ulo
A macro that cannot see a type's impl block should emit the same call for every type and let method resolution choose the definition.
unpublished · in development · ulo-rs/ulo ↗
Ifeanyi
Systems engineer
Work
A 24-hour hold on the seller's share
The seller's share of every voucher sale waited 24 hours for a possible dispute.
Voucher marketplace · backend · 2024 to 2025
An ffmpeg relay between every camera and Cloudflare
A camera fixed to a court streamed only while a paid session ran.
Live-streaming platform for sports venues · contract · 2025 to 2026
Liquidation that ran only when the client polled
A margin check every 30 seconds replaced one that ran when the account screen loaded.
Forex trading platform · contract · 2025
Fixing money calculations with no automated tests
Each fix to leverage, margin and liquidation was tried by hand in staging before release.
Forex trading platform · contract · 2025
Lab
winston
A backpressure policy takes effect only at the first queue that can fill.
0.8.2 on crates.io · rework on a branch · ifeanyi-ugwu/winston_logger_rs ↗
graphql-scalars
A custom scalar should reject what can be judged from the value alone and pass everything else through to the resolver.
Contributed upstream: GeoJSON and CountryName in 1.24.0 · ULID and Cuid2 in 1.25.0 · graphql-hive/graphql-scalars ↗
Slippage tolerance derived from staleness
A price-deviation guard needs a tolerance per instrument, sized to how stale the client's quoted price can be.
Position · from a forex trading platform, 2025
Liveness observed by the server
A guard's idleness is a conclusion the server draws from the time since the last reported activity.
Design for a security workforce platform · backend unbuilt
Billing scheduled hours, paying worked hours
A client is billed the hours scheduled and a guard is paid the hours worked.
Design for a security workforce platform · backend unbuilt
A discrepancy register
A working system that is shaped wrong is evidence of what the business needs.
Design for a security workforce platform · backend unbuilt