Content Caching
Basic idea: Store other people’s Web data closer to your users
- Install a content engine (aka, cache engine) close to your Internet connection
- Install special content management software on the router
Operations
- Stores requests and responses (mostly static files)
- Examines each outgoing request; if it requires a file already in cache, it responds immediately (without going to the requested site)
Stores contents form most commonly accessed sites (updates them frequently)
Must operate at wire speeds (otherwise degrade performance)
Reduces traffic between Internet and Organization ? less circuits to lease