# Cloudflare says DNS cache redesign reclaimed 100TB of RAM

_Friday, August 28, 2026 at 9:14 AM EDT · Infrastructure · Latest · Tier 2 — Notable_

![Cloudflare says DNS cache redesign reclaimed 100TB of RAM — Primary](https://cdn.mos.cms.futurecdn.net/QVUrvD86z3UYAMVohMuQcD-2000-80.jpg)

Cloudflare said it reclaimed roughly 100TB of RAM across its global fleet by changing the in-memory layout of DNS cache entries for its 1.1.1.1 resolver. The company said entries fell from 953 bytes to 420 bytes, while its benchmarks showed insert throughput up 43% and lookup latency down 19%. The rollout ran from mid-May to early July. Cloudflare said it will use the reclaimed memory for larger DNS caches rather than reduce server memory configurations.

## Sources

- [Tom's Hardware](https://www.tomshardware.com/tech-industry/big-tech/cloudflare-frees-100tb-of-ram-by-shrinking-dns-cache-entries)

---
Canonical: https://techandbusiness.org/newswire/kBl5pd8R9IpSLL8577E8d_
Retrieved: 2026-08-28T15:47:53.601Z
Publisher: Tech & Business (techandbusiness.org)