Here are some best practices for achieving optimal performance when using Lazy objects in C#:
Use Lazy Judiciously
Lazy should only be used for objects that are expensive to create and not always needed. For frequently used or lightweight objects, it's better to create them eagerly.
Prefer Lazy over double-checked locking
Lazy provides thread-safe initialization out of the box, avoiding the complexity and potential issues with manual double-checked locking.
Use LazyThreadSafetyMode.ExecutionAndPublication
This is the default mode for Lazy and ensures that the value is computed only once and all threads get the same instance. Other modes may lead to unnecessary recomputation.
Avoid capturing mutable state in the factory function
The factory function passed to Lazy should be a pure function that doesn't capture any mutable state. Capturing mutable state can lead to race conditions and unexpected behavior.
