Performance: Solr indexes about 25% faster for small documents (one sentence) Solr indexes about 200% faster for big documents (64kb) Indexing the eZ Components website's article takes 47s with the Solr backend, and 3m20s with the Zend Lucene backened. Missing features in Zend Lucene: No real datatypes support. No multi-valued fields. No proper tokenizers.