if ( is_array( $etcdResponse['config'] ) ) {
// Avoid having all servers expire cache keys at the same time
$expiry = microtime( true ) + $this->baseCacheTTL;
+ // @phan-suppress-next-line PhanTypeMismatchArgumentInternal
$expiry += mt_rand( 0, 1e6 ) / 1e6 * $this->skewCacheTTL;
$data = [
'config' => $etcdResponse['config'],