← 📦 Data Structures
24 / 25
Lesson 24 — LRU cache
Evict the oldest
An OrderedDict tracks use order so the least-recently-used item is dropped when full.
Why it matters: it is a classic systems-design data structure.
Not clear enough?
Task
Use the LRU cache with capacity 2.
🧠 Test your knowledge
A quick 3-question quiz on this lesson — instant feedback.
Keep going with Data Structures
Ready for more? These paid resources pick up where this lesson leaves off.
UdemyBestsellers
Top-rated Data Structures courses
Project-based Data Structures video courses — the perfect paid next step after these free lessons.
Browse on Udemy →AmazonReader picks
Best Data Structures books
Hand-picked Data Structures books to master the fundamentals offline.
See on Amazon →Some links on this page are affiliate links: we may earn a commission at no extra cost to you. We only recommend tools we believe are genuinely useful.