HighFile-scopeC# Plug & play

Await async operations properly

Await Tasks instead of blocking (no .Result or .Wait()); prefer async/await end-to-end and configure awaits appropriately.

Why this matters

Prevents deadlocks, thread pool starvation, and lost exceptions.

Side-by-side examples engineers can pattern-match during review.

Avoid

var data = http.GetStringAsync(url).Result; // blocks

Prefer

var data = await http.GetStringAsync(url);

Bad

task.Wait();

Good

await task;

From the same buckets as this rule.

Critical
Avoid Blocking Calls to Async Methods
Blocking async methods with `.Result` or `.Wait()` can cause deadlocks and prevent efficient asynchronous execution. Use `await` instead for proper async behavior.
concurrency-safetyperformance-efficiency
Critical
Do Not Call `wait()` When Holding Multiple Locks
Ensure that `wait()` is not called while holding multiple locks to prevent deadlocks.
concurrency-safety
High
Avoid Using Mutable Global Variables
Identify global variables that are mutable (e.g., lists, dictionaries). Global mutable state can cause unpredictable behavior. Recommend using local variables or encapsulating state in a class.
concurrency-safetymaintainability+1