server. But, listener instances have
no such guarantee, so they cannot store data in their
instance variables (fields). Same goes for instance
variables of servlets: not safe in distributed apps.
BUT AS I know that
In the case of a web application marked "distributed " in its deployment
descriptor, there will be one context instance for each virtual machine. In
this situation, the context cannot be used as a location to share global
information (because the information won 't be truly global). Use an external
resource like a database instead.
I think the sevlet context can not be shared in clustered environment
please correct me if I am mistaken ?
thanks