Cap'n Proto
Cap'n Proto is a high-performance data interchange format and capability-based RPC (Remote Procedure Call) system. It allows for fast serialization and deserialization of structured data without the need for parsing or copying, making it ideal for low-latency applications. It is designed to be efficient, with zero-copy semantics and support for complex data structures like object capabilities.
Developers should learn Cap'n Proto when building systems that require ultra-fast data serialization, such as high-frequency trading, real-time gaming, or distributed systems with strict latency requirements. It is particularly useful in scenarios where traditional serialization formats like JSON or Protocol Buffers introduce too much overhead, and its capability-based RPC adds security by controlling access to resources.