Cache aside, write-through, and cache eviction policies.
Estimate data accumulation over 5 years to determine database sizing and sharding strategies. Phase 3: High-Level Architecture (Minutes 10–25)
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Assume a realistic baseline (e.g., 100 million users). Alex Lu System Design Interview Pdf
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Distributing traffic across multiple servers (e.g., Round Robin, Least Connections).
If you remember nothing else from the guide during an interview, remember this four-step skeleton. It keeps you from diving down rabbit holes too early and ensures you hit every evaluation metric. Cache aside, write-through, and cache eviction policies
Alex Xu System Design Interview PDF: The Ultimate Guide to Mastering System Design
The Architect's Playbook: Mastering the System Design Interview with Alex Xu
Splitting large databases into smaller, faster, more manageable pieces based on a shard key. It has gained its excellent reputation for a
Sharding (horizontal partitioning) vs. Replication.
Comparing Volume 1 vs Volume 2 for your specific career level. Finding a study plan to cover the book in 30 days.
When data exceeds the capacity of a single database machine, horizontal scaling (sharding) becomes necessary. Master , which minimizes data redistribution when new database nodes are added or removed from a cluster. 2. Caching Strategies
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