Can't retrieve value in Redis in Node.js?

Question

I can store a key/value in Redis but I can't retrieve the value.

store.js

var client = redis.createClient();

token ='ghg782Nm';
webhook = 'http://test.com'; 

//store the key/value in Redis   
client.set(token, webhook, function(err, reply) {
        if (err) {
          console.log(err);
        }
});

//get the value 
client.get(token, function(err, value) {
  if (err) {
   console.log(err);
  }
console.log(value); //return 'http://test.com'

});

I get the right value here but when I want to get it from a different file (somewhere_else.js), the value is null.

somewhere_else.js

var client = redis.createClient();

token ='ghg782Nm';

//get the value 
client.get(token, function(err, value) {
  if (err) {
   console.log(err);
  }
console.log(value); //Return null

});

What did I miss? Thanks a lot!

Did you try using the same client instance between the two files? Perhaps the set() hasn't finished before you call get() from the other file? — mscdex
– mscdex, Commented Aug 8, 2015 at 1:43
Create the client in a separate file, and export it as a module. Then require this file in store.js and somewhere_else.js, and use it for both the operations. But make sure you're calling get only after set is finished. — Abhishek Goyal
– Abhishek Goyal, Commented Aug 9, 2015 at 11:57

trquoccuong · Accepted Answer · 2015-08-08 02:25:13Z

1

I test your code but everything ok. Run score.js first then run somewhere_else.js. If you get null may be, get() run before set()

answered Aug 8, 2015 at 2:25

trquoccuong

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1 Comment

user420574 Over a year ago

It's not possible, I run store.js first, get the "ok" reply from redis and then run somewhere_else.js.

Basit Anwer · Accepted Answer · 2015-08-15 04:50:50Z

1

Have you checked if the value resides in redis using redis-cli ? If yes then do

Redis.select(0, d function(.......)

It will select the database 0 although default is zero but just to be sure if the config is not tampered with.

answered Aug 15, 2015 at 4:50

Basit Anwer

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