Slides for Chapter 2: Architectural ModelsFrom Coulouris, Dollimore and Kindberg Distributed Systems: Concepts and DesignEdition 4, Pearson Education 2005

Figure 2.1Software and hardware service layers in distributed systems

Figure 2.2Clients invoke individual servers

Figure 2.3A distributed application based on peer processes

Figure 2.4A service provided by multiple servers

Figure 2.5Web proxy server

Figure 2.6Web applets

Figure 2.7Thin clients and compute serversThinClientApplicationProcessNetwork computer or PCCompute servernetwork

Figure 2.8Real-time ordering of events

Figure 2.9Processes and channels

Figure 2.10Omission and arbitrary failures

Figure 2.11Timing failures

Figure 2.12Objects and principals

Figure 2.13The enemy

Figure 2.14Secure channelsPrincipal ASecure channelProcess pProcess qPrincipal B