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del function always return false
I want to get
true
if delete is successfully completed and
false
else. But
del
function always return false.
Environment
Node.js Version
:
14.7.0
Redis Version
:
5.0.4
Platform
:
Manjaro x64 20.0.3
You need to use
callbacks
in order to check the result of
del
command.
const redis = require("redis");
const client = redis.createClient();
client.set("test", "value", (err) => {
if (err) {
console.error(err);
} else {
client.del("test", (err2, numberOfDeletedKeys) => {
if (err2) {
console.error(err2);
} else {
console.log(numberOfDeletedKeys); // <-- this prints 1 if no error happened
client.quit();
});
});
To avoid using
callbacks
consider using
promises
.
const redis = require("redis");
const client = redis.createClient();
const util = require("util");
const set = util.promisify(client.set).bind(client);
const del = util.promisify(client.del).bind(client);
set("test2", "value")
.then(() => del("test2"))
.then((numberOfDeletedKeys) => {
console.log(numberOfDeletedKeys)
.catch((err) => {
console.error(err);
.finally(() => {
client.quit();
});
