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Computer Science > Programming Languages

arXiv:2412.02107 (cs)
[Submitted on 3 Dec 2024]

Title:Efficient, Portable, Census-Polymorphic Choreographic Programming

Authors:Mako Bates, Shun Kashiwa, Syed Jafri, Gan Shen, Lindsey Kuper, Joseph P. Near
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Abstract:Choreographic programming (CP) is a paradigm for implementing distributed systems that uses a single global program to define the actions and interactions of all participants. Library-level CP implementations, like HasChor, integrate well with mainstream programming languages but have several limitations: Their conditionals require extra communication; they require specific host-language features (e.g., monads); and they lack support for programming patterns that are essential for implementing realistic distributed applications.
We make three contributions to library-level CP to specifically address these challenges. First, we propose and formalize enclaves and multiply-located values, which enable efficient conditionals in library-level CP without redundant communication. Second, we propose end-point projection as dependency injection, a design pattern that enables library-level CP in host languages without support for monads. Third, we propose census polymorphism, a technique for abstracting over the number of participants in a choreography. We demonstrate these contributions via implementations in Haskell, Rust, and TypeScript.
Comments: Submitted to PLDI25
Subjects: Programming Languages (cs.PL)
Cite as: arXiv:2412.02107 [cs.PL]
  (or arXiv:2412.02107v1 [cs.PL] for this version)
  https://doi.org/10.48550/arXiv.2412.02107

Submission history

From: Mako Bates [view email]
[v1] Tue, 3 Dec 2024 03:00:52 UTC (154 KB)
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