If you’re running a Swarm Mode cluster or even a single Docker engine, you’ll end up asking this question: How do I keep track of all that’s happening? The answer is “not easily.” You need a few things to have a complete overview of stuff like: Number and status of containers If, where, and when a container has been moved ...

An API doesn’t exist on its own. There are always two parties involved: The Client and the Server. In Rails, our apps are often the ones acting as the server, and we typically know how to troubleshoot the issues that inevitably arise. We can tail the logs to see what the incoming request looks like (the path, headers, params), how ...

There are very good reasons to use immutable objects in certain languages. In JavaScript, however, I’m still kind of…. meh. In this blog post, I plan to discuss my reasonings with the hope that I might spark discussion on the use of Immutable Objects in JavaScript. What Are Immutable Objects? The definition of mutable is “liable or subject to change ...

In this example we will learn about files and directories, we will also learn how to manipulate them with PHP. PHP allows you to work with files and directories stored on the web server. Files are persistent storage, they are stored on the hard drive and retain there data even after the computer is shut down. Directories are used to store files ...

AJAX is a technology that allows to establish asynchronous communication between the client and the server. That is, to allow a communication between the two points in the background. In this tutorial we will see how to use this technology, that involves JavaScript, which PHP in the server side. For this tutorial, we will use: Linux Mint (17.03) as Operating ...

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You already know how to use modules in Ruby, but are you abusing them? In this post, we’ll take a look at different ways to program with modules and why they may or may not be a great idea. Namespace Modules give you an easy way to namespace the rest of your code. For example, when you generate a new ...

Let’s take a look at using Codeship for Selenium and Headless Chrome testing, which is key for interacting with JavaScript features on your site. I also want to show you how to troubleshoot those rare moments when there’s an issue on the CI but not on your local build, by using Codeship’s SSH feature and Sauce Lab’s remote connections. You ...

In this example we will learn how to create HTML forms and how to handle data transmitted through them with PHP. HTML forms allows user’s send data to a server or website. If a website needs to collect a user name, age or date of birth it’s most likely going to use HTML forms. Login and registration systems for websites ...