Acoustid Index is a "number search engine". It's similar to text search engines, but instead of searching in documents that consist of words, it searches in documents that consist of 32-bit integers.
It's a simple inverted index data structure that doesn't do any kind of processing on the indexed documents. This is useful for searching in Chromaprint audio fingerprints, which are nothing more than 32-bit integer arrays.
Installation:
- Clone repository
- Run "cmake --build . --target install"
Reindexing from the Acoustid database:
$ echo "COPY (SELECT id, acoustid_extract_query(fingerprint) FROM fingerprint) TO stdout DELIMITER '|' " \
| psql -U acoustid acoustid | ./fpi-import -d idx/ -c -o
Running:
$ ./fpi-server
Listening on "127.0.0.1" port 6080
Using Docker:
$ docker run -ti -p 6080 quay.io/acoustid/acoustid-index
$ docker run -ti quay.io/acoustid/acoustid-index fpi-import -d /var/lib/acoustid-index/ -c -o
Simple client session:
$ telnet 127.0.0.1 6080
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
begin
OK
insert 1 368308215,364034037,397576085,397509509,393249669,389054869
OK
insert 2 1574172159,1598222797,1564660173,1564656069,1564537317,1565584741
OK
insert 3 1130316157,1096749341,1075786015,1075655999,1075656047,1079977343
OK
commit
OK
search 1130316157,397509509,393249669,389054869
OK 1:3 3:1
quit
OK
Connection closed by foreign host.