Expiration override #166
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Expiration override #166
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The cached credentials provider will only adjust its refresh interval when caching STS web identity credentials (expiration_timepoint_seconds < UINT_MAX). STS credentials are typically valid for 1h. The default refresh interval for the default chain provider is 15 minutes. Currently the cached credentials provider will only adjust its refresh interval if the STS credentials expire within its refresh interval (via if-condition). Consequently, the cached provider will refresh STS credentials 4 times more frequently than required, increasing the load on the STS endpoint. This causes issues for large parallel workloads, such as throttling STS requests. Hence honor the longer expiration interval where possible.
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If present, credentials expiration time should override the blind refresh interval on the caching provider.
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.