Joe Karlsson

Selecting the right application database can be a challenge for developers, especially so when you need a database for building real-time applications.

Data engineers are grappling with surging data volumes while stakeholders increasingly demand real-time decision-making and user-facing features powered by data.

Financial fraud is a growing concern in our increasingly digital world.

Can you imagine shipping a new user-facing dashboard only to have your users met with a visualization that takes several seconds or even minutes to load?

Sick of manually wrestling with Google Sheets like it’s an Excel spreadsheet from 2005?

Imagine you’re building banking software, and you’ve been asked to figure out one of the most fundamental tasks in fintech: determining the current balance of every customer in your system....

How I set up custom domain names on my internal network using Pi-Hole for DNS and Nginx Proxy Manager for traffic control and SSL - no public domain registration needed.

I built my first Homelab server for under $200 using a used Lenovo ThinkServer from Facebook Marketplace and Proxmox.

Adapting to Techpocalypse - Remember when we thought 2020 was a wild ride?

As a developer advocate, I often ponder DevRel’s role in catching bugs and tricky issues before they escalate.

‘Hello nerds!

You might not have thought much about using your technical skills to create physical objects.

Key-value stores are perhaps one of the most popular databases on the market today - and with good reason!

Databases are frequently not included when transforming an application and engineering culture toward a DevOps, or continuous deployment engineering organization.

Are you overwhelmed by the sheer amount of databases on the market today, and not sure where to start?

Do you need to get a basic SingleStore application setup quickly using Node.js?

Are you looking for the fastest possible way to get a new SingleStore Cluster up and running while testing out sample datasets to experiment with and use?

Have you ever needed to set a machine learning model on your data before?

In this post, I explain the differences between database sharding vs. partitioning and explore when to use each - or even to combine them for data-intensive applications.

Okay, so you’ve set up a simple MongoDB Atlas Online Archive, and now you might be wondering, “What’s next?”

Have you ever worked on a MongoDB project and needed to seed your database with fake data in order to provide initial values for lookups, demo purposes, proof of concepts, etc.?

Have you ever needed to make queries across databases, clusters, data centers, or even mix it with data stored in an AWS S3 blob?

Let’s face it: Your data can get stale and old quickly.

Let’s be honest: Many devs coming to MongoDB are joining the community with a strong background in SQL.

Have you ever had to develop an application that stored sensitive data, like credit card numbers or social security numbers?

Are you new to data structures and algorithms?

To make developers more productive when working with MongoDB, we built MongoDB for Visual Studio Code, an extension that allows you to quickly connect to MongoDB and MongoDB Atlas and work with your...

My favorite things in life are cats, computers, and crappy ideas, so I decided to combine all three and explore what was possible with JavaScript by creating a brand-new Internet of Things (Internet...

Thanks for coming to my talk, Save The World And Money With MongoDB Atlas Data Lake.

First, thank you so much for coming to my keynote, The Art of Computer Science.

Thanks for coming to my talk, Bechdel.io - How We Used JavaScript To Help Make Film More Inclusive.

The question I most frequently get from developers is how to pass a coding interview.

Thanks for coming to my talk, A Gentle Introduction to Building Serverless Apps.

Thanks for coming to my talk, MongoDB Schema Design Best Practices.

Thanks for coming to my talk, From SQL to NoSQL: A Gentle Introduction For Devs.

Thanks for coming to my talk, Building Your First GraphQL Client in JS.

Thanks for coming to my talk, An Introduction To IoT (Internet of Toilets 🚽); Or How I Built an IoT Kitty Litter Box Using JavaScript, and here you will find all the resources discussed during the...

Every couple of years, I like to compile a list of my 50 all-time favorite records.

Have you ever wanted to build a Spotify player for your app or website?

Are you interested in learning how to build a React and MongoDB App?

Have always wanted to see what communism looks like firsthand or try an authentic Cuban cigar?

It’s not that often that I go to a conference or watch a talk on YouTube that truly changes the way I think about programming or software development.

Okay, we all know that React was built with performance in mind, but when is React slow?

Have you ever started a project and thought to yourself, “When can I call this done?”

So, you want to learn how to code?

I Ran My First Hackathon, and So Can You!

Thanks again to Burt Lum and Ryan Ozawa for having me and my buddy Ray on their radio show, Bytemark’s Cafe, to talk about the Stupid Shit and Terrible Ideas That No One in Hawaii Needs “Hackathon”....

After reading High-Performance Browser Networking by Ilya Grigorik, I was inspired to implement all of the client-server communication techniques outlined in his book in Node and JavaScript.

The Bechdel Test Script Parser was a collaborative digital humanities project between myself and my sister, Laurel Karlsson.

This itinerary contains the list of spots I would bring friends and family one week in Oahu.