Today we will try to address this question taking into account the following sections
We will address each of the mentioned sections and rest assured that after reading this complete article, you will understand how all these processes work.
The Domain Name System (DNS) is the telephone directory of the Internet. People access information online using domain names, such as nytimes.com or espn.com. Web browsers interact using Internet Protocol (IP) addresses. DNS translates domain names to IP addresses so that browsers can load Internet resources.
Today we will try to explain the essence of IoT (internet of things) although at first that concept is not familiar to you, you will be surprised about the importance it has and when it influences your daily life, and is not only limited to everyday life It is a concept that is already used in all areas, since it is widely used, but what is IoT?
Hello In this guide we will be seeing how to configure our docker container with ubuntu and nginx with port 80 exposed so that we can access our container from outside and as an additional one an ubuntu container with Haproxy and thus be able to have a load balancer configured with two web servers in different servers
The purpose of this guide is to be able to have 3 different servers each with its own configured docker container, 2 web servers and a load balancer.
Step 1 — Installing Docker on our servers:
The first step is to download…
A recursive function is a function that calls itself.
Yep, that’s it. No, I’m not initially misleading you this time. I promised conciseness, didn’t I?
To put the ideas into practice we will solve a simple exercise where we are creating a function to replicate the operation exponentiation using recursion in C language and analyze how the information is stored in the memory stack following the next code.
Python is an interesting programming language with a lot of features and utilities. It follows a work style architecture based on the principle of “First-Class Everything”. This concept centers around the idea of having every single item of data in python belonging to a class as an object with attributes and methods.
This means that things such as integers, floats, structures of data, functions, and strings are all objects. They can all be stored in variables, passed between functions, and even be returned from them. Variables are simply references and don’t actually hold data themselves, kind of like a pointer.
Class attributes are attributes which are owned by the class itself. They will be shared by all the instances of the class. Therefore they have the same value for every instance.So a class attribute is a Python variable that belongs to a class rather than a particular object. It is shared between all the objects of this class and it is defined outside the constructor function,
__init__(self,...), of the class.
Instance attributes are owned by the specific instances of a class. This means for two different instances the instance attributes are usually different.Therefore instance attribute is a Python variable belonging…
Functions are blocks of code that are reusable throughout a program. Using them saves time, removing the need to rewrite code multiple times. Libraries, like functions also save time in that they make functiones reusable in multiple programs.
Static libraries, while reusable in multiple programs, are locked into a program at compile time. Dynamic, or shared libraries on the other hand, exist as separate files outside of the executable file.
The downside of using a static library is that it’s code is locked into the final executable file and cannot be modified without a re-compile. …
For us to be able to type ls *.c in the shell terminal there must be a shell terminal. Sound logical, but there is a lot more to it, let us break it apart to understand it. The shell terminal is this being where we write a command and the magic happens. The shell is defined as the outermost layer of an operating system, which stands in direct contrast to the kernel, the innermost part of the operating system. The shell is the part we humans can interact with. …
static library or statically-linked library is a set of routines, external functions and variables which are resolved in a caller at compile-time and copied into a target application by a compiler, linker, or binder, producing an object file and a stand-alone executable.
when you compile a source file you get an object file. Depending on your platform its extension may be .o or .obj or anything else. A static library is basically a collection of object files, kind of like a .zip file but probably not compressed. The linker, when trying to generate an executable tries to resolve the referenced…
C source files are by convention named with .c extension and we use the command “gcc” to compile C source files. (GCC stands for GNU Compiler Collection and it is a compiler system produced by the GNU Project.)
Preprocessing is the first step. The preprocessor obeys commands that begin with # (known as directives) by:
If you included a header file such as #include <stdio.h>, it will look for the stdio.h file and copy the header file into the source code file.
The preprocessor also generates macro code and replaces symbolic constants…