Embedded Java key-value storage

java nosql key-value-store
andrew.z picture andrew.z · Mar 4, 2013 · Viewed 7.2k times · Source

I'm looking for a persistent key-value storage to use in my application. Specifically:

  1. It must be embeddable into Java application. Pure Java solution would be the best.
  2. Data must be persisted on disk, in-memory-only storage is not an option. Memory footprint size is important and overall size of key-value map can be quite large. Ideally I'd like to have some kind of LRU cache implemented over the storage.
  3. Both keys & values are strings (don't need to support Java object serialization, etc).
  4. Concurrent reads/writes are important.

What would be the best option in such case?

Answer

Henrik Aasted Sørensen picture Henrik Aasted Sørensen · Mar 4, 2013

OrientDB (SO info page) seems to fit the bill.

The documentation is occasionally a bit lacking, but I belive it fulfills the criteria you are listing.

Related questions

Looking for a lightweight java-compatible in-memory key-value store

Berkeley DB would be the best choice probably but I can't use it due to licensing issues. Are there any alternatives?

Read More
HBase standalone failed to connect (fail to create table)

I am trying to deploy Hbase in standalone mode following this article: http://hbase.apache.org/book.html#quickstart. The version is 0.92.1-cdh4.1.2 But I am getting these errors when try to create a table: Error message: 13/04/01 14:07:10 ERROR zookeeper.RecoverableZooKeeper: …

Read More
Which embedded DB written in Java for a simple key/value store?

I recently asked a question about Neo4j, which I got working and which seems nice. It's embeddable and it's written in Java and there aren't (too) many dependencies. However it's a graph DB and I don't know if it's …

Read More