class Microsoft.​Extensions.​Http.​HttpClientFactoryOptions

Remarks <para> The default implementation of <see cref="T:System.Net.Http.IHttpClientFactory" /> will pool the <see cref="T:System.Net.Http.HttpMessageHandler" /> instances created by the factory to reduce resource consumption. This setting configures the amount of time a handler can be pooled before it is scheduled for removal from the pool and disposal. </para> <para> Pooling of handlers is desirable as each handler typically manages its own underlying HTTP connections; creating more handlers than necessary can result in connection delays. Some handlers also keep connections open indefinitely which can prevent the handler from reacting to DNS changes. The value of <see cref="P:Microsoft.Extensions.Http.HttpClientFactoryOptions.HandlerLifetime" /> should be chosen with an understanding of the application's requirement to respond to changes in the network environment. </para> <para> Expiry of a handler will not immediately dispose the handler. An expired handler is placed in a separate pool which is processed at intervals to dispose handlers only when they become unreachable. Using long-lived <see cref="T:System.Net.Http.HttpClient" /> instances will prevent the underlying <see cref="T:System.Net.Http.HttpMessageHandler" /> from being disposed until all references are garbage-collected. </para>