ARC2 Proxy
Caching Global · server boolean

add_caching

Master switch for the edge cache across the whole proxy.

Config key
add_caching
Scope
Global · server
Type
boolean
Default
true

Turns the edge cache on or off for the entire process. With it off, every request is proxied straight to the origin regardless of any per-domain lifetime — useful when the proxy is purely a routing/security layer.

Performance
Leave this on for any read-heavy workload. A warm cache removes origin round-trips entirely on hits and is the main reason sub-millisecond responses are possible.
add_caching = true