Breaking News: Grepper is joining You.com. Read the official announcement!

How to set rate limit asp.net core web api

Black Dream answered on June 11, 2023 Popularity 8/10 Helpfulness 5/10

answer How to set rate limit asp.net core web api

How to set rate limit asp.net core web api

Comment

 public class RateLimitMiddleware
    {
        private readonly RequestDelegate _next;
        private readonly ILogger<RateLimitMiddleware> _logger;
        private readonly ConcurrentDictionary<string, DateTime> _requestDictionary;

        public RateLimitMiddleware(RequestDelegate next, ILogger<RateLimitMiddleware> logger)
        {
            _next = next;
            _logger = logger;
            _requestDictionary = new ConcurrentDictionary<string, DateTime>();
        }

        public async Task InvokeAsync(HttpContext context)
        {
            var ipAddress = context.Connection.RemoteIpAddress?.ToString();
            var currentTime = DateTime.UtcNow;

            if (IsRateLimitExceeded(ipAddress, currentTime))
            {
                _logger.LogInformation($"Rate limit exceeded for IP address: {ipAddress}");
                context.Response.StatusCode = StatusCodes.Status429TooManyRequests;
                await context.Response.WriteAsync("Too many requests. Please try again later.");
                return;
            }

            await _next(context);

            _requestDictionary.AddOrUpdate(ipAddress, currentTime, (_, _) => currentTime);
        }

        private bool IsRateLimitExceeded(string ipAddress, DateTime currentTime)
        {
            if (_requestDictionary.TryGetValue(ipAddress, out var lastRequestTime))
            {
                var timeDifference = currentTime - lastRequestTime;
                return timeDifference.TotalSeconds < 10; // Ограничение в 10 секунд
            }

            return false;
        }
    }

Popularity 8/10 Helpfulness 5/10 Language csharp

Source: Grepper

Tags: api asp.net-core c# limit middleware rate rate-limiting set web

Link to this answer
Share Copy Link

Contributed on Jun 11 2023

Black Dream

0 Answers Avg Quality 2/10

How to set rate limit asp.net core web api

Contents

More Related Answers

How to set rate limit asp.net core web api

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.