The document discusses log analysis using open source scalable systems. It outlines challenges of analyzing logs from distributed systems which are generated in different formats by various components. It proposes using logstash to collect logs, Redis for queuing, Elasticsearch for storage and searching, Kibana for dashboards and visualization, and other tools like Beaver and Lumberjack. The architecture involves collecting, processing, and analyzing logs in a centralized manner for easier access and monitoring of distributed systems.