WebSocket vs REST API: I Deleted 150 Lines and Nothing Broke
I spent weeks building a WebSocket price feed. Then I realized I didn’t need it at all.
Engineering
The Timezone Bug That Cost Me 9 Hours of Trades
My bot was missing every trade for the first 9 hours of each day. The cause? Mixing UTC and KST in one line of code.
Binance API Gotchas That Will Waste Your Weekend
A collection of Binance Futures API quirks that aren’t in the documentation. Each one cost me hours.
The 3 AM Bug: PID Lockfiles and Duplicate Processes
My bot was running twice. Two instances, same account, doubling every order. Here’s how PID lockfiles saved me.
What Happens When Your Bot Crashes at 3 AM
Your bot will crash. At night. On a weekend. With open positions. Here’s how to make sure it recovers gracefully.