5 ms·

I'm happy to answer any questions about this article or the implementation I've put together.

• lisper 11y ago
  You say you've been working on your CAS system for two years. What are the challenges you are facing that is making it take that long? Because a simple CAS is trivial: just hash the file, rename it to the hash, and serve it up via a normal HTTP server. What is making it hard?
  • btrask 11y ago
    Here's what I've written up for a toy content addressing system I've been writing in Python: "If it's so easy, why did it take us 3 years and 10,000 lines?" "Because we wrote it in C." And because the real system: - Tracks file meta-data (including tags and full-text indexing) - Has a way to find files/hashes without file or hash (search) - Uses a database instead of hardlinks everywhere - Supports hash algorithm plugins (not technically done yet) - Supports more hash formats (short, base-64, etc.) - Is ACID (and coordinates transactions between DB and file system) - Supports multiple repos per user (at arbitrary paths) - Handles hash collisions (aside from the primary hash) - Has a basic user interface - Has a sync protocol