krisleech/wisper

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

3331 stars · 154 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Wisper is a micro library that adds Publish-Subscribe (pub/sub) capabilities to plain Ruby objects. Objects including the Wisper::Publisher module can broadcast events to subscribed listeners, synchronously or asynchronously, without depending on Rails.

Use cases

• decouple business logic from external concerns in Ruby applications
• replace ActiveRecord callbacks and observers in Rails apps
• broadcast domain events from service objects
• subscribe listeners to object events at runtime
• publish events asynchronously in Ruby
• build hexagonal architecture in Ruby

When to choose

• you want lightweight pub/sub in Ruby without a message broker dependency
• you need to decouple service objects from side effects like notifications
• you want an alternative to ActiveRecord callbacks and observers
• you need runtime, context-based subscription of listeners

When to avoid

• you need durable, cross-process event delivery or a real message queue
• you are starting a greenfield app and prefer its successor libraries like WisperNext or Ma
• you need event sourcing with persistence and replay

Facets

library · maturity stable

middleware message-queue developer-tools backend web-development developer-tools ruby publish-subscribe event-bus decoupling hexagonal-architecture activerecord-callbacks-alternative

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