Apply the LIVE-read preferences onto the mutable config object. Consumers
of these fields dereference config at use time (per wheel event, per
timer re-arm, per load / pool creation), so mutation is the correct and
immediate application mechanism. With applyUrlPerformanceOverrides
below, the only sanctioned config-mutation sites — keep it that way.
Apply the LIVE-read preferences onto the mutable config object. Consumers of these fields dereference
configat use time (per wheel event, per timer re-arm, per load / pool creation), so mutation is the correct and immediate application mechanism. With applyUrlPerformanceOverrides below, the only sanctioned config-mutation sites — keep it that way.