Suppose an application is deployed at more than one server. The request is being handled by one server and suddenly server crashes. now the request from that particular client should be routed to another server. And the user should not be asked to enter his login credentials, which will be handled by session.But my problem is -- A servlet has set an attribute in the serveltContext. As per my knowledge, there exists only one servletContext per one JVM. how that attribute set by the servlet at first server is made available at the second server.