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The current connectors for Discovery represent a wide variety of sources, including:
MongoDB Atlas Connector – data from an existing MongoDB Atlas database
URL Connector – to download content from specific URLs
Website Connector – to crawl a website or group of websites based on a starting URL
Azure Blob Connector – data from Microsoft Azure Blog Storage
RDBMS Connector – data from relational databases (via JDBC)
S3 Connector – data from Amazon S3
Udemy Connector – data from the Udemy online course director
Elasticsearch Connector – data from any index or indexes stored in Elasticsearch
OpenSearch Connector – data from an existing OpenSearch index
LinkedIn Learning connector – via 3rd Party
In addition, Discovery has special connectors for development purposes:
Random Generator Connector – to create random data for scalability and performance testing purposes
Apache Solr Connector – on customer request
Connectors for ingesting data from existing search engine indices are useful in cases of migration from one search engine to another, or for enriching an existing index without having to recreate the index from scratch.