Free monads have a very difficult path in the Haskell community. For a long time, it was considered that Free monads aren't that good: lack of performance, inability to work with exceptions, too complex theory behind them. But it turned out that it's all myths. Free monads, when used right, can be fast, simple, and provide additional power like exceptional exception handling.

In this talk, Alexander will discuss Free monadic solutions his team uses at Juspay. How they approach our business tasks, what the application architectures are, design patterns, and best practices.

Alexander Granin is a software architect, world-class Haskeller, speaker, researcher, author, Haskell consultant, and expert C++ developer. He is the author of the fundamental book "Functional Design and Architecture" about high-level software design in Haskell and FP.
He has more than 14 years of professional experience, and his personal interest and goal is to make Haskell more popular and increase its adoption by industry. Alexander is…