Client server architecture
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The document discusses the client-server architecture, including its definition, timeline, types of servers, tiers, protocols, and future directions. The client-server model involves clients sending requests to servers which process and return responses. It has evolved from mainframe computers to today's multi-tier architectures with web, application, and database servers. Protocols like HTTP, TCP/IP, and FTP are used to facilitate communication between clients and servers. Cloud computing is presented as the future direction rather than traditional client-server systems.
Client server architecture
- 1. Client Server Architecture 29/10/2011 Becky Pateman 1
- 2. Definition The term ‘Client-Server’ refers to the Network Architecture. where one or more computers are connected a server. That one computer (the Client) or more sends a service request to another computer (the Server). 29/10/2011 Becky Pateman 2
- 3. Timeline Mainframes • 1st Generation The tube-based mainframes computers • 2nd Generation Transistor computers systems • 3rd Generation Multi-processing and OS make the scene 29/10/2011 Becky Pateman 3
- 4. Timeline 1980s Client-Server Network 1990 Intro of Web related Protocols 1990HTML (Hypertext Mark-up Language) 1991 Web Server 2001 Blade Server 2008Cluster Application 29/10/2011 Becky Pateman 4
- 5. Servers Mainframes • One Tier • Talks directly to the mainframe File Server • Thick Client • No hard-disk • Network dependant • One-tier architecture 29/10/2011 Becky Pateman 5
- 6. Servers Web Server • Thin Client • Hard ware based • Network based • Two-tier architecture • Uses HTTP protocols Application Server • LAN (Local Access Network) • Backbone • Cluster • Provides services within the webpage • Provides online documents • E.g. Hotmail, Google and Yahoo 29/10/2011 Becky Pateman 6
- 7. Servers Database Server Referred to as ‘The back-end system’ • Performs tasks such as data analysis, storage, data manipulation, archiving 29/10/2011 Becky Pateman 7
- 8. Blade Servers • Thinner client • Super Computer • Accessed virtually… • VmWare software Remote • Enables Network Administrators to access the network without physically being in the same location of the network. • VmWare • Remote Desktop Connections 29/10/2011 Becky Pateman 8
- 9. Tiers 29/10/2011 Becky Pateman 9
- 10. Client-Server Architecture • Web Server • Protocols • Application Server • PC LAN application • Database Server • 3 tier structure 29/10/2011 Becky Pateman 10
- 11. Present Status • 3-tier/N-tier Client -Server System 3-tier • Web Browser, Web Server, Application Server N-tier Architecture • Funnel database connections • Partition the application processing load mango many servers. • Multi-tier is used to describe architectures with multiple layer or types of middleware. 29/10/2011 Becky Pateman 11
- 12. Industry Standards: • FTP Protocols (File Transfer Protocol) • TCP/IP (Transport Control Protocol/Internet Protocol) • IP (Internet Protocol) OSI Model TCP/IP Model Presentation Layer Application Layer FTP Session Layer Transport Layer Transport TCP Network Layer Internet IP Data Link Layer Ethernet Physical Layer Netowrk Interface 29/10/2011 Becky Pateman 12
- 13. Industry Standards: Protocols Web Browser Protocols • HTTP (Hypertext transport protocol) Is the domain of the website E.g. http://www.whitrieia.ac.nz • URL (Universal Resource Locator) Is the Website of the address. www.whitrieia.ac.nz • HTML (Hypertext Mark-up Language) Mark-Up Language for Web Pages on the World Wide Web 29/10/2011 Becky Pateman 13
- 14. Industry Standards: Protocols Email Protocols • STMP (Simple Mail Transfer Protocol) Is a protocol for sending email messages between the Servers. STMP sends the message • POP (Post Office Protocol) Email Client POP retrieves the message 29/10/2011 Becky Pateman 14
- 15. Cloud Computing Is not our friend in Client- Server Architecture World! 29/10/2011 Becky Pateman 15
- 16. Future Direction Cloud Computing • Virtual World • Stable structure • Secure • Subscription based Client-Server Architecture is flexible and adaptable Blade Server • The Blade is able to contain big number of users in work group • The Blade Server is powerful! 29/10/2011 Becky Pateman 16
Editor's Notes
- #4: 1500 Leonardo da Vinci designs a mechanical calculator.
- #5: HTTP, HTML, SMTP, POP
- #7: Thick client has it own hard ware in the pcs, thin client relys on the network of all resources and safe to the network not the pc Provides services within the HTTP domain (page) e.ggoogle doc’s
- #8: Relational Data Management System
- #11: LAN – local access network – protocols HTTP, URL and
- #13: Transport layer host to host