This is a study note of Mill: a new Scala/Java build tool. The motivation is to use the functional programming concept and good ideas from Bazel to make build easy.

This is a study note of the concept of FP based on 5-parts tutorial.

This is a study note of PostgreSQL 修炼之道.

This note is about functional effects including what is functional effect and how to compose different effects. It is based on the video: One Monad to Rule Them All.

This part covers the ZIO stream. It is based on the [ZIO stream doc] and two videos:Scalaz Stream: Rebirth and Modern Data Driven Applications with ZIO Streams.

This part covers the concurrent parts of ZIO including STM, fiber, queue, promise, and semaphore. It is based on the video Atomically {delete your actors}.

This part covers the ZIO module pattern. ZIO uses a module pattern that a layer depends on the layers imediately below it without knowing their interal implementations. A module consists a set of methods that addresses one oncern. ZIO uses modules to create different application layers depending on each other and allows flexible composition for testing and changing.