Struct DBEnforcer

internal/limits/enforcer.go:39–47

DBEnforcer is the production Enforcer: reads account_limits + falls back to operator Defaults, counts current resources via the usage store, and caches the resolved Limits in-process for cacheTTL to keep hot paths off the DB on every send. The cache only stores the *Limits* (caps), not the *counts*

// check; the win from caching limits is avoiding the join into
// account_limits, which is the costlier read.
type DBEnforcer struct {
	store    limitsReader
	counter  Counter
	defaults Defaults
	cacheTTL time.Duration

	mu    sync.Mutex
	cache map[string]cachedLimits
}

type cachedLimits struct {
	limits  Limits