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Edge Function Cold Start Latency Under WASM Workloads : Multi-Tenant Isolation Under Shared Edge Resources

RustWasmtimeCloudflare Workerswasm-bindgen

Problem Breakdown

The isolation defect appears when multiple tenants share edge compute and cache: one tenant's traffic pattern (a burst, a pathological cache-miss loop, a runaway script) consumes a disproportionate share of shared CPU, memory, and cache space, degrading every co-tenant. Edge functions compiling to WASM carry 10-40MB mo…

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