Valley of the Temples, Agrigento, AG, Italy. Photo by Dario Crisafulli on Unsplash.In the past few years, much has been talked and written about the “three pillars of observability”: metrics, logs, and traces. A Google search for the phrase brings up over 7,000 results, with almost every observability vendor having a blog post or an e-book on the topic. Recently, the term MELT started showing up t