Online Trends

OpenVPN is an open source commercial VPN service software, a virtual private network that can provide secure access to remote resources.

Enabling access control for MongoDB deployment will enforce user authentication, requiring users to identify themselves when logging in to the MongoDB system.

If you want to log in to the Magento backend, "Username" and "Password" are required fields. Therefore, resetting the administrator password is very important for every website.

As the data storage service of the application, mysql must realize the high availability of the mysql database. The technology that must be used is database replication.

In addition to executing code on behalf of the user program, the kernel can also be activated by an asynchronous hardware interrupt and then run in the interrupt context.

What is the difference between an authoritative DNS server and a recursive DNS server? The Domain Name System (DNS) is the phone book of the Internet.

The kernel is responsible for implementing the core functions of the operating system. The kernel does not include application programs.

There was a test machine this morning. When I checked with ps, I found that I could not execute the command and returned "-bash: fork: cannot allocate memory".

In this tutorial, we will configure pfSense's multi-WAN settings to achieve load balancing and failover. Multi-wan settings can increase Internet bandwidth, and bandwidth can be load-balanced and failed over as needed.

This article will take the core functions of the kernel as a starting point to describe the overall architecture of the Linux kernel and the main software subsystems under the architecture.

The Linux kernel implements many important architectural attributes. At a higher or lower level, the kernel is divided into multiple subsystems.

Thinking of building a voice server by myself, I found a voice software called Mumble. Its voice client supports all platforms. Not much to say, the next step is my build process

Linux supports many different file systems: Such as standard Ext2 and Ext3 file systems, ReiserFS, XFS, VFAT, etc.

The kernel is like a library, providing a set of system-oriented commands. System calls are just like calling ordinary functions to applications.

Speaking of nginx, we often use two important functions of nginx, reverse proxy and load balancing, today I will share with you Nginx reverse proxy and load balancing

The VNC solution is relatively easy to configure, and the VNC solution supports multiple connection methods, such as accessing the Linux desktop through a browser, eliminating the need to install a client.

In this article, you will learn to use xtrabackup to perform hot backup and incremental backup of MySQL innodb tables.

The Innodb engine provides support for database ACID transactions and implements the four isolation levels of the SQL standard. MyISAM is the default engine of MySQL.

PostgreSQL implements table inheritance, which is a useful tool for database designers, SQL:1999 and later versions define a type inheritance feature.

Here I have to explain the state of the firewall. For example, if you use ssh to access remotely, your host will communicate with the remote host.