Part 2 of a three-part series on Varnish monitoring delves into the tools Varnish Cache offers for precise monitoring, focusing primarily on varnishstat and varnishlog. Varnishstat provides real-time access to various performance metrics, such as cache hits, resource consumption, and thread information, and can be customized to display specific metrics. It is useful for quick health checks, but integrating its data with a dedicated monitoring service is recommended for comprehensive performance tracking and alerts. Varnishlog, on the other hand, is valuable for debugging and tuning configurations by offering detailed logs of individual requests. Specialized tools like varnishtop, varnishhist, and varnishsizes build on varnishlog to analyze frequently occurring entries, latency, and request sizes, respectively. The choice of metrics to monitor should align with specific use cases and the importance of the insights they provide. The article hints at an upcoming discussion on using Datadog for Varnish monitoring in the series' final installment.