Get method asynchronous in web app with nodejs and redis

I’m new to nodejs and redis and I’m trying to create a web app have which should get recent tweets containing a set hashtag and pattern :

const twitterClient = require('./init')
var counts = 0;
var tweet_array_IDs = [];
var hashtag_search = "covid";
var pattern = "vaccine";
var redis = require("redis"),
    redisClient;

redisClient = redis.createClient({
    legacyMode: true,
});

redisClient.connect();

redisClient.get(pattern, function (err, tweet_counts){

    if (err !== null){
    
        //gestisci l'errore
        console.log("Error: " + err);
    }

    if (tweet_counts === null)
        counts = 0;
    else
        counts = parseInt(tweet_counts, 10);
        
});

var get_recent_tweet = function(hashtag_search, pattern){

    twitterClient.tweets.search({
        q: '#' + hashtag_search,
        result_type: 'recent', //get latest tweets with this hashtag
    }).then ((response) => {
        var tweet_array = response.statuses;
        tweet_array.forEach(function (tweet){           
            // if current tweet is not in the list, add it
            if (tweet_array_IDs.indexOf(tweet.id) === -1){
                tweet_array_IDs.push(tweet.id);
                if (tweet.text.indexOf(pattern) > -1){
                                counts++;
                                redisClient.incr(pattern);
                        }
            }
        });


    }).catch ((err) => console.error(err));
}


setInterval(function () {
    get_recent_tweet(hashtag_search, pattern);  
    module.exports = counts;
}, 3000);

My question is the following, I’ve read that the get method() in nodejs is asynchronous so should the get_recent_tweet function be placed inside the callback function of the redisClient.get() method ?