Details in the Textbook
Distributed web-based systems
Document based to service based
See Figure 12-3 for more details!
We can build distributed applications using the Web!
See Figure 12-4 for more details!
Prefetching by the Web server
Why not assume the use of UDP?
Can you find a live URL using these?
400: Bad request
404: Not found
Can you find a live URL returning one of these?
See Figure 12-14 for more details
Uniform resource locators
See figure 12-16 for more details
Lock, create, delete, copy, move when synchronized
When would you need synchronization in Web servers?
Consistency and replication in web-based systems
Cooperative (distributed) caching
Content delivery networks
Examples of CDN providers?
Security in web-based systems
Can you find a secure Web site?
Where does TLS fit in the protocol stack?
See Figure 12-22 for more details
Any questions about web-based systems?