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How to design an LRU cache that supports get and put in O(1) time using a hash map paired with a doubly linked list, with a working PHP implementation and a hands-on coding challenge.
Server Components run only on the server; Client Components hydrate in the browser. See how Next.js App Router renders both, and when to actually reach for 'use client'.
Learn how to optimize database queries in Laravel by using eager loading to prevent N+1 query problems.
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