Node_redis - how to remove a key?

Question

Is there any way to remove/delete an entry by key, using Node_redis? I can't see any such option from the docs..

Sf

Answer 1

Here you can see what redis commands are work in this library node_redis github

As you can see "del" command is in the list.

And this command allow you delete keys from selected db as Jonatan answered.

Euler

@Euler hdel is not there but it works. The reference should be redis.io/commands since "It supports all Redis commands" (quoted from github github.com/NodeRedis/node_redis). – Kroon

@Euler nevermind, i was looking at ioredis github.com/luin/ioredis/blob/master/lib/command.js – Kroon

The link provided is now 404ing on github.com. – Villein

Answer 2

You can del use like this:

redis.del('SampleKey');

Cerenkov

This is the actual answer, giving a link to the redis docs was not an answer, the question was tagged with node-redis – Ppm

Answer 3

As everyone above has stated you can use del function. You can assure the successful delete operation using this syntax.

client.del('dummyvalue', function(err, response) {
   if (response == 1) {
      console.log("Deleted Successfully!")
   } else{
    console.log("Cannot delete")
   }
})

Because the DEL command will return (integer) 1 in successful operation.

    redis 127.0.0.1:6379> DEL key 
    Success: (integer) 1
    Unsuccess: (integer) 0

Westley

Answer 4

If I remember things correctly, del should do it.

Circlet

Answer 5

Hope this will help you

let redis = require("redis");

var redisclient = redis.createClient({
  host: "localhost",
  port: 6379
});

redisclient.on("connect", function () {
  console.log("Redis Connected");
});

redisclient.on('ready', function () {
  console.log("Redis Ready");
});

redisclient.set("framework", "AngularJS", function (err, reply) {
  console.log("Redis Set" , reply);
});

redisclient.get("framework", function (err, reply) {
  console.log("Redis Get", reply);
});

redisclient.del("framework",function (err, reply) {
  console.log("Redis Del", reply);
});

Keavy

Answer 6

Suppose we want to delete key="randomkey":

redisClient.del(key, function(err, reply) {
  if (err)
    throw err;

  console.log("deleteRedisKey",reply)
  resolve(reply);
});

Becker

Answer 7

Using sailsJs you can do this :

let id_todel = "5b845f9ea7f954bb732fdc52";
await sails.getDatastore('redis').leaseConnection(function during(db, proceed) {
      db.del(id_todel );
      return proceed(undefined, undefined);
});

Hedberg

This is specific to sails – Tourane