• Releases

  • See most recent public build
  • Changelog
  • API is subject to change

• Documentation

  • Project Website
  • Getting Started
  • Developer Guide

• Related

  • misk-web: a now deprecated React framework used for the Misk Admin Dashboard v1
  • wisp: some Misk artifacts that are published without use of the Guice Direct Injection library

Misk (Microservice Container in Kotlin) is an open source microservice container from Cash App. It allows you to quickly create a microservice in Kotlin or Java, and provides libraries for common concerns like serving endpoints, caching, queueing, persistence, distributed leasing and clustering. It also includes the Wisp library, which is a collection of Kotlin modules providing various features and utilities, including config, logging, feature flags and more.

It has been powering hundreds of microservices within Cash App since 2018.

• Server
  • Built on top of Jetty
  • HTTP/2 and gRPC support
  • Configurable through YAML
  • Service management through Guava
  • Web-based admin console
• Client
  • Configurable HTTP clients built on top of OkHttp and Retrofit
  • gRPC clients built on top of Wire
• Cloud integration
  • AWS: SQS, S3, DynamoDB
  • Google Cloud: Spanner
• Scheduled Jobs with cron syntax
• Persistence
  • ORM: SqlDelight, JOOQ, Hibernate
  • JDBC: Connection pooling through Hikari
• Cache: redis client
• Metrics:
  • Integration with prometheus
  • Built-in metrics for JVM performance, networking and connection pooling
• Testing framework with annotations
• Kotlin utilities with minimal dependencies: Wisp

Want to jump right into it? Check out our Getting Started Guide.

What to know more about each module, see Developer Guide.