Answer
- Excess allocations
- Boxing
- Heavy LINQ in hot paths
- Lambdas capturing hidden allocations
- Blocking async
- Excessive locking
- Exceptions for flow control
Quick Answer
Senior .NET performance traps: boxing value types in collections, sync-over-async (blocking .Result or .Wait()), capturing too-large closures in LINQ or lambdas, using string concatenation instead of StringBuilder in loops, large LOH allocations, excessive reflection, and not using Span or Memory for high-throughput buffer operations.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ