nextjs revalidate gives error : Keys that need to be moved: revalidate-CodePudding

I am trying to use the revalidate function. I tried to follow the code that Vercel offers, but I keep getting an error. Here is the function that I am using:

export async function getServerSideProps() {
  const client = await clientPromise;

  const db = client.db("myFirstDatabase");

  let users = await db.collection("users").find({}).toArray();
  users = JSON.parse(JSON.stringify(users));

  return {
    props: {
     users,
    },
    revalidate: 15,
  };
}

And here is the mongodb file that returns the client:

import { MongoClient } from 'mongodb'

const uri = process.env.MONGODB_URI
const options = {
  useUnifiedTopology: true,
  useNewUrlParser: true,
}

let client
let clientPromise

if (!process.env.MONGODB_URI) {
  throw new Error('Please add your Mongo URI to .env.local')
}

if (process.env.NODE_ENV === 'development') {
  // In development mode, use a global variable so that the value
  // is preserved across module reloads caused by HMR (Hot Module Replacement).
  if (!global._mongoClientPromise) {
    client = new MongoClient(uri, options)
    global._mongoClientPromise = client.connect()
  }
  clientPromise = global._mongoClientPromise
} else {
  // In production mode, it's best to not use a global variable.
  client = new MongoClient(uri, options)
  clientPromise = client.connect()
}

export default clientPromise

I have been able to connect to the database and the code works fine if I remove the revalidate part. The error that I get is :

** Error: Additional keys were returned from getServerSideProps. Properties intended for your component must be nested under the props key, e.g.:

return { props: { title: 'My Title', content: '...' } }

Keys that need to be moved: revalidate. Read more: https://nextjs.org/docs/messages/invalid-getstaticprops-value

I am not sure what I am doing wrong. I want to get data from the database and update it every 15 seconds. Any help would be greatly appreciated.

CodePudding user response：

revalidate is for getStaticProps, you are using it on getServerSideProps and this does not allow I recommend you to see this library: https://swr.vercel.app/