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http4s notes for developers

Master http4s with a curated set of 2 developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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01 · http4s

http4s: Composing Routes, Middleware & When It Fits

http4s: Composing Routes, Middleware & When It Fits. Combining Routes. val allRoutes = userRoutes <+> orderRoutes <+> healthRoutes // Combines multiple HttpRoutes[F] values into one, // trying each in turn until one matc…

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02 · http4s

http4s Fundamentals: HttpRoutes, Effects & Pattern Matching

http4s: HttpRoutes, Effects & Pattern Matching. http4s is a purely functional, type-safe HTTP library for Scala, typically integrated with an effect system like Cats Effect. Requests and responses are modeled as immutabl…

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