Distributed (one)--characteristics of distributed systems

A: Introduction

Characteristics of distributed Systems

Concurrent

Lack of global clocks

Fault Independence

Two: examples

Web Search

Massively multiplayer Online games

Financial transactions

Three: Trends in distributed systems

Ubiquitous networking and modern internet

Mobile and Ubiquitous Computing

Distributed multi-media system

Treat distributed computing as a public facility

Four: focus on resource sharing

V: Challenging

Heterogeneous nature

Network, hardware, operating system, programming language

Middleware: Remote object invocation, remote event notification, remote SQL access, Distributed transaction processing

Heterogeneous and Mobile Code

Open

Security

Scalability

Fault Handling

Detecting faults

Masking faults

Fault tolerant

Failure recovery

Redundancy

Concurrency of

Transparency

Access Transparency

Location transparency

Concurrency transparency

Replication transparency

Failure transparency

Mobile transparency

Performance transparency

Telescopic transparency

Quality of Service

VI: World Wide Web

Distributed (one)--characteristics of distributed systems