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Planet-scale anycast
ENGINEERING

Building a planet-scale anycast network from scratch

How we designed Stratum's edge to route every request to the closest healthy region in under 20 milliseconds — and what we learned tearing down three previous architectures along the way. A candid account of the rewrites that shaped the network Stratum runs today.

Jun 1, 2026 · 3 min read
Network traffic routing
ENGINEERING

How we route traffic across 30 regions with anycast

A deep dive into the network architecture that powers sub-20ms latency for users on every continent.

May 28, 2026 · 1 min read
Load balancing across availability zones
NETWORKING

Load balancing across availability zones

Spreading traffic across zones keeps a single failure from taking you offline. We cover health-aware load balancing, connection draining during a zone outage, and how we weight pools so capacity follows demand.

Sep 14, 2021 · 3 min read
Edge caching strategies that cut origin load by 90%
NETWORKING

Edge caching strategies that cut origin load by 90%

Most requests never need to touch your origin. We walk through cache-key design, stale-while-revalidate, and per-route TTLs that keep content fresh while shielding your backend from traffic spikes.

Sep 14, 2021 · 1 min read
Sample image
NETWORKING

Rate limiting at the edge to keep services healthy

A single misbehaving client can take down a shared service. We push rate limits to the edge using token buckets per key, so abusive traffic is shed before it ever reaches your origin.

Sep 14, 2021 · 1 min read
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