How I Built a Python Backtesting Engine with 623 Tests
I spent the last year building a backtesting and live trading engine in Python. It started as a personal tool — I was tired of rewriting the same plum…
Architecture
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How I Cut My Anthropic API Bill by 50% With a Local Python Tool
My Anthropic bill doubled two months in a row. Not because I was building something bigger — because I kept asking the same questions, sending bloated…
AI proposed 5 components for my parallel system. After walking one scenario, only 3 were real.
TL;DR — AI loves to design "enterprise-grade" systems for you: message queue, distributed lock, state machine service, scheduler, monitoring bus. Half…