Master Queue & Deque Problems in Python
Queues look simple on paper, but they quietly decide how real systems behave under pressure. ⏱️ Estimated reading time: 12 minutes Generally accepted, queuing (queue) is a first-in-first-out ( FIFO ) data structure. In reality, queues are used in many non-academic contexts as a means of survival. All systems that deal with any kind of traffic, task, request, or data at scale eventually face this same fundamental problem: it is impossible for everything to be processed simultaneously. When traffic arrives at a system faster than it can be processed or handled, that system needs to determine what stays in the queue, what is dropped, and the order in which it will process traffic. At this point, we begin to view queues as more than just a structure for storing data; they also represent the design of a system. In large-scale systems (i.e., an e-commerce site selling out of an item due to demand and the associated product returns and replacement orders; an online video platf...