src/commands/brpoplpush.json


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{
    "BRPOPLPUSH": {
        "summary": "Pops an element from a list, pushes it to another list and returns it. Block until an element is available otherwise. Deletes the list if the last element was popped.",
        "complexity": "O(1)",
        "group": "list",
        "since": "2.2.0",
        "arity": 4,
        "function": "brpoplpushCommand",
        "history": [
            [
                "6.0.0",
                "`timeout` is interpreted as a double instead of an integer."
            ]
        ],
        "deprecated_since": "6.2.0",
        "replaced_by": "`BLMOVE` with the `RIGHT` and `LEFT` arguments",
        "doc_flags": [
            "DEPRECATED"
        ],
        "command_flags": [
            "WRITE",
            "DENYOOM",
            "BLOCKING"
        ],
        "acl_categories": [
            "LIST"
        ],
        "key_specs": [
            {
                "flags": [
                    "RW",
                    "ACCESS",
                    "DELETE"
                ],
                "begin_search": {
                    "index": {
                        "pos": 1
                    }
                },
                "find_keys": {
                    "range": {
                        "lastkey": 0,
                        "step": 1,
                        "limit": 0
                    }
                }
            },
            {
                "flags": [
                    "RW",
                    "INSERT"
                ],
                "begin_search": {
                    "index": {
                        "pos": 2
                    }
                },
                "find_keys": {
                    "range": {
                        "lastkey": 0,
                        "step": 1,
                        "limit": 0
                    }
                }
            }
        ],
        "reply_schema": {
            "oneOf": [
                {
                    "type": "string",
                    "description": "The element being popped from source and pushed to destination."
                },
                {
                    "type": "null",
                    "description": "Timeout is reached."
                }
            ]
        },
        "arguments": [
            {
                "name": "source",
                "type": "key",
                "key_spec_index": 0
            },
            {
                "name": "destination",
                "type": "key",
                "key_spec_index": 1
            },
            {
                "name": "timeout",
                "type": "double"
            }
        ]
    }
}