Mission Compile

System Design Mastery

HLD Topics

What is System Design?System Design GlossaryNew Functional vs Non-functional Core Performance Metrics Request Lifecycle The Scaling Mindset Sync vs Async SystemsNew Back-of-Envelope EstimationNew Capacity PlanningNew SLAs, SLOs & SLIsNew

Database Fundamentals SQL vs NoSQL Deep DiveNew OLTP vs OLAPNew ACID vs BASE PropertiesNew Database Indexing LSM Trees vs B-TreesNew Read vs Write Patterns DenormalizationNew Query OptimizationNew Connection PoolingNew Caching Strategies Cache Eviction Cache InvalidationNew Redis Deep DiveNew Redis vs MemcachedNew Object Storage & CDN Edge ComputingNew Database Isolation Levels Choosing the Right Database

Load Balancers LB Algorithms Consistent HashingNew Health Checks & Failover Rate Limiting Throttling & Load Shedding Forward vs Reverse ProxyNew

Message Queues Pub/Sub PatternNew Producer-Consumer Pattern Consumer Groups Delivery GuaranteesNew Retry Strategies Event-Driven Architecture Stream Processing Batch vs Stream ProcessingNew Apache Kafka Deep DiveNew Kafka vs RabbitMQ vs SQSNew

Vertical vs Horizontal Database Replication Sharding & Partitioning Stateless Services Session Management Auto-scaling High Availability

Monolith vs Microservices API Gateway Service Discovery Circuit Breaker Bulkhead PatternNew CQRS PatternNew Event SourcingNew Saga PatternNew

CAP Theorem PACELC TheoremNew Consistency Models Idempotency Distributed TransactionsNew Distributed LocksNew Leader ElectionNew Consensus AlgorithmsNew Vector ClocksNew

Logging Best Practices Metrics & MonitoringNew Distributed Tracing Alerting StrategiesNew Health Checks Deep DiveNew

Networking Basics DNS Deep DiveNew REST, GraphQL, gRPC Protocol Buffers & SerializationNew WebSockets & SSE API VersioningNew Pagination StrategiesNew Retries & TimeoutsNew Compression TechniquesNew

Auth vs AuthorizationNew OAuth 2.0 & OIDCNew JWT & TokensNew TLS/SSL & HTTPSNew EncryptionNew API SecurityNew Secrets ManagementNew DDoS ProtectionNew

Time-Series DatabasesNew Graph DatabasesNew ElasticsearchNew Bloom FiltersNew

Interview FrameworkNew Requirement ClarificationNew Estimation TechniquesNew High-Level DesignNew Deep Dive StrategiesNew Bottleneck AnalysisNew Trade-off AnalysisNew

Practice Problems

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LLD Problem

Vending Machine

Design a vending machine with product selection, payment processing, and inventory management.

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