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Domain-Driven Technical Indicators: A Journey from Booleans to Value Objects

· 5 min read
Max Kaido
Architect

In our recent work on the Mercury TA service, we encountered an interesting challenge with our Ichimoku Cloud indicator implementation. The issue arose from using primitive boolean values to represent complex market states, leading to ambiguous and sometimes incorrect interpretations. This post outlines our three-step solution to create a more robust and maintainable technical analysis API.