DevOps

Instructions for installing KVM on Ubuntu and managing VM via Cockpit Web UI. Configure network bridge, NAT virtual network, storage pool for 2 node homelab.

Duy TranDecember 25, 202527 min

Learn Circuit Breaker Pattern in Spring Boot with Resilience4j - from operating principles, detailed configuration, practical examples to best practices. A complete guide to help you build resilient microservices systems, prevent cascading failures and automatically recover when services encounter problems.

Duy TranDecember 23, 202535 min

Detailed instructions for upgrading PostgreSQL 17.6 to 18.1 for production environments with minimal downtime. Includes pg_upgrade, logical replication, rollback plan, and updated best practices for PostgreSQL 18 with Async I/O, Statistics Preservation, and new pg_upgrade --swap mode.

Duy TranDecember 23, 202515 min

This article will help you master PostgreSQL backup and restore methods from basic to advanced, along with practical best practices.

Duy TranDecember 8, 202513 min

Detailed instructions for installing Harbor - private Docker registry on Ubuntu 24.04, including HTTPS, security, backup and best practices.

Duy TranDecember 2, 202510 min

Share experience in deploying and open-source fully automated PostgreSQL HA cluster solution

Duy TranNovember 25, 202514 min

Detailed instructions on how to install KVM (Kernel-based Virtual Machine) on Ubuntu 24.04 LTS with Cockpit or Kimchi web management interface. Learn how to set up a complete virtualization environment, configure a network bridge, and create your first virtual machine with ease.

Duy TranNovember 24, 20259 min