{ "HISTORY": { "summary": "Return timestamp-latency samples for the event.", "complexity": "O(1)", "group": "server", "since": "2.8.13", "arity": 3, "container": "LATENCY", "function": "latencyCommand", "command_flags": [ "ADMIN", "NOSCRIPT", "LOADING", "STALE" ], "command_tips": [ "NONDETERMINISTIC_OUTPUT", "REQUEST_POLICY:ALL_NODES", "RESPONSE_POLICY:SPECIAL" ], "arguments": [ { "name": "event", "type": "string" } ] } }