Tkv is a key-value store written in java, it applies to embedded scene.
- No in memory value cache.
- Every record associated with multi tags, so each tag associated with a record list order by created time.
- support hdfs or local filesystem.
- Read and append only, no update and delete.
File dbFile = new File("/tmp/tkvtest.db");
Tkv tkv = new TkvImpl(dbFile);
String key = "01234567";
String value = "ayellowdog";
//put key-value with tags
tkv.put(key, value.getBytes(), "pet", "dog");
// get value by key
tkv.get(key);
// get record by tag and key
Record r = tkv.getRecord("pet", key);
// navigate in the same tag
Record next = tkv.getRecord("pet", r.getNextKey());
Record privious = tkv.getRecord("pet", r.getPriviousKey());
tkv.close();