How Radix trees made blocking IPs 5000 times faster

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Radix trees might come handy to speed-up IP blocklists.

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IAM

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2026-10-10

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1. ▲

   radix github.com

   Radix Tree implementation

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2. ▲

   Radicale radicale.org

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   Pi-hole pi-hole.net

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   The Radix Center radixcenter.org

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   IRC-BF gitlab.com

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   IPFire ipfire.org

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IAM › Blocklists: “Radix trees might come handy to speed-up IP blocklists.”