Interact with MongoDB in an AWS Lambda Function Using Go

If you’re a Go developer and you’re looking to go serverless, AWS Lambda is a solid choice that will get you up and running in no time. But what happens when you need to connect to your database? With serverless functions, also known as functions as a service (FaaS), you can never be sure about the uptime of your function or how it has chosen to scale automatically with demand. For this reason, concurrent connections to your database, which aren’t infinite, happen a little differently. In other words, we want to be efficient in how connections and interactions to the database are made.

In this tutorial we’ll see how to create a serverless function using the Go programming language and that function will connect to and query MongoDB Atlas in an efficient manner.

Listen for SIGINT and SIGTERM Events in a ZX Script

Have you ever needed to handle signal events within your ZX script? For example, what happens if you need to handle a graceful shutdown of your long-running or infinite-running script? Or what happens when the user forcefully stops the script?

These signal events are typically “SIGTERM”, “SIGINT”, and similar events. When using a script language like Bash, these events are most commonly captured with trap commands, but what happens when we’re using ZX?

In this tutorial we’ll explore how to use simple JavaScript to capture signal events in a modern ZX script.

Intro to SQL for the New Grad Developer

Ever since studying and working with databases 6 months ago, I’ve become fascinated with SQL and its relatively simple syntax. As a guide to the reader, I’ve gathered the essential criteria that employers expect you to know when applying for a database-related job.

In this blog, I will cover what SQL is, its different flavors and syntactical differences centered around an example query, the importance of EXPLAIN and SQL query runtime, and finally some example problems specifically in MySQL.

Build Your First .NET Core Application with MongoDB Atlas

So you’re a .NET Core developer or you’re trying to become one and you’d like to get a database included into the mix. MongoDB is a great choice and is quite easy to get started with for your .NET Core projects.

In this tutorial, we’re going to explore simple CRUD operations in a .NET Core application, something that will make you feel comfortable in no time!

Client-Side Field Level Encryption (CSFLE) in MongoDB with Golang

One of the many great things about MongoDB is how secure you can make your data in it. In addition to network and user-based rules, you have encryption of your data at rest, encryption over the wire, and now recently, client-side encryption known as client-side field level encryption (CSFLE).

So, what exactly is client-side field level encryption (CSFLE) and how do you use it?

With field level encryption, you can choose to encrypt certain fields within a document, client-side, while leaving other fields as plain text. This is particularly useful because when viewing a CSFLE document with the CLI, Compass, or directly within Altas, the encrypted fields will not be human readable. When they are not human readable, if the documents should get into the wrong hands, those fields will be useless to the malicious user. However, when using the MongoDB language drivers while using the same encryption keys, those fields can be decrypted and are queryable within the application.

In this quick start themed tutorial, we’re going to see how to use MongoDB field level encryption with the Go programming language (Golang). In particular, we’re going to be exploring automatic encryption rather than manual encryption.

Create a Stream Deck Plugin to Interact with Webhooks

I recently jumped on the hype train when it comes to streaming and picked up an Elgato Stream Deck. If you’re unfamiliar, these devices are essentially hotkey peripherals with LCD adjustable keys that allow you to quickly perform certain tasks. Could a keyboard shortcut get the job done? For a lot of tasks, definitely, but the Stream Deck software is where the magic comes in.

The Stream Deck software allows you to connect certain services or multi-stage shortcuts to a specific key, something a standard keyboard shortcut probably won’t do well. In addition, you’re able to design your own actions using simple JavaScript and HTML.

In this tutorial, we’re going to see how to create a Stream Deck action, one that sends HTTP requests to remote webhook services, using JavaScript.

The Polyglot Developer is Live on Twitch

I am pleased to announce that The Polyglot Developer is now a part of Twitch when it comes to streaming developer content live!

So what can you expect when it comes to the Twitch channel?

Think webinar, but without all the marketing nonsense that typically comes with them. Twitch streams are live, not at all formal, and an opportunity for the community to engage with the presenter as things happen on the stream. In other words, instead of leaving a comment on a blog post or YouTube video, you can ask questions and provide feedback as things happen, not only to the presenter, but to other members within The Polyglot Developer community.

So how do you get involved and what does this mean for the other education channels?