Categoria: Tropeçando

Categorias
Tropeçando

Tropeçando 14 – republish

GUI Database Design Tools - PostgreSQL Wiki

When Geeks Have Twins [PIC]

Lançado o Pl/PHP – iMasters

You can run PHP code inside PostgreSQL database.

12 senhas que nunca devem ser usadas - Geek List

Como é o dia de um “gerente de mídias sociais”? » CrisDias weblog

Blog do Márcio d'Ávila » Relatórios de mercado de TI 2010/2011

Create your Google Sitemap Online - XML Sitemaps Generator

The 15 Most Detrimental Social Media Mistakes You're Making

Blog do Márcio d'Ávila » Corrida dos navegadores rumo a HTML5 e CSS3

Validar é importante?! | Tableless - Desenvolvimento com Padrões Web

Categorias
Tropeçando

Tropeçando 8 – Republish

Evitando frustrações com sessões no PHP | Igor Escobar // Blog

PHP web applications can complement state in your applications very easily. Why is an illusion of state maintained by transporting one page and other information between one page and another losing it along the way. you've already lost potential productivity due to bizarre bugs or even security breaches because of these beauties. Here are four tips to save you time and secure your site. (in portuguese)

Javascript: Onunload VS Onbeforeunload | Igor Escobar // Blog

Fico pensando em um caso mais familiar possível para ilustrar a utilidade das duas funções e a melhor que me vem a cabeça é o Gmail. Já pensou em fazer algo parecido com o Gmail? Quando o usuário fechar a janela e alguma requisição estiver em processamento ele da um aviso sobre ela para evitar perda sem necessídade. Muita gente pensa que o evento utilizado para fazer tal proeza é o evento “onunload” mas não é. Existe uma pequena diferença entre os 2 eventos.

8 Regular Expressions You Should Know - Nettuts+

8 expressões regulares que você deve conhecer

The Web Application Security Consortium / The Web Security Glossary

The Web Security Glossary is an alphabetical index of terms and terminology relating to web application security. The purpose of the Glossary is to clarify the language used within the community.

The Novel 100: The 100 Greatest Novels of All Time

pdftk - the pdf toolkit

Dividindo dados em colunas - Mauro Pichiliani - SQL Server

Olá, pessoal. Hoje veremos uma solução que utilizei para manipular um conjunto de linhas e colunas no SQL Server com o objetivo de separá-las em dois conjuntos de colunas e facilitar a visualização dos dados, uma operação que geralmente não é fácil de ser realizada nos bancos de dados relacionais. Apesar de utilizar o SQL Server como exemplo, a técnica apresentada nesta coluna pode ser adaptada para outros bancos de dados que suportem a linguagem SQL sem problemas.

yfrog - Share your images/videos on Twitter!

Media Converter - the fastest free online audio and video converter

Vacation relaxation

Categorias
Tropeçando

Tropeçando 2 – Republish

dBpoweramp: CD Ripper & Audio Converter. Secure ripping to mp3, FLAC, m4a, Apple Lossless & WMA

CD extractor and multi converter from different audio and video codecs. Lots of advanced options for different formats.

A última de bluetooth - rede entre dois GNU/Linux

No trabalho você tem um pc ligado a internet via wifi, ethernet, ou similares. Você leva seu notebook que gostaria que estivesse conectado também, como fica? Você está no aeroporto com mais uma pessoa, os dois de notebook, só um modem 3G, como fica? E se vocês tiverem só um login da Vex, prestadora de acesso wifi, como fica? Você faz uma rede bluetooth entre os dois e compartilha a conexão, ora. (com exceção do primeiro, todos os comandos abaixo são como root)

Paje Online: Como Converter Vídeos no Linux?

Converter arquivos de vídeos e som no Linux, abrangendo os mais variados formatos e codecs, pode ser uma tarefa razoavelmente simples, bastando conhecer o programa certo. Nesta dica vamos apresentar o programa ffmpeg.

Comandos Básicos - Ubuntu Brasil

Muito embora o Linux possua diversas e ótimas interfaces gráfica (GUI\'s - Graphical User Interfaces) bastante amigáveis, dentre as quais destacamos o Gnome e KDE, como de resto todos os sistemas operacionais Unix, ainda requerem por vezes que façamos uso da linha de comando. O ambiente tradicional do Unix é o CLI (Command Line Interface), onde você digita os comandos para dizer ao computador o que ele deve fazer. Esse modo é extremamente poderoso e rápido, porém implica que você saiba para que serve cada comando e seus diversos parâmetros.

Instructables - Make, How To, and DIY

Aprenda a fazer tudo

PHP é à quinta-feira - Gerar uma password | Peopleware

Um conjunto de funções que os ajudarão a gerar uma password (ou qualquer outra string de caracteres aleatórios).

Color Hunter

crie e encontre paleta de cores a partir de imagens

Sua Língua » Arquivo » Não compre o novo VOLP! — 1ª parte

Blank/erase a DVD-RW | commandlinefu.com

Apagando um DVD-RW na linha de comando

Se eu soubesse que web 2.0 era isso… » CrisDias weblog

nth-child | Boas práticas de Desenvolvimento com Padrões Web

9 Interesting Facts To Know About a Website | Tools

Os top cinco erros não técnicos cometidos por desenvolvedores | Pacote201.com.br

Blog do Márcio d’Ávila » Cuidado - A fraude evoluiu

Dicas para evitar fraudes da internet.

Categorias
Tropeçando

Tropeçando 1 – Republish

Browsershots

What is Browsershots? Browsershots tests your website's compatability on different browsers by taking screenshots of your web pages rendered by real browsers on different operating systems. Free tier!

Reinstalando o GRUB

Alguém tentou reinstalar o outro Sistema Inoperacional e ele, genialmente, apagou a MBR e, conseqüentemente, a opção de escolha do GRUB? Agora dá para recuperar. Pelo Ubuntu (distribuição que uso e o do exemplo), é claro.

Ferramentas de segurança de rede

SecTools.Org: Top 125 Network Security Tools

O mundo de lunga: Conexão 3G - Solução para problema com DNS

Para resolver o problema de DNSs para conexões com modems Huawei, que sobrescreve o /etc/resolv.conf
50 exemplos de menu de navegação

Chartle.net - interactive charts online!

Ferramenta para montagem de gráfico para colocar em sites

Piwigo.org | Photo Gallery Software for the Web

Mais um exemplo de uma boa galeria de fotos

Resize your image online - It's easy, it's free!

Redimensionamento de imagens pela web

Filmow

"O Filmow foi criado para pessoas viciadas e apaixonadas por filmes. A principal ideia do Filmow é que você mostre aos seus amigos os filmes que já assistiu, comente sobre eles e dê sua opinião, na página do filme. Mas, para os que apenas gostam de filmes, o Filmow também é uma rede social onde é possível encontrar pessoas e amigos. No Filmow você fica sabendo quais filmes são lançados, os que estão no cinema e aqueles que já estão em DVD, para você assistir em casa." (http://filmow.com/sobre-o-filmow/)
Categorias
Tropeçando

Tropeçando 104

CASL

CASL (pronounced /ˈkæsəl/, like castle) is an isomorphic authorization JavaScript library which restricts what resources a given client is allowed to access. It's designed to be incrementally adoptable and can easily scale between a simple claim based and fully featured subject and attribute based authorization. It makes it easy to manage and share permissions across UI components, API services, and database queries.

The Danger of Dark Patterns (With Infographic)

Are manipulative design techniques undermining your product and leading users to make bad decisions? Here’s how to avoid dark patterns and create ethical products that enhance customer trust.

Dark patterns are a popular design topic but defining them can be difficult. That’s because they’ve become so prevalent that many have been adopted as design conventions. It’s crucial to understand these manipulative techniques in order to create ethical products that enhance customer trust.

DevOps: Shift Left to Reduce Failure

The term “shift left” refers to a practice in software development in which teams focus on quality, work on problem prevention instead of detection, and begin testing earlier than ever before. The goal is to increase quality, shorten long test cycles and reduce the possibility of unpleasant surprises at the end of the development cycle—or, worse, in production.

Does varchar(n) use less disk space than varchar() or text?

Tl;DR: No. This is a recurrent doubt due to a real difference in many other database systems. But not for PostgreSQL. Although documentation explains that internally, the core system has a wise way to split and store string data internally instead of simply reserving the total space, it is hard to believe. Here we have proof that there is no real difference.

How to ease the pains of testing legacy code?

Practically every programmer in their career struggled with working on a legacy project or one in which at least part of the job involved some kind of legacy code. I will show you some tips and tricks which will make writing unit tests for legacy applications much easier and less hurtful. Let’s go deep into testing legacy code!

Categorias
Tropeçando

Tropeçando 102

OWASP TOP 10

Each year, OWASP (the Open Web Application Security Project) publishes the top ten security vulnerabilities. It represents a broad consensus about the most critical security risks to web applications. Click through on the lessons below to learn more about how to protect against each security risk.

Your Product Owner Is Not Your Product Manager

Your Product Owner Is Not Your Product Manager. Product management has evolved to encompass numerous roles and responsibilities. Leaders looking to hire a product professional must consider what skills and knowledge their business needs demand.

While the market has evolved and will continue to evolve, there remains a need for both a product owner’s and a product manager’s skills and expertise. By considering the nature and scale of a project and understanding the skills and responsibilities associated with each of these distinct roles, leaders can ensure they hire the right person to help them develop and launch products successfully.

Insert-Only Tables and Autovacuum Issues Prior to PostgreSQL 13

If you have write-only tables (or heavy, heavy writes), you may need to check this post. Autovacuum has some issues before PostgreSQL 13, and you might have some great workarounds to use until upgrading your database version.

Enterprise CI/CD best practices

Free book with 23 best practices to apply to your CI/CD pipeline. Those best practices aim to help you design (or use as a checklist) a solid pipeline for your software.

A war story about COVID, cloud, and cost. And why serverless wins.

Nice story about serverless outcomes and potential. Based on COVID-19 pushing of infrastructure and computing services, billing is an important subject. The article has an excellent example of how both scale environment and low bill costs work together on a serverless tech stack.

Categorias
Tropeçando

Tropeçando 101

Minimal safe Bash script template

Bash scripts. Almost anyone needs to write one sooner or later. Almost no one says “yeah, I love writing them”. And that’s why almost everyone is putting low attention while writing them.

I won’t try to make you a Bash expert (since I’m not a one either), but I will show you a minimal template that will make your scripts safer. You don’t need to thank me, your future self will thank you.

Software Architecture Books

A comprehensive list of books on Software Architecture.

People in the software industry have long argued about a definition of architecture. Ralph Johnson famously defined software architecture as "the important stuff (whatever that is)." I, subjectively, followed his definition while deciding whether or not to include a specific book.

8 Tips to Master Asynchronous Communication

Great tips for using asynchronous communication in your favour. It’s the reason why some remote teams thrive while others grapple with anxiety and exhaustion.

POSTGRESQL: LIMIT VS FETCH FIRST ROWS … WITH TIES

Most people in the SQL and in the PostgreSQL community have used the LIMIT clause provided by many database engines. However, what many do not know is that LIMIT / OFFSET are off standard and are thus not portable. The proper way to handle LIMIT is basically to use SELECT … FETCH FIRST ROWS. However, there is more than meets the eye.

PostgreSQL Parallelism Do’s and Don’ts

PostgreSQL can apply parallel processing to speed up query performance. But the PostgreSQL query planner and internals are complex, making it a challenge to predict how parallel processing will affect different queries.

In this webinar, you’ll learn parallelism best practices to maximize your PostgreSQL query performance.

Categorias
Tropeçando

Tropeçando 100

How Exception to the Convention Does More Harm than Good

We have a project, and to make it easier, we use specific standards. E.g., we use spaces in every file.

But sometimes, we get to a situation when these standards are stressful. We don't understand them and just want them to bend over. How does our short-term need for pleasure affects long-term well-being of the project?

Splitting a Domain Across Multiple Bounded Contexts

How designing for business opportunities and the rate of change may give you better contexts.

Your Jest Tests are Leaking Memory

Jest is designed in a way that makes memory leaks likely if you’re not actively trying to squash them. For many test suites this isn’t a problem because even if tests leak memory, the tests don’t use enough memory to actually cause a crash. That is, until you add one more test and suddenly the suite comes apart. In this article, we’ll walk through why it’s so easy for Jest to leak memory, how to tell if your tests have a memory leak, and then how to debug and eliminate leaks in your tests. Even if you don’t use Jest, it’s still useful to understand the process in case you need to debug memory leaks in other javascript code.

How to handle flaky tests

Flaky tests are automated tests that are non-deterministic. That means they may pass or fail when executed against the same build artifact or deployed system.

If you’ve ever retried the execution of a failed test run in your CI/CD pipeline tool without any code or config changes in order to get a failing test case to pass, that’s an indicator that you have a flaky test case.

Why Serverless Teams Should Embrace Continuous Refactoring

Serverless adoption brings promises to many organizations! Promises of cost efficiency, engineering efficiency, and business efficiency. However, serverless is not a technology that, once successfully adopted, can be left unattended to rust.

The motivation to adopt serverless should never be to get the job done and never look back. If you adopt it with this attitude you will inevitably get into the legacy migration juggernaut that will haunt you much sooner than you anticipated.

Categorias
Tropeçando

Tropeçando 99

Diataxis

A SYSTEMATIC FRAMEWORK FOR TECHNICAL DOCUMENTATION AUTHORING.

The Diátaxis framework aims to solve the problem of structure in technical documentation. It adopts a systematic approach to understanding the needs of documentation users in their cycle of interaction with a product.

Conventional Commits

The Conventional Commits specification is a lightweight convention on top of commit messages. It provides an easy set of rules for creating an explicit commit history; which makes it easier to write automated tools on top of. This convention dovetails with SemVer, by describing the features, fixes, and breaking changes made in commit messages.

Awesome list

Awesome list of awesome technology related things

Postgres Observability

Graphical cheat-sheet for PostgreSQL Observability views and functions. You have a visual representation of the services touched by each observability tool, such as buffer, write-ahead logs, query plan, table storage, index information, etc.

An Introduction to PostgreSQL Performance Tuning and Optimization

This document provides an introduction to tuning PostgreSQL and EDB Postgres Advanced Server (EPAS), versions 10 through 13. The system used is the RHEL family of linux distributions, version 8. These are only general guidelines and actual tuning details will vary by workload, but they should provide a good starting point for the majority of deployments.

Categorias
Tropeçando

Tropeçando 98

(Operating Lambda: Debugging code – Part 1)[https://aws.amazon.com/blogs/compute/operating-lambda-debugging-code-part-1/]
(Operating Lambda: Debugging configurations – Part 2)[https://aws.amazon.com/blogs/compute/operating-lambda-debugging-configurations-part-2/]
(Operating Lambda: Debugging configurations – Part 3)[https://aws.amazon.com/blogs/compute/operating-lambda-debugging-integrations-part-3/

In the Operating Lambda series, I cover important topics for developers, architects, and systems administrators who are managing AWS Lambda-based applications. This three-part series discusses core debugging concepts for Lambda-based applications.

(Those pesky pull request reviews)[https://jessitron.com/2021/03/27/those-pesky-pull-request-reviews/]

They’re everywhere. In Slack: “hey, can I get a review on this?” In email: “Your review is requested!” In JIRA: “8 user stories In-Progress” (but code-complete). In your repository: 5 open pull requests. They’re slowing your delivery. They’re interrupting your developers.

How can we get people to review pull requests faster??

(Operating Lambda: Using CloudWatch Logs Insights)[https://aws.amazon.com/blogs/compute/operating-lambda-using-cloudwatch-logs-insights/]

In the Operating Lambda series, I cover important topics for developers, architects, and systems administrators who are managing AWS Lambda-based applications. This three-part series discusses monitoring and observability for Lambda-based applications and covers:

  • Using Amazon CloudWatch, CloudWatch Logs Insights, and AWS X-Ray to apply monitoring
    across services.
  • How existing monitoring concepts apply to Lambda-based applications.
  • Troubleshooting application issues in an example walkthrough.
    This post explains how to use CloudWatch Logs Insights in your serverless applications.

(CDK Lambda Deployment takes about a minute - how about sub second Function Code Deployment?)[https://aws-blog.de/2021/04/cdk-lambda-deployment-takes-about-a-minute-how-about-sub-second-function-code-deployment.html]

Creation of Lambda infrastructure with the CDK is really powerful. Updating the Function code is really slow. Here is a fix for that to get to a sub-second Lambda function deployment time.

(Best practices for developing cloud applications with AWS CDK)[https://aws.amazon.com/blogs/devops/best-practices-for-developing-cloud-applications-with-aws-cdk/]

In this post, we discuss strategies for organizing the development of complex cloud applications with large teams, using the AWS Cloud Development Kit (AWS CDK) as a central technology. AWS CDK allows developers and administrators to define their cloud applications using a familiar programming language, such as TypeScript, Python, Java, or C#. Applications are organized into stages, stacks, and constructs, which allows for modular design techniques in both runtime logic (such as AWS Lambda code or containerized services) and infrastructure components such as Amazon Simple Storage Service (Amazon S3) buckets, Amazon Relational Database Service (Amazon RDS) databases, and network infrastructure.