Using Free Applicatives and Handle Pattern for Remote System Optimization
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_jackdk_
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Summary
The article discusses using free applicatives and the handle pattern to optimize interactions with remote systems, specifically for batching and testing operations in enterprise resource planning (ERP) systems. It explains how applicative functors provide static control flow that enables static analysis of requests without execution, allowing for query batching without data dependency concerns. The approach addresses challenges with remote systems that have idiosyncrasies and require efficient data manipulation.
Key quotes
· 4 pulledApplicative functors have a completely static control flow, and cannot express computations where one step depends on the result of a previous step.
A well-chosen applicative would let us analyse the requests we need to send without executing any of them, batch queries together without worrying about data dependency.
Using free applicatives and the handle pattern to batch, optimise and test interactions with remote systems.
We recently refactored some gnarly code that manipulated customer and order records in our enterprise resource planning (ERP) system.
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