Effective Quality Assurance poses a serious challenge with Agile teams. Agile’s characteristic fast pace means traditional QA approaches do not...
Kenneth J. Toley on April 11, 2018
To rapidly deliver software with quality it is important to equate “quality” with the value the team delivers to users....
Kenneth J. Toley on April 11, 2018
Data is extremely important to us at Lumosity – as custodians of the world’s largest cognitive training database, we feel...
Marc Bollinger on November 13, 2017
At Lumos Labs (maker of Lumosity), we operate a Rails 4.2 backend (I know, it feels like it is always...
Jay OConnor on June 14, 2017
Amazon’s ECS (EC2 Container Service) is a great way to manage and deploy docker containers. We at Lumos Labs...
Lumos Labs on January 23, 2017
Platforms like iOS and Android make it easy to tell which of your localization strings...
Cameron Dutro on August 2, 2016
Today, after a year of internal development and incubation, we are pleased to open source Aleph, an analytics platform for...
Andrew Xue on June 17, 2016
On July 17, we hosted a Tech Talk focused on internationalization in our San Francisco office. Internationalization has been a...
on July 28, 2015
While attempting to upgrade our local bundler version to 1.9.6, we ran across a few issues that others may...
on May 28, 2015
FeatureGuard is an open-source Ruby gem for feature-flagging that uses Redis as a key-value store. However, it can be...
Ashley Gau on April 30, 2015
Collaboration and learning are at the core of Lumosity’s company culture. To that end, we’ve launched a monthly Tech Talks...
on March 25, 2015
Have you ever cracked open a misbehaving gem in the hopes of tracking down a bug in your app? If...
Cameron Dutro on March 12, 2015
Approximately a year ago, we decided to switch away from using a third-party service for sending out emails to our...
Stephen Li on June 10, 2014
We at Lumosity love to improve. Personal and professional development are as important as the product we build each...
Carl Furrow on April 28, 2014
I recently had the pleasure of working on some exciting social features for Lumosity’s Family Plans. What better way...
Jack Weiss on March 12, 2014
Lumosity’s purchase pages rely on I18n to translate the various pieces across the numerous currencies and locales. This is ideal...
Zassmin Montes De Oca on February 27, 2014
Making sure your test suite runs quickly ensures that it will be run often. We at Lumos Labs (lumosity.com) have...
Carl Furrow on November 4, 2013
Communicating with your peers is an important part of engineering....
Chris Friedrich on April 25, 2013
In our last post, we talked about how we ensured the integrity of our data as we transitioned...
Anthony Zacharakis on March 28, 2013
As of mid-2012, we had been accepting payments on lumosity.com for almost five years,...
Anthony Zacharakis on February 4, 2013
For our first hackathon, a few of us decided to build a “crushing it” meter - basically a simple...
Eric Kustarz on March 29, 2012
Last fall, we took a look at our deploy process and how other companies were approaching the same problem.
The...
Eric Kustarz on February 4, 2012
If you’re running a Rails application in production and you’re still running plain old vanilla ruby 1.8.7 (the MRI or...
John Berry on October 12, 2011
Our MySQL database servers are the heart and soul of lumosity.com’s Rails stack. Memcached helps a ton with...
John Berry on September 14, 2011
After you have programmed for a while, you start to recognize good code from bad code. One of the things...
Eric Kustarz on June 30, 2011
Unnecessary downtime is bad. To allow for small, frequent deploys, we need to avoid downtime - no matter how short...
Eric Kustarz on June 16, 2011
