Caching / Offline

[noris666]

Hello 4 all ! ;-)

We have a lot of questions about caching:
#153
#150
#147

I think it's time to do the improvement package.
We need to determine which way we will implement data caching.
@Mokto @grsabreu @spencercarli I would like to know your opinion ?

@grsabreu @tofrookie @elie222 Just good to hear specific cases that need to be cached? What are the tasks in your applications ?

My case:
I have geolocations with data and need view information when i in offline. I don't have problems with scene routing and another technical aspects, i have one problem with caching data.

[elie222]

SubsManager is about caching subscriptions. It won't help you when you're offline or when you restart the application.
It will mean that if you go from screen A to screen B and then back again to A, you won't need to wait because you already subscribed. This also puts less load on the server a lot of the time.
And you SubsManager will automatically unsubscribe after a certain period of inactivity. It shouldn't be too difficult to implement. I've started working on it just copying the original code for now.

[noris666]

@elie222 ok, it is possible to share you implementation ? When you finish.

[elie222]

Yes definitely. Nothing to share just yet. But hopefully I can work on it
this week and get something working.

On 27 Oct 2016 1:41 p.m., "Georgiy Trokovets" notifications@github.com
wrote:

@elie222 https://github.com/elie222 ok, it is possible to share you
implementation ? When you finish.

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[tofrookie]

realm is ok :)

[fakenickels]

I think this is totally needed to have, I think we can create some abstraction of minimongo collections in AsyncStorage API and use minimongo-cache on API to listen to changes in database and sync them to AsyncStorage. And just reinit the data in minimongo when Meteor.connect gets called and the offline.
I can start this PR in the weekend if you agree with my idea!

[noris666]

@grsabreu hey bro it is good way finally !
About AsyncStorage API you look redux-persist ? Better way mix our future abstraction with Redux.

[fakenickels]

No @noris666. I think that as not everyone are using Redux in their applications I think it can be done without any big changes in current projects using react-native-meteor.
I think I can get to work on this idea when I get some free time.

[fakenickels]

"without any big changes" I mean to implement it as an internal feature of react-native-meteor

[noris666]

@grsabreu ok i understand what you means, but if you need help write to me email when you will be free. My mail: georgiy@adaptive.kz ;-) Good luck ;-)

[elie222]

If people want to try this out, here's my first attempt at converting the kadira subsmanager package to be used with RN: https://gist.github.com/elie222/516a716c0eb627039ed3fd7c3fe70983

And then you use it with something like:

const subsManager = new SubsManager({
  cacheLimit: 50,
  expireIn: 5,
})

subsManager.subscribe('posts') // this is instead of a Meteor.subscribe('posts')

[fakenickels]

@noris666 ok man! thank you