Compiler Explorer: 92 Million Compilations a Year and Still Going Strong

2025-06-08

Compiler Explorer, the online compiler exploration website, handles a staggering 92 million compilations annually. This article dives deep into its architecture, from the Monaco editor frontend and CloudFront/load balancer to the secure sandboxing with nsjail. To manage this massive workload, it leverages AWS autoscaling and boasts nearly 4TB of over 3000 compiler versions supporting 81 languages. The author details the challenges and solutions in security, version management, cross-platform support (Windows, ARM, and GPU), and cost optimization, showcasing the evolution from a weekend project to a robust platform serving thousands of developers.

Development