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If you have used i.) to run demo-server before, then use ii.) HENCEFORTH which uses the local databases created in i.).
Tip : Also, if you experience an error related to insufficient memory when running ii.), you might have to stop all java-related processes and run demo-server with the '"Xms2G -Xmx2G" option OR just quickly restart your system altogether.
ii.) `java -Ddemoserver.persistent=true -Dcustom.cassandra.contactPoints=127.0.0.1:9042 -Dcassandra.cluster.user=cassandra -Dcassandra.cluster.pwd=password -Dcustom.mariadb.host=localhost -Dcustom.mariadb.user=root -Dcustom.mariadb.password=mysql -jar demo-server-0.1.0-BUILD-SNAPSHOT.jar`
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