Updating and Upgrading the Debian Linux system between new distro versions.

misc-articles

Upgrading Debian OS -  Linux Administration

Babel is a tool that takes your modern JavaScript code and transpiles it to code that older browsers can work with. Also, it can be used from the command line with a simple command and can be added to some existing building tool, like webpack with the babel-loader package.

web-dev-articles

Babel Transpiler - Overview

As a field of study, **machile learning** is classified as a subset of **artificial intelligence** where computer science and statistics are brought together for creating predictive models used to allow machines learn from historical data.

database-articles

Introduction to Machine Learning and Natural Language Processing

The Webpack is a tool for bundling modules or in another words, a tool for compiling JavaScript modules. And once installed it can be interacted with from the CLI or API.

The Webpack - Overview

This article focuses specially at some trick features that are more commonly found in the JavaScript language like prototype, hoisting, etc. And this article also focus on more general tasks, but here seem from the perspective of the JavaScript language and its core tasks.

JavaScript Trick Patterns - Part II

This article focuses at Object Oritented Programming (OOP), specially at the patterns and principles that are more inline with JavaScript development.

Javascript Object Oriented Programming (OOP) Pattern

A UML, que em português se traduz, Linguagem de Modelagem Unificada, é uma família de notações gráficas, apoiada por um metamodelo único, que tem como objetivo fazer a descrição e ajudar o projeto de sistemas de software. Ademais, enquanto linguagem a UML pode ser usada para a Especificação, Construção, Visualização, e Documentação de modelos para um sistema de software.

development-articles

UML e a Modelagem Orientada a Objetos

This article brings an overview of some trick features related to the DOM page and to the tasks that the JavaScript language takes part together with HTML and CSS to create and manage a web page. So, DOM events, event capture, event propagation, styling forms, security and accessiblity are some of the points seem in this article.

JavaScript Trick Patterns for the DOM - Overview

JavaScript Trick Patterns - Part I

The importance of developing software while maintain a production of a Clean Code comes from the fact that this discipline helps those who need to use the code, or to maintain, or even develp it further. Moreover, this not only helps others who use the code, but also helps the author himself whenever he has to revisit the code to inspect later, then a clean code would really help him also to catch up with it again. The essential patterns in a clean code can be seem as the indentation, semicolons, line length and naming convention.

Clean Code Methodology - Overview

According to many authors, to think like a programmer should be the same as to be thinking about the process of problem solving, or in other words, to think programmatically while follow the steps to solve problems in a more effective way.

Thinking Like a Programmer and Problem Soving - Overview

Docker is a open platform for developing, shipping, and running applications, and it works provinding the ability to package and run as application in a isolated environment called container.

Docker - Overview

CSS is a simple language for styling web pages, but it can quickly become very cumbersome when a projetcts site starts to grow. Some internal features from CSS itself can easily bring unintended changes to the project, just like its Cascade feature or the process where elements inherit properties from their parents. A CSS methodology brings then a set of guidelines and best practices to help the developer to achieve a more maintainable, scalable, reusable code. And some of these methodologies are: BEM, OOCSS, SMACSS, Atomic CSS, ITCSS, etc.

CSS Methodologies - Overview

The Open Web Application Security Project (OWASP) is a nonprofit foundation that works to improve the security of software, and servers as the base for developers and technologists to secure the web: Tools and Resources;  Community and Networking; Education & Training.

management-articles

Open Web Application Project Foundation (OWASP) - Overview

Infraestrutura de Chaves Públicas Brasileira ou ICP-Brasil é a hierarquia de confiança que viabiliza a emissão de certificados digitais para a identificação virtual do cidadão e de empresas, autoridade instituída pela Medida Provisória nº 2.000-2, de 24 de agosto de 2001. O modelo brasileiro de emissão de certificados digitais é o modelo de raíz única, em que a AC-Raiz é a primeira autoridade da cadeia de certificação, cujo papel é representado pelo Instituto Nacional de Tecnologia da Informação (ITI).

ICP-Brasil - Overview

Keycloak is an open-cource application that provides identity and authorization management, which allow users to to authenticate with Keycloak instead of authenticating with each individual application separately. For that reason the client applications managed by Keycloak does not have to deal with login forms, authenticating users and storing users. And the same with signing-out.

Keycloak Identity and Authentication Platform - Overview

User Authorization and User Authentication are some of the biggest priorities related to software applications, and it is directly related to the role of the applications and to how they are designed to interact with its users. nd there are several protocols created that aim to standardaze this important feature in software security, including: OAuth2, OpenID, SAML, etc.

Authorization and Authentication Protocols - Overview

Cryptography is the study and practice of techniques for secure communication in the presence of third parties, and nowdays it works with developing and analysing protocols which prevents malicious third parties from retrieving information being exchanged through various means. The roots of the word comes from the Greek language, where Krypto means secret or hiden, and Graphene means written.

Cryptography, Steganography and Criptanalysis - Overview

The concept behind a continuity business plan is the fact that unfortunate event cannot be averted all the time, even in sound organizations that have installed many standards and best pratices, or a risk management process. So, eventhough all those processes are very important and help to make a more robust operation, there still have some processes that have be thought in the case of a concret disrupt event hapenning. And these are the reason for devising a business continuity plan that will bring effort to keep the company running, at least in some capacity, that is for its essentials businesses.

Continuity Plan and Essentials for Business - Overview

The basic structure of information security has two primary focus or requirements, where the first one is related to the information itself and its contents, while the second refers to the persons who may use the information: the information and the user. And around these key factors arises a certain number of controls like: confidentiality, integrity, availability, authentication, authorization, nonrepudiation, etc.

Information Security - Overview

Risk management is an effort to minimize or mitigate risks, as it starts with the identification and evaluation of risk followed by optiaml use of resources to monitor and minimize the same. And now, as an general rule risk comes from uncertainty, and when he risk is assessed in the organizations the uncertainty is linked to its participation on the market place.

Risk Management - Overview

ITIL stands for Information Technology Infrastructure LIbrary, and it is a set of best practices for delivering IT services, to maximaze efficiency and bring predictability to the services provided, all in accord with the organization strategic plans. And has become the de facto standard in IT service management. So, ITIL works around any kind of organization to help them accomplish their services in a quality-driven and economical way.

ITIL - Service Management Framework

A project management methodology is a set of principles and practices, that is a framework, that guide the organization of projects to ensure maximum performance. The Project Management Body of Knowledge a guide for project management, developed by the Project Management Institute (PMI), is one example of project management methodologies on the market.

PMBOK and others Project Management Methodologies

Considering some definitions from Control Objectives for Information Technology (COBIT), which is a framework for governance and management specifically tailored to IT, Evaluate, Direct, and Monitor (EDM): which would cover the main governance activities, to access and evaluate the needs of the stakeholders, to direct through priorization and monitoring results, and, Plan, Build, Run, and Monitor (PBRM): which would cover the main management activities, that would mean to put the government dispositions into action and to be monitored.

IT Governance and Management - Overview

The cloud architecture is the way how individual technologies are integrated to form virtual clouds, that is the IT environments which abstract, and group, scale, and share the resources available in some network to be used as platform for the execution of applications and services. Organizations adopting cloud architecture often shift IT resources to the public cloud, eliminating the need for on-premises servers and storage, and there are different kind of cloud services like Platform as a Service (PaaS), Software as a Service (SaaS)and Infrastructure as a Service (IaaS).

Cloud Architectures - Overview

Containers are technologies which allow to package and isolate applications together with all their execution environment, there is, with all the arquives necessary to execute them. They are more portable, more resource-efficient in nature, more secure and easily to deploy.

Containerization - Overview

While the lightweight desing of web servers is enough to process high traffic of static resources there is request throughout the Internet, dynamic resources, often in the form of applications, requires additional assistance. The use of application servers insert another layer to the whole operation. So, not only the application servers is put in the middle of web servers and the precious database servers to help and to protect this operation, but it also is capable of providing program redundancy to the web server operation, beside the capacity to process more complicated business logic for requests, which, in terms, would make an attempt to SQL Injection much harder.

Application Servers - Overview

A web server is a kind of server that works as a middleman application between the actual server and the clients, pulling content from the server on each user request and returning it across the Web. And speaking in a more specific way, web servers are the machines responsible to store the web contents over the Internet, such as text, images, videos and application data. Their most common type of clients are the web browsers, which is a client application that makes requests to the web server from links or from URL addresses in general. The communication between server and clients is done through the Hypertext Transfer Protocol (HTTP).

Web Servers - Overview

A server is a computer designed to process and deliver data to others computers over a network, being web servers some of the most famous while they are responsible to process requests and deliver data across the Wide World Web. And, eventhough a server application software may be installed in most current machines, usually servers designate high end machines that are able to serve to a lot of clients. Some types of servers available are Web Servers, Application Servers and Storage Servers, etc.

Concepts and Types of Servers - Overview

As a programming paradigm, AOP aims to reduces code clutter and improve maintainability and readability of the code by isolating concerns at the application. It should be highlighted that AOP does not come to replace OOP, but to add and complement it by providing another way to the application to improve in modularity and also become cleaner.

Aspect Oriented Programming (AOP)

ReabbitMQ is a software that defines queues to which applications can connect in order to transfer messages. And that these messages could just be just a simple text message, or it could could be something more elaborated like some kind of metadata information to be use as resource in other applications, etc. And it uses the Advanced Message Queuing Protocol (AMQP).

RabbitMQ - Overview

AMQP was standardized in 2012, and it provides a platform-agnostic method for ensuring information safely transported between applications, and it is used in a variaty of areas like financial front office trading, ocean observation, transportation, smart grid, computer-generated animation, online gaming, etc.

Advanced Message Queuing Protocol (AMQP)

Segundo o tutorial online do PJe, o Modelo Nacional de interoperabilidade (MNI) é definido como a integração entre os sistemas, por meio da tecnologia Web Service, para garantir interoperabilidade, junto com segurança, para os processos judiciais, permitindo o intercâmbio de dados de maneira independente de tecnologias individuais sendo utilizadas, além de estar disponível para acesso por pessoas físicas, jurídicas ou por entidades.

Modelo Nacional de Interoperabilidade (MNI)

Web Services are software systems that follow some standards, protocols and architectural patterns for applying interoperation between machine communications over the Internet or some other network. Some common types of web services are nowdays are SOAP web services, RESTful web services, and GraphQL web services.

Web Services Technologies - Overview

Network communiction has made message-based exchange between applications a routine job, allowing for a much more diverse job of exchanging data and even the possibilities of realtime scenarios. So there is the necessity to define elements of architectural patterns, data formats and communication protocols, so the procedure can be properly achieved.

Data Exchange Formats and Patterns

In traditional web development the pages are rendered at the Server-Side, meaning that a server is responsible to receive requisitions from clients and return a web page to the client. But today there more ways of rendering pages, besides the use of many new architectures that aim for extending the experience of a web page or a web app. Models like Single Page Application (SPA), Progressive Web Application (PWA), the Flux Architecture, the Streams API, etc.

Front-end Architectures

Patterns is a recent practice that is beign introduced to the Front-end development context. One of the first patterns to be appear some years ago is the MVC (Model-View-Controller), a pattern dedicated to improve the software architecture by appling Separation of Concerns (SoC) to the software system.

Front-end Development Patterns

UI Design stands for User Interface Design and it is related to deal with brand and visual styles and assets from the product, while UX Design stands for User Experience Design, and it relates to the quality of interation between the user and the elements of the product and the services provided.

UI and UX Design

Usability is a quality attribute from software engineering to assesses how easy user interfaces are to use. It could also references the methods for improving ease-of-use during the design process.

Usability - Overview

Software Architecture and Software Design typically refers to bigger structures of a  software system, and how its smaller software components manage to carry out their tasks. They serve as a blueplrint for the system and a abstraction to deals with the systems complexities.

Software Architecture and Design

A software architecture pattern captures some design structures of the system so they can be reused. From the engineers point of view, a pattern can represent efficiency and productivity, since it gives a tested solution for some commonly known problems. Besides, the use of architectural patterns can also help the software management at the early stages planning for the software and to estimate its costs.

Software Architecture Patterns - Overview

The need of software metrics and measurement are related to: 1. Define quality for the current product or process; 2. Anticipate future qualities for the current product or process; 3. Enhance the quality of a product or process; 4. Regulate the state of the project in relation to budget and schedule.

Software Measurement and Metrics

Git is a version control system used for: handling the source code history of projects, tracking changes made to files, handling small and large projects with speed and efficiency, to collaborate with other developers on different projects.

Advanced GIT

GitLab is a public available service that functions as remote repository to codes and also offers many other features related with development. It was founded by Dmitriy Zaporozhets and Valery Sizov in 2011, under MIT licence.

GitLab Platform

Durante o ciclo de vida de um sistema ou de um software, indo desde do seu design, passando pelo desenvolvimento, testes, implementação e manutenção, ocorrem inúmeras mudanças e uma grande quantidade de código é constituído. Nesse sentido, facilitar o trabalho de reunir todo esse material e de permitir gerir as suas mudanças e versões faz parte de uma prática genérica chamada de Gestão de Configuração.

Gestão de Configuração

Infrastructure as a code (IaC) is the managing and provisioning of automated infrastructure from coding that also helps with the configuration, the documentation and the versioning all the software structure involved.

Infrastructure as Code - (IaC)

This article brings an extensive view about many points of the DevOps practices, its architecture and its workflow. It also brings the principles, the tools and its workflows in terms of the pipelines for integration (CI) and for deployment (CD) that makes this practice so important for continously improvement.

Dev-Ops - Architecture

This article brings a overview about the DevOps culture and how it promotes the development and operation process to work closer and in synchrony. The name DevOps is a combination of two words, that is Development and Operations and it is a important practice for continously improvement in essential areas of TI, just as software developers, quality assurance (QA) and system administrators.

Dev-Ops - Overview

DevSecOps is short for Development, Security and Operations, and it aims for the automation of security at every phase of software development lifecycle, from the planning and design through testing, deployment and software delivery.

Dev-Sec-Ops - Overview

The the Capability Mature Model Integration or CMMI is a sucessor of the CMM, in the sense that it aims to incorporate all the individual disciplines for the development of software and integrate them all together. In a broader spectrum it aims for optimizing development processes, to allows its continous improvement, enhance the organization culture, decrease risks, etc.

Capability Maturity Model Integration (CMMI)

Kanban is a management method for teams and organizations that works through visualization to facilitate the identification and the elimination of bottlenecks and improve development/operation and quality.

Kanban Method and Practices

Software Quality is traditionaly presented  in terms of of fitness of purpose, meaning that the software would do exactly what the users expect from it, though modern software demands also other sets of properties to better describes software quality.

Software Quality - Overview

The Lean Software Development is an Agile Framework that it is used to streamline and optimize the software development process.

Lean Software Development (LSD)

Scrum is a lightweight framework that helps peoples, teams and organizations generate value through adaptive solutions for complex problems.

Scrum Method and Practices

This model does not seem to follow the alignment of the classic Waterfall Model, in the Big Bang Model there is no specific phase related with the Requirements and its goals seems to be more loose or are directed by some pratical purpose.

Big Bang Model - Software Life Cycle

In the Iterative Model the software requirements are divided into smaller groups to be tackled in sequential cycles or iterations, where each iteration presents a version of the software until all the requirements are met and the whole system is finished.

Iterative Model - Software Life Cycle

The Prototype Model is a methodology that makes effort to bring the customer closer to the developer team by means of implementing some kind of toy or mockup feature that should help the client to have a general visualization of the final product.

Prototype - Software Life Cycle

The name Agile Model is related to a swift or versatile process, and as a methodology this model is based at the iterative model of development. The iterations are of a short length, about one to four weeks, and the entire project is divided into smaller parts, what in turn minimize the risks of the project.

Agile Model - Software Life Cycle

The Incremental Model of software life cycle is a method to engineer software that breaks or divide the requirements for a complex product into multiple modules or cycles that are progressively built adding complexit to the system until it reaches its final form.

Incremental Life Cycle Model

The RAD model is a linear sequential development process that emphasizes on concise cycles that was first proposed by IBM in 1980.

RAD - Rapid Application Develoment Model

The Spiral Model is a very important life cycle model because it provides support for **Risk Handling**. This life cycle model was initially proposed by boehm as a evolutionary process that couples the iterative feature of prototyping with the more controlled and systematic approach of the linear sequential model.

The Spiral Life Cycle Model

The V-Model of software life cycle development receives its name from the fact that the production process runs in parallel implementing both a Development Cycle and a Testing Cycle, side by side.

V-Model - Software Life Cycle Models

The Waterfall Model is the classic development life cycle method, and even though it is not in many use today, it is the basis case for all the other life cycle models.

Waterfall Model

The requirements engineering refers to the process of defining, documenting, and maintaining requirements for a software development project.

Requirement Engineering

Introductory ideas about software engineering, presenting the different life cycles of software and the main methodology of development.

Software Engineering and the Life Cycle of  the Software

O artigo trata como novos usuários podem criar uma conta, implementar um código de acompanhamento e configurar filtros de dados. Navegar na interface e nos relatórios e configurar painéis e atalhos. O curso também ensina a analisar relatórios básicos.

Google Analytics básico

This article walks through some issues about the improvement of Web Vitals in a webpage or web app, and focuses specially in the framework Next-JS. With SEO, best pratices, the monitoring the Core Web Vitals and related tools, it is show a wider ranges of performance aspects.

Improving Core Web Vitals

To treat about web performance is both a subject to a better experience on the web and a prerequisite for results to be cast by search engines.

Web Performance & Core Web Vitals

Understanding what is a SEO process and how to improve the site ranking in the search engines results.

What is SEO

According to the site from Reactjs.org, a high order component, or HOC, is a pattern used for reuse components logics across many ordinaire components.

High Order Components

Soon a new presentation just around the block.

Next Attraction

Melhorando a Performance dos bancos de dados NoSQL- Um Estudo de Caso.

Plano de Consultas em Bancos de Dados NoSQL

Otimização de bancos de dados na obra de Abraham Silberschatz.

Software Development articles

Technical papers and general news about Software Developement and Best Pratices.