Render page when database contents changes

Question

So suppose I have a page that displays all the user's posts. Right now when the user creates a post, it stores it into the database. But that new post will not appear unless I log out of the app and log back in. How can I make it so that the post will appear without having to logout?

const [Posts,setPosts] = useState([])

useEffect(()=>{
const fetchUserPosts = async () => {
const res = await client.get('/fetch-user-posts')
setPosts(res.data.posts)
}
fetchUserPosts()
},[])

And in the rendering I just took the Posts and map it to display its contents. I know this problem exists somewhere but I don't know what keywords to google. I have seen posts asking to use JQuery but I bet there is a simpler solution? Any pointers are appreciated.