89-211 ADV PROGRAMMING

L4

Dudi Landau, CTO CLearForest

Agenda

Application Servers

More than basics

Alternatives

AJAX

ASP.NET, IIS Arch /1

ASP.NET, IIS Arch /2

1. When a client browser initiates an HTTP

request for a resource on the Web

server, HTTP.sys intercepts the request.

2. HTTP.sys contacts WAS to obtain

information from the configuration store.

3. WAS requests configuration information

from the configuration store,

applicationHost.config.

4. WWW Service receives configuration

information, such as application pool

and site configuration.

5. WWW Service uses the configuration

information to configure HTTP.sys.

6. WAS starts a worker process for the

application pool to which the request

was made.

7. The worker process processes the

request and returns a response to

HTTP.sys.

8. The client receives a response.

ASP.NET, IIS Arch /3

http://learn.iis.net/file.axd?i=16

ASP.NET, IIS Arch /4 (classic/old model)

ASP.NET, IIS Arch /5 (new model)

http://learn.iis.net/file.axd?i=152

IIS7 configurable stack

IIS7 and Apache

similar configurable stack

Each “site” as a directory

tree with its configuration

XML

IIS7 configuration view

J EE App Server

any

http

server

Browser

Containers

EJB Server

Data

JDBC

App Server

Entity

Bean

HOME

REMOTE

Device

HTTP

JVM

HTML, XML

any OS

Servlet

or

JSP

Session

Bean

Context

Security

Transactions

Concurrency

JSP/ Servlet flow

JSP Model -1

JSP Model 2 (MVC)

J EE Server - vocabulary

Servlet

JSP

WAR

EJB,EAR

Frameworks JFC, Spring Webflow, (and also

Tapestry, Apache Struts)

Demos

Alternatives

From scratch using PHP (and others)

CMS publishing (Wordpress,Drupal, Joomla!, Daisy,

Alfresco, Plone)

RoR (Ruby on Rails)

Grails (RoR like done with Groovy based on Java stack)

Django (Python based)

The good/bad & performance

AJAX & Client side control

How is Client Side Control different

GWT (Google Web Toolkit)

AJAX (Asynchronous Javascript and XML)

AJAX confusion

(True) Client Side Control AJAX

vs

Server Side Control using AJAX

The major question is who runs the show.

Follow-ups

HTML, HTTP & Web Servers

IIS, Apache

J EE

ASP.NET