Reduce latency of App Platform (app and chart CR events)

cokiengchiara commented 3 years ago

User Story

As an App Developer, I want app configuration changes to be applied faster, so that we can iterate faster.
As an oncaller, I want app configuration changes to be applied faster, so that I can roll out changes faster during incidents (where every second is precious, e.g. during flash sales).

Note: App Developer applies to both customers and GS developers.

Details, Background

There are two main factors that delay the application of configuration changes.

1. App and Chart CR design

The App Platform design involves 2 CRDs (app and chart) so we are less coupled to Helm in case we want to replace later. We use the standard resync periods of 5 mins.

2. Configmaps and Secrets not watched by app-operator

Again, there can be a delay of up to 5 mins. This means the total time can be up to 10 mins.

Milestone 1

[x] https://github.com/giantswarm/giantswarm/issues/13196 Trigger chart CR update when linked configmap or secret is updated

Later / TBD

[x] https://github.com/giantswarm/giantswarm/issues/13201 Trigger updating app CR status when chart CR status changes, to reduce latency of updating app CR status
[x] https://github.com/giantswarm/giantswarm/issues/13202 Add controllers to app-operator to watch user values configmaps and secrets

tomahawk28 commented 3 years ago

All subtasks are done. I'm closing this.

cokiengchiara commented 3 years ago

Not available in tenant clusters yet.

cokiengchiara commented 3 years ago

Let's include in releases.yaml https://intranet.giantswarm.io/docs/product/releases/requesting-changes-in-next-platform-release/

giantswarm / roadmap