Databases
SSD vs HDD: How to Choose the Right Storage for Your Workload
Practical guide to choosing SSD or HDD storage for databases, analytics, and archival workloads based on real-world performance, cost, and endurance tradeoffs.
Infrastructure
Databases
RAID Levels Explained: RAID 0, 1, 5, 6, 10 and How They Actually Work
A practical guide to RAID 0, 1, 5, 6, and 10 from someone who has rebuilt arrays at 3 AM. Learn how each RAID level works, performs, and fails.
Databases
SAN vs NAS vs DAS: Understanding Storage Architecture Differences
Learn the real differences between SAN, NAS, and DAS storage architectures. A veteran architect breaks down performance, cost, and use cases for each approach.
Security
Stateless vs Stateful Firewalls: How They Work and When to Use Each
Learn the real differences between stateless and stateful firewalls, how each inspects traffic, and when to deploy them in production network architectures.
Networking
Routers vs Switches: How They Work and When You Need Each
Understand the fundamental differences between routers and switches, how each operates at different network layers, and when to use which in modern network design.
Networking
Latency vs Bandwidth: What's the Real Difference and Why It Matters
Understand the critical difference between latency and bandwidth, why both matter for performance, and how to optimize each in real-world cloud and network architectures.
Networking
What is NAT? Network Address Translation Explained with Examples
Understand how NAT works, why it exists, and the different types: static NAT, dynamic NAT, PAT, and CGNAT. Real examples from enterprise and cloud networks.
Networking
How DNS Resolution Works: The Complete End-to-End Process
Learn exactly how DNS resolution works from browser to authoritative nameserver. Recursive resolvers, caching, TTLs, and what happens when lookups fail.
Networking
DNS Record Types Explained: A, AAAA, CNAME, MX, TXT and More
A practical guide to every DNS record type you'll encounter: A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, PTR with real configuration examples.
Cloud Architecture
What is Cloud Computing? A No-BS Guide from Someone Who Built Data Centers
A veteran architect who built physical data centers explains what cloud computing actually is, how it works under the hood, and why it matters for your infrastructure decisions.