Prototypes » History » Revision 15
Revision 14 (Greg Burri, 12/12/2008 05:11 PM) → Revision 15/49 (Greg Burri, 12/21/2008 08:55 PM)
h1. Prototypes Prototypes are locate in the '/prototypes' directory in the repository. The goal is to write some code to try to resolve a particular problem which we don't know exactly how to solve. # Creating SHA-1 hash for each part of a file. See [[Libraries]] for the list of SHA-1 lib. We must find the quickest library. The reference in term of speed is _sha1sum_ from the openssl package. The speed is approximately 150Mo/s for a cached file for an Intel 1.8 GHz Core2 CPU. # Observing the modifications of the files structure to hash new added files and remove hash from the cache when a file is deleted. # Multicast UDP. # Serializing and exchanging message Protocol Buffers with _Protocol Buffers_ in Haskell. see http://hackage.haskell.org/cgi-bin/hackage-scripts/package/protocol-buffers. # Reading of filename with UTF8 characters. # Defining and testing the concurrent model. # Reading and writing the same file from different threads. # Efficient of the file transfer over TCP/IP with Haskell. It includes reading, streaming and writing. Comparisons with SMB and NFS.