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Java Servlets and JavaServer Pages extensions enable all Java servlet and
JavaServer page meta-functions, including instantiation, initialization, destruction,
access from other components, and configuration management. Java servlets and
JavaServer pages are reusable Java applications that run on a web server rather
than in a web browser.
Runtime Environments
In addition to the various server extensions, Enterprise Server includes a set of
runtime environments which support the server extensions. These runtime
environments include the following:
•
CGI Processor
•
NSAPI Engine
•
Java Virtual Machine (JVM)
•
Parsed HTML (Server-Side Includes)
Application Services
Finally, the Enterprise Server architecture includes a set of application services for
various application-specific functions. These application services include the
following:
•
Security & Access Control
•
Session Management Service
•
File System Service
Enterprise Server Configuration
Enterprise Server is configured to enable you to turn on or off various features,
determine how to respond to individual client requests, and write programs that
run on and interact with the server's operation. The instructions (called directives)
which identify these options are stored in configuration files. Enterprise Server
reads the configuration files on startup and during client requests to map your
choices with the desired server activity. For more information about these files, see
"Enterprise Server Configuration Files," on page 30.
Enterprise Server Configuration
Chapter 1
Introduction to Enterprise Server
29
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