Advanced Pattern Design

Master complex implementation strategies and professional-grade architectural patterns in Eiseniiaia.

🧠 Why Advanced Patterns Matter

Advanced patterns help solve complex system challenges by enabling clean separation of concerns, performance optimization, and scalable architecture.

scalability

Handle enterprise-level growth

maintainability

Clean code structure and separation

performance

Optimized runtime behavior

📦 Modular Design Patterns

Service Segregation

Isolate business logic into single-responsibility services with strict API boundaries.


                    
                        
                    
                    Plugin Architecture
                    
                        Create extensible systems through standardized plugin interfaces.
                    
                    
                        
// Plugin base class
class Plugin {
  constructor(config) {
    this.config = config;
  }

  init() { /* initialization logic */ }
}

// Concrete implementation
class AnalyticsPlugin extends Plugin {
  track(eventName) { /* implementation */ }
}

const plugin = new AnalyticsPlugin({ sampleRate: 0.1 });
plugin.init();



        
        
            ⚡ Event Handling Patterns
            
                
                    
                        Event Bus Pattern
                        Centralized event coordination for decoupled communication
                    
                    
                        
                    
                
                
                    
                        
                            
                            // Event bus implementation
const EventBus = {
  events: new Map(),

  on(event, handler) {
    if (!this.events.has(event)) this.events.set(event, []);
    this.events.get(event).push(handler);
  },

  emit(event, data) {
    (this.events.get(event) || []).forEach(handler => handler(data));
  }
};

// Usage
EventBus.on('user:login', (user) => {
  console.log('New login:', user);
});

EventBus.emit('user:login', { id: 123 });

                        
                        
                            Enables cross-module communication
                            Supports wildcards for event matching
                            Built-in rate-limiting and validation
                        
                    
                
            
        

        
        
            🚀 Performance Optimization
             
                 
                 
                     
                         
                     
                     Caching Layers
                     
                         Multi-level caching with intelligent expiration policy
                     
                     
                         
class Cache {
  constructor() {
    this.memory = new Map(); // L1
    this.disk = new FileCache(); // L2
  }

  get(key) {
    return this.memory.has(key)
      ? this.memory.get(key)
      : this.disk.get(key);
  }
}

// Usage with expiration
const cache = new Cache();
cache.get('sessionData');

                     
                 

                 
                 
                     
                         
                     
                     Lazy Initialization
                     
                         Delay resource allocation until critical usage point
                     
                     
                         
// Lazy loading pattern
class Worker {
  constructor() {
    this._db = null;
  }

  get database() {
    if (!this._db) {
      this._db = new SQLDatabase();
    }
    return this._db;
  }
}

const worker = new Worker();
worker.database.query(...);

                     
                 
            
        

        
        
            💼 Enterprise Implementation Patterns
            
                
                    
                        Scopes
                        Control access boundaries
                    
                    
                        Auditing
                        Track all system changes
                    
                    
                        Rate Limits
                        Prevent abuse patterns
                    
                
                
                Policy Enforcement Example
                
                    
class AccessManager {
  constructor(policies) {
    this.policies = policies;
  }

  can(user, action, resource) {
    return this.policies.every(policy => policy.check(user, action, resource));
  }
}

// Usage
const policies = [
  (user, action) => user.role === 'admin' || action === 'read'
];

const manager = new AccessManager(policies);
const access = manager.can(user, 'delete', 'database');

                
            
        

        
        
            🔥 Ready to Master Advanced Patterns?
            
                These patterns are used in production at scale. Start implementing them in your projects and see the difference.
            
            
                
                    � API Reference
                
                
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