{ "SRANDMEMBER": { "summary": "Get one or multiple random members from a set", "complexity": "Without the count argument O(1), otherwise O(N) where N is the absolute value of the passed count.", "group": "set", "since": "1.0.0", "arity": -2, "function": "srandmemberCommand", "history": [ [ "2.6.0", "Added the optional `count` argument." ] ], "command_flags": [ "READONLY" ], "acl_categories": [ "SET" ], "command_tips": [ "NONDETERMINISTIC_OUTPUT" ], "key_specs": [ { "flags": [ "RO", "ACCESS" ], "begin_search": { "index": { "pos": 1 } }, "find_keys": { "range": { "lastkey": 0, "step": 1, "limit": 0 } } } ], "arguments": [ { "name": "key", "type": "key", "key_spec_index": 0 }, { "name": "count", "type": "integer", "optional": true, "since": "2.6.0" } ], "reply_schema": { "oneOf": [ { "description": "In case `count` is not given and key doesn't exist", "type": "null" }, { "description": "In case `count` is not given, randomly selected element", "type": "string" }, { "description": "In case `count` is given, an array of elements", "type": "array", "items": { "type": "string" }, "minItems": 1 }, { "description": "In case `count` is given and key doesn't exist", "type": "array", "maxItems": 0 } ] } } }