backend-principle-eng-cpp-pro-max

Principal-level guidance for C++ backend systems, low-latency services, and infrastructure. Emphasizes correctness, memory safety, and predictable performance.

| 1 | Correctness & UB Avoidance | No undefined behavior | RAII, invariants, validated inputs | | 2 | Reliability & Resilience | Fail safe under load | Timeouts, backpressure, graceful shutdown | | 3 | Security | Hard to exploit | Hardened builds, safe parsing, least privilege |

| 4 | Performance & Latency | Predictable P99 | Stable allocs, bounded queues, zero-copy where safe | | 5 | Observability & Operability | Fast triage | Trace ids, structured logs, metrics | | 6 | Scalability & Evolution | Safe growth | Statelessness, sharding, protocol versioning |

C++ 系统和性能关键型服务的主要后端工程智能。行动：规划、设计、构建、实施、审查、修复、优化、重构、调试、安全、扩展后端代码和架构。重点：正确性、内存安全性、延迟、可靠性、可观察性、可扩展性、可操作性。 来源：prakharmnnit/skills-and-personas。