Empty Collection Allocation Overhead

4/10 Low

Habitually allocating new empty collections (arrays, lists) instead of using cached singletons causes unnecessary memory pressure and increases Garbage Collection overhead, especially in high-frequency loops.

C#.NET
Category
performance
Workaround
solid
Stage
debug
Freshness
persistent
Scope
language
Recurring
Yes
Buyer Type
team

Sources

Collection History

Query: “What are the most common pain points with C# for developers in 2025?”4/5/2026

When returning an empty array or list, habitually `new`-ing an object causes unnecessary memory allocation. Especially in high-frequency loops or LINQ queries, this significantly increases pressure on Garbage Collection (GC).

Created: 4/5/2026Updated: 4/5/2026