The ultimate guide to C# concurrency interviews. Developed by FAANG engineers, it covers multithreading, Monitors, Deferred Callbacks, and solutions to Reader-Writer, Dining Philosopher Problems.

Concurrency in C# is one of the most complex and advanced topics brought up during senior engineering interviews. Knowledge of concurrency and multithreading can put interviewees at a considerable advantage. This course lays the foundations of advanced concurrency and multithreading and explains concepts such as Monitors and Deferred Callbacks in depth. It also builds simple and complete solutions to popular concurrency problems like the Reader-Writer and Dining Philosopher Problems that could be asked about in interviews. While prior knowledge of concurrency is not required to finish this course, familiarity with the basics of C# would be helpful.

C# Concurrency for Senior Engineering Interviews

public void enqueue(int data)
{
    Monitor.Enter(items);
    while (currentSize == maxSize)
    {
        Monitor.Wait(items);
    }

    if (tail == maxSize) tail = 0;

    items[tail] = data;
    currentSize++;
    tail++;
    Monitor.PulseAll(items);
    Monitor.Exit(items);
}

This lesson explains implementing a bounded buffer using the Monitor class.

Basics

API Overview

Brief Intro to Asynchronous Programming

Interview Practice Problems

The End

... continued

Monitor Implementation