Izumi (jp. 泉水, spring) is an ecosystem of independent libraries and frameworks allowing you to significantly increase productivity of your Scala development.

including the following components:

1. distage – Compile-time safe, transparent and debuggable multi-modal Dependency Injection framework for pure FP Scala,
2. distage-testkit – Hyper-pragmatic pure FP Test framework. Shares heavy resources globally across all test suites; lets you easily swap implementations of component; uses your effect type for parallelism.
3. distage-framework-docker – A distage extension for using docker containers in tests or for local application runs, comes with example Postgres, Cassandra, Kafka & DynamoDB containers.
4. LogStage – Automatic structural logs from Scala string interpolations,
5. BIO - A typeclass hierarchy for tagless final style with Bifunctor effect types. Focused on ergonomics and ease of use with zero boilerplate.
6. izumi-reflect (moved to zio/izumi-reflect) - Portable, lightweight and kind-polymorphic alternative to scala-reflect's Typetag for Scala, Scala.js, Scala Native and Scala 3
7. IdeaLingua (moved to 7mind/idealingua-v1) – API Definition, Data Modeling and RPC language, optimized for fast prototyping – like gRPC or Swagger, but with a human face. Generates RPC servers and clients for Go, TypeScript, C# and Scala,
8. Opinionated SBT plugins (moved to 7mind/sbtgen) – Reduces verbosity of SBT builds and introduces new features – inter-project shared test scopes and BOM plugins (from Maven)
9. Percept-Plan-Execute-Repeat (PPER) – A pattern that enables modeling very complex domains and orchestrate deadly complex processes a lot easier than you're used to.

• Documentation
• Scaladoc

Example projects:

• DIStage Example Project
• Idealingua Example Project with TypeScript and Scala

Support Chats:

• Izumi User Group [RU] on Telegram
• Izumi User Group [EN] on Telegram
• Izumi on Gitter
• Discussions on Github

Videos:

• FScala 2023: Izumi Framework: Reinvent Your Productivity With Modern Pure Functional Scala
• Izumi 1.0: Your Next Scala Stack
• Scala, Functional Programming and Team Productivity
• Hyper-pragmatic Pure FP Testing with distage-testkit
• Livecoding: DIStage & Bifunctor Tagless Final
• DevInsideYou — Tagless Final with BIO
• Source Talks — Pragmatic Pure FP approach to application design and testing with distage
• (Talk + Livecoding) Izumi Framework: reinvent your productivity with modern pure functional Scala

Slides:

• Izumi 1.0: Your Next Scala Stack
• Scala, Functional Programming and Team Productivity
• Hyper-pragmatic Pure FP Testing with distage-testkit
• distage: Staged Dependency Injection
• LogStage: Zero-cost Structured Logging
• More slides

We aim to provide tools that:

1. Boost productivity and reduce code bloat
2. Are as non-invasive as possible
3. Are introspectable
4. Are better than anything else out there :3

We are looking for early adopters, contributors and sponsors.

This project is currently a work in progress.

In the future we are going to (or may) implement more tools based on PPER approach:

1. Best in the world build system
2. Best in the world cluster orchestration tool
3. Best in the world load testing/macro-benchmark tool

• d4s - "Dynamo DB Database done Scala way". A library that allows accessing the DynamoDB in a purely-functional way.

1. Chibi Izumi - a basic re-implementation of distage-core for Python.
2. DICS - Dependency Injection for C#, an advanced re-implementation of distage-core for C# based on Roslyn Analyzers, with extensive Unity support. To be released.

• Run ./sbtgen.sc to generate a JVM-only sbt project, run ./sbtgen.sc --js to generate a JVM+JS sbt crossproject

See:

• Build notes
• Project flow

Are you using Izumi? Please consider opening a pull request to list your organization here:

Tinkoff
Raiffeisen Bank Russia
Tele2 Russia
Evo.Pay
Glidewell.io
PITS Global Data Recovery Services