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Offline First

Track: Coding and Development | Skill level: Intermediate
erik.erskine

Over the last decade we've changed how we design websites to be mobile-first. But until recently we haven't really been able to do much about poor network connectivity.

As part of support for "progressive web apps", browsers are now starting to include technology that gives developers control of how they handle network requests. By tapping into this we open up all sorts of possibilities - caching things in advance, showing stale content while refreshing in the background, or just keep our users a bit more informed. We can enhance our sites to work better under sub-par network conditions.

This talk will give an introduction to the service worker, fetch and cache APIs. I'll aim to highlight what they do and how you might use them, without going into too much technical detail.

We'll look at some of things we need to consider when providing offline functionality:
- what can we realistically expect to work offline?
- caching isn't one size fits all - different resources require different strategies; these vary according to business and technical reasons
- does it matter if we show stale content?

There's an expectation that native apps are better at working offline. But they often present the same information as on the web, downloaded over the same fallible network. We can draw on the experience of app developers to answer some of these questions.

We'll take an example Drupal site and consider how we might improve it for people with sketchy or non-existent mobile signal or wifi.

Some notes to accompany this talk are available

Slide URL
https://www.erskine.uk/offline-first

Keynote Speakers

Matt Glaman

Matt Glaman

(Saturday keynote)

Matt Glaman is a developer at Commerce Guys. He is an open source developer who has been working with Drupal since 2013. He is author of the Drupal 8 Development Cookbook, maintainer of ContribKanban.com, and lover of Irish Whiskey.

Twitter: @nmdmatt

Jeffrey A 'JAM' McGuire

Jeffrey A. "jam" McGuire

(Sunday keynote)

Jeffrey A. "jam" McGuire—Evangelist, Developer Relations at Acquia—is a memorable and charismatic communicator with a strong following at the intersection of open source software, business, and culture. He is a frequent keynote speaker at events around the world. He writes and talks about technology, community, and more on weekly podcasts and as a blogger on dev.acquia.com. This all helps satisfy his inner diva, which he also feeds with performances as a storyteller and musician.

Twitter: @horncologne

Danese Cooper

Danese Cooper

(Sunday closing keynote)

Danese Cooper currently serves as chairperson of the Node.js Foundation. She also works in an open source role at PayPal. Previously she was Director of the Open Source Hardware Association and CTO of the Wikimedia Foundation. She had brief stint at the Bill & Melinda Gates Foundation as a consulting open source strategist. She has been involved with open source since 1999.

Twitter: @divadanese

CxO Day Speakers

Sarah Wood OBE

Unruly Co-Founder (CEO)

Sarah Wood

David Axmark

Co-founder of MySQL

David Axmark

Ben Finn OBE

Co-Founder of Sibelius and CEO at Stealth Poker

Ben Finn

Barney Brown

Head of Digital at Cambridge University

Barney Brown

Professor Andre Spicer

Professor of Organisational Behaviour at Cass Business School City, University London

Andre Spicer

Paul Reeves

Reevo UN Limited

Paul Reeves

Sponsors

Diamond

CxO Day

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