Q1. What causes a deadlock and how do you prevent it?
A deadlock needs four conditions: mutual exclusion, hold-and-wait, no preemption and circular wait. Classic case: thread A locks X then waits for Y while thread B locks Y...
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Q2. What is a deadlock and how do you prevent it?
A deadlock is a set of threads each waiting for a resource held by another, so none can proceed. Four Coffman conditions must all hold: mutual exclusion, hold and wait, n...
Q3. What causes a database deadlock and how do you prevent one?
A database deadlock is a cycle where two or more transactions each hold a lock the other needs, so neither can proceed. ```text T1: UPDATE a; UPDATE b; T2: UPDATE b; UPDA...
Q4. What causes async deadlocks and how does ConfigureAwait help?
A classic deadlock happens in UI applications and classic ASP.NET when you block synchronously on async code with `.Result` or `.Wait()`. The awaited task wants to resume...
Q5. Explain the Banker's algorithm for deadlock avoidance.
The Banker's algorithm grants a resource request only if the resulting state is safe, meaning some order exists in which all processes can finish. Inputs are the maximum ...