3 min
Public DNS Providers and Their Resolver Addresses
Common public DNS services, their resolver IPs, and operational characteristics.
Signal Path
Field notes on the systems that quietly run the internet.
Infrastructure field notes for operators, builders, and the mildly obsessed. Practical explanations of VPN routing, DNS automation, BGP policy, and the trade-offs behind real-world infrastructure decisions.
Edge design Control planes Traffic policy
5 min
Vibe Coding Saves a Lot, Until it Doesn't
AI shifts debt from code to ownership and operations
5 min
Why Running Your Own Mail Server Is Still a Bad Idea
Deliverability, compliance, and the governance costs nobody budgets for.
8 min
Do We Use Commercial AI or Run It Locally?
Security, governance, cost, and the decision every organization is being forced to make.
8 min
Backups Don’t Fail During Writes: They Fail During Restores
The uncomfortable truth about disaster recovery, testing gaps, and why “we have backups” isn’t a recovery plan.
7 min
Cloud Storage Isn't Cheap Anymore. Try Cold Backups
Why “just store it in s3” stopped being obvious, and how cold storage changes the math.
7 min
The Hidden Cost of Free TLS Everywhere
Certificates are free now. Operating them isn’t
6 min
Cybersecurity at Scale Is a Governance Problem
Accountability, continuity, and why “paperwork” is the real control plane.