remove unused var
http_throttle is middleware for the http package that throttles the number of concurrent requests that an HTTP client can make.
// This client allows 32 concurrent requests. final client = new ThrottleClient(32); Future<List<String>> readAllUrls(Iterable<Uri> urls) { return Future.wait(urls.map((url) { // You can safely call as many client methods as you want concurrently, and // ThrottleClient will ensure that only 32 underlying HTTP requests will be // open at once. return client.read(url); })); }