My graduate research centered on Distributed Hash Tables, which was quite a hot field for a time. The graph below shows citations of one of our first Chord papers by year:

I'm no longer actively pursuing research into DHTs, but am happy to answer questions about the work or the various bits of code that we produced.

Efficient Replica Maintenance for Distributed Storage Systems Byung-Gon Chun, Frank Dabek, Andreas Haeberlen, Emil Sit, Hakim Weatherspoon, Frans Kaashoek, John Kubiatowicz, Robert Morris NSDI
A Distributed Hash Table (pdf) Frank Dabek PhD. Thesis (MIT)
Vivaldi: A Decentralized Network Coordinate System Frank Dabek, Russ Cox, Frans Kaashoek, Robert Morris SIGCOMM
UsenetDHT: a Low Overhead Usenet Server(pdf) Emil Sit, Frank Dabek, James Robertson IPTPS
Designing a DHT for Low Latency and High Throughput Frank Dabek, Jinyang Li, Emil Sit, Frans Kaashoek, Robert Morris NSDI
Bankable Postage for Network Services(pdf) Martin Abadi, Andrew Birrell, Michael Burrows, Frank Dabek, Ted Wobber ASIAN
Practical Distributed Network Coordinates Russ Cox, Frank Dabek, Frans Kaashoek, Jinyang Li, Robert Morris HotNets
Multiprocessor Support for Event-Driven Programs Nickolai Zeldovich, Alexander Yip, Frank Dabek, Robert Morris, David Mazieres, Frans Kaashoek USENIX
Towards a Common API for Structured Peer-to-Peer Overlays Frank Dabek, Ben Zhao, Peter Druschel, John Kubiatowicz, and Ion Stoica IPTPS
Chord: A Scalable Peer-to-peer Lookup Service for Internet Applications Ion Stoica, Robert Morris, David Liben-Nowell, David Karger, Frans Kaashoek, Frank Dabek, and Hari Balakrishnan Transactions on Networking
Event-driven programming for robust software Frank Dabek, Nickolai Zeldovich, Frans Kaashoek, David Mazieres, and Robert Morris SIGOPS European Workshop
Wide-area cooperative storage with CFS Frank Dabek, Frans Kaashoek, David Karger, Robert Morris, and Ion Stoica< SOSP
Building Peer-to-Peer Systems With Chord, a Distributed Lookup Service Frank Dabek, Emma Brunskill, Frans Kaashoek, David Karger, Robert Morris, Ion Stoica, and Hari Balakrishnan HotOS