title: Indexing into MeiliSearch - Apache Solr - ElasticSearch
body: <p>I am doing a technical study for three indexing engines (MeiliSearch - Apache Solr - ElasticSearch), and I have a different behavior when indexing in each of these engines, MeiliSearch indexes only 1017 documents out of 50,000, Apache Solr indexes only 800 documents, and Elastic does not idexe anything.
  Can you help me understand what's going on, and suggest solutions like changing the configuration or whatever.</p>
  <p>I know that it may be due to resource consumption, so don't hesitate to suggest hardware configurations that must be to index these 50,000 documents which are PDF docs.</p>
  <p>thank you in advance.</p>