Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

ioRedis can't delete key in redis cluster

See original GitHub issue

Configurations

ioRedis@4.9.0 (cluster mode) connect-redis@3.4.1 express-session@1.15.6 Redis Server Version: 5

Errors

ReplyErrorredis-parser.lib:parser in parseError errorCROSSSLOT Keys in request don’t hash to the same slot

the Reply errors contains :

{ command: { args: [ sess:6BSHHdpoqDVhpqWuOqrunZcqsUadtSEn, ], name: del } }

My code

const express = require('express');
const session = require('express-session');
const Redis = require('ioredis');

redisClient = new Redis.Cluster([{ 'host': host, 'port': port }]); 
const RedisStore = require('connect-redis')(session);

let sessionStore = new RedisStore({
    client: redisClient
});

app.use(session({
    secret: 'mysecret',
    saveUninitialized: false,
    resave: false,
    store: sessionStore,
    cookie: {
        maxAge: 60 * 1000 // 1 minutes 
    }
}));

Logs

connect:redis DEL “Nu-53UpCkkG4XutUUFULWlWH_s-M2IU9” ioredis:redis write command[10.2.0.29:6379]: 0 -> del([ ‘sess:Nu-53UpCkkG4XutUUFULWlWH_s-M2IU9’, ‘’ ])

After seeing that I suppose that ioredis add a blank parameters and this is why it can’t delete my session key.

What is expected ?

I expect that my session key will be deleted in my redis cluster.

Thank in advance for your reply 😃