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Cloudflare reports faster DNS builds through targeted rebuilding

Cloudflare has described a targeted DNS build planner that selects the smallest rebuild it can establish is safe and a scheduler that combines work for the same zone. In its own deployment, the company reports an 85% reduction in peak memory and roughly half the delay from a change to writing the resulting data to…

NEWS BRIEF

What happened

Cloudflare has described a targeted DNS build planner that selects the smallest rebuild it can establish is safe and a scheduler that combines work for the same zone. In its own deployment, the company reports an 85% reduction in peak memory and roughly half the delay from a change to writing the resulting data to Quicksilver.

What the announcement does not establish

These are results from Cloudflare’s pipeline, not a performance guarantee for other DNS systems. The engineering account emphasizes proving which changes can safely avoid a full rebuild.

Primary source: Cloudflare: original announcement (2026-11-02). Sources checked November 3, 2026.

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