wehub-resource-sync
26382a7ac6
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13 lines
535 B
Markdown
13 lines
535 B
Markdown
# PaymentGateway
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The PaymentGateway is the component that talks to the upstream card processor.
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## Retry policy
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The PaymentGateway retries failed charges using exponential backoff: it starts
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with a base delay of 200ms and doubles the delay after every failed attempt
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(200ms, 400ms, 800ms, ...). It gives up after a maximum of 5 attempts, at which
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point the charge is marked permanently failed and the error is surfaced to the
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caller. Only transient upstream errors (HTTP 5xx, timeouts) are retried; a hard
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decline is never retried.
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