Tagged
engineering
Filter by tag
How an idempotency key stops a duplicate transfer from ever happening twice
A network hiccup makes you tap send again. Here is the real, two-layer mechanism that guarantees only one transfer ever happens.
1 Sept 2026 · 3 min read
Why we built the ledger first
Before a single customer-facing screen existed, PrimeEx had a double-entry ledger. Here is why that ordering mattered.
18 Aug 2026 · 3 min read