Debounced updatable #261
Debounced updatable #261
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| @@ -30,11 +50,14 @@ def self.enable_cable_ready_updates(*options) | |||
| options = options.extract_options! | |||
| options = { | |||
| on: [:create, :update, :destroy], | |||
| if: -> { true } | |||
| if: -> { true }, | |||
| debounce: 0.seconds | |||
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I wonder if it would make sense to have the default provide some degree of protection. Perhaps 100 milliseconds?
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well I switch on the debounce time in broadcast_updates to gracefully allow the default behavior. But sure, why not!
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actually I just noticed that this breaks all the tests, so we'd have to specify debounce: 0 everywhere. I'd recommend merging this PR and then introducing this in a separate one to keep things readable
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Also note that this doesn't yet factor in the case of |
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Will association support land in a separate PR? |
I thought it would be wiser to split it, yes |
julianrubisch
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Enhancement
Description
One of the big downsides of using
CableReady::Updatablein the wild is that it can lead to a lot of noise on the ActionCable connection. This is because every change on a model that enables updates leads to a ping being sent over ActionCable due to the usage of ActiveRecord callbacks.This PR introduces a
debounce:option that takes anActiveSupport::Durationargument that will only send out one ping for this model per debounce period.It makes use of a simple internal per-process
MemoryDebounceAdapter, which is just a thin synchronized layer around aHash.Preparations are made, however, to override this adapter using a
CableReady::Updatable.debounce_adaptermattr_accessor, which can be overridden in an initializer. This should make it possible to devise other adapters (for example based on DRb or Layered Caching) in the future.Checklist