Module metrics 

Structs

ProxyMetrics

Functions

load_persisted

Cross-process read of the persisted proxy totals, used by the gain CLI/dashboard to reconcile savings against the real number of provider turns.

persist

Atomically write the current in-process totals to disk. The proxy owns these totals for its lifetime, so a plain overwrite (not an additive merge) keeps the file in lock-step with the live atomics.

record_request

snapshot