AAArslan Ahmadinsystemdesigndg.hashnode.dev·Jun 28 · 11 min readWhat Interviewing 1,000+ Engineers at Meta and Microsoft Taught Me About System Design RoundsI have sat on the other side of the table for more system design interviews than I can count. At Meta and Microsoft, across hiring committees and debrief rooms, I watched brilliant engineers walk out 00
AAArslan Ahmadinsystemdesigndg.hashnode.dev·Jun 21 · 15 min readA 60-Minute Daily Routine for Learning System DesignMost engineers do not struggle with system design because they lack intelligence. They struggle because system design feels too broad. One day, you are learning caching. The next day, you are reading 00
AAArslan Ahmadinsystemdesigndg.hashnode.dev·Jun 21 · 11 min readGrokking System Design: Caching, Sharding, Replication, and Load Balancing ExplainedEvery large system you use rests on a handful of core ideas. Strip away the brand names and the buzzwords, and you keep running into the same four. Caching, load balancing, replication, and sharding. 00
AAArslan Ahmadinsystemdesigndg.hashnode.dev·Jun 21 · 12 min readMessage Queues Explained Through Real System Design ExamplesMost beginners learn what a message queue is from a textbook definition. A producer sends a message, a queue holds it, a consumer reads it. Fine. But that definition tells you nothing about why messag00
AAArslan Ahmadinsystemdesigndg.hashnode.dev·Jun 21 · 12 min readReplication vs. Sharding: A Practical System Design GuideEvery growing system hits the same wall. One day your single database hums along just fine. The next day it is slow, overloaded, and one bad query away from taking your whole app down. When that happe00
