Can I cache the peer information to redis and use it to send message?

Dear all,

I have a task to send multiple messages to just ONE person by him username. I got this error FloodWaitError: A wait of 24597 seconds is required (caused by contacts.ResolveUsername)

So, my idea is use Redis to cache the peer information and use it to sending message to the same people the next time.

I am following this article to rebuild the peer object by the cached information https://gram.js.org/beta/classes/Api.PeerUser.html

 var u = {
    peer: { 
      userId: BigInt(xxx), 
      className: 'PeerUser',
      CONSTRUCTOR_ID: 1498486562,
      SUBCLASS_OF_ID: 47470215,
      classType: 'constructor'
    }
  }

var p = new Api.PeerUser(u.peer);

Then send message by the API

let res = await client.invoke(new Api.messages.SendMessage({
        peer: p,
        message: message      
}));
console.log(res)

I got this error:

Error: Could not find the input entity for {"userId":"xxx","className":"PeerUser","CONSTRUCTOR_ID":1498486562,"SUBCLASS_OF_ID":47470215,"classType":"constructor"}.

Can you tell me why? Thanks for your time!

[painor]

it’s not a bug. this is just how javascript works.

you can’t use normal numbers to represent big integers

[laocoi]

I try Helpers.returnBigInt('-3563441647559576810') and it work. I think there is a bug at here