Posted inDevOps
AWS ECS Fargate & Terraform: A Production-Ready Deployment Guide
Ditch the server management headache. Learn to deploy serverless containers using AWS ECS Fargate and Terraform with this production-ready guide.
Posted inHomeLab
Ditch Slack: Self-Host Mattermost with Docker for Total Data Control
Take control of your team's data. This guide walks you through deploying Mattermost on Docker with a PostgreSQL backend for a professional, self-hosted chat experience.
Posted inLinux
Mastering lsof: Find Which Process is Using Your Files and Ports
Master the lsof command on Linux to troubleshoot system issues by identifying which processes are using specific files, network ports, and sockets. Learn practical tips for production environments.
Posted inLinux
Stop Waiting: Mastering GNU Parallel to Maximize Your Linux CPU
Stop waiting for single-threaded Bash loops. Master GNU Parallel to run tasks across all your CPU cores simultaneously, reducing processing times from hours to minutes.
Posted inProgramming
Building a Rate Limiter from Scratch in Go: Token Bucket Algorithm for API Protection
Building rate limiting from scratch reveals what's actually happening inside the libraries you'd normally reach for. This tutorial walks through implementing a concurrent-safe Token Bucket rate limiter in Go — from the core algorithm to HTTP middleware — with practical parameter tuning advice for production use.
Posted inNetworking
Scapy Python Network Packet Crafting: Protocol Testing, Attack Simulation, and Deep Network Debugging
Scapy is a Python library that lets you build, send, and analyze custom network packets at any layer of the stack. After six months of daily use in production debugging and lab testing, here's how to use it effectively for protocol testing, ARP and DNS analysis, and simulating network conditions safely.
Posted inHomeLab
Deploy Beszel on Docker: Lightweight Server Monitoring Dashboard for Your HomeLab (5-Minute Setup)
Beszel is a self-hosted server monitoring dashboard that runs on Docker and covers CPU, RAM, disk, network, and container stats with near-zero overhead. This guide walks through a 5-minute single-host setup, multi-server HomeLab configuration with remote agents, webhook alerting, and production tips from real deployment experience.
Posted inDatabase
Valkey: Install, Configure, and Migrate from Redis After the License Change
After Redis Ltd. changed its license to SSPL in 2024, our team migrated three environments to Valkey — the Linux Foundation-backed BSD fork. Six months in, here's the full guide: installation, configuration, and proven zero-downtime migration strategies from Redis to Valkey.
Posted inDevOps
Kubernetes Local Development with Tilt: Ditch the Build-Push-Deploy Loop for Good
The traditional Kubernetes build-push-deploy cycle eats 30–90 minutes per workday in waiting time. This guide shows how to set up Tilt with k3d and a local registry to get live file sync, real-time auto-reload, and in-cluster debugging — cutting iteration cycles from 3 minutes to under 10 seconds.
Posted inLinux
Linux SUID, SGID, and Sticky Bit: Master Special Permissions for System Security
SUID, SGID, and Sticky Bit are Linux's special permission bits that control privilege elevation and file ownership inheritance. Here's how each one works internally, when to actually use them in production, and how to audit your system before someone else finds the misconfigurations.