hellsten + hash   4

Consistent Hash Rings Explained Simply
- you may want to take a URL and get back the server the website is hosted on.

- The problem of mimicking a hash table when the number of locations are constantly changing was exactly why consistent hashing was invented.

- For 2,000 keys spread across 100 locations, you now need to move only 20 keys to a new location if 1 location with only 20 keys goes down.

- This is the main benefit of consistent hashing: you now no longer need to move so many things just because one location has disappea...
algorithms  algorithm  distributed  consistent-hash  hash  cs 
january 2019 by hellsten
pHash.org: Home of pHash, the open source perceptual hash library
Potential applications include copyright protection, similarity search for media files, or even digital forensics. For example, YouTube could maintain a database of hashes that have been submitted by the major movie producers of movies to which they hold the copyright. If a user then uploads the same video to YouTube, the hash will be almost identical, and it can be flagged as a possible copyright violation. The audio hash could be used to automatically tag MP3 files with proper ID3 information, while the text hash could be used for plagiarism detection.
photos  photo  duplicate  duplication  copyright  image  hash  library  audio  video  hashing  totry 
june 2010 by hellsten

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