Edge computing

Running logic in points of presence close to users removes the round trip to a central region for redirects, personalisation or authentication. Anything that needs central data still pays that trip.

Where it shows up in real systems

  • Edge function

    Ideal for redirects, A/B tests, authentication checks and personalisation without a round trip to your region. Execution time and memory are tightly limited, and anything that needs your database still pays the trip back to it.

    In production: Cloudflare Workers, AWS Lambda@Edge, CloudFront Functions, Vercel Edge Functions, Fastly Compute

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