Cloudflare Workers
Cloudflare Workers is a serverless edge computing platform provided by Cloudflare, enabling developers to deploy and run JavaScript, TypeScript, WebAssembly, and other code on Cloudflare's globally distributed edge nodes. Core characteristics include executing code at network edges close to users to reduce latency, eliminating the need to manage server infrastructure, and supporting an elastic per-request billing model. It is suitable for building APIs, proxies, static site enhancements, and edge logic processing.
Core Facts
Cloudflare Workers runs code based on V8 Isolates rather than container technology, with startup times typically within 5 milliseconds.
Cloudflare Workers is an edge computing platform based on V8 Isolate technology, running across Cloudflare's 300+ data center nodes distributed globally.
Previously, Cloudflare Workers was primarily oriented toward JavaScript and WebAssembly-based languages
Timeline (last 90 days)
Platforms such as Cloudflare Workers, Vercel Edge Functions, and AWS Lambda are all affected by cold starts, in which synchronous evaluation during the module import phase is directly counted toward cold start time.
The Cloudflare Workers platform needs to quickly validate and transform user-submitted TypeScript code on the server side, and using a Node.js runtime would make cold starts and resource overhead unacceptable.
When a service on Deno Deploy calls a Worker, and the Worker fetches back to the same Deno service, Cloudflare copies the inbound cdn-loop: deno;d=<hash> header to the outbound subrequest at the C++ edge layer, causing Deno Deploy to return 508 Loop Detected.
Cloudflare Workers prohibits new Function, so Zod v4 needs to be set to jitless: true.
An ordinary Cloudflare Worker is stateless, and 50 requests will spin up 50 random isolates that do not share anything.
ctx.waitUntil() has a 30-second wall-clock limit: after the Worker returns HTTP 200, background tasks are forcibly cut off after 30 seconds even if cpu_ms: 300000 is configured.
The prompt2bot team completed a migration from Deno Deploy to Cloudflare Workers + SQLite Durable Objects, with a codebase of 100,000 lines.
In Workers code, the API for reading KV is asynchronous, and developers can dynamically fetch the latest flag values during request handling without restarting or redeploying.
A developer running a small application on Cloudflare Workers uses a single Workers KV key to control three states of debug logging (off, admin, all), thereby dynamically switching diagnostic levels without deploying.
Cloudflare Workers KV is a globally distributed low-latency key-value storage service designed specifically for scenarios running Workers at the edge, using an eventual consistency model.
40 more timeline events
All Facts (20)
Cloudflare Workers runs code based on V8 Isolates rather than container technology, with startup times typically within 5 milliseconds.
80%VerifiedCloudflare Workers is an edge computing platform based on V8 Isolate technology, running across Cloudflare's 300+ data center nodes distributed globally.
80%VerifiedPreviously, Cloudflare Workers was primarily oriented toward JavaScript and WebAssembly-based languages
65%VerifiedCloudflare Workers use V8 Isolate isolation technology, with each Isolate having a memory overhead of only approximately 128 KB, and the Workers free tier provides 100,000 requests per day.
65%VerifiedThe project is written in TypeScript and leverages serverless capabilities such as Cloudflare Workers and Pages.
65%VerifiedDurable Objects are stateful compute units on the Cloudflare Workers platform; each object has its own in-memory state and persistent storage, and only one instance of the same object ID runs at any given time.
65%Unverified这两个站点使用的技术栈是Python脚本 + Jinja2模板生成静态HTML，部署到Cloudflare Workers
95%UnverifiedCloudflare Workers生态中的Durable Objects为有状态的Agent工作流提供强一致性的状态存储
90%Unverified静态HTML部署到Cloudflare Workers后，内容直接从CDN边缘节点分发，无需服务器计算，几乎没有运维负担
90%Unverified边缘计算平台对前端开发者的竞争参与者包括AWS Lambda@Edge、Deno Deploy、Fastly Compute等
85%UnverifiedEdge Functions在CDN边缘节点上运行，冷启动时间通常在5ms以内，典型实现包括Cloudflare Workers、Vercel Edge Functions和Supabase Edge Functions
80%UnverifiedIn addition to Cloudflare Workers, similar edge Serverless platforms include AWS Lambda@Edge, Vercel Edge Functions, and Deno Deploy.
60%UnverifiedThe Cloudflare Sandbox SDK is based on the V8 isolation mechanism of its Workers runtime
60%UnverifiedCloudflare has edge nodes in more than 300 data centers worldwide, and Workers cold start time is typically within 5 milliseconds.
60%UnverifiedPlatforms such as Cloudflare Workers, Vercel Edge Functions, and AWS Lambda are all affected by cold starts, in which synchronous evaluation during the module import phase is directly counted toward cold start time.
50%UnverifiedThe Cloudflare Workers platform needs to quickly validate and transform user-submitted TypeScript code on the server side, and using a Node.js runtime would make cold starts and resource overhead unacceptable.
50%UnverifiedCloudflare Workers prohibits new Function, so Zod v4 needs to be set to jitless: true.
50%Unverifiedctx.waitUntil() has a 30-second wall-clock limit: after the Worker returns HTTP 200, background tasks are forcibly cut off after 30 seconds even if cpu_ms: 300000 is configured.
50%UnverifiedAn ordinary Cloudflare Worker is stateless, and 50 requests will spin up 50 random isolates that do not share anything.
50%UnverifiedWhen a service on Deno Deploy calls a Worker, and the Worker fetches back to the same Deno service, Cloudflare copies the inbound cdn-loop: deno;d=<hash> header to the outbound subrequest at the C++ edge layer, causing Deno Deploy to return 508 Loop Detected.
50%