Java

How To: Building a Debouncer…in Java

A short while ago, we were building a distributed backend service where multiple instances of…

The Inheritance & HashSet Related Bug with Lombok

FUN FACT: Lombok is an Indonesian island east of Bali and west of Sumbawa…

Fast Gaussian-distributed Random Numbers

Recently, profiling showed me that most of the time in the microbenchmark I was running…

Implementing and Testing the Bulk Insert/Save Pattern in MongoDB

Here at Vena, we use MongoDB pretty heavily in our back end stack. We also are working on making automated testing a larger, more prevalent part of our culture. We’re not perfect at this, but, like everything, we have a…

When is a Set not a Set?

I come into work one morning, and I hear about a new customer bug. A data import failed, with this technical-looking error message:

Document size of 16990947 is larger than maximum of 16777216.

Is it Possible to Write Bug-Free Code? A Case for Thorough Specifications

When I started as a server developer at Vena in 2013, we didn’t have test-driven development. Sure, we designed our codebase to be testable by using dependency injection from the start, with the…