Using QuestDB to collect infrastructure metrics

QuestDB is an open-source time-series database known for its ultra-low latency and high ingestion throughput, making it suitable for handling demanding workloads, such as those found in trading floors and mission control environments. It supports SQL, providing an accessible querying language for many users. The article discusses the integration of QuestDB with Prometheus using Influx Data's Telegraf as a proxy to convert Prometheus-formatted metrics into the InfluxDB Line Protocol (ILP) for ingestion. This setup allows for the storage and querying of infrastructure metrics within QuestDB, enabling complex time-series queries with SQL. The configuration involves using Helm charts for installing Telegraf and setting up remote write capabilities in Prometheus, as well as configuring QuestDB to handle metrics efficiently. Despite requiring some initial setup effort, QuestDB offers significant benefits in performance and ease of use for time-series data analysis without being confined to vendor-specific query languages.