Nginx has become one of the most flexible and powerful web server solutions available. However, in terms of design, it is first and foremost a proxy server. This focus means that Nginx is very performant when working to handle requests with other servers. Nginx can proxy…
After setting up Puppet in an agent/master configuration, you may need some help writing Puppet manifests and modules. In order to use Puppet effectively, you must understand how manifests and modules are constructed. This tutorial covers Puppet code basics, and will show you how to construct manifests and modules that will help you get started with using Puppet to manage your server environment.
There are many Linux distributions available, each with their own maintainers, some backed by commercial providers and some not. For the purpose of running a cloud server, there are a few you should be aware of.
IP addresses, networks, submasks, and CIDR notation can be difficult concepts to understand. In this guide, we will cover some of the ideas behind how these systems work together to allow computers to communicate over the internet.
DNS, or the Domain Name System, is an integral part of how the internet functions today. However, the way that DNS works is often quite mysterious for new administrators. In this guide, we will discuss some of the common terminology and concepts that are involved in DNS configuration.
The iptables firewall is a good way to protect your server from unwanted traffic from the internet. In this guide, we’ll discuss the general idea behind the iptables firewall and how rules interact with each other.
In this article, we’ll talk about the server side of web performance optimization: how fast can your server respond to your user’s requests? We’ll review the general landscape of load testing, step through a plan to find your server’s maximum practical response rate, and discuss some options for open source load testing software.
Projetar e executar aplicações com escalabilidade, portabilidade e robustez pode ser um desafio, especialmente à medida que a complexidade do sistema aumenta. A arquitetura de uma aplicação ou sistema impacta significativamente em como ele deve ser executado, o que ele espera de…
Load balancing is a key component of highly-available infrastructures commonly used to improve the performance and reliability of web sites, applications, databases and other services by distributing the workload across multiple servers. A web infrastructure with no load…
Les systèmes de gestion des bases de données (SGDB ou DBMS en anglais) sont des programmes informatiques qui permettent aux utilisateurs d’interagir avec une base de données. Un SGDB permet aux utilisateurs de contrôler l’accès à une base de données, d’écrire des données,…
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