smart-cache-manager 💾

Intelligent cache management with smart invalidation, auto-prefetch, and server sync.

Features

• ✅ LRU & LFU eviction strategies
• ✅ Smart dependency tracking
• ✅ Auto-prefetch before expiry
• ✅ Pattern-based invalidation
• ✅ Performance metrics
• ✅ Server-side sync
• ✅ TTL management
• ✅ Zero dependencies

Installation

```bash npm install smart-cache-manager ```

Usage

Basic Caching

```typescript import { createCacheManager } from 'smart-cache-manager';

const cache = createCacheManager({ ttl: 3600, // 1 hour strategy: 'LRU', // or 'LFU' maxSize: 1000, });

// Set value cache.set('user:123', { id: 123, name: 'John' });

// Get value const user = cache.get('user:123');

// Delete cache.delete('user:123');

// Check if exists if (cache.has('user:123')) { ... } ```

Smart Invalidation

```typescript // Exact match cache.invalidate('user:123');

// Pattern matching cache.invalidate('user:*'); // All users cache.invalidate('post:user:123'); // All posts by user 123 ```

Auto-Prefetch

```typescript // Auto-refresh popular posts 5 minutes before expiry await cache.prefetch('popular-posts', async () => { return await db.query('SELECT * FROM posts ORDER BY views DESC LIMIT 10'); }, { ttl: 3600, refreshBefore: 300000 // 5 minutes }); ```

Metrics & Monitoring

```typescript const metrics = cache.getMetrics(); console.log(metrics); // { // hits: 150, // misses: 50, // hitRate: 75, // totalKeys: 25, // avgAccessTime: 1.2, // memoryUsed: 45.23 // } ```

Server Sync

```typescript // Subscribe to cache changes cache.subscribe((event) => { console.log('Cache event:', event); // type: 'set' | 'delete' | 'invalidate' // Sync to other servers... }); ```

License

MIT