Posts

Scala is all about type-safety and making the compiler work for you. But what if we need to use SQL which is not a part of Scala? The compiler is not able to validate and type check raw queries. The solution for that problem is Domain Specific Language (DSL). We already have Slick that provides DSL for SQL and allows to work with a database just like with Scala collections.

However, Quill is going even further and supports compile-time query generation and validation. In this post I take a closer look at Quill and show an example application. Read more

At ScalaC we’ve recently started adopting Slick 3.0. If you haven’t tried it yet, hopefully these notes will make the process go smoother. Read more

Adventure begins

Recently me and a few of my colleagues from ScalaC worked on an integration project which aim was to provide an interface between a machine learning engine and its clients via a Spray-based HTTP server and (internally) a persistence layer. As our work meant to be just a part of a larger system we did not have much say in how the data should be persisted or where – MySQL in this case. It was however up to us to decide how we would access the data.

Having had a lot of positive experience with Typesafe’s technologies we immediately turned to Slick. It’s also worth mentioning that one of the expectations was to achieve a reasonable request rate with minimal scaling as our client was a startup with limited funds. Read more