How to setup redis on loopback - redis

Question

I tried Redis on my node.js server before, the script looks like this:
//...
redisClient = redis.createClient();
redisClient.on("connect", function (err) {
console.log("redis terkoneksi");
});
redisClient.on("error", function (err) {
console.log("Redis Error " + err);
});
//...
//redisClient.set(...
//redisClient.get(...
At this time I want to try to install the redis loopback using the 'loopback-connector-redis' plugin. I have installed NPM, but I don't know how to use it. I have tried writing like this:
var DataSource = require('loopback-datasource-juggler').DataSource;
var ds = new DataSource('redis');
ds = redis.createClient(); //script error (createClient is not function)
ds.on("connect", function (err) {
console.log("redis terkoneksi");
});
ds.on("error", function (err) {
console.log("Redis Error " + err);
});
there are two questions I have:
1. how to use redis on loopback?
2. How to write correctly so that it can refer to the redis 'set', 'get', etc?
I will receive all the answers and suggestions, thank you.
best regards.

Answer 1

LoopBack provides two flavors of Redis connector.
Community-maintained loopback-connector-redis which is implementing CRUD-like storage API using Redis as the "database".
loopback-connector-kv-redis providing a key-value API that's closer to how Redis is typically used.
Since you are mentioning set and get commands, my recommendation is to use the KV connector. See https://github.com/strongloop/loopback-example-kv-connectors/tree/master/redis.lb3x for a full working example.
(1)
Create a datasource backed by the Redis KV connector.
Example: server/datasources.json
{
"db": {
"host": "127.0.0.1",
"port": 6379,
"name": "db",
"connector": "kv-redis"
}
}
(2)
Create a new model to represent the KeyValue data and operations.
Example: common/models/color.json
{
"name": "Color",
"base": "KeyValueModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {},
"validations": [],
"relations": {},
"acls": [],
"methods": {}
}
(3)
Attach the model to the datasource.
Example: server/model-config.json
{
"Color": {
"dataSource": "db",
"public": true
}
}
Now you can access all KeyValueModel methods on your model, either via REST API or from JavaScript:
const Color = app.models.Color;
await Color.set('my key', 'my value', {/*options*/});