var (
requestLimiterQuietPeriod = time.Second
requestLimiterInitialLimit int64 = 8
+ requestLimiterMinimumLimit int64 = 4
)
type requestLimiter struct {
current int64
limit int64
+ maxlimit int64
lock sync.Mutex
cond *sync.Cond
quietUntil time.Time
increase = 1
}
rl.limit += increase
- if max := rl.current * 2; max > rl.limit {
+ if max := rl.current * 2; max < rl.limit {
rl.limit = max
}
+ if min := requestLimiterMinimumLimit; min > rl.limit {
+ // If limit is too low, programs like
+ // controller and test suites can end up with
+ // too few slots to complete a single request.
+ rl.limit = min
+ }
+ if rl.maxlimit > 0 && rl.maxlimit < rl.limit {
+ rl.limit = rl.maxlimit
+ }
rl.cond.Broadcast()
}
return false