Dev builds Vedic astrology SaaS on Cloudflare Workers with real ephemeris math and AI fallback

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A developer built AstroMystra, a Next.js astrology app hosted on Cloudflare Workers that performs genuine planetary position calculations for both Vedic and Western charts, rather than relying on simple lookup tables. The app uses the astronomy-engine library for tropical longitudes and applies a documented linear approximation of the Lahiri ayanamsa to derive sidereal positions for Vedic charts. AI-generated readings are produced from the calculated chart data via Google's Gemini API, which operates under a 15-requests-per-minute free-tier limit. To handle rate-limit overloads gracefully, the app implements a typed error class and an automatic model fallback chain instead of a generic catch-all error handler. The developer also documented the precision trade-offs of the linear ayanamsa approximation, noting it is sufficient for sign and nakshatra-level astrology but not for arcsecond-precision research.

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