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++ 系統和效能關鍵型服務的主要後端工程智慧。行動：規劃、設計、建置、實施、審查、修復、最佳化、重構、調試、安全性、擴展後端程式碼和架構。重點：正確性、記憶體安全性、延遲、可靠性、可觀察性、可擴展性、可操作性。 來源：prakharmnnit/skills-and-personas。