offline

[flutter-painter]

How does the SDK deal with offline devices ?
Does it check if the device is offline before sending events ?
Does it store them until a steady connexion is available ?

[goenning]

Not yet, but that's the plan for the SDK before it gets to 1.0. The current version will lose events if connectivity is not available.

I'm working on adding batch events on the backend, and once that's implemented, then the SDKs could store events in memory and batch send them on an interval until there's connectivity.

[flutter-painter]

Good news !
Out of curiosity from a humble Dart writer dealing with users allergic to connectivity ;
Will the SDK check device connectivity before attempting to send data ?
Coming from flutter I assumed implementation would be specific for each OS..

[goenning]

Our SDK doesn't explicitly check for that, not sure about the underlying OS though.

Why do you say they allergic to connectivity? Form my experience if you go offline there are very few apps that actually work, in most cases people will have constant internet connection.

[flutter-painter]

Thank you for your quick reply ! That's what I thought. I would be curious to mesure how this affects performances. It could make the case for a dedicated Dart/Flutter SDK suited to the needs of the unconstantly connected, i.e. sober sync design. I beg to disagree and reckon that most people have inconstant connectivity, mostly because of low income vs prepaid internet cost + lack of infrastructure and rural isolation. To keep this in mind facebook delibarately slowed their employees productivity : https://www.theverge.com/2015/10/28/9625062/facebook-2g-tuesdays-slow-internet-developing-world But yeah most people targetted by a paying/add-based app can afford connectivity

…

________________________________ From: Guilherme Oenning ***@***.***> Sent: Saturday, July 22, 2023 7:31:17 AM To: aptabase/aptabase_flutter ***@***.***> Cc: Pierre Gancel ***@***.***>; Author ***@***.***> Subject: Re: [aptabase/aptabase_flutter] offline (Issue #2) Our SDK doesn't explicitly check for that, not sure about the underlying OS though. Why do you say they allergic to connectivity? Form my experience if you go offline there are very few apps that actually work, in most cases people will have constant internet connection. — Reply to this email directly, view it on GitHub<#2 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ADMBPBQ6CHU45SW7LRUWOALXRNQSLANCNFSM6AAAAAA2SXGWWA>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[goenning]

You're right, my comment was based on my own bubble, which is not very representative!

Would you like to contribute with Offline support for the Flutter SDK?

[flutter-painter]

Sure ! It would be useful to write connectivity tests,
Will do it slowly, by the end of the summer

[goenning]

Awesome, great to have you onboard. There's no rush at all as I still need to work on the batch event ingestion api.

It'll probably be something like:

POST /api/v0/events (instead of /api/v0/event for a single event)
[
 { event1 },
 { event2 }
]

And with regards to the SDK, I was thinking of when trackEvent is called, it would simply enqueue it in memory and then dispatch the list of in-memory events every X seconds if there's internet connectivity

[rafagazani]

What are you thinking for offline persistence? sqlite3? file?

[flutter-painter]

SEMBAST, there is already a PR : #6
You could also plug SQLite3 or any kind of db on it, it is modular.
But we left it at that because goenning asked additional rework which required a lot of redesign,
You could fork from the PR if needed though, it works for me in production smoothly

[cristipufu]

Hi @rafagazani, @flutter-painter, we merged #8 and release version 0.4.0. Give it a try and let us know how it goes 😸

[flutter-painter]

This is great news ! Thank you for the heads up I will try and likely switch to it :)