In a recent blog post we benchmarked WebSockets vs. regular old Http requests. Today we will go in a different direction on the network stack and benchmark WebSockets vs. regular old TCP sockets, all on the JVM.

Google’s word2vec project has created lots of interests in the text mining community. It’s a neural network language model that is “both supervised and unsupervised”. Unsupervised in the sense that you…

TL;DR: github.com/kifi/json-annotation. Also, sign up for Kifi.

Scala macros can be a great tool to reduce boilerplate code. For example, Play provides macros for easily creating Json serializers. Given a case class, it is…

One of Play!’s primary features is typed routing, which enables you to use strong types from your controllers. Buried in Play’s documentation (to the best of my knowledge, not linked anywhere) is an example of how to use your own types in routes…

Play Framework projects can build from several Play / sbt projects. A common use case is to keep code modular and composable. The official documentation shows how to combine Play projects, but does not specifically show how…

At FortyTwo, we rely on a main database hosted on RDS to store Kifi‘s critical user data. For instance, every keep (a user-page pair) is saved in there after the Kifi browser extension that sits on your computer sent…

Reactive LDA Library

In this post, we introduce a parallel LDA (Latent Dirichlet Allocation) library. It’s available on Github. The library is…

A few months ago, we explained how we used Guice with Play! for easy dependency injection, in order to make our code better organized and easier to test. More recently, we…