Adia.TaskRateLimiter

This is a utility to limit the rate of calls to any provided function. When the function is called too frequently, TaskRateLimiter queues it and schedules its execution for a later time

Installation

Add the package to your project from Visual Studio Package Manager or from the command line, using .NET CLI:

dotnet add package Adia.TaskRateLimiter

Usage

First, create and configure an instance of TaskRateLimiter. The following example creates an instance configured to allow at most 3 calls per second.

using Adia.TaskRateLimiter;
var rateLimiter = new RateLimiter(3, TimeSpan.FromSeconds(1));

Then, provide your function to the Run method of the rateLimiter:

Func<Task> myCode = () =>
{
    //...
};

await rateLimiter.Run(myCode);

If Run gets called 4 times in a row without any delay, the last execution will wait a second before completing.

await rateLimiter.Run(myCode); //
await rateLimiter.Run(myCode); //
await rateLimiter.Run(myCode); // these 3 will complete without delays
await rateLimiter.Run(myCode); // this one will wait

The time to wait is measured from the end of the first call.