Cloudflare Playground
This page is a static file served by Cloudflare Pages. The buttons call a separate Worker that uses D1 and R2.
PAGES + PAGES FUNCTIONS
Same-origin serverless function
/api/hello is a file in functions/ — Pages turns it into a Worker route on the same domain as this page.
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WORKERS · V8 ISOLATES
Watch an isolate get reused
Click several times. Same isolateId + rising counter = warm isolate, no cold start.
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D1 · SQLITE
Notes table
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R2 · OBJECT STORAGE
Upload a file
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SHARDING · 2 × D1
Users split across shards by hash(email)
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