1. Jinyang Li’s Research Distributed Systems Wireless Networks
Peer-to-peer systems
Datacenter storage and computing infrastructures
Challenges: build reliable, flexible and trustworthy systems
Wireless Networks
Multi-hop mesh networks
Challenges: build high-throughput routing protocols

2. WheelFS: a wide-area distributed file system
Goal: simplify application construction by storing app data in WheelFS
Example: A content distributed network (CDN)
If $url exists in cache dir
read $url from WheelFS
else
get page from web server
store page in WheelFS
Apache
Caching
Proxy
Apache
Caching
Proxy
Apache
Caching
Proxy
Apache
Caching
Proxy
wfs
node
wfs
node
wfs
node
wfs
node
CDN can tradeoff availability for consistency
with one line change in Apache config file:
/wfs/cache/.eventualconsistency/