autobreaker: adaptive circuit breaking
2025.319Why static failure counts break at both ends of the traffic spectrum, and a lock-free Go circuit breaker that uses percentage-based thresholds to adapt automatically.
Go
2025
2023
Earned, not handed down
2023.261The new user service got Go because it fit. A thing built compatible with the old never needs a migration mandate.
2019
The loyalty engine
2019.201Points are integers. The hard part is time, and users who think faster than your rules.
2018
The compiler as first reviewer
2018.199How a growing team adopted Go -- not through boot camps, but through code review, shadowing, and a compiler that wouldn't let anyone be sloppy.
2017
The same tree, twice
2017.265I've built a rules engine twice, in two languages, at two scales. The tree is the same.
Designing a wallet
2017.232What a digital wallet looks like underneath -- a balance, a ledger, idempotency keys, and the gap between moving money and moving money correctly.
The promocode engine
2017.201A rules engine that answers yes or no during checkout, with condition trees built by people who don't code.
2016
Switching to Go
2016.342Migrating a payment processing API from Node.js to Go -- what changed, what improved, and what we gave up.