Yes, we were streaming for 24h about Liferay DXP and Liferay Portal 7.3 (and previous versions). All kinds of technical information that might be of interest for you. You might have missed it, but luckily we have it all recorded - and the recordings are available for you:
Learn how to quickly detect errors by monitoring Liferay DXP logs using Elastic Stack. Convert Liferay logs to .log files, process them using Logstash, index them in Elasticsearch, and display and create graphs in Kibana.