Find published research by company, product, platform or technology.
Showing 1–20 of 39 dossiers
The architectural shift is from application-wide container configuration toward individually managed stateful compute. A Durable Object can now start its own image and size, keep an independent lifecycle and restore filesystem state without treating every instance as part of one rollout.
This was not a Firecracker escape or access to a live victim disk. It was a storage-isolation failure underneath the sandbox: researchers recovered foreign directory structures, database pages and complete SQLite databases from reused blocks, and Cloudflare had to fix allocation plus retire existing disks and cached snapshots.
The interesting change is not another CLI rename. Cloudflare is redesigning its command surface around software agents: JSON is the default, commands can be discovered through natural-language search, configuration is typed TypeScript, and Wrangler now has an eventual migration path.
The replacement is not a drop-in path rename: Cloudflare separates domain search, availability checks and registration operations into newer endpoints, so old registrar automation can break after the cutoff.
Branch previews are common for frontend code, but Worker Previews extends the boundary to the runtime itself. Each branch can have independent bindings, state and logs, making parallel human and agent work safer while preserving a production-like execution path.
The Hyperdrive integration was the practical database unlock; the larger September 21 change is that Python Workers themselves are now GA. Cloudflare is explicitly positioning Python as a production language on Workers, with native platform bindings and framework support rather than an experimental compatibility layer.
The GA matters less as a label than as an architecture boundary. New Cloudflare WAN and Magic Transit deployments are now recommended onto a single routing fabric spanning Cloudflare One Client, Tunnel, IPsec, GRE and CNI, while legacy routing lacks several of the newer traffic-steering capabilities.
Cloudflare’s crawler controls now distinguish between refusing AI training and refusing the crawler itself. The new Disallow AI Training option is designed to keep search discoverability while expressing a training opt-out to operators that meet Cloudflare’s Accountable requirements.
The useful change is containment rather than another browser-agent feature. Teams can let an agent operate a real browser while constraining its HTTP and HTTPS reach to the site and dependencies the task actually needs, reducing the blast radius of prompt injection, bad tool decisions or untrusted page content.
The change is separate from post-quantum TLS. DNSSEC signatures authenticate DNS records, and ML-DSA-44 makes them dramatically larger — 2,420 bytes per signature — while dual-signing with older algorithms creates a downgrade path unless resolvers enforce the post-quantum chain deliberately.
The useful shift is automation at the CDN-to-origin boundary: operators no longer need to manually force post-quantum key exchange, while Cloudflare says its measured HelloRetryRequest rate fell from about 52% to 3.7% across the scanned cohort.
The change makes heavier frameworks and dependency trees deployable to Workers without plan-specific compressed-size ceilings, but it also changes what builders need to measure: the operative limit is now uncompressed Total Upload rather than the gzip number they may have optimized around.
Cloudflare has inverted a long-standing Workers assumption: Node.js compatibility is now on by default for current compatibility dates. That reduces setup friction for many npm packages, but it also means developers need to understand compatibility-date boundaries, partial APIs and explicit opt-out flags.
The interesting part is not another AI scanner. Cloudflare is connecting source-code evidence to what is actually deployed and being attacked at the edge, validating findings outside the model, then preparing both a code patch and, where appropriate, a narrowly scoped WAF mitigation for customer review.
Cloudflare’s first half-year DDoS report records 935 network-layer attacks above 1 Tbps and a 519% Q1-to-Q2 increase, but says 96.62% of attacks stayed below 500 Mbps and 90.60% ended within 10 minutes. The figures are Cloudflare-network telemetry, not a neutral census of the internet.
The limits themselves were already documented; the material change is enforcement. Free-tier D1 workloads that previously relied on soft overage behavior now need query-cost awareness, indexes and a plan for temporary failures or paid migration.
The new 10-worker ceiling is a niche but concrete scaling change for platforms using Cloudflare Dynamic Workers as agent code sandboxes, generated-app runtimes or multi-tenant automation workers. Ordinary Worker requests remain capped at four distinct Dynamic Workers in flight.
Cloudflare Workflows now prices steps and persisted state on paid plans, making workflow structure and retention part of the cost calculation for durable jobs and AI automation.
Cloudflare’s RUM measurement model now distinguishes hard navigations, native soft navigations and routing-API fallbacks. For React, Vue, Angular, Svelte and other client-routed sites, the immediate consequence is a metric discontinuity: pageviews and Core Web Vitals can shift without an underlying traffic change.
R2’s new `us` jurisdiction gives object-storage users an explicit US data-residency guarantee, with jurisdiction-specific S3 endpoints and Workers bindings. Existing unrestricted buckets cannot simply be flipped into the new jurisdiction because jurisdiction is immutable after creation.