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Qbix Server is a pure PHP web server that handles 10x more concurrent PHP requests on the same hardware compared to Nginx+PHP-fpm by forking workers after loading classes to share memory via copy-on-write, reducing per-worker memory from 30-60MB to ~5MB.
mimalloc is an open-source, high-performance, scalable memory allocator that serves as a drop-in replacement for malloc and free. Designed for modern highly concurrent applications and large memory scales, it is used in major services like Bing and integrated into projects such as NoGIL CPython and Unreal Engine.
Antigravity 2.0 update: quota increased to 3x original, supports concurrent multi-agent execution (up to 8 agents), much faster than many domestic agents that can only run serially.