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Compiler Explorer in 2026: Sandboxes, Storage & Strangers' Code
Matt Godbolt
On Day 2 at 14:30 (CET/Berlin) in Track A [Saphir Room and online]
Compiler Explorer looks simple: type code, get assembly. Underneath: a fleet of sandboxed machines running hundreds of compilers across dozens of languages, terabytes of binaries to keep current, and the ongoing problem of executing arbitrary code from internet strangers.
A lot has changed in the 14 years that the site has been around: The sandboxing layers that let it run other people's code without us losing sleep. The storage situation that very nearly broke it, and the content-addressable filesystem that rescued everything. The operational war stories, the migration sagas, and the bits that are far more boring than they look from the outside. Along the way you'll see some of CE's recent features in their natural habitat, and get a peek at what's coming next.
You'll come away with a working mental model of how we run untrusted compilation at scale - and why the parts that look easy are almost always the hard ones.
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