Hulu has successfully scaled its internal application and infrastructure monitoring platform by combining two open source tools: InfluxDB, a time series database optimized for massive volumes of data, and Kafka, an event-streaming platform that provides scalability, fault tolerance, and usability features. This combination allows Hulu to handle over 1 million metrics per second while providing real-time analytics queries with InfluxDB. Additionally, companies like CERN and Robinhood are also using InfluxDB and Kafka together to solve problems such as storing large amounts of data from experiments and powering anomaly detection platforms. The open source nature of these tools has created a strong ecosystem of tools and libraries that enhance their value beyond the core project provides.