Three years ago a group of enthusiastic engineers gathered together during the Friday drinks. They wanted to interact more in the growing organization. Learn more from each other by sharing cool stories.
Spaces Summit 2019 - Part IIn this episode, we talk about Axle. Axle is our internal framework for building Java-based applications. Well actually as you will learn in this episode it is not a framework.
Axle the opinionated support for bol.com scrum teamsWith a growing microservice landscape, the importance of aggregation layers is also increasing. For some of these aggregation services we are trying Facebook’s GraphQL, with two of them now running on our production environment. We've found that one of the drawbacks in using GraphQL is maintenance on both domain models and GraphQL queries.
A developer friendly GraphQL clientIn many systems at bol. com the response speed of our systems is very important. This blog is about the data structures and algorithms we used to make a specific analysis step a lot faster: Finding the longest matching string prefix.
Finding the longest matching string prefix ... fastThe biggest e-commerce company in the Netherlands and Belgium, bol. com, set out on a 4 year journey to rethink and rebuild their entire ETL (Extract, Transform, Load) pipeline, that has been cooking up the data used by its search...
Using Elasticsearch as the Primary Data StoreLast June, Spaces Summit was organized by and for bol. com employees. At Techlab, we want to celebrate this event by highlighting two presentations every month.
Part 3: Talks Spaces Summit v2.0Last year the Measuring 2. 0 team at bol. com has started measuring user behavior on the bol.
How (not) to sink a data stream to files? Journeys from Kafka to Parquet.Ever since I’ve started working for a WebAnalytics company in 2005 I’ve been working on problems related to making sense of web data. One of the most difficult elements in this type of analysis is making sense of the user...
Making sense of the user agent stringWhen you build a service at bol. com your responsibility doesn’t end once the build is green. You’re actually supposed to run it (and keep it running) in production, too.
My baby was leaky and now it’s not