In recent project development, the company used the native mongo for data operation, and found the following native operation methods for a long time
1. Encapsulate ip and port as ServerAddress object
ServerAddress address = new ServerAddress(ip, port);
2. Next, encapsulate the user name, databas ...
Posted on Sun, 26 Jan 2020 10:54:02 -0800 by salmon
Front of Article
This content is just to introduce the most basic use and configuration of mongodb. As a well-known database, it has quite a lot of advanced usage. It will expand to introduce a lot of content. Of cours ...
Posted on Thu, 23 Jan 2020 21:06:36 -0800 by rusty1001
The current test environment is on the same server, and the primary and secondary servers are distinguished by ports
*Main service port: 27027
*From service port: 27028
Configuration validation file
openssl rand -base64 741 > mongo.key
chmod 700 mongo.key
# The file needs to be copied to the primary service and the secondary service respe ...
Posted on Fri, 10 Jan 2020 09:20:29 -0800 by cityboy101
Environment: mongodb3.6.16 binary installation
1. Introduction to mongoexport parameters and syntax:
The mongoexport tool in Mongodb can export a collection to a JSON or CSV file.Exported data items can be specified by parameters, or data can be exported according to specified conditions.
Mongoexport-h IP--port port port-u username-p password- ...
Posted on Sun, 05 Jan 2020 11:27:37 -0800 by matthewc
MongoDB is written in C + +, which is an open source database system based on distributed file storage. In the case of high load, adding more nodes can guarantee the server performance. MongoDB aims to provide scalable high-performance data storage solutions for WEB applications. MongoDB stores the data as a document ...
Posted on Mon, 30 Dec 2019 22:04:26 -0800 by matthewd
Select the drop-down box, label and button, and a table view to display the data
Click save, then select compile form to compile the code, then select form code generator, and select the following functions
Click forms code generator and select
To generate a function, you will have the following fi ...
Posted on Sun, 29 Dec 2019 12:52:47 -0800 by duncanmaclean
(1) MongoDB is a database based on distributed file storage. Written in C + +. It aims to provide scalable high-performance data storage solutions for WEB applications.
(2) MongoDB is a product between relational database and non relational database. It has the most abundant functions and is the most like relational database. ...
Posted on Fri, 27 Dec 2019 00:35:37 -0800 by anser316
1. Select field
In MongoDB, the selection field is also called projection, which means that only the data of the required field is selected, rather than the data of the whole document field. If a document has five fields, but only three fields are displayed, then it is very beneficial to select only three fields.
The second optional parameter t ...
Posted on Thu, 19 Dec 2019 03:44:17 -0800 by taha
I. database version
II. Add user authentication for mongo
1. Create super user
#Note the version here (confirm that mongo is the same as the mongo of the added user)
MongoDB shell version: 4.0.0
Posted on Tue, 17 Dec 2019 14:44:44 -0800 by Waldir
Use Multithread to get the information of a recruitment website, use environment py3, and directly code without saying much
You can't do without the guide bag
import threadingimport requestsfrom pyquery import PyQuery as pqimport jsonfrom pymongo import MongoClientfrom fake_useragent import UserAgentimport timefrom config import *
I'm using Mo ...
Posted on Mon, 09 Dec 2019 21:32:47 -0800 by YOUAREtehSCENE