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2 posts
Isolate sharing is a Spectre channel on Workers
Workers Spectre is isolate sharing on the edge. A JWT in neighbor heap leaked at 12 bit/s in production. Keep secrets on env rather than module scope.
Deep DivesCloudflareSecurityServerlessEdge ComputingArchitectureDeveloper Tools1 min read · Aug 21, 2026
Kitesurf is the Dynamic Workers follow-up
Cloudflare Kitesurf is Dynamic Workers for browse. 3-7x less CPU and memory than Chromium. Keep Playwright. Give up looking like a person on the open web.
Strong OpinionsCloudflareAI CodingServerlessEdge ComputingDeveloper Tools1 min read · Aug 14, 2026