when node.js connects to mongodb and executes MongoClient.connect (), it is very fast in the local environment, but very slow to get online, which takes more than 1 second, as shown below: var express = require( express ); var router = express.Router...
function searchData(){ NodeInfo.find({}, function(err, res){ if(err) { console.log("Error:" + err); } console.log(JSON.stringify(res,null,2)); 1 return res; }) } let a = searchData(); conso...
simulate a scenario: A single-node backup of MongoDB is done at 11:00, and the backup ends at 11:10, and the backup data at this time is 11:10. accidentally delete data at 11:20 in this case, we can restore the data to 11:10 through the backup data ...
question: at present, what images are stored in mongodb is only a relative drive, so how to provide a complete image path to the server when returning to the front end? in the database: products img1.png actual returned data: http: xxx.xxx.xxx.xx...
2018-06-01T21:50:27.381+1000 I STORAGE [initandlisten] WiredTiger message [1527853827:381260][6025:0x7fffb1251380], txn-recover: Recovering log 88 through 89 2018-06-01T21:50:27.448+1000 I STORAGE [initandlisten] WiredTiger message [1527853827:448472][...
linux system starts after installing MongoDB: . bin mongod: error while loading shared libraries: libssl.so.10: cannot open shared object file: No such file or directory ...
the bin directory was not found on the server. How to use the command mongodump-h for database backup. Thank you ...
...
I want to update the data of a field in the mongodb database in batches. The database is as follows. Use https: www.baidu.com to 127.0.0.1 in the database. { "_id" : ObjectId("5aaf69069c49ac25b89903b5"), "title" :...
the computer is a WIN 10 system I follow this tutorial to install mongoDB, http: www.runoob.com mongodb. but as soon as you enter the mongo link. Just report this error has been reinstalled several times, but it has not been solved. also chan...
if the network of mobile video, is poor, it will cause intermittent playback. There is no clear wait prompt for this pause in iOS, which is not a good experience. Can you download all the videos before playing them? ...
topic description when I was working on the project, I found that the value of antd initialValue changed the input form data and did not change with it when I did this, changing the value of searchFormData.loginName to the original input form data of...
Bookmarks exported by chrome,safari,firefox,ie I want to convert to objects in the following format { "title": "title", "addr": "href", "type": "site", folder "children...
form class: from flask_wtf import FlaskForm from wtforms import StringField,PasswordField,BooleanField,SubmitField from wtforms.validators import DataRequired,Length class LoginForm(FlaskForm): username = StringField( : ,validators=[DataRequired...
as shown in the figure there should be only one a, but it is normal to use find, using $( - sharpcrumbs a ). Size () shows 2. What is the reason? ...