Does meta use C++?

Yes, Meta (formerly Facebook) uses C++ extensively, especially for performance-critical systems that require high efficiency and low latency. C++ is employed in a variety of back-end services that power Meta’s platforms, such as Facebook, Instagram, and WhatsApp.

How Meta Uses C++:

1. Backend Infrastructure:

   • C++ is used for large-scale, high-performance systems such as the News Feed, real-time messaging systems (like Facebook Messenger), and other backend services that need to handle large volumes of data and users in real-time.

2. Performance-Critical Applications:

   • Meta uses C++ for its performance and control over system resources. The language is ideal for building systems that require low latency and high throughput, which is crucial for platforms with billions of users.

3. Data Processing and Infrastructure:

   • Meta uses C++ to power many of its data processing tools and internal infrastructure. For example, systems that handle real-time data streaming and processing use C++ for optimal performance.

Example Use:

• The News Feed at Meta, which processes and serves content to millions of users in real-time, uses C++ to ensure that the system remains fast and scalable.
• Facebook Messenger also leverages C++ for its real-time messaging infrastructure due to the need for low-latency communication.

Sources:

• Meta Engineering Blog
• Glassdoor Meta Engineering Reviews

In summary, C++ plays a critical role at Meta for building and maintaining large-scale, high-performance systems.