mongodb

问题 I have read some solutions and wonder if I can update (not delete) a document in mongodb if the date is expired after 2 days. Like this. date:2019-02-15 status:not expired After 2 days update the status into expired . Here is my code for posting a document. var bloodstock = new Bloodstock(); bloodstock.date = new Date(); bloodstock.status = "not expired"; bloodstock.save(function(err) {}); 回答1: Run a cron at daily midnight to compare the date. If the date exists 2 days update the status on

问题 i am a newbiew and following a yt video https://www.youtube.com/watch?v=kwPWwczwi6c&list=PLsY8aWop1tAHigCqvxZ61XK3a8I509VRx&index=2 after creating a server.js file and running nodemon server.js file entered below var express = require("express"); var app = express(); var formidable = require("express-formidable"); app.use(formidable()); var mongodb = require("mongodb"); var mongoClient = mongodb.MongoClient; var ObjectId = mongodb.ObjectId; var http = require("http").createServer(app); var

问题 My MongoDB schema is built with embedded documents like this: { "_id" : ObjectId("5f0c64e4dd0a36b93c7deafa"), "name" : "Asd", "email" : "asd@neurondigital.tech", "password" : "$2b$12$66OTK8mSWELMF5YiF9HMUuHEeOVLI61aINjWs1Cmn1699lLJfz/7y", "auto_ml" : true, "notification" : true, "photo" : null, "tariff_id" : null, "city" : null, "sub_district" : null, "village" : null, "latitude" : null, "longitude" : null, "created_at" : ISODate("2020-07-13T20:43:00.871+0000"), "updated_at" : ISODate("2020

问题 I just created a new empty cluster on mongoDB atlas. I chose the M20 cluster tier with 60GB storage limit. However, as soon as my cluster was created, it showed that there are 28 current connections on the server hosting the replica set (keeps increasing and decreasing, even reached 35). It also shows that the current disk space used is 6.3GB even though the cluster was just created and empty. Is this normal on Atlas? And why is the number this high? This bugs me as there is a limit on the

问题 So, I have this app that I'm starting and I'm going with MERNG stack using Apollo. I was doing research by reading blog posts and watching videos in order to have a better understanding of how GraphQL works (never actually worked with it). At some point, I started to see examples of relationships between db models such as "posts from a user". For example: import { model, Schema } from 'mongoose'; const postSchema = new Schema( { title: String, createdBy { type: Schema.Types.ObjectId, ref:

问题 I have schema like this: this.schema = new Schema({ userEmail: String environments: [ { envId: String, appPreference: String, language: String, timeZone: String, summaryNotificationSchedule: { timeOfTheDay: String } } ] }); Update request: { "envId": "u2", "appPreference": "put2", "timeZone": "gmt", "summaryNotificationSchedule.timeOfTheDay": "32400", } As you can see, I am not sending "language": "abc", in the update request and in the result I see the language field is removed. I want to

问题 I was using mongodb 4.2.9 on ubuntu 18.04 I installed it with package manager. Now I to update it to 4.4 version used package manager following --> https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/ instructions. Installation was ok but when I write mongod -version command it shows - db version v4.2.9 . I tried to re-install again it says mongodb-org is already the newest version (4.4.1). but mongod -version command it shows - db version v4.2.9 . How can I get rid of this

问题 I have two containers linked together by Docker compose and I can successfully ping the container containing MongoDB from the one containing my node.js app using the hostname. However, when it comes to actually connecting to the database, node.js tells me the connection is refused. I am using Docker for Mac if that helps. mongoose.connect("mongodb://mongo", {server: {auto_reconnect: true}}).catch(error => { console.log("DB CONNECTION ERROR"); console.log(error) }); Here is my docker-compose

问题 I am trying to implement service mesh using istio and envoy for a service which requires connecting to external mongodB server but for some reasons, my service is unable to reach the external mongodB server from istio proxy Below is the gateway and virtual service configuration for my service apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: gtreviews spec: selector: istio: ingressgateway servers: - port: number: 7890 name: http protocol: GRPC hosts: - "*" --- apiVersion:

问题 I'm trying to convert my Nodejs Express app to Loopback 4 and I can't figure out how to increment a counter. In my Angular 9 app when a user clicks an icon a counter is incremented. This works perfectly in Express In Express const updateIconCount = async function (dataset, collection = 'icons') { let query = { _id: new ObjectId(dataset.id), userId: dataset.userId }; return await mongoController.update( collection, query, { $inc: { counter: 1 } }, function (err, res) { logAccess(res, 'debug',