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Bradley Holt, Developer Advocate Wednesday, March 8, 2017 From Mobile First to Offline First ConFoo Montreal

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Web Browsers as Thin Clients

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Embrace the Chaos of Web Development

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Progressive Enhancement

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Ubiquitous Connectivity

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The Eight Fallacies of Distributed Computing 1.  The network is reliable 2.  Latency is zero 3.  Bandwidth is infinite 4.  The network is secure 5.  Topology doesn't change 6.  There is one administrator 7.  Transport cost is zero 8.  The network is homogeneous

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✈ Mode

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Data Caps

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Urban Canyons

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Local Dev

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Lie-Fi

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Offline First Lack of connectivity is not an error condition.

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Cloudant Sync

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One Database Per User userdb-d76846 userdb-905cec userdb-adc95b userdb-c082f2 userdb-730bba userdb-c3d3e5 userdb-a1ec1f userdb-85a327 userdb-9b9aba userdb-85bcfe serdb-da3d25

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Cloudant Envoy A CouchDB proxy to enable replication of database subsets

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Cloudant FoodTracker

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Cloudant Location Tracker

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Offline First IoT

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Consumer Offline First IoT

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Industrial Offline First IoT

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Offline Camp We took the Offline First community for three day retreats in the Catskill Mountains and in California to help foster the growing Offline First movement

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Get Involved! §  Join the Offline First Slack team: offlinefirst.org/chat/ §  Follow @OfflineCamp on Twitter §  Read the Offline Camp Medium publication: medium.com/offline-camp §  Join us at Offline Camp Berlin (waitlisted)!

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Resources §  Mobile First §  Understanding Progressive Enhancement §  The Eight Fallacies of Distributed Computing §  The Impact of Offline First on the Developing World §  Designing Offline-First Web Apps §  The Service Worker Specification §  Application Cache is a Douchebag §  localForage §  PouchDB §  Apache CouchDB §  IBM Cloudant §  PouchDB for Ionic Framework §  PouchDB for Electron (formerly Atom Shell) §  Quick demo of PouchDB running on a Tessel §  Apache Cordova

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Resources (cont'd) §  Ionic §  Electron §  Tessel 2 §  Cloudant Sync iOS datastore library §  A JSON-based document datastore for Android applications §  Hoodie §  Scaling Offline First with Envoy §  Introducing Cloudant FoodTracker: An Offline-First App §  Field Work §  Location Tracker – Part 1 §  Crafting community events that leave them wanting s’more §  Offline Camp on Medium §  Offline Maps: A Shared Problem in Need of a Shared Solution §  Building the Offline First Community §  Next steps: Building the Offline First community through face-to-face events

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Resources (cont'd) §  Offline/Low-bandwidth UX Design Patterns §  Offline First, the Decentralized Web, and Peer-to-Peer Technologies §  Let’s Talk about Tooling §  Notifications and Alerts for an Offline First World §  Security in Offline First Apps §  Offline First Chat §  Offline Camp on Twitter §  SXSW PanelPicker: From Mobile First to Offline First

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Image Credits §  Thin Client — OpenVMS by Leonardo Rizzi, on Flickr (CC BY-SA 2.0). §  the iOS family pile (2015) by Blake Patterson, on Flickr (CC BY 2.0). §  Screen size visualisation by Orde Saunders, on Flickr (CC BY 2.0). §  fluffy chaos by xdxd_vs_xdxd, on Flickr (CC BY-SA 2.0). §  Device landscape by Jeremy Keith, on Flickr (CC BY 2.0). §  Cell phone tower by Gary Lerude, on Flickr (CC BY-ND 2.0). §  Pneumatic Central by Sleestak, on Flickr (CC BY 2.0). §  Cloud Formation Over the Adirondacks by Bradley Holt, on Twitter. §  Money by thethreesisters, on Flickr (CC BY 2.0). §  Los Angeles Downtown by Aydin Palabiyikoglu, on Flickr (CC BY 2.0). §  workstation by Stev Ngo, on Flickr (CC BY 2.0). §  No Signal by Steve Hodgson, on Flickr (CC BY-SA 2.0). §  Waterfall by Paulo Valdivieso, on Flickr (CC BY-SA 2.0). §  Progressive Web App, le futur du Web au #axawebcenter @hsablonniere #nativeVsWeb #serviceworker #offline1st #sketch http://bit.ly/1TA7IvM by flexbox, on Flickr (CC BY 2.0). §  Service Workers fetch diagram by Mozilla Contributors (CC-BY-SA 2.5). §  Tessel 2 by SparkFun Electronics, on Flickr (CC BY 2.0). §  database by Tim Morgan, on Flickr (CC BY 2.0). §  A mockup of the golden Apple iPhone 5S by Zach Vega, on Wikimedia Commons (CC BY-SA 3.0). §  传感器器 Sensors by Lei Gao, on Flickr (CC BY-SA 2.0). §  Offline Camp location by Bradley Holt, on Twitter.

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Thank You @BradleyHolt