Folly
A C++20 library from Facebook focused on performance and practicality, complementing std and Boost with components used at scale.
What is Folly?
Folly is an open-source C++20 library developed and used extensively at Facebook, designed with practicality and efficiency in mind. It provides performance-optimized components that complement standard libraries like std and Boost, focusing on solving real-world problems at massive scale. The library serves as a shared dependency for Facebook's other open-source C++ projects and contains battle-tested code for production environments.
C++ developers working on performance-critical systems, large-scale applications, or projects requiring production-proven components beyond what std and Boost offer. Particularly valuable for teams building infrastructure software or high-performance services.
Developers choose Folly for its performance-optimized components that have been proven at Facebook's scale, its practical approach that complements rather than replaces existing standards, and its focus on solving real-world efficiency problems that aren't adequately addressed by std or Boost alone.
Overview
An open-source C++ library developed and used at Facebook.
Use Cases
Best For
- Building high-performance C++ services requiring optimized data structures
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