What is the optimal way of caching Redis?

Question

I am learning about caching Redis for my application. This is the way that i have been caching the database on the server. My question is whether this is the correct way to store data in Redis? And how can I improve this further.

    exports.homeView = (req,res) => {
            if(req.session.role == 'admin')
            {   
                let booksCached
                const getBookCacheAdmin = async () => {
                    const client = redis.createClient(6379)
                    await client.connect()
                    booksCached = await client.get('books_cache_admin')
                    await client.quit()
                }
                getBookCacheAdmin()
                if(booksCached) {
                    res.render('index', {title: 'Home' ,books: JSON.parse(booksCached)})
                }
                else {
                    bookSchema.find()
                    .then(async(result)=> {
                        const client = redis.createClient(6379)
                        await client.connect()
                        await client.set('books_cache_admin', JSON.stringify(result))
                        await client.quit()
                        res.render('index', {title:'Home', books: result})
                    })
                    .catch((err)=> {
                        console.log(err)
                    })
                }
            }