The Microsoft.AspNetCore.RateLimiting middleware provides rate limiting middleware. Apps configure rate limiting policies and then attach the policies to endpoints.
Why use rate limiting
Rate limiting can be used for managing the flow of incoming requests to an app. Key reasons to implement rate limiting:
- Preventing Abuse: Rate limiting helps protect an app from abuse by limiting the number of requests a user or client can make in a given time period. This is particularly important for public APIs.
- Ensuring Fair Usage: By setting limits, all users have fair access to resources, preventing users from monopolizing the system.
- Protecting Resources: Rate limiting helps prevent server overload by controlling the number of requests that can be processed, thus protecting the backend resources from being overwhelmed.
- Enhancing Security: It can mitigate the risk of Denial of Service (DoS) attacks by limiting the rate at which requests are processed, making it harder for attackers to flood a system.
- Improving Performance: By controlling the rate of incoming requests, optimal performance and responsiveness of an app can be maintained, ensuring a better user experience.
- Cost Management: For services that incur costs based on usage, rate limiting can help manage and predict expenses by controlling the volume of requests processed.
