I really don t know how to take a title to describe it. I have two collections data collection: stores article information, such as status, category, time, etc. field collection, stores the field information of the article, because the fields of e...
problem description egg project uses mongoose mongoose to report error failed to connect to server, PRIMARY:hostA, master node SECONDARY:hostB, hostC; slave node one master and two slaves, both ports are 27017 copy set set:rs0 Url: mongodb: ...
problem description egg project uses mongoose mongoose to report error failed to connect to server, PRIMARY:hostA, master node SECONDARY:hostB, hostC; slave node one master and two slaves, both ports are 27017 copy set set:rs0 Url: mongodb: ...
the data format is as follows: * * { "_id" : ObjectId("5c1f795fbb0eb4399f554e08"), "pid" : ObjectId("5c10cf1acd6ff5730f265a8a"), _id "know" : "" }, * * { "_id&quo...
use express-http-proxy to delegate all api requests from the front end to another service, but the front end issues an api request. Time error connect ECONNREFUSED: 127.0.0.1 api 6667 at first I thought that the port was occupied or the mongodb servic...
use express-http-proxy to delegate all api requests from the front end to another service, but the front end issues an api request. Time error connect ECONNREFUSED: 127.0.0.1 api 6667 at first I thought that the port was occupied or the mongodb servic...
use express-http-proxy to delegate all api requests from the front end to another service, but the front end issues an api request. Time error connect ECONNREFUSED: 127.0.0.1 api 6667 at first I thought that the port was occupied or the mongodb servic...
problem description you can use await, but why not use traditional callbacks? related codes router.get( getArticles , async (ctx) => { let { sizes, pageNum } = ctx.query sizes = Number(sizes) pageNum = Number(pageNum) co...
this is an error message: : : must be used in order to connect successfully. It is useless to match environment variables. What is the reason for this? mongod.exe --dbpath "e: mongoDB data" ...
this is an error message: : : must be used in order to connect successfully. It is useless to match environment variables. What is the reason for this? mongod.exe --dbpath "e: mongoDB data" ...
this is an error message: : : must be used in order to connect successfully. It is useless to match environment variables. What is the reason for this? mongod.exe --dbpath "e: mongoDB data" ...
mongodb cookie cookie db.coolection.update({"cookie":"kr_stat_uuid=s83pP25734456; download_animation=1; device-uid=9447e910-f90a-11e8-85f3-853e28e448cb; kr_plus_id=643809727; krnewsfrontss=e88ee1dafbc74062e5286b2ad050d1c2; M-XSRF-TOKEN...
if I have a mongodb sharding cluster, I want to add incremental update query optimization (java writing, as middleware) on the shard, can I send the query request from the Mongose side, and wait for the data on the shard after being processed by the jav...
if I have a mongodb sharding cluster, I want to add incremental update query optimization (java writing, as middleware) on the shard, can I send the query request from the Mongose side, and wait for the data on the shard after being processed by the jav...
if I have a mongodb sharding cluster, I want to add incremental update query optimization (java writing, as middleware) on the shard, can I send the query request from the Mongose side, and wait for the data on the shard after being processed by the jav...
server.js const express = require( express ); const expressValidator = require( express-validator ); const mongoose = require( mongoose ); const bodyParser = require( body-parser ); const app = express(); const port = 5846; ** * * cons...
when you create a user, you will first query the data in the table. There is a mistake here in the query. I don t understand the reason. Please give me some advice: user model: models User.js const mongoose = require( mongoose ); const Schema = ...
problem description after the post request is sent by the current end, the database successfully writes the data, but the backend still reports an error of Error: connect ECONNREFUSED 127.0.0.1, and returns 500. the environmental background of the p...
configure use three sets of mongo4.0 replica sets enable data modification and commit using transactions concurrent modifications to the same document exist Code Logic Open the first transaction trans1 = mongSession1.startTransaction () t...
mongodb join table queries can either use mongoose s pupulate (), or aggregate $lookup, if you use two single table queries: one { _id: "joe", name: "Joe Bookreader" } two { patron_id: "joe", street: "...
the speed of direct transmission from A to C is relatively slow, so we want to add a B in the middle to improve the transmission speed. It is hoped that the command is transmitted from A to B s ip, but in fact, it is finally sent to C, so the step of lo...
I insert an empty data at the front of the returned data, and then use the index to judge, which will make it very inconvenient to manipulate the data. How do you achieve this requirement ...
this test project does not do cross-domain processing. Why does the first api get the data while the second api generates cross-domain? prompt No Access-Control-Allow-Origin header is present on the requested resource. Why? <template> &l...
first take a look at the code example: <template> <div ref="box">{{content}}< div> < template> <script> export default { data() { return { content: before } }, mounted() { this.next...
We are now using the vue+webpack framework, and then there is a requirement that we need to dynamically load the component module returned by the server, this module includes js json vue less and other format files, so I thought of using requirejs, to p...