Prof. Dr. Adrian Perrig

@InProceedings{TKSKBP2003,
    author =       {Niraj Tolia and Michael Kozuch and Mahadev Satyanarayanan and Brad Karp and Thomas Bressoud and Adrian Perrig},
    title =        {Opportunistic Use of Content Addressable Storage for Distributed File Systems},
    url = {/publications/papers/usenix03.pdf},
    booktitle =    {Proceedings of the USENIX Annual Technical Conference (USENIX ATC)},
    year =         2003,
    month =        jun,
    abstract =     {Motivated by the prospect of readily available
                  Content Addressable Storage (CAS), we introduce the
                  concept of file recipes. A file's recipe is a
                  first-class file system object listing content
                  hashes that describe the data blocks composing the
                  file. File recipes provide applications with
                  instructions for reconstructing the original file
                  from available CAS data blocks. We describe one such
                  application of recipes, the CASPER distributed file
                  system. A CASPER client opportunistically fetches
                  blocks from nearby CAS providers to improve its
                  performance when the connection to a file server
                  traverses a low-bandwidth path. We use measurements
                  of our prototype to evaluate its performance under
                  varying network conditions. Our results demonstrate
                  significant improvements in execution times of
                  applications that use a network file system. We
                  conclude by describing fuzzy block matching, a
                  promising technique for using approximately matching
                  blocks on CAS providers to reconstitute the exact
                  desired contents of a file at a client.}
}