In-memory cache

The in-memory cache stores verification results in the Talos process using a ristretto-based LRU cache.

Configuration

cache:
  type: "memory"
  ttl: "5m"
  memory:
    max_size: 104857600 # 100MB
    num_counters: 10000 # Frequency estimation counters

Characteristics

• Per-process: Each Talos instance has its own cache. Not shared across instances.
• LRU eviction: Least-recently-used entries are evicted when the cache reaches max_size.
• TTL-based expiry: Entries expire after the configured ttl.
• Zero network overhead: No external dependencies.

When to use

Use the in-memory cache for single-node deployments or when each Talos instance handles enough traffic to benefit from local caching. For multi-instance deployments, consider Redis for shared cache across all instances.