const express = require("express");
const redis = require("redis");
const app = express();

const client = redis.createClient({
  url: "redis://[email protected]",
});

client.on("connect", function () {
  console.log("redis connected");
  console.log(`connected ${redisClient.connected}`);
});

client.on("error", (err) => {
  console.log(err);
});

app.listen(process.env.PORT || 3000, () => {
  console.log("Node server started");
});

The above code does not show any connection to redis server even though I have checked the EC2 redis instance by connecting using Redsmin. hosting details in Redsmin

This is a very simple thing to do but the error that I get cannot be googled.

Node server started C:\Users\Sithira_105661\Desktop\Projects\Learning\Redis\node_modules@node-redis\client\dist\lib\client\index.js:387 return Promise.reject(new errors_1.ClientClosedError()); ^

ClientClosedError: The client is closed at Commander._RedisClient_sendCommand (C:\Users\Sithira_105661\Desktop\Projects\Learning\Redis\node_modules@node-redis\client\dist\lib\client\index.js:387:31) at Commander.commandsExecutor (C:\Users\Sithira_105661\Desktop\Projects\Learning\Redis\node_modules@node-redis\client\dist\lib\client\index.js:160:154) at Commander.BaseClass. [as set] (C:\Users\Sithira_105661\Desktop\Projects\Learning\Redis\node_modules@node-redis\client\dist\lib\commander.js:8:29) at Object. (C:\Users\Sithira_105661\Desktop\Projects\Learning\Redis\redis.js:19:8) at Module._compile (node:internal/modules/cjs/loader:1101:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10) at Module.load (node:internal/modules/cjs/loader:981:32) at Function.Module._load (node:internal/modules/cjs/loader:822:12) at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12) at node:internal/main/run_main_module:17:47

Help me understand the issue. Thanks in advance.

CodePudding user response：

Please check your ec2 redis connection

    const client = redis.createClient({
       url: "redis://username:password@ec2_endpoint:port",
     });

Connection string format: redis[s]://[[username][:password]@][host][:port]

CodePudding user response：

finally found the solution. I used node-redis 3.0.0 rather than 4 and the code works fine. I do not know why it does not work in latest node-redis . If any of you guys are getting this issue use node-redis 3