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JRE (Java Runtime Enviroment) is the runtime environment of Java. JDK (Java Development Kit), also known as J2SDK (Java2 Software Development Kit), is a Java development kit.

In this article, we will learn more about the key terms used in website security testing and their testing methods.

To configure ISP routing, users first need to add the subnet entry to an ISP, and then can configure the ISP routing with the ISP name as the destination.

The Django user authentication system provides a built-in User object, which is used to record the user's username, password and other personal information.

According to different implementation technologies, it can be divided into DNS load balancing, HTTP load balancing, IP load balancing, link layer load balancing, etc.

Load Balancing is simply to form a server cluster with multiple servers, and then assign "work tasks" to the server cluster according to the rules we set.

Set up a load balancing server (Load Balancer, LB), all user requests are sent to him, and then it is sent to each server.

Lvs is software load balancing. LVS is based on the netfilter framework and mainly works on the INPUT chain. Register the ip_vs_in HOOK function on INPUT to perform the main IPVS process.

We need a traffic scheduler to distribute a large number of user requests to different servers in the back-end cluster in a balanced manner through a balanced algorithm. This is the load balancing.

MongoDB sharding, why do you need Sharded cluster? MongoDB currently has three core advantages: flexible mode, high availability, and scalability.

Apache is a well-known open source web server, composed of three levels: kernel, standard modules, and modules provided by third parties.

This article describes how to write a shell script to read files in Ubuntu 18.04. Demand function: read each line display from the file, count the total number of lines, and specify the file during the shell operation.

As the hub of the Internet, routers are developing in the three directions of faster speed, better service quality, and easier integrated management.

Routers are usually located at the network layer, so routing technology is also a technology related to the network layer.

Routing is the process of selecting a path for traffic in a network or between or across multiple networks. This is mainly for some basic concepts of routing under linux.

Front-end routing is different from traditional routing in that it does not require a server to parse, but is implemented through a hash function or history API provided by H5.

In many cases, Ubuntu is required to execute some specified commands when booting, and the operation methods are recorded here.

Let's first list the basic data types provided by Python: numeric values (integer, floating point, complex, Boolean, etc.), strings, lists, tuples, dictionaries, sets, etc.

Apache is specifically used to provide HTTP services and related configurations, and Tomcat is a JSP server developed by the Apache organization under the JSP and Servlet standards that comply with Java EE.

I'm using docker compose to run my application. For this, I need to set the host inside the container (it depends on the environment I'm running in).