Self-adaptive current limiting method, device and program product

The invention provides a self-adaptive flow limiting method and device and a program product. The method comprises the following steps: determining whether the quantity of service requests in a second time period has volatility compared with the quantity of service requests in a first time period or not; if the fluctuation exists, determining the number of sample service requests matched with the number of the service requests in the second time period based on the correlation between the number of the service requests and a preset current limiting threshold; the correlation represents the correlation of any sample service request number under different preset current limiting thresholds; the number of the matched sample service requests is the number of the sample service requests closest to the number of the service requests in the second time period in the number of the sample service requests; determining a preset current-limiting threshold value with the maximum correlation with the number of the matched