--- title: Taking OCaml and Eio for a spin | daily.dev description: A hands-on exploration of OCaml and the Eio concurrency library. Covers learning resources (Real World OCaml and CS3110), OCaml's syntax and feel, and a... canonical: https://daily.dev/posts/taking-ocaml-and-eio-for-a-spin-rpixihrbr twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Taking OCaml and Eio for a spin | daily.dev og:description: A hands-on exploration of OCaml and the Eio concurrency library. Covers learning resources (Real World OCaml and CS3110), OCaml's syntax and feel, and a... og:url: https://daily.dev/posts/taking-ocaml-and-eio-for-a-spin-rpixihrbr og:image: https://api.daily.dev/og/posts/RpIxIhrBr.png og:image:alt: Taking OCaml and Eio for a spin og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Taking OCaml and Eio for a spin **[Lobsters](https://daily.dev/sources/lobsters)** · 10 min read · 0 upvotes · 0 comments ## Summary A hands-on exploration of OCaml and the Eio concurrency library. Covers learning resources (Real World OCaml and CS3110), OCaml's syntax and feel, and a practical walkthrough building a simple RPC client/server using Eio's effects-based concurrency primitives — fibers, switches, streams, and promises. The author implements a concurrent RPC client that multiplexes requests over a single connection using a write queue and promise-based response routing, with a goal of eventually implementing the Raft consensus algorithm. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Eon](https://daily.dev/posts/eon-gpbljff0k) · Lobsters · 1 upvotes · 0 comments - [Ruby Concurrency: What Actually Happens](https://daily.dev/posts/ruby-concurrency-what-actually-happens-45gp61hdi) · RUBYLAND · 0 upvotes · 0 comments - [A Programmer-Friendly I/O Abstraction Over io\_uring and kqueue](https://daily.dev/posts/a-programmer-friendly-i-o-abstraction-over-io-uring-and-kqueue-a9vtfgnvg) · Hacker News · 1 upvotes · 0 comments - [Creator of OCaml: Functional Programming, Formal Verification, Programming Languages](https://daily.dev/posts/creator-of-ocaml-functional-programming-formal-verification-programming-languages-xiut59vvr) · The Developing Dev · 1 upvotes · 0 comments --- Tags: [#functional-programming](https://daily.dev/tags/functional-programming), [#ocaml](https://daily.dev/tags/ocaml) [View this post on daily.dev](https://daily.dev/posts/taking-ocaml-and-eio-for-a-spin-rpixihrbr) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Taking OCaml and Eio for a spin","url":"https://daily.dev/posts/taking-ocaml-and-eio-for-a-spin-rpixihrbr","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/taking-ocaml-and-eio-for-a-spin-rpixihrbr"},"datePublished":"2026-07-23T23:51:03.089Z","dateModified":"2026-07-24T02:22:14.821Z","description":"A hands-on exploration of OCaml and the Eio concurrency library. 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