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Showing posts with the label ASP.NET Core rate limiting

ASP.NET Core Rate Limiting — Protect Your API (2026)

Learn ASP.NET Core rate limiting with practical C# examples. Fixed window, sliding window, token bucket — protect your API from abuse today. Every public API faces the same threat: one badly behaved client can hammer your endpoints, exhaust your database connections, and bring down the service for everyone. ASP.NET Core rate limiting gives you a built-in, production-ready defense against exactly this problem — no third-party packages required. Since .NET 7, the Microsoft.AspNetCore.RateLimiting middleware has shipped as a first-class feature. In this guide, you'll learn how to configure every built-in algorithm, apply limits per-client and per-endpoint, and avoid the mistakes that quietly break rate limiting in production. Why Rate Limiting in ASP.NET Core Matters Rate limiting controls how many requests a client can make within a time window. Without it, your API is vulnerable to: Denial-of-service attacks — intentional flooding that crashes your service A...