Optimizing Userver Framework Scheduler

The userver framework is a high-performance, asynchronous open-source project developed in C++. It is designed to enhance the scalability of microservices across a wide range of applications. At the core of this framework is a task scheduler that ensures optimal distribution and execution of coroutines, which directly impacts application performance. This work aims to research the improvement and optimization of the scheduler's task queue, responsible for handling coroutines by a specific thread. The primary goal is to minimize bottlenecks in the current implementation that cause excessive thread contention and achieve more efficient resource utilization, especially under peak loads. The plan is to transition from a synchronous queue implementation to a distributed one, minimizing thread contention when adding and retrieving tasks in the scheduler. As a result, a new task queue and its components will be developed in C++, leading to a significant improvement in task processing efficiency.