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One year at Ahrefs

I started working at Ahrefs one year ago. When I applied I had heard of them from OCaml’s discuss amongst other OCaml community spaces and…

06 Oct 2025

Ahrefs

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Attempting overlayfs with macFuse

It would be great if overlayFS or unionFS worked on macOS! Initially, I attempted to use DYLD_INTERPOSE, but I wasn’t able to intercept enough system calls to get it to work. However, macFuse provides a way to implement our own userspace file systems. Patrick previously wrote obuilder-fs, which implemented a per-user filesystem redirection.

06 Oct 2025

Marc Elvers

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File descriptors as integers considered harmful

Continuing the previous foray into file descriptors, and trying to remove Obj.magic both from ocaml-uring’s code itself, and from the recommended way for using it.

01 Oct 2025

David Allsopp's Blog

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