Optional ReadonlydecreaseWhat the limit is multiplied by on a failure. Defaults to 0.9.
ReadonlymaxNever go above this, however well.
ReadonlyminNever go below this, however badly things are going.
Optional ReadonlyslowerCalls slower than this are treated as failures for the purpose of the limit.
How a bulkhead moves its own limit in response to what it sees.