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Greg Burri, 01/19/2009 11:21 AM
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 with Protocol Buffers in Haskell. see http://hackage.haskell.org/cgi-bin/hackage-scripts/package/protocol-buffers.
- Reading and writing files with UTF8 characters in theirs filename.
- 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.
Updated by Greg Burri over 15 years ago · 16 revisions