size of data stored in a session object and caching

[vishwanath nadimpally]

I know this might sound stupid, but is there a size limit on the amount of data that can be stored in a HttpSession object?

I am trying to cache some data for an application that I am using.I am not running an application server, just tomcat 5.5.12. This application uses GIS (Geographical Information System) maps which will be associated with a users location.Each image is about 250x400. Also these maps may be used for subsequent access. These maps reside inside a legacy system(server).

What is the best strategy to cache these maps on to a jsp/servlet framework?

[Rahul Bhattacharjee]

I think it has been answered in some of the old posts.
Objects always goes to the heap.so it depends on the heap space available to the JVM no matter whereever you store.

[William Brogden]

size limit on the amount of data that can be stored in a HttpSession object

Please remember that a session stores a reference to an object, NOT the object itself. How this affects memory limits depends on all the users of the object.
Note that servlet containers are allowed to serialize a session to disk whenever they want - a serialized session WILL contain the serialized object so the object must be Serializable.

Bill