在.NET Core API中限制每分钟的请求数量可以通过使用ASP.NET Core内置的中间件和限流策略来实现。以下是实现该功能的步骤:
using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.DependencyInjection;
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
// 添加限流服务
services.AddRateLimiting();
}
public void Configure(IApplicationBuilder app)
{
// 使用限流中间件
app.UseRateLimiting();
// 其他中间件和路由配置
}
}
RateLimitPolicies.cs
的类文件,并添加以下代码:using AspNetCoreRateLimit;
public class RateLimitPolicies
{
public static void Configure(IpRateLimitOptions options)
{
options.GeneralRules = new System.Collections.Generic.List<RateLimitRule>
{
new RateLimitRule
{
Endpoint = "*",
Limit = 100, // 设置每分钟请求数的限制值
Period = "1m" // 设置限制时间段为1分钟
}
};
}
}
ip_rate_limiting.json
的JSON文件,并添加以下内容:{
"IpRateLimiting": {
"EnableEndpointRateLimiting": true,
"StackBlockedRequests": false,
"RealIpHeader": "X-Real-IP",
"ClientIdHeader": "X-ClientId",
"HttpStatusCode": 429,
"IpWhitelist": [],
"IpRules": []
}
}
startup.cs
的JSON文件,并添加以下内容:{
"RateLimitOptions": {
"EnableRateLimiting": true,
"StackBlockedRequests": false,
"RealIpHeader": "X-Real-IP",
"ClientIdHeader": "X-ClientId",
"HttpStatusCode": 429,
"QuotaExceededMessage": "API rate limit exceeded.",
"RateLimitCounterPrefix": "api",
"DisableRateLimitHeaders": false,
"ClientId": {
"Header": "X-ClientId",
"Claims": [],
"UseDefault": true,
"DefaultClientIdHeader": "X-ClientId"
},
"EndpointRules": [],
"ClientRules": [],
"IpRules": []
}
}
appsettings.json
的文件,并添加以下内容:{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
}
}
}
[RateLimit]
特性来应用限流策略,例如:using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
[ApiController]
[Route("api/[controller]")]
[RateLimit]
public class MyController : ControllerBase
{
private readonly ILogger<MyController> _logger;
public MyController(ILogger<MyController> logger)
{
_logger = logger;
}
[HttpGet]
public IActionResult Get()
{
// 处理请求的逻辑
return Ok("Success");
}
}
这样,每分钟请求超过限制数量的客户端将收到HTTP状态码429 - Too Many Requests的响应。
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