Database Archives

MySQL Replication with GTID: Master-Slave Setup and Safe Production Failover

October 18, 2026

Discover how switching to GTID-based MySQL replication eliminates fragile binary log coordinates during production incidents. Follow this real-world guide to configure master-slave clusters and execute zero-data-loss failover safely.

Database

PostgreSQL Autovacuum Optimization: Diagnose I/O Bottlenecks, Prevent Wraparound, and Tune Production

October 18, 2026

Eliminate disk I/O bottlenecks and resolve dead tuple bloat through practical PostgreSQL autovacuum tuning. Learn how to configure cost limits, tune high-churn tables individually, and safeguard production clusters from transaction ID wraparound outages.

Database

Real-Time SQLite Backup to S3 with Litestream: Step-by-Step Guide for Zero-RPO Recovery

October 17, 2026

Learn how to continuously replicate SQLite databases to AWS S3 using Litestream. This step-by-step tutorial covers WAL streaming, sub-second RPO recovery, and production Docker setups.

Database

Data Masking with PostgreSQL Anonymizer: Sanitizing Sensitive Data for Staging Environments

October 17, 2026

Learn how to use PostgreSQL Anonymizer to mask sensitive PII before syncing production databases to staging, covering declarative security labels, deterministic masking, and CI/CD validation.

Database

Building Hybrid Search in PostgreSQL: Combining pgvector and Full-Text Search with Reciprocal Rank Fusion (RRF) for RAG

October 17, 2026

Combine pgvector semantic search with PostgreSQL full-text search using Reciprocal Rank Fusion (RRF). Build a resilient, high-accuracy hybrid retrieval engine for production RAG systems without external vector databases.

Database

Database Migration with Liquibase: Schema Versioning, Safe Rollbacks, and CI/CD Automation

October 16, 2026

Learn how to version and automate database migrations using Liquibase. This guide covers ChangeSet configuration, tracking mechanisms, safe rollbacks, and CI/CD pipelines.

Database

SQLite Performance Optimization: Production Guide to WAL Mode, PRAGMA Tuning, and Concurrency

October 16, 2026

Learn how to optimize SQLite for real-world production workloads by enabling WAL mode, fine-tuning memory PRAGMA settings, and eliminating concurrent database lock errors.

Database

Real-Time Data Synchronization with MongoDB Change Streams: A Practical Guide

October 12, 2026

Learn how to build real-time synchronization pipelines with MongoDB Change Streams. This guide covers oplog event listening, aggregation filtering, and resume token management.

Database

Distributed Lock with Redis and Redisson: Preventing Race Conditions in Multi-Node Systems

October 12, 2026

Horizontal scaling breaks JVM-level mutexes and native locks. Learn how race conditions cause overselling in distributed clusters and how to implement robust distributed locking with Redis and Redisson in Java Spring Boot.

Database

Prevent Redis Cache Stampede: Mutex Locking vs Probabilistic Early Expiration (XFetch)

October 10, 2026

Cache stampedes can crush databases when high-traffic keys expire. Discover how to resolve dogpiling by comparing distributed mutex locks with the probabilistic XFetch algorithm in Redis and Python.