Digging into a MongoDB 3.6.20 concurrency bug

What to do when Mongo won’t return your calls

Sep 5, 2020

To 404 or not to 404?

In a REST API system, what should the DELETE API return if the resource being deleted doesn’t exist: “200 OK” or “404 Not Found”? It seems like a minor design choice, but we had a surprisingly contentious debate over the correct behaviour. There are arguments for both ways and they go deep…

Mustafa Haddara in Vena Engineering

May 15, 2020

How To: Building a Debouncer…in Java

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

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Albert Choi in Vena Engineering

Nov 7, 2019

5 numbered rectangles all adjacent to each other, arranged in 4 columns. In the first column, rectangle 1 is on top of rectangle 5 and have the same width. In the next 3 columns are rectangles 2, 3, and 4. The 4 columns all share the same top edge, but have varying heights, so they create 4 distinct bottom edges. Rectangle number 3 is the shortest, so the whole thing forms an overhang shape, kind of like a water faucet.

Solving Calibron 12, a very hard wooden block puzzle — Part 2

In this part, we solve the 2D geometry…

The Rookie Leader in Vena Engineering

Nov 5, 2019

The Inheritance & HashSet Related Bug with Lombok

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

Albert Choi in Vena Engineering

Sep 25, 2019

Solving Calibron 12, a very hard wooden block puzzle — Part 1

Sheri Soliman in Vena Engineering

Sep 23, 2019

How to use a React Component in a Backbone View

A big part of migrating over from one framework to another is the in-between state. It’s never as simple as flipping a switch — and you might find yourself, like us, juggling two different systems in the same application.