Migrating to Web Services - Latency and Scalability.
A common way of deploying Web Services is to create a
proxy that exposes the legacy application as a web service. But when it
comes to performance, web services are facing the same barrage of distrust
as any new middleware. Are the critics of Web Services right? In
this paper we will look at several performance pitfalls that web
services are facing today and to the performance penalties that has to be
paid when exposing a legacy application as a web service. We show
results about the latency and scalability of Apache's implementation of
SOAP, compare it with the performance of established middleware such as
CORBA or RMI, and look at end to end performance of Web Services build on
top an existing EJB application.