Quick Answer
The .NET memory model defines what ordering guarantees threads have. Without synchronization, the CPU or compiler may reorder reads and writes. volatile ensures visibility (no caching), lock adds full memory barriers, and Interlocked provides atomic operations. Writing lock-free code correctly requires understanding all three.
Answer
The .NET Memory Model defines visibility and ordering guarantees:
Reordering may occur unless prevented by barriers.
volatile ensures visibility but not atomicity.
lock, Monitor, Interlocked insert full memory fences.
Handles cache coherency, tearing, and ABA issues.
More relaxed than Java regarding visibility rules.
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.
