Spotfire Server is a Java application, based on Apache Tomcat servlet container. For Spotfire Server, secure connections would use the Java auth plugin, placed in the webapps/spotfire/lib directory of the Tomcat home directory. Use of the java auth plugin is triggered by specifying the proper authentication mechanism in the JDBC connection string

jdbc:mysql://127.0.0.1:3307?useSSL=false&authenticationPlugins=org.mongodb.mongosql.auth.plugin.MongoSqlAuthenticationPlugin