The ConcurrentStack and ConcurrentQueue classes, lock-free and thread-safe implementations of the Stack and Queue classes, build thread safe collections in .Net Thread safe collections were first ...

You can create lists that function as stacks (first in, last out lists) or queues (first in, first out lists).

Q. What is a data stack? A. Okay good, we’re glad you asked, let’s have a reminder. Data comes in many shapes and forms (obviously), but two of its core ‘structures’ are stacks and queues.