System Design Interview Alex Wu Pdf [top] | Essential

Sharding strategies, indexes, and replication lags.

When data outgrows a single database instance, you must partition it horizontally (sharding).

: What features are we building? (e.g., "Can users post comments, or just view them?") system design interview alex wu pdf

For preparation, (often misstated as Alex Wu) System Design Interview – An Insider’s Guide

1. Scope the Problem (Functional & Non-Functional Requirements) Sharding strategies, indexes, and replication lags

Never start drawing architecture immediately. You must define the boundaries of the system.

: Create a basic diagram showing the main components (load balancers, web servers, databases). Discuss this blueprint with the interviewer before diving into details. "Can users post comments

Yes—as a reference , not a script .