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Cloudflare Scales D1 Control Plane to Millions of Databases
In a recent article, Cloudflare shared the redesign of the control plane of its D1 serverless SQL database to support millions of databases, avoiding centralized bottlenecks, implementing retries and idempotency, and using eventual consistency.
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Cloudflare’s Post-Quantum GeoKey Manager Enters Closed Beta without Attribute-Based Encryption
Cloudflare has moved a post-quantum rebuild of GeoKey Manager into closed beta, guarding geo-fenced keys with hybrid ML-KEM-768 and X25519 instead of the attribute-based encryption used since 2022. Keys live only in kernel memory on verified regional servers, and any failed check rejects the request, a fail-closed choice practitioners ask could cause a regional outage. GA is planned for Q1 2027.
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Cloudflare Introduces Web Search API for AI Applications
Cloudflare has recently launched a beta Web Search API through AI Gateway. Available through REST APIs and Cloudflare Workers, it provides unified logging, access controls, and billing, and supports bring-your-own-provider keys.
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Cloudflare Opens Quicksilver to Customers as Workers KV Instant, inside a 1 MB Envelope
Cloudflare has put Quicksilver, the internal key-value store behind nearly every request it serves, into private beta as a Workers KV mode. Reads resolve in 1.62 ms at p99 against 287 ms for classic KV. The constraints decide the use case: 10,000 keys, one megabyte per namespace, and one write per namespace per second.
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Cloudflare and VoidZero Introduce tsrs: an AI-Generated Rust Port of TypeScript
Cloudflare, VoidZero and Max Schwenk announced tsrs, an experimental Rust port of the TypeScript compiler, built with the TypeScript team's involvement. Cloudflare claims up to 8x faster checking and 70% less memory than TypeScript 7.0, though one test against 7.1 beta showed 2.7x. It lacks watch mode and a language server, and exits with code 2 on type errors.
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Cloudflare Adds Auto Router to AI Gateway, Picking a Model per Request by Task Complexity
Cloudflare has released Auto Router in public beta through AI Gateway, picking a model per request from a classifier that scores complexity, ambiguity, stakes and context dependence. Cloudflare’s own benchmark puts it ten points below Claude Opus 5.5 on success rate at a third of the cost, and practitioners have questioned how stakes survive a long agent session.
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Cloudflare Reclaims 100 TB of RAM by Optimizing Consistent Hashing
Cloudflare recently documented how it reduced the memory footprint of its internal load-balancing service by more than 100 TB by optimizing the Rust implementation of consistent hashing in pingora-ketama. The changes compacted hash-ring entries and used statistical analysis of hash distribution and collision rates to reduce the number of hashes per backend by about 90%.
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Cloudflare Brings On-Demand CPU and Memory Profiling to Production Workers
Cloudflare has introduced on-demand CPU and memory profiling for Workers and Durable Objects, allowing developers to investigate performance bottlenecks in production using interactive flamegraphs.
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Cloudflares Newly Acquired Vite+ Reaches 1.0 with GitLab CI Support, Hooks, and tsup Migration
VoidZero has launched Vite+ 1.0, the first stable version of its JavaScript toolchain. It features a command line tool for managing Node.js, package management, and frontend development from a single configuration file. Enhancements include CI integration for GitLab and Docker support. Future updates are planned, focusing on stability and diagnostics.
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Cloudflare Traces Turns the Proxy Layer into OpenTelemetry Spans, with New Volume-Based Pricing
Cloudflare has put Traces into open beta, extending automatic tracing from Workers to security rules, transformations, cache, routing and origin handling as OpenTelemetry spans. Traces accept and forward W3C traceparent headers, and Trace Rules allow targeted sampling. Pricing moves to ingestion and retention volume from December 1.
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Cloudflare K2 Builds Event Streams on R2 Object Storage, at a Second of Produce Latency
Cloudflare has launched K2 in public beta, a serverless event streaming service implementing a durable log on R2 object storage. Cloudflare states produce latency of about one second at p99; a tester reported end-to-end p99 of 7.5 seconds, which a commenter answering for the team said was higher than expected. Consume charges match produce charges per GB.
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Cloudflare Open Sources Decision Models for AI Agents
During its recent “Birthday Week”, Cloudflare announced Clef, a set of open-weight AI models designed to choose between predefined options rather than generate text. Cloudflare released 9B- and 27B-parameter models, along with a platform for adapting them to specific decision-making tasks.
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Cloudflare Introduces CLI for AI Agents, Sunsetting Wrangler
Cloudflare recently launched the open beta of cf, a new open-source, agent-focused command-line interface for interacting with Cloudflare services through a unified CLI. Written in TypeScript, it provides structured output and command discovery to make Cloudflare’s APIs easier for both developers and AI agents.
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Cloudflare Fixes Cross-Tenant Data Exposure in Containers
Cloudflare has disclosed a cross-tenant data exposure vulnerability in Containers and Sandboxes, caused by thin-provisioned storage pools configured to skip zeroing reused blocks. Researchers recovered directory structures, database pages and complete SQLite databases across four continents. Cloudflare remediated it and found no evidence of exploitation.
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Cloudflare Adds Configurable HTTP Vary Header Support to Prevent Cache Thrashing
Cloudflare has implemented native support for the HTTP Vary header across its edge network, enhancing cache management for all customer plans. This feature allows for better negotiation of content representations while minimizing cache fragmentation. Operators can define specific behaviors for request headers, enabling greater control over caching efficiency and reducing server load.