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The API Performance SLA as defined in the Operational Guidelines, is set at 500ms and only applies to the endpoints listed in these guidelines.
The value of 500ms is split 50:50 between the API Hub and a given LFI, as the SLA is shared between both.
Performance is measured using the Time to Last Byte (TTLB) metric. The timer starts when the request is initiated, and stops when the last byte of data is received by the client.
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