N Is For Networking N4N043: Redundancy vs. High Availability Part 1
17 snips
Nov 20, 2025 Holly and Ethan dive into the nuances of redundancy versus high availability, highlighting their importance in network design. They share real-world examples, particularly from hospitals and financial institutions, and discuss the common budgetary pushback. Techniques for achieving redundancy include active/standby setups and multi-node clusters. The conversation also touches on advanced concepts like anycast, DNS strategies, and WAN link design. Listeners can expect a tease for upcoming discussions on fragility and cost in network management.
AI Snips
Chapters
Transcript
Episode notes
Load Balance With Health Checks
- Use load balancers to present a virtual IP and distribute requests to pool members.
- Configure health checks so unhealthy servers are removed automatically.
Anycast For Global Redundancy
- Anycast announces the same IP block from many locations to route users to the nearest instance.
- It provides global redundancy and geographic load distribution.
Use DNS For Simple Load Distribution
- Use DNS round-robin or intelligent DNS to distribute clients across servers.
- Use advanced DNS algorithms to prefer faster or healthier servers when possible.