Networking 101 – WAN Optimization

WAN Optimization is a collection of techniques for increasing data transfer efficiencies across wide-area networks (WANs). By enhancing the flow of traffic and reducing its volume, WAN optimization can streamline the process of sending information over vast distances, thus improving communication between different business locations or data centers. Techniques include deduplication, where redundant data is removed; compression, which shrinks the size of the data; caching, where frequently accessed information is stored locally for quick access; and traffic shaping, which prioritizes certain traffic types, ensuring that critical applications have the bandwidth they need.

The handwritten note illustrates a concept of caching, which plays a significant role in WAN optimization. It sketches out a scenario where repeated data requests (“R”) are directed towards a server through a network. Initially, a cold transfer occurs, likely indicating the first request for data which has not yet been cached, thus taking a longer time to retrieve. Subsequent requests result in a warm transfer, where the data retrieval is quicker due to previous caching. Arrows indicate the flow of requests and data, highlighting the interaction between the requester, the cache, and the data server.

Scroll to Top