@flightdev/cache-tiered

Tiered cache adapter for Flight Framework. Combine multiple cache layers for optimal performance.

Installation

npm install @flightdev/cache-tiered

Quick Start

import { createCache } from '@flightdev/core/cache';
import { tiered } from '@flightdev/cache-tiered';
import { lru } from '@flightdev/cache-lru';
import { redis } from '@flightdev/cache-redis';

const cache = createCache(tiered([
    lru({ max: 100, ttl: 60000 }),        // L1: Fast in-memory
    redis({ url: process.env.REDIS_URL }), // L2: Shared Redis
]));

// Reads check L1 first, then L2
// Writes go to all layers
await cache.set('key', 'value');
const value = await cache.get('key');

Configuration

tiered([
    // Layers in order of priority (fastest first)
    memoryAdapter,
    redisAdapter,
    s3Adapter,  // For very large/cold data
], {
    // Write to all layers on set (default: true)
    writeThrough: true,
    
    // Populate faster layers on cache miss (default: true)
    populateOnMiss: true,
});

How It Works

1. Read: Check L1 -> L2 -> L3 until found
2. Write: Write to all layers
3. Miss: Populate faster layers with the value

License

MIT