The role of user analytics in edge caching: Lessons from BBC iPlayer

It is nearly always 'good' to cache, but storage is typically limited at the edge, so deciding what gets cached can make or break edge-caching. Using traces of 1.2 Billion accesses to BBC iPlayer, the second largest application on UK's Internet, this talk demonstrates how understanding user access patterns is crucial to realising the benefits of edge caching. This is based on two papers in IEEE INFOCOM 2015, a paper to appear in IEEE/ACM Transactions on Networking, and ongoing work.