Lucene 2.4.0 was released today, important new features are:
- New RAM-based index for much faster searching than with RAMDirectory
- Machine or OS crash while writing will no longer corrupt the whole index
- Delete documents by query with new IndexWriter
- Ability to define a search timeout
- and more…
You can read the detailed changelog here: Lucene Change Log (by the way, like the changelog style!)
