Title: networking  - Immanuel Raj

---

# Tag: networking

 * 
   ## 󠀁[How Does Real-Time Courier Tracking Actually Work?](https://immanuelraj.dev/how-real-time-courier-tracking-works/)󠁿
   
 * [October 12, 2026](https://immanuelraj.dev/how-real-time-courier-tracking-works/)
 * —
 * by
 * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/)
 * in [Networking](https://immanuelraj.dev/category/networking/), [Web](https://immanuelraj.dev/category/web/)
 * Read Time
 * 2–3 minutes
 * Most “real-time” systems are controlled illusions. Here’s how courier tracking
   actually works — from GPS pings to smooth UI animations — and the engineering
   trade-offs behind it.
 * [⌊A tech-themed image with a dark background. A glowing orange Ubuntu logo on
   the left is connected to a glowing blue globe (representing the internet) on 
   the right by a line with the word 'Netplan' in the center.⌉⌊A tech-themed image
   with a dark background. A glowing orange Ubuntu logo on the left is connected
   to a glowing blue globe (representing the internet) on the right by a line with
   the word 'Netplan' in the center.⌉[
 * 
   ## 󠀁[How to Add Floating IP to Ubuntu and Debian Servers with Netplan](https://immanuelraj.dev/netplan-floating-ip-configuration/)󠁿
   
 * [August 14, 2025](https://immanuelraj.dev/netplan-floating-ip-configuration/)
 * —
 * by
 * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/)
 * in [Linux](https://immanuelraj.dev/category/linux/), [Networking](https://immanuelraj.dev/category/networking/),
   [Self Hosting](https://immanuelraj.dev/category/self-hosting/)
 * Read Time
 * 8–11 minutes
 * Learn how to configure floating IP addresses on Ubuntu and Debian servers using
   Netplan for high availability and seamless failover. This comprehensive guide
   covers YAML configuration, troubleshooting, security best practices, and automation
   scripts for production environments.