Background: Recently the company projects need to optimize the interface back to within 100ms. It is necessary to do processing on the interface logic, optimization data,
Just to use Redis cache, mysql, mongoDB optimization, today installed mongoDB4.2 on the record about Ali cloud centos;
Time will have time to look at the overall record of the background to optimize the interface ideas
1. The configuration of yum source MongoDB
Yum create source files :
vim /etc/yum.repos.d/mongodb-org-4.2.repoAdd the following :
[mongodb-org-4.2]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/4.2/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-4.2.asc
2. Install MongoDB
yum -y install mongodb-org
3, verify whether the installation was successful mongodb
mongo --version 
4, the relevant files to view mongodb installation directory
whereis mongo
The default MongoDB data files are stored in / var / lib / mongo directory, the log files are stored in / var / log / mongodb directory, and run as mongod user.
You can specify the data file directory and log file directories by modifying the /etc/mongod.conf file.
For more information about log path and data storage path refer to https://docs.mongodb.com/manual/reference/configuration-options/#systemLog.path
And https://docs.mongodb.com/manual/reference/configuration-options/#storage.dbPath .
If you change the user runs MongoDB, you must modify the / var / lib / mongo and / var / log / mongodb permission, so that the corresponding user can access modify permissions to run.
5、Centos7中启动mongo
systemctl start mongod.service
After you start to view the log cat /var/log/mongodb/mongod.log
See the log as shown below was found, i.e. start successfully
6. Set the boot
systemctl enable mongod.service7. Stop MongoDB
systemctl stop mongod.service8. Restart MongoDB
systemctl restart mongod.service9.mongodb remote connection configuration is as follows:
1. Modify the configuration file mongodb.conf
Command: vim /etc/mongod.conf
The bindIp = 127.0.0.1 this line is commented out or modified bindIp = 0.0.0.0
2. Restart mongodb Service
命令：systemctl restart mongod.service
3. Open a firewall port 27017
命令：iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 27017 -j ACCEPT
4. Remote Connection
To connect the IP: 121.199.56.177
Command: mongo 121.199.56.177:27017
This may be connected to the 121.199.56.177 mongodb / test database
The new version of Navicat has support mongoDB
perfect！！！
Reference: https: //www.cnblogs.com/jinxiao-pu/p/7121307.html
https://zhuanlan.zhihu.com/p/34526844
https://blog.csdn.net/zqx1205/article/details/75314266