I recently built a small F# web app which runs on AWS Lambda. In this post I look at some of the libraries, tooling, and tips which can help you build on the same platform. I used Giraffe (an F# layer on top of ASP.NET Core) as the web framework and DynamoDB as the database. AWS API Gateway receives the web request and hands it off to the Lambda for processing.
A local bar publishes their beer tap list in …
I recently got the AWS Developer Associate certification. Here are some tips and a copy of my study notes.
Read the AWS Exam Guide. It’s a 3 pager by AWS describing exactly what is in the test.
Purchase the Whizlabs Practice Exams. A few people had recommended these to me and I found the questions a good way to study. All questions have a detailed explanation of the correct answer and reasons why the other options weren’t correct. If you start the exam in ‘practice mode’ …
Domain Modeling Made Functional by Scott Wlaschin is a book which guides you through the design and implementation of an e-commerce ordering system. It’s a real world application with non-trivial business requirements. The project is implemented in F#, but any other language with a powerful type system which allows you to write in a functional paradigm could be used. Scott is author of the popular website fsharpforfunandprofit.com and also a highly regarded speaker in the F# community. …
This is a tutorial on using F# with Dapper to query a SQLite database on .NET Core. It uses the fsharp-dapper library written by Alex Troshkin. While this example uses SQLite, the general pattern could be used for any other SQL database. All code from this post is on Github and can be run locally.
At its core this pattern allows you to separate your SQL queries from your domain types. You write a small API layer …
I recently read Accelerate - Building and Scaling High Performing Technology Organizations. Here I give a brief overview of the book and share some thoughts I had while reading it.
The authors are looking to answer questions such as “Do technical practices and automation impact software delivery?” and “Is a Lean approach to product management an important aspect of software development and delivery?”. They’ve done this through several rounds of surveys to people …