ioredis cache not expiring

ioredis cache not expiring

I’m building a chatroom cache which should persist for 2 min in redis database, but even after using expireat method cache does not get cleared.

This is my code for storing the cache

Code

//check whether room already exists or not
//if not set certain expiry timestamp 

 const setMessage = async(room,from,message)=>{
  //check whether room exists or not
  client.lrange(room,0,-1,async(err,replies)=>{
    console.log(err,replies)
    if(replies.length==0)
      {
     
        const when = 24*60*60
        client.set(room,[],'EX',when,(err,ans)=>{//here in seconds
               console.log(`setting expiry at ${ new Date(Date.now() + when*1000)}`) //here in milliseconds 
        })
      }
  })
  
   await client.rpush(room,`${from}:${message}`);
   
}

Expected behavior This snippet of code should delete the key(room) from redis cache after completion of 24 hrs. But as a result, cache is persisted even after the completion of 24 hrs.

Dependencies “express”: “^4.17.1”, “ioredis”: “^4.28.2”

Is there any way to figure this out?

[luin]

No problem! If you are on a macOS can try out a GUI tool ex https://getmedis.com/ to inspect the TTL & value of keys easier.

[luin]

Oh I see. client.set(room,[],'EX' here since ioredis flats arguments, so the [] will be omitted. You need to provide a valid value ex client.set(room, 'anyvalue', 'EX', 24 * 3600).