Winch is a sync engine for iOS and Android apps. It lets you build highly responsive mobile apps that even work off-line. These slides give an overview including a case study that leverages Mantle - a model framework for Cocoa and Cocoa Touch. Presentation made for CocoaHeads Paris. See: * https://winch.io * http://cocoaheads.fr/2013/11/la-gestion-des-donnees-le-14-novembre-a-paris/ * https://github.com/deltheil/snippets * https://github.com/github/Mantle

3. In-app latencies
translate into...

4. frustrated users :(

5. Common app pattern
Every user action requires downloading data
• pros: simple to implement,
• cons: poor user experience.

6. "Speed is a
feature"

7. Minimize in-app
latencies...

8. to make your
users happy :)

10. Build Faster
Mobile Apps

11. Additional benefits
Besides reacting faster, your app:
1. works off-line,
2. stays up-to-date seamlessly.

12. How does it
work?

13. As simple as 1, 2, 3
1. import your data,
2. drag and drop the Winch iOS framework,
3. call sync() .

14. Concepts

15. “
In short
Winch is a key-value data store.

16. Think of it as...
datastore
~ database
namespace
~ table
key
~ primary key
value
~ data

17. Example:
Snippets for iOS

18. What is Snippets?
• an iOS app to learn and experience your favorite tech on-the-go,
• it works with Redis so far,
• it is open source,
• it is powered by Winch.
Initiated at AngelHack Paris, October 2013.

19. Overview

24. Data Model

25. Commands: rds:cmds
• key: command unique ID, e.g "get"
• value: JSON doc with command name, summary, CLI sample, e.g:
01. {
02. "name": "GET",
03. "summary": "Get the value of a key"
04. "cli":["GET nonexisting",...]
05. }

26. Groups: rds:groups
• key: integer key, e.g "0003"
• value: JSON doc with group name and related commands, e.g:
01. {
02. "name": "Hashes",
03. "cmds": ["hdel", "hget", ...]
04. }

27. HTML docs: rds:docs
• key: command unique ID, e.g "get"
• value: HTML fragment, e.g:
01. <h1>GET key</h1>
02. <h3>Available since 1.0.0</h3>
03. ...
It is used with: [webView loadHTMLString:html baseURL:nil];

28. Model Layer

29. “
Use Mantle™, by GitHub
Mantle makes it easy to write a simple model layer
for your Cocoa or Cocoa Touch application.

31. RDSCommand.h

32. RDSCommand.m

33. Winch Category

34. “
Write app specific helpers
Create a WNCDatabase+MyApp category and
implement custom extensions for your app data
model.

35. Overview

36. Sync
Abstract your namespaces under a custom sync method:

37. Fetch
Get a collection of model objects via a single call:

38. Save
Persist local data with a local namespace:

39. Questions?

40. Thanks :)