Cache settings

The Cache section (safesquid-cache(5)) controls in-memory HTTP caching, refresh policy, and ICP parameters for forwarding.

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Core mechanics

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Refresh — first match wins

Walk Refresh rows top-down; first enabled row whose profiles match sets min/max age, validate, and cachable flag, then stops. cachable=FALSE sets CACHE_INVALID unless CACHE_FORCE.

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Disk store hard-disabled

Disk store selection is inactive — new objects are memory-only regardless of Store row configuration.

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Violate RFC

Objects stored despite no-cache / no-store get CACHE_VIOLATION. When Violate RFC is off, reads return NULL (not served). When on, violation objects may be served.

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Examples

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How to verify

1. Enable CACHE in LOG_LEVEL.
2. Repeat URL request; check Detailed logs for hit/miss.
3. Use Manage cached objects to inspect or purge entries.