Every Saturday: four to six things worth knowing from the week in industry engineering — distributed systems, architecture, AI infrastructure, platform and reliability. Primary sources, concrete tradeoffs, no vendor copy. About a five-minute read.
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GitHub measures 7.38 billion commits a month before rebuilding Git storage, Meta signs NTP packets at nts.meta.com, Stripe cuts a payment-method integration from 20 engineer-days to 4 with reusable prompts, Shopify tests shopping agents on 224 tasks across six sandbox shops, and Pinterest grades every metric from Unknown to A+ before an agent may quote it.
Git 2.56 stops merge-base walks early, Cloudflare ships a fully replicated KV and a broker-less log on R2, Uber puts a review gate on auto-discovered agent tools, and GitHub's security agent finds 24 Android bugs.
Stripe writes its own data plane, Uber constrains shard placement to shrink blast radius, and Cloudflare reclaims 100 TB by rearranging structs. Six items from the week in industry engineering.