• VM-Echoprint
  • Setup
    • Minimal
  • Services
  • Specifications

VM-Echoprint¶

Setup¶

Minimal¶

• 1 VM-Echoprint in M-Web

Services¶

• Apache Web Server
  • https://httpd.apache.org
• Echoprint Query Server
  • https://github.com/echonest/echoprint-server
• Echoprint Index Services
  • http://lucene.apache.org/solr
  • http://fallabs.com/kyotocabinet
  • http://fallabs.com/tokyotyrant

Specifications¶

• Tokyo Cabinet is a key value store.
• Tokyo Tyrant is the network interface of Tokyo Cabinet, e.g. for managing asynchronous access.
• Apache Solr is a search platform used in the EchoPrint server to perform full-text like searches for fingerprint codes.
• The EchoPrint web api is based on some python scripts, running under Django. Most notable api.py to receive the urls and urlencoded parameters or postdata json and decode/unzip it. And there is fp.py to connect to Solr and do all the fingerprint indexing stuff. Fingerprints are stored in 1 minute sections, each overlapping by 30 seconds with the track id with '-' and the section number as key. The fingerprints are stored in ascii representation as numbers (onset times and hashes).