My board has a very large postgreSQL database. We have recently changed to the Sphinx search backend due to problems and limitations with the postgreSQL and phpBB native search backends.
However, we are concerned over Sphinx long-term support. The source code is proprietary and is no longer maintained. It has been nearly two years since the last release.
Can an Elasticsearch search backend be added into core? Elasticsearch is open-source, popular, and well-supported.
I have started a topic in the development forum to discuss the technical details. See:
Feature Request – Incorporate Elasticsearch search backend into core