Redis provides a number of methods one can use to migrate data from one instance to another, like replication and snapshotting. However, migrations can get complicated when you're moving data to a Redis instance manag...

Kubernetes Ingresses offer you a flexible way of routing traffic from beyond your cluster to internal Kubernetes Services. Helm https://helm.sh/ is a package manager for managing Kubernetes. In this guide, you'll set ...

A comic that explains and contrasts the imperative management vs. the declarative management of Kubernetes objects.

InSpec is an open-source auditing and automated testing framework used to describe and test for regulatory concerns, recommendations, or requirements. It is designed to be human-readable and platform-agnostic. In this...

Using a configuration management tool such as Ansible to acquire a certificate makes this task completely automatic and reproducible. In this tutorial, you'll write an Ansible playbook to acquire a Let's Encrypt certi...

In this tutorial, you will use Certbot to set up a TLS/SSL certificate from Let’s Encrypt on a FreeBSD 12.0 server running Apache as a web server. Additionally, you will automate the certificate renewal process using ...

In this tutorial you'll explore various ways to use the flag package to build different kinds of command-line utilities. You'll use a flag to control program output, introduce positional arguments where you mix flags ...

In Go, distributing or deploying your application requires you to build your code into a shareable binary executable. To do this, you can use the Go toolchain to build and install your program. In this tutorial, you w...

Data persistence and file storage represent two of the biggest challenges when horizontally scaling web applications. This is mainly due to the fact that it is hard to maintain consistency of variable data between mul...

In this article, we will learn how to compose custom types that have common behaviors, which will allow us to reuse our code. You'll also learn how to implement interfaces for your own custom types that will satisfy i...

If you are developing a Ruby on Rails application, you may be interested in adding styles to your project to facilitate user engagement. Bootstrap is an HTML, CSS, and JavaScript framework designed to simplify the pro...

Methods are Go functions that operate on instances of a specific type. Methods allow you to communicate not only what the data is, but also how that data should be used. Methods are the core concept that makes Go inte...

Struct tags are small pieces of metadata attached to fields of a struct that provide instructions to other Go code that works with the struct. When you read information from systems such as databases, or APIs, you can...

Pagination is the concept of constraining the number of returned rows in a recordset into separate, orderly pages to allow easy navigation between them, so when there is a large dataset you can configure your paginati...

In this tutorial, we will cover setting up a production-ready Node.js environment that is composed of two CentOS 7 servers; one server will run Node.js applications managed by PM2, while the other will provide users w...

Interested in Django but not sure where to start with Docker? This tutorial will walk you through first steps: modifying a sample Django application to work in a container-based environment, and building a container i...

In this tutorial, you will install and set up a PageKite front-end service on a server running Debian 9. You will also set up two more Debian 9 servers to simulate a local and a remote environment. When you're finishe...

Structs allow storing data from several variables in a single entity with one name. They allow Go developers to describe the world in which a Go program operates. Instead of reasoning about strings describing a Street...

In this tutorial, you will use the Go flag -ldflags to change the value of variables at build time and introduce your own dynamic information into a binary, using a sample application that prints version information t...