0 AJAX Unplugged Ajax Unplugged Architecture and Tips for Taking Web Applications Offline J.J. Zhuang [email protected]
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00 AJAX Unplugged
Ajax Unplugged
Architecture and Tips for Taking Web Applications Offline
J.J. [email protected]
11 AJAX Unplugged
Agenda
Who’s Zimbra?Why do we need offline Webapps?What options are there?
Review some “offline” technologiesDemo!Architecture of Zimbra DesktopChallenges for the developerQuestions?
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Why Offline?
Lack of always-on internet accessAlways-on need for information
Travel – Air, Train, Auto, etcISP service interruptions
Client or Server (Data Center)Remote; unconnected land and water
Even a remote officeMore and more data lives in ‘the cloud’
Today’s SaaS require network accessThat’s how a true desktop app works
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Why Offline AJAX?
Performance (client and server)Removes latency from network opsOffloads *even* more work to client CPUAllows server requests to be batched
Same UI both online/offlineSaves $$ training users for one appSaves $$ on software costs of separate offline app
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What solutions are out there today?
The Fancy Caching ApproachFirefox 3 Offline SupportGoogle GearsDojo Offline Toolkit
The Desktop VM ApproachMozilla XUL RunnerAdobe AIR (formerly Apollo)Joyent Slingshot
Roll your ownZimbra Desktop
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Firefox 3 Offline
FeaturesAnywhere Firefox runs (*nix, Win, Mac)Gecko rendering for HTML/JavaScriptWHATWG client-side storage, offline eventsSQLite for offline storage
LicenseMPL - Open Source
AvailabilityAlpha 5
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Google Gears
FeaturesLocalServer - Cache & Serve HTML, JS, CSS, etcDatabase - SQLite with full-text searchWorkerPool - Async resource-intensive tasksWinXP & Mac OS X 10.2+ & LinuxFirefox (Mac/Win/Linux), IE (Win)
LicenseOpen Source - New BSD License
AvailabilityPublic BetaGoogle Reader Offline Several Sample Apps
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Dojo Offline Toolkit
FeaturesBuilt on top of Google GearsExtends Gears with a higher level APIEncryption supportSimple Hashtable storage api
LicenseOpen Source like Dojo (AFL or BSD)
AvailabilityBeta with Dojo 0.9Live Demos - Simple, Moxie (doc editor)
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Mozilla XUL Runner
FeaturesWhere Firefox runs (*nix, Win, Mac)Gecko rendering for HTML/JavaScriptJavaScript access XPCOM objects via XPConnect
LicenseMPL - Open Source
AvailabilityDeveloper PreviewShipping apps today (Google Adwords Editor)
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AIR (formerly Apollo)
FeaturesFileIO, On/Off-line, Windowing, Clipboard, DnD, Local Storage, Network APIsEventually could be delivered via Flash►Or like Flash
WebKit for HTML/JavaScript renderingWinXP SP2+ & Mac OS X 10.4.8+
LicensePlan to contribute rendering changes to WebKitActual runtime free but closed sourceDeveloper tools cost (optional)
AvailabilityPre-release BetaSeveral demo apps (on their wiki)
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Joyent Slingshot
FeaturesRuby on RailsActiveRecord SyncSQLite local storageMac OSX & WinXPSeems to lack OS native support
LicenseOpen Source under GPL v2; Commercial versionFree if using Joyent’s application hosting
AvailabilityOSS Public ReleaseSeveral apps ported
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Demo
See it in action
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Zimbra Offline
FeaturesLinux, Win32 and Mac (Intel)Firefox, Internet Explorer and SafariIdentical AJAX interface to online versionMicro Server for sync, persistence, and search►Derby (Meta Data, User Profile)►Lucene (Full text search)►Jetty (HTTP, JSP)►Filesystem for messages
Support for large datasets multi-GBLicense
Open Source - MPL/ZPLAvailability
Zimbra Desktop Alpha
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Zimbra Desktop Sync Service
Underlying file system
Lucene Index Derby
Meta-data/User profile
Zimbra Message
Store
JDBC
J2SE JRE
Jetty
Zimbra AJAX Toolkit
SOAP/XML (JSON) HTTP
Zimbra Desktop Client
Web browser (Firefox, IE, Safari)
ZimletsZimbra POPIMAP
SOAP/XML HTTP
IMAP (Future)
POP(Future)
Zimbra Micro Server Architecture
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Challenges for the Developer
Selecting *what* to take offlineSecurity risksDoes the user need it?Can they use it offline?
Sync is hardConflict resolutionMulti-user and multi-client
End-User Desktop SupportRisk of increased support/debugging costs
Upgrades and PatchesHave a plan *before* you release
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Thank You! Questions?
More Information:www.zimbra.com/desktopwww.zimbra.com/blogwww.zimbra.com/forums
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Some Related Linkshttp://blog.monstuff.com/archives/000272.htmlhttp://developers.sun.com/javadb/overview/product_tour/readme.jsphttp://labs.adobe.com/technologies/apollo/http://www.sitepen.com/blog/2007/01/02/the-dojo-offline-toolkit/http://codinginparadise.org/projects/dojo_offline/release-02-20-2007/demos/storage/editor.htmlhttp://joyeur.com/2007/03/22/joyent-slingshothttp://blog.magnetk.com/2007/03/22/joyent-slingshot/http://www.bluishcoder.co.nz/2007/02/offline-zimbra-with-firefox.htmlhttp://weblogs.mozillazine.org/roc/archives/2007/02/offline_web_app.htmlhttp://ejohn.org/blog/offline-events/http://developer.mozilla.org/en/docs/XULRunnerhttp://blogs.salesforce.com/features/2006/03/offline_edition.htmlhttp://www.tiddlywiki.com/http://www.zimbra.com/desktop
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Next-Generation Integrated Messaging & Collaboration SolutionMail, Contacts, Calendar, Web Documents, Wiki, VOIP, RSS, Mash-ups, Search, Sharing, Web services, etc.
Customers:8M+ paid mailboxes: enterprises, SMBs, hosting providers, EDU & ISPs1400+ customers
What Makes ZCS Different?Innovation – rich, ubiquitous user experience + cost-effective administrationOpen Source – transparency, community, extensibilityCompatibility – diverse environments & user groups support, investment protection, flexibility, application integration
Partners:
Awards:
Zimbra Snapshot
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Zimbra Sync
Zimbra Collaboration Platform
Standards Clients Outlook 2003, 2007Apple Desktop
iPhone
Standards (Q3 beta)
Blackberry
zSync
BES
J2ME
XHTML
IMAP, POP, iCal, RSS/Atom, CalDAV (beta)
zSync
zSync
iZimbra
iSync MAPI
Disaster Recovery
Zimbra Sync
Pocket PC
5 & 6Palm Symbian
Zimbra Server
Alpha
zSync
Evolution (Beta)
Email - Calendar - Contacts - Tasks
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