Optimizing Lucene performance

Question

What are the various ways of optimizing Lucene performance?

Shall I use caching API to store my lucene search query so that I save on the overhead of building the query again?

Answer 1

Have you looked at

Lucene Optimization Tip: Reuse Searcher

Advanced Text Indexing with Lucene

Should an index be optimised after incremental indexes in Lucene?

Answer 2

Quick tips:

• Keep the size of the index small. Eliminate norms, Term vectors when not needed. Set Store flag for a field only if it a must.
• Obvious, but oft-repeated mistake. Create only one instance of Searcher and reuse.
• Keep in the index on fast disks. RAM, if you are paranoid.