L2 Distributed Cache implementation.

This module provides distributed caching capabilities using external storage systems like Redis or Memcached. It's designed for sharing cache data across multiple VaultX instances in a cluster environment.

Features

• Distributed Storage: Share cache across multiple nodes
• Persistence: Survives application restarts
• Scalability: Handle large datasets beyond memory limits
• Network Optimization: Efficient serialization and compression
• Failover Support: Graceful degradation when L2 is unavailable

Supported Adapters

• Redis (recommended for production)
• Memcached (for simple use cases)
• Custom adapters via behaviour implementation

Performance Characteristics

• Read latency: ~1-5ms (network dependent)
• Write latency: ~2-10ms (network dependent)
• Throughput: Limited by network and storage backend
• Memory usage: Minimal (data stored externally)

Configuration

config :vaultx, :cache,
  l2_adapter: Vaultx.Cache.Adapters.Redis,
  l2_connection: [
    host: "localhost",
    port: 6379,
    database: 0,
    pool_size: 10
  ],
  l2_ttl_default: :timer.hours(1),
  l2_compression: true,
  l2_encryption: false