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This service caches handle values to avoid latency and handle system traffic with the result that changes to handle values in the ANDS PID ARDC Handle service are not immediately available by an unqualified reference to the Handle Proxy.

The TTL (Time-To- Live) of all ANDS PIDS all  handle values is set at 30 minutes as per advice from CNRI.

This means that any updates to handle values may not be cached in the Handle Proxy for at least 30 minutes after committed to the ANDS PID Handle Service. The Handle Proxy has means for bypassing the proxy cache for critical applications if required by service users.