Using Apache Solr as your search solution
HCL Commerce Versions 7 and 8, 9.0.0 and Commerce on Cloud used Apache Solr as their standard search engine. Starting in Version 9.1.0, Elsaticsearch is the default, however you can still use Solr.
Deploying Apache Solr in Version 9.1.0.0+ environments
If you choose to deploy Apache Solr in your prduction environments, follow the instructions in Deploying HCL Commerce Version 9.1 with Solr-based search and an IBM Db2 database using Docker Compose, for Db2 environments, or Deploying HCL Commerce Version 9.1 with Solr-based search and an Oracle database using Docker Compose if you are using Oracle.
Elasticsearch is the default Developer Legacy environment in HCL Commerce Versions 9.1.0 and beyond. If you would like to develop for the Solr engine instead, you can revert back to it. For more information, see Configuring your HCL Commerce Developer Legacy environment for use with the Solr-based search solution.