Senior Software Developer and Engineer Finn Christiansen Hamburg

I am Finn Christiansen, a Senior Software Developer and Cloud Engineer in Hamburg. Discover my innovative solutions and professional journey.

Technologies

Node.js
AWS
Lambda
Express.js
Terraform
CDK

Posts

How to gracefully shutdown a Spring Boot Application

Spring Boot supports graceful shutdown, but it isn't enabled by default. Learn how to activate it and control the shutdown process to ensure your applications terminate smoothly when receiving a SIGTERM signal.

Saving My Data After a SQL Mistake: Selective Restore in PostgreSQL

Learn how to recover specific data in PostgreSQL after an accidental deletion without losing newly added records. This guide walks through a targeted recovery approach using Amazon RDS snapshots, Terraform automation, and custom data extraction scripts, enabling selective data restoration while preserving ongoing changes.

Pomodoro Timer Script for Mac

In this post, I share a simple Pomodoro timer script for Mac that helps you stay productive by forcing breaks and muting distractions like music. The script is designed to automatically pause Spotify, mute system sounds, and lock your screen when time is up, all with minimal setup. It’s a free, customizable alternative to paid productivity apps, making it easier to focus and take regular breaks.

Practical guide to POSIX signals in TypeScript

POSIX signals are essential for managing processes in Unix-based systems, allowing the OS to send instructions like termination or interruption. Understanding signals like SIGINT, SIGTERM, and SIGKILL ensures graceful shutdowns and resource cleanup in environments like Docker or Kubernetes. Proper handling prevents issues from forced terminations, helping developers build more resilient applications.

Contact

You can reach me at

finn@finnchristiansen.com