MELT: Understanding Metrics, Events, Logs and Traces for Effective Observability
The infrastructure must be “invisible” to the user, but visible to IT strategists to ensure the performance and service levels required by the business, where observability (as part of SRE or site reliability engineering) is essential to understand the internal state of a system based on its external results. For effective observability, there are four key pillars: metrics, events, logs, and traces, which are summarized in the acronym MELT.