Dealing with 'TooManyConnectionsError' in Dart with Isolates

In Dart, a TooManyConnectionsError occurs when an application tries to open more network connections than the system can handle.

This error is common when building web servers or network applications in Dart, especially when using asynchronous tasks and multiple threads or isolates.

Dart’s Isolate mechanism is designed to handle parallel tasks, but if too many isolates are spawned, each creating its own connection, you may run into the TooManyConnectionsError.

To avoid this error, it is essential to manage the number of concurrent connections effectively.

One solution is to limit the number of isolates that can run concurrently by using a pool of reusable isolates.

This ensures that the number of connections remains within the system's limits.

Additionally, you can use Dart’s async/await pattern to control concurrency, making sure that each connection is closed before opening new ones.

You can also implement a connection queue or use throttling techniques to prevent too many simultaneous connections from overwhelming the system.

By controlling concurrency and limiting the number of network connections, you can avoid the TooManyConnectionsError and ensure your Dart applications run smoothly even under heavy load.