Networking
Service Mesh Explained: Istio, Linkerd, and Microservice Networking
How service meshes handle the networking complexity of microservices: traffic management, mTLS, observability, and when you actually need one.
Networking
DevOps
Networking Protocols Overview: TCP, UDP, ICMP, HTTP, FTP, SNMP and More
A networking protocols overview for practitioners. TCP, UDP, HTTP, ICMP, FTP, SNMP, and more explained by an architect who's debugged them all in production.
DevOps
Types of Load Balancers: L4, L7, Global, and How to Choose
A deep dive into load balancer types from an architect who's configured hundreds. L4, L7, global, and how to pick the right one for your architecture.
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 CIDR? Classless Inter-Domain Routing and Subnet Notation Explained
Learn CIDR notation, subnet masks, and how classless addressing replaced the old Class A/B/C system. Practical examples for cloud VPC design and network planning.
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
What is a VPN and How Does It Work? Tunneling, Encryption, and Real-World Use
Understand how VPNs work under the hood: tunneling protocols, encryption, split tunneling, and real enterprise use cases beyond just hiding your IP address.
Networking
Why Do We Need IPv6? The Exhaustion Crisis and What Comes Next
IPv4 addresses have run out. Learn why IPv6 exists, how the exhaustion crisis unfolded, what NAT workarounds cost us, and why the transition matters now.
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.
Networking
Layer 4 vs Layer 7: Load Balancing, Firewalls, and Why It Matters
Understand the practical differences between Layer 4 and Layer 7 for load balancers, firewalls, and proxies with real architecture examples.
Networking
The OSI Model Explained: All 7 Layers with Real-World Examples
Master the OSI model's 7 layers with practical examples, real protocols at each layer, and why this framework still matters for troubleshooting.
Networking
What is MPLS? Multiprotocol Label Switching Explained for Modern Networks
Understand MPLS label switching, how it differs from IP routing, its role in enterprise WANs, and why SD-WAN is replacing it in many networks.