githubmirror/redis

src/commands/sunsubscribe.json

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Optimize PSUBSCRIBE and PUNSUBSCRIBE from O(N*M) to O(N) (#12298)

19 июн 2023, 16:31

19 июн 2023, 16:31b510624

{
    "SUNSUBSCRIBE": {
        "summary": "Stops listening to messages posted to shard channels.",
        "complexity": "O(N) where N is the number of shard channels to unsubscribe.",
        "group": "pubsub",
        "since": "7.0.0",
        "arity": -1,
        "function": "sunsubscribeCommand",
        "command_flags": [
            "PUBSUB",
            "NOSCRIPT",
            "LOADING",
            "STALE"
        ],
        "arguments": [
            {
                "name": "shardchannel",
                "type": "string",
                "optional": true,
                "multiple": true
            }
        ],
        "key_specs": [
            {
                "flags": [
                    "NOT_KEY"
                ],
                "begin_search": {
                    "index": {
                        "pos": 1
                    }
                },
                "find_keys": {
                    "range": {
                        "lastkey": -1,
                        "step": 1,
                        "limit": 0
                    }
                }
            }
        ]
    }
}