I am a PhD student under the supervision of Lorenzo Alvisi in the LASR group (since 2015) where I am kindly funded by a Google Doctoral Fellowship in Distributed Computing and a Doctoral Harrington Fellowship. I will be a visiting student at Cornell in 2016-2017

Previously, I was a student at MPI-SWS under the supervision of Allen Clement and at the University of Cambridge under the supervision of Steven Hand in the Systems Research Group. I also obtained my undergraduate degree in Cambridge.

In the more or less distant past, I interned at INRIA Paris under Gilles Muller in the WHISPER team, at Microsoft Research Redmond with Phil Bernstein in the DMX group (2015), at Imperial College London, with Peter Pietzuch and Eva Kalyvianaki (2012), in the Large-Scale Distributed Systems Group and at the Max Planck Institute for Software Systems in the Dependable Systems Group under the supervision of Rodrigo Rodrigues and Allen Clement (2011). Before that, I worked on the JMEDS Framework for Web Services in Materna GmBH (2010). An even longer time ago, I took the French Bac, Scientific Section (2008).

My CV is available here (Last Updated: February 2017).


My main interests lie in distributed systems, distributed computing and databases. I am specifically interested in looking at consistency in systems for which serializability is not possible/appropriate.


  • Tebaldi: Taking Modular Concurrency Control to the Next Level Paper
    Proceedings of The Special Interest Group on Management of Data 2017 (SIGMOD'2017)
    with Chunzhi Su, Chao Xie, Cong Ding and Lorenzo Alvisi

  • I Can't Believe It's Not Causal: Scalable Causal Consistency with No Slowdown Cascades Paper
    Proceedings of The Symposium on Networked Systems Design and Implementation 2017 (NSDI'2017)
    with Akbar Syed Mehdi, Cody Littley, Lorenzo Alvisi, Nathan Bronson and Wyatt Lloyd

  • Seeing is Believing: A Unified Model for Consistency and Isolation via States Paper
    with Lorenzo Alvisi, Allen Clement and Youer Pu

  • TARDiS: A Branch and Merge Approach to Weak Consistency Paper
    Proceedings of The Special Interest Group on Management of Data 2016 (SIGMOD'2016)
    with Youer Pu, Nancy Estrada, Trinabh Gupta, Lorenzo Alvisi and Allen Clement

  • Geo-Distribution of Actor-Based Services (Work done as part of an internship at Microsoft Research) Paper
    MSR Technical Report (MSR-TR-2017-3)
    with Phil Bernstein, Sebastian Burckhardt, Sergey Bykov, Jose Faleiro, Gabriel Kliot, Alok Kumbhare, Muntasir Raihan Rahman, Vivek Shak, Adriana Szekeres and Jorgen Thelin

  • Scalable and private media consumption with Popcorn Paper
    Proceedings of The Symposium on Networked Systems Design and Implementation 2016 (NSDI'2016)
    with Trinabh Gupta, Whitney Mulhern, Lorenzo Alvisi and Michael Walfish

  • Musketeer, All for One and One for All Data Processing Systems Paper
    Proceedings of The European Conference on Computer Systems 2015 (Eurosys'2015)
    with Ionel Gog, Malte Schwarzkopf, Matthew Grosvenor, Allen Clement and Steven Hand

Workshops & Posters

  • Towards a Consistent Understanding of Consistency Levels 8th Workshop on Large-Scale Distributed Systems and Middleware (LADIS'14)
    with Henrique Moniz, Ricardo Dias, João Leitão, Lorenzo Alvizi, Allen Clement and Rodrigo Rodrigues

  • TARDiS, Transactional Storage with Parallel Worlds (Poster) Poster
    Operating Systems Design and Implementation 2014 (OSDI'2014)
    with Nancy Estrada and Allen Clement

  • StreamShell, Secure Stream Processing (Poster) Poster (Work done as part of an internship at Imperial)
    The European Conference on Computer Systems 2013 (Eurosys'2013)
    with Eva Kalyvianaki and Peter Pietzuch


I have been a teaching assistant/supervisor for the following courses:


Drop me an email if you'd like to chat

Email: ncrooks at cs dot utexas dot edu