Database Insights

Configure PostgreSQL TLS with self-signed or CA-signed certificates. Force TLS via pg_hba.conf, set minimum TLS version, and verify server certs from clients.

pg_stat_statements tracks every query's total time, call count, and cache hit ratio. Learn to enable it, find your highest-cost queries, hunt for cache misses, and measure the impact of every optimization.

mysqld_exporter exposes 300+ MySQL metrics for Prometheus. Learn to deploy it, configure essential alerting rules for connection saturation and replication lag, and build production dashboards in Grafana.

Your MySQL instance is at 80% CPU and nobody knows which query is responsible. Learn to enable the slow query log, analyze it with pt-query-digest, and fix the top patterns causing CPU and I/O saturation.

PostgreSQL's pg_stat_activity view exposes every connection's state — but understanding what 'idle in transaction' means and why it's dangerous requires knowing the full lifecycle of a PostgreSQL backend process.

MySQL transmits data in plaintext by default, exposing passwords and query results to network interception. Here's how to configure SSL/TLS for MySQL — from certificate generation to enforcing encrypted connections.

Hatchet transforms raw MongoDB JSON logs into actionable insights — surfacing slow operations, connection storms, and namespace hotspots that are impossible to spot in raw log files.

Add data quality checks to your pipeline — row count validation, schema drift detection, and anomaly alerting with Great Expectations

Implement schema change management with versioning, peer review, and automated validation for safe deployments

Patroni automates PostgreSQL failover using a distributed consensus store like etcd. Learn how to configure Patroni for production-grade HA.

Build a data-driven capacity planning process using historical metrics, growth trends, and resource modeling

Build a production-grade PostgreSQL HA stack using Patroni for failover and HAProxy for connection routing