System Design & Scaling

System Design & Scaling

Build robust, scalable systems that handle millions of users and massive data loads

What You’ll Master

🏗️ Distributed Systems Architecture

Design systems that scale beyond single machines

  • Microservices Architecture - Service decomposition, API design, and inter-service communication
  • Event-Driven Architecture - Event sourcing, CQRS, and building reactive systems
  • Service Mesh - Istio, Envoy, and managing service-to-service communication
  • API Gateway Patterns - Request routing, rate limiting, and API composition
  • Distributed Data Management - Data consistency, replication, and partitioning strategies

📈 Scalability Patterns

Proven approaches to handle explosive growth

  • Horizontal vs Vertical Scaling - When and how to scale out vs scale up
  • Load Balancing - Application load balancers, DNS-based routing, and traffic distribution
  • Caching Strategies - Multi-level caching, cache invalidation, and distributed caching
  • Database Scaling - Read replicas, sharding, and multi-master setups
  • Auto-scaling - Dynamic resource allocation and predictive scaling

🔄 Performance Optimization

Squeeze maximum performance from your systems

  • Latency Optimization - Reducing response times across the stack
  • Throughput Maximization - Handling more requests with existing resources
  • Memory Management - Efficient memory usage and garbage collection tuning
  • Network Optimization - CDNs, connection pooling, and protocol optimization
  • Database Performance - Query optimization, indexing strategies, and connection management

🛡️ Reliability & Fault Tolerance

Build systems that stay up when components fail

  • Circuit Breaker Pattern - Preventing cascading failures and managing dependencies
  • Retry Mechanisms - Exponential backoff, jitter, and intelligent retry strategies
  • Bulkhead Pattern - Isolating resources and limiting blast radius
  • Health Checks - Monitoring system health and automated failover
  • Disaster Recovery - Backup strategies, RTO/RPO planning, and multi-region deployments

🔍 Monitoring & Observability

Gain deep insights into system behavior

  • Metrics & KPIs - Defining and tracking key system metrics
  • Logging Strategies - Structured logging, log aggregation, and centralized logging
  • Distributed Tracing - Request flow tracking across microservices
  • Alerting Systems - Intelligent alerting, on-call management, and escalation policies
  • Performance Monitoring - APM tools, synthetic monitoring, and real user monitoring

💾 Data Architecture

Design data systems that scale with your business

  • Database Selection - SQL vs NoSQL, NewSQL, and choosing the right database
  • Data Modeling - Relational, document, graph, and time-series data models
  • Data Pipeline Architecture - ETL/ELT processes, stream processing, and batch processing
  • Data Consistency - ACID properties, eventual consistency, and consistency patterns
  • Big Data Systems - Hadoop ecosystem, Spark, and modern data lakes

☁️ Cloud-Native Architecture

Leverage cloud services for maximum efficiency

  • Containerization - Docker, Kubernetes, and container orchestration
  • Serverless Architecture - Functions-as-a-Service, serverless patterns, and cost optimization
  • Cloud Service Integration - AWS/GCP/Azure services and multi-cloud strategies
  • Infrastructure as Code - Terraform, CloudFormation, and automated provisioning
  • DevOps Integration - CI/CD pipelines, GitOps, and automated deployments

Recent Articles

Coming Soon

Comprehensive system design content is in development. Stay tuned!

Architecture Tradeoffs

🔀 Common Tradeoffs You’ll Navigate

Consistency vs Availability

  • CAP theorem implications in distributed systems
  • When to choose strong vs eventual consistency
  • Partition tolerance strategies and fallback mechanisms

Latency vs Throughput

  • Optimizing for response time vs request volume
  • Batching strategies and their impact on user experience
  • Real-time vs near-real-time processing decisions

Cost vs Performance

  • Right-sizing resources for optimal cost-performance ratio
  • Reserved vs on-demand resource allocation
  • Performance monitoring ROI and optimization priorities

Complexity vs Maintainability

  • When microservices add more complexity than value
  • Balancing feature velocity with technical debt
  • Team structure impact on architecture decisions

Scaling Scenarios

🚀 Real-World Scaling Challenges

Startup to Scale-up (1K → 100K users)

  • Database optimization and connection pooling
  • Implementing caching layers effectively
  • Load balancer setup and SSL termination
  • Basic monitoring and alerting systems

Scale-up to Enterprise (100K → 1M+ users)

  • Microservices decomposition strategies
  • Database sharding and read replica setup
  • CDN implementation and asset optimization
  • Advanced monitoring and distributed tracing

Global Scale (1M+ → 100M+ users)

  • Multi-region deployment strategies
  • Data localization and compliance requirements
  • Advanced caching and edge computing
  • Chaos engineering and reliability practices

Tools & Technologies

Infrastructure & Deployment

  • Kubernetes - Container orchestration and service management
  • Docker - Containerization and application packaging
  • Terraform - Infrastructure as code and resource management
  • Helm - Kubernetes application deployment and management

Monitoring & Observability

  • Prometheus - Metrics collection and monitoring
  • Grafana - Visualization and dashboards
  • Jaeger - Distributed tracing and request flow analysis
  • ELK Stack - Log aggregation, search, and analysis

Databases & Storage

  • PostgreSQL - Relational database with advanced features
  • Redis - In-memory caching and data structures
  • Apache Kafka - Event streaming and message queuing
  • Elasticsearch - Search and analytics engine

Cloud Platforms

  • AWS - Comprehensive cloud services and infrastructure
  • Google Cloud - Modern cloud platform with strong AI/ML services
  • Azure - Enterprise-focused cloud platform
  • DigitalOcean - Simple and cost-effective cloud infrastructure

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