Cannot conect to redis in Node - node.js

Question

I'm trying to create a basic caching app just to test redis. Im using Redis Version: 4.0.6.
First I was getting error clientclosederror: the client is closed.
Then, after reading the docs, I added
let client;
(async ()=> {
client = redis.createClient()
await client.connect()
})();
But now, when trying on Postman, it just hangs, no response is returned
Full Code:
const express = require("express");
const redis = require("redis");
const axios = require('axios')
const app = express();
let client;
(async ()=> {
client = redis.createClient()
await client.connect()
})();
app.get('/result', async (req, res) => {
const searchTerm = req.query.name;
try {
await client.get(searchTerm, async (err, result) => {
console.log('cached called')
if (err) throw err;
if (result) {
res.status(200).send({
result: JSON.parse(result),
message: "data retrieved from the cache"
});
}
else {
const result = await axios.get(`https://api.agify.io/?name=${searchTerm}`);
await client.set(searchTerm, JSON.stringify(result.data));
return res.status(200).send({
result: result.data,
message: "cache miss"
});
}
})
} catch (error) {
console.log('get error', error)
return res.status(500).send({ message: error.message })
}
})
app.listen(process.env.PORT || 3000, () => {
console.log("Node server started");
});

Answer 1

client.get doesn't need a callback function. It's async. My guess is that it's never getting called and thus Express is not returning anything.
Try this instead:
const result = await client.get('foo')
if (result !== null) {
// it's a hit
} else {
// it's a miss
}