Automation, AWS Lambda

AWS Lambda Size: PIL+TF+Keras+Numpy?

At Wehkamp we’ve been using machine learning for a while now. We’re training models in Databricks (Spark) and Keras. This produces a Keras file that we use to make the actual predictions. Training is one thing, but getting them to production is quite another!

The main problem we’ve faced was that it was too big to actually fit into a lambda. This blogs shows how we’ve dealt with that problem.

.NET, Redis

Building a high performing last viewed list using Redis

We live in a day and age in which we can choose a data-store that matches the characteristics of our apps and (micro) services. Lately we’ve been looking into Redis as a high performing store for last viewed items. In this blog I’ll look show how to create a POC with the redis-cli and then implement it using .NET Core. We’ll be using the sorted set structure.

Automation, PowerShell, Windows

PowerShell snippet: check if software is installed

Some deployment scripts need to check if certain required software is installed on a Windows Machine. You could check if the file is present at a certain location, but there is a better way to check if software is installed: the uninstall database in the Windows Registry. PowerShell makes it really easy to query the registry!


Swap alt and cmd in Windows 10 (MacBook Pro)

As a .Net Developer, I need my MacBook Pro to run Windows. I did so using Boot Camp (which was okay, but my mouse wouldn’t scroll) In Windows I use alt+tab a lot. But the cmd and alt keys are not in the right place (from a Windows keyboard perspective). I use the Windows key a lot too (like Windows+r for run). So let’s swap those keys!


A small batch file to compile and execute… Java

Entering a javac (compile) and a java (execution) command seems tedious, so I wondered if those could be scripted into a good old .bat file.

I’ve created a file called yall.bat to help with the process. It has been a while since I’ve been playing around with batch files. I’ve seen my father do it… it still looks like a dark – and ancient – art to me.

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