Distributed systems Day 01

Networked architectures can use different kinds of Brokers

1. Object Request Broker (ORB)
2. Service Oriented Architecture (SOA)
1. All software entities are Clients/Service Providers, and they want to work together
3. Peer to peer
1. There is no distinction between Clients and Service Providers
2. All resources are peers-both clients and service providers
3. Peers can advertise their services-directly (via broadcast) or to a "super peer". A super peer is like a "mini-broker". It knows about the services provided by the peers in its cluster/group
4. Grid Computing
5. Cloud Computing
1. Users/enterprises access services over the Internet
2. Some basic services exist in the "Cloud" that is the Internet

Web Browser Processes

• The Client Web Browser has many processes
• User Interface: clicks, mouse, keyboard
• Browser Engine
• Allows user to navigate through Web pages
• Should be platform independent
• Rendering Engine
• Displays documents
• Script Interpreter
• Scripting support for user interaction