Load testing a checkout for Black Friday
How to build a load model from last year data, what to break on purpose, and the four numbers that decide whether your checkout is ready…
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Insights
Notes from production written by the engineers who did the work, using numbers from systems that are live.
What a 0.8 second LCP is actually worth in revenue
Field data from four storefronts, the conversion delta per LCP bucket, an honest separation of correlation from causation, and where the milliseconds actually came from.
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Replatforming without losing a single URL
The URL inventory, mapping rules, template parity checks and eight week monitoring plan we use to move a large catalogue without giving up organic traffic.
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Bring us a commerce problem worth solving
Storefront performance, a checkout that leaks revenue, an ERP link nobody trusts, or a replatform you cannot afford to get wrong. Send the brief and we will come back with a written plan.