Cloudflare's DNS Zone Builder cuts peak memory 85% and halves propagation time

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Cloudflare reported on November 2, 2026 that a targeted build planner and new scheduler reduced peak memory use in its DNS Zone Builder by 85%. The time from a DNS change to its data being written to Quicksilver was also cut in half. The Zone Builder now handles about 700 record changes per second, up from roughly 250 in 2022, with some zones exceeding 20 million records. Under the new system, the planner picks the smallest build that can be proven safe, falling back to a full rebuild when it cannot. Timestamp-only updates still trigger full builds until their origin and purpose are identified.

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Free vs Paid Next.js SaaS Boilerplates in 2026: What Free Kits Include

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

Exporting Daily Google Ads Cost by Country to CSV Using Python

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ProgrammingDEV Community ·

Generating Localised Open Graph Images per Language at Build Time

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