Transcript PowerPoint 프레젠테이션

Web Application Server
2001/3/27
Kang, Seungwoo
Web Application Server
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A class of middleware
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Speeding application development
Strategic platform for Web-to-legacy
integration
Links Web, client-server, and host
applications
Ensures optimum application performance
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Three key issues
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Application development environment
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Application integration
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To create new components and integrate
existing ones
To bind heterogeneous, combining legacy
applications and new multi-tier applications
Application deployment
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To effectively scale and offer consistent
performance
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Characteristics
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Manageability
Usability
Scalability
Fault-tolerance
Support for industry standards
Vendors & Products
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HP Bluestone software : Total-e-Server
Oracle : Oracle9i Application Server
BEA : WebLogic Server
IBM : Websphere Application Server
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Bluestone software
Total-e-Server
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Provides a flexible, secure, highly
scalable, and fault-tolerant
infrastructure for all types of e-business
activities
Based on J2EE standards
Total-e-Server Component
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Universal Business Server
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The application server deployment tool
Provides a dynamic, Web-enabled
environment -> scales applications,
balances loads, manages transactions
XML Server
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Provides the ability to dynamically exchange
XML documents externally, or internally
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Universal Listener Framework
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Application Manager
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Monitors server ports to identify the presence
and protocol of an incoming message
Agent-based management component
providing real-time performance and status
information
Security Console
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User, group and role-based access control to
every system level
Total-e-Server
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Application Development
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Java 2 Enterprise Edition
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Enterprise Java Beans (EJB 1.1)
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Open software platform designed to simplify
enterprise application development,
deployment, and integration
Server-side component architecture for the
J2EE Platform
Servlets (Servlet 2.2)
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Server-side applet
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Java Server Pages (JSP 1.1)
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An extension of the Servlet technology
 Easy and quick creation of dynamic Web
pages
 Separates the Web page design from the
business logic
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J2EE Developer
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Development environment to simplify the
management and deployment of EJBs
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Application Deployment
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Application Services
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Provide rapid responses to user interactions,
from simple database queries to complex
business transactions
Load Balancing
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Dynamic load balancing
 Load Balance Broker
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Scalability
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Fault-Tolerance
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Customer-Facing Fault Tolerance
 Ensuring that S/W or H/W system failures or
upgrades don’t adversely affect users
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Fast Fail-over
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Speed-up application recovery
State Management
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Storing State information (session, user
activities)
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Application Integration
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Database Access
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Database Connection Caching
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Supports any JDBC(Type 1, 2, 3, and 4)
datasource
Cached database connections changing
dynamically based on load
Pre-built Connectors
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Components for connecting to disparate
systems
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Communication services
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Allow users to interact with UBS application
server, allow AS to talk to other components
XML Server
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Advanced, XML-based information integration
platform for business-to-business e-commerce,
supply chain integration and thin-client
Internet-enabled device communication
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Management
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Hot Versioning
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Guarantees 24X7X365, non-stop e-business
operations
Internet Quality of Service
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Provides service level differentiation
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Bluestone Application Manager
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Agent-based system for enterprise-level
application integration and management
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Real-Time Monitoring
Report Generation/Trend Analysis
Alarms and Alerts
Customized Statistics
Security Console
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Provides role-based access control at every
level of an e-business application