I got REQUEST_TIMEOUT making many calls against a DB service with mongo, I have got some questions

[developez]

I have got a DB Service that uses mongo, I am using the already existent method "insert". After many calls in a short time I got a REQUEST_TIMEOUT. The issue is, that, finally the insert action is done because I am controlling all the data sent with a simple id, and I can see the json sent saved in the mongo collection.

But, my question is, when the call fails and it is "retryable", which is the method to fire again the call, there is a stack in the memory of the microservice? Is it used the transport? Or is a simple "setTimeOut"? How many retries are done in a REQUEST_TIMEOUT? Why the request_timeout is appear up?

Thank you

RequestTimeoutError: Request is timed out when call 'logs.insert' action on 'e0018-33060' node.
    at C:\...\TestingMoleculer\monitor-log\node_modules\moleculer\src\middlewares\timeout.js:42:14
    at runMicrotasks (<anonymous>)
    at runNextTicks (internal/process/task_queues.js:58:5)
    at listOnTimeout (internal/timers.js:523:9)
    at processTimers (internal/timers.js:497:7) {
  code: 504,
  type: 'REQUEST_TIMEOUT',
  data: { action: 'logs.insert', nodeID: 'e0018-33060' },
  retryable: true
}

The DB Service.

"use strict";
import {Context, Service, ServiceBroker, ServiceSchema} from "moleculer";

import DbConnection from "../mixin/db.mixin";

import DbService from "moleculer-db";

const MongoAdapter = require("moleculer-db-adapter-mongo");

export default class LogDbService extends Service{

	// @ts-ignore
	public  constructor(public broker: ServiceBroker, schema: ServiceSchema<{}> = {}) {
		
		super(broker);
		this.parseServiceSchema(Service.mergeSchemas({
			name: "logs",
			mixins: [DbService],			
			adapter: new MongoAdapter(process.env.MONGO_URI),
			collection: "logs",
			settings: {

			},
			hooks: {

			},
			actions: {
				/**
				 * The "moleculer-db" mixin registers the following actions:
				 *  - list
				 *  - find
				 *  - count
				 *  - create
				 *  - insert
				 *  - update
				 *  - remove
				 */			
				
			},
			methods: {
				
			},
			
		}, schema));
	}
}