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## 4.0.9

**`(fix):`** 修复 RetryInterceptor 在所有请求中共享单个 ExponentialBackoff 实例的问题。
一旦任何请求耗尽了重试预算，在客户端的生命周期内就不会再尝试进一步的重试。
现在每个请求都获得自己的退避实例。