index.md 65 lines (55 with data), 1.9 kB
| MapDB provides concurrent TreeMap and HashMap backed by disk storage or off-heap memory. It is a fast, scalable and easy to use embedded Java database engine. It is tiny (160KB jar), yet packed with features such as transactions, space efficient serialization, instance cache and transparent compression/encryption. It also has outstanding performance rivaled only by native embedded db engines. |
What people are saying |
News30/1/2013 MapDB overview video |
|
Hello world
import org.mapdb.*;
//Configure and open database using builder pattern.
DB db = DBMaker
.newFileDB(new File("testdb"))
.closeOnJvmShutdown()
.make();
//create new collection (or open existing)
ConcurrentNavigableMap map = db.getTreeMap("collectionName");
map.put(1,"one");
map.put(2,"two");
//persist changes into disk, there is also rollback() method
db.commit();
db.close();
|
|