Ensure thread-safe access to shared resources while following proper resource management patterns. When implementing concurrent operations: 1. Prefer worker threads over process spawning for parallel tasks 2. Use instance-based implementations instead of static instances for thread-safe access 3. Implement proper resource management using smart pointers and RAII patterns 4. Carefully manage object ownership across thread boundaries Example of proper thread-safe resource management: ```cpp // Instead of static instance class NetworkResourceManager { private: std::mutex mutex_; std::unordered_map> resources_; public: void Put(const std::string& url, std::unique_ptr data) { std::lock_guard lock(mutex_); resources_[url] = std::move(data); } // For parallel processing void ProcessResource(const std::string& url) { auto worker = std::make_unique([this, url]() { // Thread-safe resource access std::lock_guard lock(mutex_); if (auto it = resources_.find(url); it != resources_.end()) { it->second->process(); } }); worker->start(); } }; ``` This pattern ensures: - Thread-safe access to shared resources - Proper resource cleanup through RAII - Efficient parallel processing using worker threads - Clear ownership semantics using smart pointers