HHVM is a just-in-time (JIT) compiler that converts Hack and PHP code into highly optimized machine code at runtime. JavaScript: Used for all client-side interactions and powered by the React framework.
How Facebook Uses HHVM to Optimize Performance with JIT Compilation
Behind the scenes, this experience is powered by a complex stack of technologies, and at the heart of the backend logic lies a specific programming language. The company did not rely on a single tool but rather built a tailored ecosystem.
The development of HHVM was a strategic move to optimize performance and differentiate their infrastructure. This infrastructure is designed for redundancy and speed, ensuring that the code is compiled and executed as efficiently as possible to serve content to users around the world.
How Facebook Uses HHVM to Boost Performance with JIT Compilation
For the user interface, the frontend is largely built using React, a JavaScript library developed by Facebook engineers. C++: Used for performance-critical components, such as the networking stack and certain backend services where PHP might be too slow.
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