Database - ITNotes

Stop Guessing, Start Measuring: Stress Testing MySQL and PostgreSQL with sysbench

April 4, 2026

Stop guessing your database capacity. Learn how to use sysbench to run professional stress tests on MySQL and PostgreSQL, and how to interpret TPS and 95th percentile latency.

Database

How to Read Execution Plans: Solving the ‘Slow Query’ Mystery in Postgres and MySQL

April 3, 2026

Is your SQL crawling? Stop guessing and start reading Execution Plans. This guide shows you how to use EXPLAIN in PostgreSQL and MySQL to pinpoint bottlenecks like sequential scans and manual file sorts.

Database

Database Monitoring with Prometheus & Grafana: A No-Nonsense Guide

April 3, 2026

Tired of 2 AM outages? Learn to build a professional database monitoring stack using Prometheus and Grafana. This guide covers exporter setup, critical metrics, and production-ready alerting.

Database

Database Normalization: From ‘God Tables’ to Clean Architecture (1NF to 3NF)

March 31, 2026

Transform messy 'God Tables' into efficient database schemas. Learn the practical steps to reach 1NF, 2NF, and 3NF with SQL examples and real-world trade-offs.

Database

Mastering Database Security: User Permissions, SQL Injection, and Data Protection

March 28, 2026

Securing your database is non-negotiable. This tutorial guides you through essential practices, from implementing the principle of least privilege with user permissions to robustly preventing SQL injection attacks. Discover how to encrypt data, manage user roles, and monitor your database effectively to safeguard your critical information.

Database

Database Replication: Master-Slave & Multi-Master Setups Explained

March 27, 2026

The 2 AM Pager Call: When Your Database Flatlines It's 2 AM. The dreaded pager…

Database

Database Sharding: Horizontal Scaling for Millions of Records

March 25, 2026

Database sharding is a horizontal scaling technique vital for applications handling millions of records, distributing data across multiple servers. It overcomes the limitations of single-server databases, offering immense scalability but requiring careful design and operational management.

Database

Database Connection Pooling: Six Months In, Here’s What I Learned

March 21, 2026

Six months into production with database connection pooling, I'm sharing my practical journey. This guide unpacks how it works, its substantial performance gains, and critical configuration insights designed to help your applications scale with confidence.

Database

Flyway and Liquibase: Automated Database Migration in Real-World Projects

March 21, 2026

Automate your database schema changes effectively with Flyway or Liquibase. This comprehensive guide explains the core concepts, compares these two popular tools in detail, and provides practical setup examples for real-world projects. Learn how to manage migrations for consistent and reliable database deployments, minimizing errors and streamlining team collaboration.

Database

Elasticsearch: Building Powerful Full-Text Search for Your Applications from A to Z

March 18, 2026

Full-text search is more than just finding exact words. It's about understanding context, handling typos,…