https://soyunpollo.dev/tags/sql/ Recent content in Sql on Ruben Meza Hugo -- 0.158.0 en-us Thu, 20 Nov 2025 16:47:37 -0600 https://soyunpollo.dev/posts/db-sql-metrics-grafana-guide/ Thu, 20 Nov 2025 16:47:37 -0600 https://soyunpollo.dev/posts/db-sql-metrics-grafana-guide/ <p><em>Practical Guidance for Engineers Using Prometheus + Go’s <code>database/sql</code> Metrics</em></p> <p>Most application performance issues in database-backed systems aren’t caused by MySQL itself — they come from <strong>connection pool pressure</strong>, <strong>slow acquisition</strong>, or <strong>misconfigured limits</strong>.<br> This post is a practical guide to understanding the key Prometheus <strong><code>db_sql_*</code></strong> metrics, why they matter, and how to visualize them effectively in Grafana.</p> <hr> <h2 id="1-what-are-db_sql_-metrics">1. What Are <code>db_sql_*</code> Metrics?</h2> <p>When using Go’s <code>database/sql</code> along with Prometheus instrumentation, your service emits a standardized set of metrics that describe your <em>client-side</em> connection pool behavior.<br> These cover:</p>