iCloud to Auto-Resolve Sync Conflicts

syncconflictMobileMe's sync conflict resolver. Via BusySync

When it runs into conflicting data, Apple's upcoming iCloud service will automatically determine which is the correct one without bringing the user into it, according to Daring Fireball's John Gruber. Speaking on The Talk Show with Dan Benjamin, Gruber lays out what he believes to be iCloud's course of action in dealing with sync conflicts: (via MacStories)

In iCloud, I believe you will never be presented with [a sync conflict] dialog, no matter how much has changed in one of the instances while it was "offline". The server-side iCloud, when there seemingly is a conflict, will make a decision and it will decide which one is the best (in Apple's terms the "truth"). That is what Steve Jobs means when he says "The Truth is in the Cloud." iTunes will decide which one is right and that's it. iCloud will push that right one to any device that has this account that has a different version.

But, here's the trick – what happens if it's not the right one? On the server side, it will remember all of the other ones, almost like versioning. There will be some sort of interface like "go and look at your contacts." There will be some sort of way to say "show me previous versions and let me pick the one that is right". You pick it and push it back up into the cloud and tell it "that's the truth" and Apple will push it out.

Currently, MobileMe pops up a dialog box (shown above) forcing users to resolve conflicts, before a sync can continue.

Apple hasn't officially revealed many details about exactly how its new services are going to work, iTunes Match nor the other various bits of iCloud. Gruber claims this isn't just a theory, that he knows is sure this is how iCloud will work. We'll know more when iCloud launches this fall.

Top Rated Comments

OllyW Avatar
130 months ago
How will I know that one of my syncs didn't result in "the truth" so I need to check my versioning?

When you turn up for an appointment a day too late?
Score: 14 Votes (Like | Disagree)
arn Avatar
130 months ago
Gruber is full of it. He doesn't even understand enough computer science to know WTF he is talking about.

ARN, I know you have a crush on Gruber, but you have to start recognizing that he's just pulling stuff out of his ass most of the time.

It is pathetic how people fall for this from him time and again.... and of course, nobody goes back and notices when he gets it wrong.

Ok, let's look back then at what Gruber said and you said in 2010.

Gruber's iPhone 4 rumors (https://www.macrumors.com/2010/03/29/next-iphone-double-resolution-display-front-camera-multi-tasking/)
- A4-family CPU system-on-a-chip
- 960x640 double-resolution display
- second front facing camera
- 3rd party multitasking in iPhone 4

And where you replied with the same "Gruber is always wrong" rant: https://forums.macrumors.com/showpost.php?p=9523217&postcount=36

econgeek wrote in March, 2010:
-- Front facing camera. A perennial feature request from the mac rumor mongers that does not make much real sense.

When the new [iPhone 4] doesn't have a front facing camera, will you strike gruber from your reliable rumors list? Or will he get to slide because he was "obviously being sarcastic"?

So, let me ask you this time. If the auto-resolve sync conflicts thing turns out to be true will you add gruber to your reliable rumors list, or are you just going to keep ranting about us publishing his rumors?

arn
Score: 12 Votes (Like | Disagree)
Doctor Q Avatar
130 months ago
How will I know that one of my syncs didn't result in "the truth" so I need to check my versioning?
Score: 7 Votes (Like | Disagree)
Vegasman Avatar
130 months ago
When you turn up for an appointment a day too late?

Yup! Works like the iPhone alarm feature during a daylight savings time change. ;)
Score: 6 Votes (Like | Disagree)
Small White Car Avatar
130 months ago
Although they seem to be dabbling in guesswork I have to imagine that they're right. I can't imagine that Apple would come up with file-versioning in Lion and somehow ignore such features on the cloud side.
Score: 4 Votes (Like | Disagree)
mave1969 Avatar
130 months ago
If my secretary adds an appointment to my calendar (remotely via the office) after I've already booked something myself, it's likely her newer entry will not be "the truth" at all, and my prior appointment will be written over. I could then miss my proper appointment because I didn't "verify" it prior, and that would suck.
...sorry, got carried away there.
The bit you're missing is that with iCloud, when you book something yourself it automatically gets pushed to the calendar your secretary sees, so she never adds a conflicting appointment in the first place. The pervasive concurrency of data is going to stop a lot of these conflicts happening, so the process of resolving them is required less often, and eventually becomes unnecessary.

People worrying about whether iCloud can possibly know which is "the truth" are not seeing the wider aim of Apple, which is to eliminate the possibility of conflicts happening at all.
Score: 3 Votes (Like | Disagree)

Top Stories

iphone12protriplelenscamera

Apple's Orders for Key iPhone 13 Camera Component Expected to Outstrip Entire Android Market

Wednesday June 9, 2021 12:47 am PDT by
Major camera upgrades coming to the iPhone 13 series are putting increased pressure on suppliers to meet Apple's demand for key lens components, according to a new DigiTimes report. Apple has reportedly put Taiwan-based makers of voice coil motor (VCM) components on notice to increase their capacity by 30-40% in order to meet the company's demand, which is expected to outstrip the entire...
live text macos monterey

Several macOS Monterey Features Unavailable on Intel-Based Macs

Wednesday June 9, 2021 8:23 am PDT by
While there are many great new features in macOS Monterey, several of them are not available on Intel-based Macs, according to Apple. On the macOS Monterey features page, fine print indicates that the following features require a Mac with the M1 chip, including any MacBook Air, 13-inch MacBook Pro, Mac mini, and iMac model released since November 2020:Portrait Mode blurred backgrounds in...
m1x mbp tags feature

Apple Lists 'M1X MacBook Pro' in YouTube Tags for WWDC Keynote Video

Wednesday June 9, 2021 7:19 am PDT by
Before WWDC, rumors largely driven by leaker Jon Prosser suggested that Apple would announce redesigned 14-inch and 16-inch MacBook Pros during the conference. Those rumors, however, did not come to fruition. Interestingly, though, Apple lists "m1x MacBook Pro" as a tag for the WWDC keynote uploaded on YouTube. The tag, first spotted by Apple YouTuber Max Balzer on Twitter, is among other...
macos monterey setup assistant

macOS Monterey Allows You to Erase a Mac Without Needing to Reinstall the Operating System

Wednesday June 9, 2021 4:41 pm PDT by
It's been a few days since Apple announced macOS Monterey, and we continue to dig through new features that weren't mentioned during the WWDC keynote, including a much more convenient way of erasing a Mac. Following in the footsteps of the iPhone and iPad, the Mac has gained an "Erase All Content and Settings" option on macOS Monterey. The option allows you to erase all user data and...
apple repair service expansion iphone repair 07072020 big

Apple Agrees to Multimillion-Dollar Settlement After iPhone Repair Technicians Post Customer's Private Photos Online

Monday June 7, 2021 2:44 am PDT by
Apple has paid a 21-year-old millions of dollars in a legal settlement after photos and videos from the customer's iPhone, sent in for repair, were uploaded to Facebook, leading to "severe emotional distress," according to a new report from The Telegraph. The incident occurred in 2016 at a repair facility run by Apple supplier Pegatron in California. The 21-year-old college student sent her...
16 inch macbook pro m2 render

New MacBook Pro Shipments Forecasted to Begin in Third Quarter

Tuesday June 8, 2021 8:28 am PDT by
While leaker Jon Prosser claimed that a new MacBook Pro was coming at WWDC, Apple's keynote did not include any new hardware announcements. Instead, it is looking increasingly likely that redesigned 14-inch and 16-inch MacBook Pro models powered by a faster iteration of the M1 chip will be released in the third or fourth quarter of the year. A paywalled preview of a DigiTimes report today...
maxresdefault

Hands-On With iOS 15: See Apple's New Operating System Update in Action

Tuesday June 8, 2021 3:28 pm PDT by
Apple yesterday unveiled iOS 15, the newest version of the iOS operating system that runs on the iPhone (and the iPad with iPadOS 15). iOS 15 is a significant update that introduces many important new features, and we thought we'd give MacRumors readers a first look at the new software. Subscribe to the MacRumors YouTube channel for more videos. Not everything that was announced yesterday is...
imac macbook pro macos monterey

Newer Macs Can Use Another Mac as an External Display on macOS Monterey

Wednesday June 9, 2021 2:10 pm PDT by
One of the key new features of macOS Monterey is the ability to AirPlay content to a Mac from other Apple devices, such as an iPhone, iPad, or another Mac. According to the macOS Monterey features page, AirPlay to Mac works works both wirelessly or wired using a USB cable, with Apple noting that a wired connection is useful when you want to ensure that there's no latency or don't have access to a ...
Dark Sky App Featured

Dark Sky iOS App, Website, and API Now Scheduled to Remain Available Until End of 2022

Thursday June 10, 2021 7:34 am PDT by
Last year, Apple acquired the weather app Dark Sky, and shortly after its purchase, Apple shut down the app for Android. Despite the revamped iOS 15 Weather app taking heavy inspiration from Dark Sky, the weather's app standalone iOS app, web app, and API will remain available until the end of next year, compared to the end of this year, as previously planned. Dark Sky announced in an update ...
photos app remove from featured

iOS 15 Finally Lets You Block Your Exes From Ruining Your Photo Memories

Wednesday June 9, 2021 12:37 pm PDT by
With iOS 15, Apple is introducing more granular control over the people and places that show up in your Photos Memories, letting you fine tune just who makes random appearances in the Photos app and the Photos widget. In iOS 14, the option on the right was available, but in iOS 15, the person-specific option is new You've already been able to select "Suggest Fewer Memories Like This" when...