The Classic Analogy
🔑 Mutex: You have the key to the toilet. You lock it, use it, unlock it and return the key.
🚦Binary Semaphore: There’s a sign on the door. You flip it when entering or leaving. It works as long as everyone follows the protocol.
Which analogy did you use to learn this? #IPC #OS

Was soll man dazu noch sagen...? 😎
#HumorUnschlagbar #DeutschlandDigitalSicherBSI #Flachwitz #ITSicherheit #DarkMode

Did you know FreeBSD had a lightweight solution for secure process isolation long before container tech was trendy? It’s called Jails—an elegant way to run multiple services securely, while keeping each one neatly separated.

Watch the full intro here: buff.ly/YrGZObh

#FreeBSD #OpenSource #TechTips

As I’m currently exploring memory management techniques 🔭 I of course came across the buddy memory allocation technique. It splits memory into halves (buddies) until a suitable block size is found and merges them back when both are free. Efficient and elegant! #MemoryManagement #ComputerScience

Grasslands do more than just look pretty. 🌱They bind carbon and have a cooling effect - helping us mitigate global warming. 🌎🌡️➡️❄️

The Q2 2025 Issue of the FreeBSD Journal is here!

This edition focuses on Networking and features articles covering:
▪️ Overlord: Deploy Jails as Fast as You Code
▪️ Making FreeBSD’s networking framework accessible to everyone who runs jail and VM guests
▪️Plus, more!

Read it here buff.ly/UCXJWlV

Venus is the hottest planet in our solar system. Didn’t know that. 🌡️🥵 And if you need a change of direction in your life, consider settling on Venus as it spins in the opposite direction of Earth. 🌎