Sequent
wisper
Sequent | wisper | |
---|---|---|
5 | 6 | |
535 | 3,230 | |
0.2% | - | |
8.8 | 1.5 | |
29 days ago | about 2 months ago | |
Ruby | Ruby | |
MIT License | MIT License |
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Sequent
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OOP vs. services for organizing business logic: is there a third way?
Sequent – CQRS and event sourcing
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Event Store with Rails
Co-author of the Sequent gem (https://www.sequent.io) here. Can confirm that it’s a great gem to build event sourced applications with (as long as you’re using PostgreSQL). It’s very battle tested as it has been extracted from/used in a web based accounting system that currently holds about 1 billion events in the event store.
- Accessing point in time data when data changes over time
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Using CQRS in a simple Phoenix API with Commanded
I have been curious about the concepts of event sourcing and CQRS for a while— obsessively reading books like Practical Microservices (Garofolo) and Architecture Patterns with Python (Percival, Gregory), along with documentation for libraries like Sequent (Ruby), Commanded (Elixir).
wisper
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Publish/Subscribe with Sidekiq
Wisper: A Ruby gem providing a decoupled communication layer between different parts of an application -> I personally dislike wisper. I used it in the past and dislike the way of defining subscribers in a global way. I wanted topics to be arbitrary and each class to define what to subscribe for itself.
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OOP vs. services for organizing business logic: is there a third way?
Wisper – the Publish-Subscribe design pattern
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Event Store with Rails
I haven't used it, but we're also considering it in our app for quite some time. Our main issue is mostly that our codebase is super coupled, especially some older code, and using events as a means of communication between different modules of the app can be nice way of decoupling things. I think this is the most common usecase, and for this you don't necessarily even need to persist the events, and also something like wisper might be useful https://github.com/krisleech/wisper.
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Rails Google Cloud PubSub options
Whisper (not updated since 2020)
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How to avoid if/else with different ramifications
I would use events. Every services broadcast its results and everything that needs to listen for them. It also great to decouple dependencies between services. I like the Wisper gem : https://github.com/krisleech/wisper
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"I'm the CTO of a Growing Rails Startup" Ask Me Anything
We follow the interactor pattern to store our business logic. So we mainly have skinny controllers, skinny models and then interactors. We also don't use ActiveRecord callbacks very much, we primarily use Wisper to broadcast events and then various domains can subscribe to the events they care about and respond accordingly.
What are some alternatives?
Rails Event Store - A Ruby implementation of an Event Store based on Active Record
SimpleCommand - A simple, standardized way to build and use Service Objects (aka Commands) in Ruby
Interactor - Interactor provides a common interface for performing complex user interactions.
Cells - View components for Ruby and Rails.
Rocketman - 🚀 Rocketman help build event-based/pub-sub code in Ruby
Clowne - A flexible gem for cloning models
Trailblazer - The advanced business logic framework for Ruby.
Light Service - Series of Actions with an emphasis on simplicity.
Responders - A set of Rails responders to dry up your application
Waterfall - A slice of functional programming to chain ruby services and blocks, thus providing a new approach to flow control. Make them flow!