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 Modules and Layers.

Study notes of serveral videos.

This part covers the Overview Document of ZIO and the video of A Tour of ZIO.