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Scalable Email Service

Interview Time: 60-90 min | Difficulty: Hard
Key Focus: Throughput, reliability, spam filtering, deliverability


Step 1: Functional & Non-Functional Requirements

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Step 2: API Design, Data Model & High-Level Design

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Step 3: Concurrency, Consistency & Scalability

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Step 4: Persistence Layer, Caching & Monitoring

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⚡ Quick Reference Cheat Sheet

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🎯 Interview Summary (5 Minutes)

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Glossary & Abbreviations