mongodb

上海·2020线下年会来了！| MongoDB,More than Document Database.

由 拟墨画扇 提交于 2021-02-11 13:53:12
2020年MongoDB中文社区年终大会 一起重新认识MongoDB！ （2021-1-8 上海线下） DB-Engines是对数据库管理系统的受欢迎程度进行排名的网站，近年来，MongoDB在DB-Engines 数据库流行度排行榜稳居榜单前五，在DB-Engines Ranking上Relational环抱中赫然出现一个Document。 对于MongoDB，不少朋友可能还带着疑惑： MongoDB究竟是一个怎样的存在？ 为什么MongoDB可以突破关系型的重围出现在大家的视野之中，并连续几年位居前五？ MongoDB仅仅是一个文档型数据库吗？ 跟其它数据库相比，MongoDB具有怎样的特性？ MongoDB有什么应用场景和解决方案？ 2020 跨时代的一年，MongoDB中文社区带大家重新认识 MongoDB。 01 大会速递 MongoDB,More than Document Database. 时间：2021年1月8日（星期五）9:00-17:30 地点：上海市静安区市北高新园区江场三路258号上海市大数据产业基地商务中心三楼宴会厅中厅 大会名额：200名 报名链接： http://hdxu.cn/RInMN *大会优享票：9.9元优享票，联系小芒果领取（微信ID：mongoingcom) 长按识别二维码 添加小芒果微信 并根据提示进行回复获取优惠票 添加后请备注

Exclude nested field from encryption Mongoose encryption

由 邮差的信 提交于 2021-02-11 13:49:01
问题 So i am using an npm package called mongoose-encryption all is great except one important thing. I have an array called reports and it has alot of objects in it. Each object has one unique field called report_id the thing is i need to perform a delete operation based on that ID but if i encrypt it mongoose apparently cant find it. For that i excluded some fields like the docs said but i cant apparently exclude a nested field i tried this: usersSchema.plugin(encrypt,{secret:sigKey

mac: command not found: mongod

由 泄露秘密 提交于 2021-02-11 13:46:29
问题 I installed mongodb by brew on my MacOS as the mongodb official documentation, but I tried to run MongoDB manually as a background process, use command "mongod --config /usr/local/etc/mongod.conf --fork". Then the terminal displayed the message is : command not found: mongo. Did I miss any steps? 回答1: The above error appears when mongodb executable is not included in the PATH environment variable. MongoDB gets installed to /usr/local/bin/mongod The command 'mongod --config /usr/local....'

mac: command not found: mongod

由 这一生的挚爱 提交于 2021-02-11 13:44:28
问题 I installed mongodb by brew on my MacOS as the mongodb official documentation, but I tried to run MongoDB manually as a background process, use command "mongod --config /usr/local/etc/mongod.conf --fork". Then the terminal displayed the message is : command not found: mongo. Did I miss any steps? 回答1: The above error appears when mongodb executable is not included in the PATH environment variable. MongoDB gets installed to /usr/local/bin/mongod The command 'mongod --config /usr/local....'

How to update every document in collection based off another collection with Mongoose

由 只谈情不闲聊 提交于 2021-02-11 13:43:29
问题 I have a collection with a single document that contains many stats of different people. It is structured like so: // Stats list: [{ id: .... , lastUpdated: ... , stats: { Person1: {stat1: 0, stat2: 0, stat3: 0}, Person2: {stat1: 0, stat2: 0, stat3: 0}, ... Person100: {stat1: 0, stat2: 0, stat3: 0} } }] These stats are updated every 24 hours. Now I have a few hundred listings that contain a specific list of the people in the first collection. // Listings: [{ id: ..., persons: { Person1:

mongodump from remote node - unable to authenticate using mechanism “SCRAM-SHA-256”

由 烈酒焚心 提交于 2021-02-11 13:41:45
问题 Tried taking dump from a remote node and got the following error: Failed: can't create session: could not connect to server: connection(): auth error: sasl conversation error: unable to authenticate using mechanism "SCRAM-SHA-256": (AuthenticationFailed) Authentication failed. Tried two methods to take dump from the remote node. But got the same error in both the methods. # Method 1 mongodump -h remoteip@port -u xxx -p xxx --db xxx --authenticationDatabase xxx # Method 2 mongodump --uri

Getting NULL data from collection from MongoDB Atlas

由 ﹥＞﹥吖頭↗ 提交于 2021-02-11 13:41:43
问题 I have connected my code to MongoDB Atlas using Mongoose... even though the collection has a data in it its shows null in response. I want to know the exact issue and troubleshoot it, because the collection has the data required Collection details are in this image: 1. Connectivity Code - const mongoose = require('mongoose') const uri = "mongodb+srv://<user>:<password>@cluster0-3awwl.mongodb.net/"; mongoose.connect(uri, { dbName: 'bing_bot' }).catch((e) => { console.log('Database connectivity

Update one field on nested array document

由 随声附和 提交于 2021-02-11 13:35:50
问题 Let say i have a schema like this: { "_id" : ObjectId("5f0c64e4dd0a36b93c7deafa"), "name" : "Asd", "email" : "asd@asd.com", "created_at" : ISODate("2020-07-13T20:43:00.871+0000"), "updated_at" : ISODate("2020-07-13T23:08:26.149+0000"), "family_members" : [ ], "rooms" : [ { "_id" : ObjectId("5f0c98826f0321f6986755da"), "name" : "Ruang Makan", "created_at" : ISODate("2020-07-14T00:23:14.839+0000"), "updated_at" : ISODate("2020-07-14T00:23:14.840+0000"), "devices" : [ ] }, { "_id" : ObjectId(

Retrieve Mongoose Query Queue Time Metrics

由 久未见 提交于 2021-02-11 13:30:10
问题 In order to optimize the connection pool size, I thought it would make sense to graph query queue times. Is it possible to retrieve this metric from Mongoose? 回答1: See here for node monitoring. You need cmap events that apparently aren't documented there, see Ruby docs for example but they should be published by the node driver also. Track ConnectionCheckOutStarted and ConnectionCheckOutSucceeded and subtract the times to get the wait time. 来源： https://stackoverflow.com/questions/63652084

Retrieve Mongoose Query Queue Time Metrics

由 限于喜欢 提交于 2021-02-11 13:29:05
问题 In order to optimize the connection pool size, I thought it would make sense to graph query queue times. Is it possible to retrieve this metric from Mongoose? 回答1: See here for node monitoring. You need cmap events that apparently aren't documented there, see Ruby docs for example but they should be published by the node driver also. Track ConnectionCheckOutStarted and ConnectionCheckOutSucceeded and subtract the times to get the wait time. 来源： https://stackoverflow.com/questions/63652084
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