Linux

• PostgreSQL vs SQLite on a VPS: the quickest no-regret choice
• SMB Shares Over VPN Without Drops: Fixing “Network Path Not Found” for Real
• ZFS Special VDEV Failure: How to Survive the Nightmare Scenario
• NAT Through VPN: Connect Conflicting Networks Without Breaking Services
• Office VPN failover: keep tunnels up with 2 ISPs (without manual babysitting)
• ESXi Alternatives for SMB: Proxmox vs XCP-ng vs Hyper-V
• Debian 13: APT upgrade gone wrong — roll back one package without a domino collapse
• Email: Inbound Spam Flood — Survive the Attack Without Blocking Real Users
• ZFS zfs diff: Finding Exactly What Changed Between Snapshots
• Proxmox “VM is locked (backup/snapshot)”: how to remove a lock safely
• PostgreSQL vs MongoDB: flexible schema vs predictable ops—who hurts less later
• VPN Full-Mesh for Three Offices: When You Need It and How to Keep It Manageable
• Debian 13: PHP-FPM socket permissions — the tiny fix that kills 502s (case #35)
• VPN certificates: do it properly without permanent self-signed pain
• Debian 13: Fix “Too many redirects” in Nginx by killing the canonical/HTTPS loop
• Proxmox on ZFS: the backup strategy that doesn’t lie (snapshots vs real backups)
• Better Typography for Docs That Engineers Actually Read
• Debian 13 auditd without killing disks: practical settings for sane auditing
• Google Search Console Crawl Anomaly: What It Means and What to Do
• DNS: NXDOMAIN vs SERVFAIL — the quick way to tell what’s broken (and fix it)
• Debian 13 Firmware Missing After Install: Fix NIC and HBA Support the Right Way
• VPN + Port Forwarding: Expose Services Safely Without Turning Your VPN Into a Hole
• Build a Right-Side TOC for Docs: Sticky, Scroll-Margin, Active Section Highlighting
• Ubuntu 24.04: DNS caches lie — flush the right cache (and stop flushing the wrong one) (case #86)
• Ubuntu 24.04: MySQL “too many connections” — fix it without making the DB slower
• MySQL vs MariaDB: binlog disk explosion—how to keep it under control
• WordPress cron not running: why scheduled posts fail and how to fix
• Ubuntu 24.04 SSD/NVMe performance falls over time: prove it’s TRIM/GC and fix it
• Proxmox ZFS checksum errors: disk or cable — how to prove which one
• ZFS Scrub: How Often to Run It and What It Proves
• MySQL vs MariaDB max_connections: stop OOM crashes on small servers
• ZFS Dedup Tables (DDT): What They Are and Why They Hurt
• Debian 13 kernel tainted: what it means and when you should care
• Office VPN for ERP/CRM apps: prevent freezes and timeouts the right way
• WordPress Plugin Broke Your Site: Disable It via FTP/SSH and Recover Fast
• Dovecot Mailbox Corruption: Recovery Steps That Minimize Damage
• Cmd+K Search Modal UI: Results Lists, Keyboard Hints, and Empty States (HTML/CSS-First)
• Ubuntu 24.04: DNS caches lie — flush the right cache (and stop flushing the wrong one) (case #26)
• DNS: Unbound caching resolver — set it up in 15 minutes (and avoid the common trap)
• Proxmox Security Checklist: 2FA, RBAC, Firewall, Updates, and Safe Remote Access
• MySQL vs MariaDB on a 16GB VPS: When Replication and Pooling Become Mandatory
• Ubuntu 24.04 Watchdog resets: detect silent hangs before they cost you uptime (case #18)
• MariaDB vs PostgreSQL Migration: Move Without Downtime and Without Surprises
• Proxmox CIFS “Permission denied”: fix credentials, SMB dialect, and mount options
• CSS Animations That Don’t Murder Performance: Transform/Opacity Rules + Pitfalls
• DNS Cache Poisoning Basics: Harden Your Resolver Without Overengineering
• dnsmasq Cache + DHCP: A Clean Config That Doesn’t Fight Your System
• Docker: Alpine vs Debian-slim — stop picking the wrong base image
• ZFS L2ARC sizing: When 200GB Helps More Than 2TB
• WireGuard “Handshake did not complete”: pinpoint NAT, ports, and time issues