• Releases

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

• Documentation

  • Project Website
  • Getting Started
  • Developer Guide

• Related Projects

  • misk-web
  • wisp: wisp is now a part of Misk

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: 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.