Saving another 100TB of RAM with math (and Rust)
We have thousands of servers all over the world with petabytes of RAM and millions of CPU cores, and all of it is pushed to the max. As vast as those resources feel, they are still finite, and when you need every service to run on every node, it doesn’t leave room for wasted space.At this scale, small improvements are greatly magnified, so even 1%-at-a-time improvements are worth celebrating. And some tweaks add up to a lot more: in this post, we’ll look at how small changes to a single algorithm reduced the memory footprint of one of our Pingora-based services significantly.
- ▪We have thousands of servers all over the world with petabytes of RAM and millions of CPU cores, and all of it is pushed to the max.
- ▪As vast as those resources feel, they are still finite, and when you need every service to run on every node, it doesn’t leave room for wasted space.At this scale, small improvements are greatly magnified, so even 1%-at-a-time improvements
- ▪And some tweaks add up to a lot more: in this post, we’ll look at how small changes to a single algorithm reduced the memory footprint of one of our Pingora-based services significantly.
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| Original publisher | Cloudflare Blog |
| Canonical URL | https://blog.cloudflare.com/saving-100-tb-of-ram-with-math/ |
| Publication time | Fri, 18 Sep 2026 18:51:46 +0000 |
| Retrieval time | 2026-09-18T19:33:45.484Z |
| Last seen | 2026-09-18T19:33:45.484Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | NBHvKg8KiLSV · 1 stories |
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| Publisher visit | Yes — open original |
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| Commercial reuse | May the content be reused commercially? | Not permitted |
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BlogDeep DiveEngineeringOpen Source+4Show 4 more tags7 TagsShow 7 tagsPost TagsDeep DiveEngineeringOpen SourceOptimizationPerformancePingoraRustAll tagsMatching tagsNo tags found1.1.1.12FAAbuseAccessAccess Control Lists (ACLs)AccessibilityAccount TakeoverAcquisitionsAddressingAdvanced Certificate ManagerAdvanced DDoSAdvertisingAegisAEOAfricaAfroflareAgent CloudAgent Development LifecycleAgent ReadinessAgentsAgents WeekAgents Week 2026AIAI BotsAI GatewayAI SearchAI WAFAI WeekAI-SPMAlertmanagerAlways OnlineAMDAMPAnalyticsAnonymousAnti MalwareAnycastAPIAPI GatewayAPI SecurityAPI ShieldAPJCAppleApplication SecurityApplication ServicesArea 1 SecurityArgo Smart RoutingASCIIAsiaAthenian ProjectAtlassianAttacksAudit LogsAustinAustraliaAuthenticationAuthyAuto RagAutomatic HTTPSAutomatic Platform…
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