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Financial Systems
ReactNext.jsFinancial APIs
Gold Center
Gold traders in Yerevan and Moscow were stuck with prices that refreshed every 30 seconds. In a fast market, a 30-second-old price is too old to trade on.
01
What I Built
Built the sync engine from scratch — WebSockets to five exchanges at once, Redis as a fallback when one drops, and a frontend that updates individual price cells without re-rendering the whole table.
02
Project Results
Latency down from 30 seconds to 85ms. 500+ traders use it daily. 99.9% uptime over eight months.
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