Design Patterns
Essential software design patterns and architectural solutions for complex systems. Battle-tested patterns for scalability, maintainability, and performance.
Pattern Categories
ETL
Extract-Transform-Load
Data processing pattern for moving data between systems
Change Data Capture (CDC)
Capture and process only changed data records
Batch Processing
Process large volumes of data in scheduled batches
Config
Configuration Factory
Centralized configuration management with environment-specific settings
Hierarchical Configuration
Layered configuration with inheritance and overrides
Dynamic Configuration
Runtime configuration changes without application restart
Factory
Abstract Factory
Create families of related objects without specifying concrete classes
Builder Pattern
Construct complex objects step by step with fluent interface
Dependency Injection
Provide dependencies to objects rather than having them create dependencies
Rate Limiting
Token Bucket
Allow bursts of traffic up to a maximum capacity with steady refill rate
Leaky Bucket
Process requests at a steady rate, dropping excess requests
Sliding Window
Track request counts over a moving time window
Caching
Cache-Aside
Application manages cache explicitly with read-through and write-around
Write-Through Cache
Write to cache and database simultaneously for consistency
Write-Behind Cache
Write to cache immediately, persist to database asynchronously
Messaging
Publish-Subscribe
Decouple message producers from consumers using topics
Message Queue
Asynchronous communication using queued messages
Event Sourcing
Store all changes as a sequence of events rather than current state
Resilience
Circuit Breaker
Prevent cascading failures by monitoring and breaking faulty connections
Retry Pattern
Automatically retry failed operations with backoff strategies
Bulkhead
Isolate critical resources to prevent total system failure
Security
OAuth 2.0 Flow
Secure authorization framework for API access delegation
JWT Authentication
Stateless authentication using JSON Web Tokens
API Gateway
Centralized entry point for API management and security