Inside look at TSDB. Migration to Prometheus and Cortex. Okmeter experience

Observability is everything. But in this talk you won't hear about observability. Let's talk about the main tool that is essential for building observability.

We'll start with the patterns which are the base of modern TSDB. We'll understand what Log Structured Merge Tree means here. We will prove that the mechanics of Prometheus is the best.

You will learn how Vladimir and his team migrated Okmeter from home-grown solutions (based on Kafka, Cassandra and Elastic) to the stack around Prometheus and Cortex.