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I’ve spent some time over the last few weeks reading about the various *nix init systems: venerable SysV, interim replacement Upstart, controversial monolith systemd, Apple’s proprietary launchd, and niche variants like runit and Epoch. Lots of history, lots of flame wars. One key takeaway: socket activation is a breathtakingly elegant way to parallelize system startup. In every modern operating system, boot consists of starting hundreds of processes and waiting for them to initialize. Most depend on ...

By Ryan Barrett