These structures can be accessed using microtags in implementations of “way prediction” within them. A common instance of the thundering herd problem in distributed systems is these structures’ namesake “stampede” under load. A circular doubly-linked list is often used to implement the LRU replacement policy within these structures. Conflict, compulsory, capacity, and coherence are the four primary types of “misses” in these structures. These structures lie immediately below registers in the memory hierarchy, and in modern CPUs they are divided into L1, L2, (10[1])and L3 levels. For 10 points, name these structures that temporarily store data (10[1])for fast access, (-5[1])which web browser users may frequently “clear.” ■END■ (10[1])