Building a Crypto Trading Bot: Why Infrastructure Beats Strategy Every Time

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A developer building a cryptocurrency trading bot called CryptoBot found that the trading strategy itself was the easiest part of the project. The real engineering challenges emerged from system reliability issues such as WebSocket disconnections, stale market data, and unconfirmed order executions. The developer redesigned the bot's architecture to include validation, risk management, reconciliation, and recovery steps beyond the basic signal-to-order flow. One key insight was that a reconnected WebSocket does not mean a synchronized system, requiring the bot to check what events it missed before resuming trades. The developer also implemented a data-freshness check that halts trading when market data exceeds five seconds old, treating the pause as risk control rather than a failure.

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