All about Databases
Introduction When tuning PostgreSQL databases, the hardest part isn’t writing the fix — it’s knowing what to fix. Without visibility into which queries consume the most resources, optimization becomes guesswork. That’s where pg_stat_statements comes in. It acts as PostgreSQL’s Query Store, recording detailed statistics about query executions. With it, DBAs and developers can measure performance, […]
Top PostgreSQL Monitoring Tools Every DBA Should Know (pg_stat_statements, pgBadger, pgAdmin, Prometheus, Grafana) Introduction As databases grow in size and complexity, monitoring PostgreSQL is no longer optional — it’s essential. Without monitoring, DBAs are blind to slow queries, blocking locks, or system bottlenecks. Proper monitoring helps in troubleshooting performance issues, optimizing queries, and avoiding downtime. […]
Vacuum, Autovacuum, and Analyze — Everything a PostgreSQL DBA Must Know Introduction PostgreSQL uses MVCC (Multi-Version Concurrency Control) to handle concurrent transactions. When rows are updated or deleted, PostgreSQL doesn’t overwrite them. Instead, it marks the old versions as dead tuples and keeps new versions. Over time, dead tuples accumulate → bloat, wasted space, slower […]
SQL Server Extended Events (XE) is the modern replacement for SQL Trace and Profiler. It provides a lightweight, highly customizable way to capture diagnostic and performance data, making it one of the most powerful tools for DBAs to troubleshoot production issues efficiently. In this guide, we’ll cover: What Extended Events are How to create and […]
Enabling and Using Query Store in SQL Server As a SQL Server DBA, the Query Store is one of the most powerful tools for monitoring query performance, detecting regressions, and stabilizing execution plans. Below is a step-by-step guide to enabling Query Store and leveraging it with practical queries. 1. What is Query Store? Query Store, […]
