Microsoft Sync Framework

Microsoft Sync Framework Overview Saturday, June 6, 2009 By HIEU LE TRUNG

Content
Today application’s data issue
Microsoft Sync Framework Overview
Microsoft Sync Framework in Detail
Page

Overview
Microsoft Sync Framework is a platform for synchronizing data across multiple data stores
Available both in managed code, as well as unmanaged code
Features
Pre-define some basic synchronize provider
ADO.NET Sync
Feeds Sync
File Sync
Pre-define SQLCE metadata store
Built-in conflict detection algorithm
The challenges in sync has already been covered by MSF
Change tracking
Conflict detection
Conflict resolving
Connectivity loss
Page

The Issue of Distributed Application Page

Occasional Connected Application
Cache data locally
Work even when you’re not online
Leverage client UI
Minimize network utilization
Synchronize with the server (when connected)
At any time
At any place
Page

Key Scenario for Sync Page
Offline
Cached Mode
Mobile information workers
Rich experience for web services
Collaboration
My contacts, calendar everywhere
Documents everywhere
My music everywhere
Microsoft Sync Framework

The Sync Session Page Sync Provider Sync Application Sync Provider Sync Orchestrator Data Store Data Store changes changes changes changes changes Meta-data Interpretation Tools Provider Services MD Store Sync Runtime

Sync Concepts
Data Source : the location where all information which needs to be synchronized is stored
Metadata : the ability to store information about the data store and the objects within that data store with respect to state and change information
Versions
Knowledge
Tick Count
Replica ID
Tombstones
Knowledge : is a compact representation of changes that the replica is aware of. Providers use replica knowledge to:
Enumerate changes (determine which changes another replica is not aware of).
Conflict Detection (determine which operations were made without knowledge of each other)
Tombstone : is the information for each of the items that are deleted. A tombstone must contain the following information:
Global ID.
Deletion version.
Creation version.
Page

Sync Flow Page

Conflicts & Resolutions
Two kinds of conflict:
Concurrency Conflicts : changes affects on the same item
Constraint Conflicts : conflicts that violate constraints that are put on items, such as the relationship of folders or the location of identically named data within a file system.
Conflict Resolutions
Source wins
Destination wins
Merge
Log
Defer
Page

What is MSF for Developers?
Includes out-of-box providers that can be configured to sync common endpoints
Support for building your own providers for your endpoint
Support for multiple development languages
Managed Code: C#, Visual Basic.NET, …
Native/Unmanaged Code: C++…
To write a sync solution using MSF, you need to write
Provider: the provider class for managing knowledge and sync session
Metadata Store: the metadata is look like change log, you need to implement this in order to determine the changes between two sync period.
Metadata Item: an item in the metadata store
Data Source: the raw data source for syncing.
Knowledge: if you attempt to sync different data source
Your own sync controller class to handle conflicts, changes writing...
Page

Windows Azure Platform Page

SQL Services & MSF
Database: Relational processing for structured/unstructured data
Data Sync: Synchronization for occasionally connected clients
Reporting: Self-service authoring and report sharing
Data Mining: Self-service data trending & analysis
ETL: Data transformation & cleansing across on/off premise
Reference Data: Broad variety of reference data sets
Page

Summary
Microsoft Sync Framework is a platform for data synchronization solutions
Includes out-of-box providers that can be configured to sync common endpoints
Support for building your own providers for your endpoint
Support for multiple development languages
Managed Code: C#, Visual Basic.NET, …
Native/Unmanaged Code: C++…
Do you think that sync should be a hot technology in 2009 and future?
Question?
[email_address]
Page

References
http://en.wikipedia.org/wiki/Microsoft_Sync_Framework
Microsoft Sync Framework Developer - http://msdn2.microsoft.com/en-us/sync/default.aspx
LiveMesh - https://www.mesh.com/Welcome/default.aspx
FeedSync - http://dev.live.com/feedsync/
Google Gears - http://gears.google.com/
http://code.msdn.microsoft.com/sync/
Master-Master Replication - http://msdn.microsoft.com/en-us/library/ms978735.aspx
Page

Microsoft Sync Framework

by Hieu Le Trung on Nov 14, 2008

Accessibility

Categories

Tags

Upload Details

Usage Rights

1 Embed 8

Statistics

Microsoft Sync Framework — Presentation Transcript