Caching Layers

In-process LRU, disk tier, and optional Redis for multi-instance.

The page cache is layered: a bounded in-memory LRU (L1), an optional disk tier (L2), and an optional Redis backend (L3) for sharing cache across instances.

[cache]
memory_mb = 128

[cache.redis]
enabled = true
url = "redis://localhost:6379"