Tutorials

Introduction> Introduction # MySQL query profiling is a useful technique when trying to analyze the overall performance of a database driven application. When developing a mid to large size application, there tends to be hundreds of queries distributed throughout a large code base and potentially numerous queries ran against the database per second.

Status: Deprecated> Status: Deprecated # This article is deprecated and no longer maintained. See Instead> See Instead # This article may still be useful as a reference, but may not work or follow best practices.

Introduction> Introduction # Relational database management systems are a key component of many web sites and applications. They provide a structured way to store, organize, and access information. PostgreSQL, or Postgres, is a relational database management system that provides an implementation of the SQL querying language.

Introduction> Introduction # TLS, or transport layer security, and its predecessor SSL, secure sockets layer, are secure protocols created in order to place normal traffic in a protected, encrypted wrapper.

[*]Introduction[*] Java and the JVM (Java’s virtual machine) are required for many kinds of software, including Tomcat, Jetty, Glassfish, Cassandra and Jenkins. In this guide, you will install various versions of the Java Runtime Environment (JRE) and the Java Developer Kit (JDK) using apt.

Introduction> Introduction # As your application or website grows, you may come to the point where you’ve outgrown your current setup. If you are currently hosting your web server and database backend on the same VPS, a good idea may be to separate these two functions so that each can operate and grow on its own machine.

Introduction> Introduction # Redis is an in-memory, NoSQL, key-value cache and store that can also be persisted to disk. This tutorial shows how to implement basic security for a Redis server.

Introduction> Introduction # Ruby on Rails is an extremely popular open-source web framework that provides a great way to write web applications with Ruby. This tutorial will show you how to install Ruby on Rails on Ubuntu 14.

Introduction> Introduction # FreeBSD is a free and open source Unix-like operating system and a popular server platform. While FreeBSD and other BSD-based systems share much in common with systems like Linux, there are points where these two families diverge in important ways.

Introduction> Introduction # WordPress is the most popular CMS (content management system) on the internet. It allows you to easily set up flexible blogs and websites on top of a MySQL backend with PHP processing.

Introduction> Introduction # When using the Nginx web server, server blocks (similar to virtual hosts in Apache) can be used to encapsulate configuration details and host more than one domain on a single server.

Introduction> Introduction # Mesosphere is a system that combines a number of components to effectively manage server clustering and highly available deployments on top of an existing operating system layer. Unlike systems like CoreOS, Mesosphere is not a specialized operating system and is instead a set of packages.

Introduction> Introduction # In this tutorial, you will create a countdown timer using React hooks to update state and manage side effects in a React component. With React hooks, you can create cleaner code, reusable logic between components, and update state without classes.

Introduction> Introduction # A Linux server, like any modern computer, runs multiple applications. These are referred to and managed as individual processes. While Linux will handle the low-level, behind-the-scenes management in a process’s life-cycle – i.

Introduction> Introduction # Something that can discourage Arch Linux newcomers is the lack of official packages downloadable with its standard package manager pacman. In this article, I hope to explain why Arch has chosen to work this way, as well as how you can easily acquire just about any package in it.

Introduction> Introduction # Databases grow over time, sometimes outgrowing the space on the file system. You can also run into I/O contention when they’re located on the same partition as the rest of the operating system.

Status: Deprecated> Status: Deprecated # This article covers a version of Ubuntu that is no longer supported. If you are currently operate a server running Ubuntu 12.04, we highly recommend upgrading or migrating to a supported version of Ubuntu:

Introduction> Introduction # HAProxy, which stands for High Availability Proxy, is a popular open source software TCP/HTTP Load Balancer and proxying solution which can be run on Linux, macOS, and FreeBSD.

Introduction> Introduction # An effective logging solution is crucial to the success of any application. In this guide we’ll focus on a logging package called Winston, an extremely versatile logging library and the most popular logging solution available for Node.

Introduction> Introduction # A virtual private network, or VPN, allows you to securely encrypt traffic as it travels through untrusted networks, such as those at the coffee shop, a conference, or an airport.