Function ntex_redis::cmd::LPush

pub fn LPush<T, V>(key: T, value: V) -> LPushCommand where
    BulkString: From<T> + From<V>, 

LPUSH redis command

Insert all the specified values at the head of the list stored at key.

use ntex_redis::{cmd, RedisConnector};

#[ntex::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let redis = RedisConnector::new("127.0.0.1:6379").connect().await?;
    let key = gen_random_key();

    // create list with one value
    redis.exec(
        cmd::LPush(&key, "value1")
           .extend(vec!["value2", "value3", "value4"])
    ).await?;

    Ok(())
}

LPushCommand::if_exists() method changes LPUSH command to LPUSHX command

use ntex_redis::{cmd, RedisConnector};

#[ntex::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let redis = RedisConnector::new("127.0.0.1:6379").connect().await?;
    let key = gen_random_key();

    // create list with one value only if key already exists
    redis.exec(
        cmd::LPush(&key, "value1")
            .value("value2")
            .if_exists()
    ).await?;

    Ok(())
}