Why Developer Experience Matters Cloud Computing Expo Tuesday, June 9, 2015 Bradley Holt, Developer Advocate @BradleyHolt

2 Image Credit: Complexity by Mark Skipper, on Flickr Enterprise Software!

3 Image Credit: wireframe by baldiri, on Flickr Consumer Technology!

4 Image Credit: Polaroid 450 Portrait by overthinkingme, on Flickr

5 Image Credit: The Old Cash Register by Kool Cats Photography, on Flickr The Buyers Are 
 Not The Users!

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Why This Matters •  Developers are key influencers in purchase decisions •  Developer-focused products •  Infrastructure •  Platforms •  Databases •  The API economy •  Facebook •  Netflix •  Kayak 7 Image Credit: hexbin - hexagon logo repository

Components of Developer Experience

9 Image Credit: Untitled by ludovic, on Flickr

10 10 Image Credit: Microservice architecture by Paul Downey, on Flickr

11 Image Credit: Hack by Brian Rowe, on Flickr

Self-Service •  Discoverable •  Value add over vendor lock-in •  Speed of procurement 12

Composable •  Unix philosophy •  Open integration •  Don't require full platform usage 13

Hackable •  Encourage the unexpected •  Reward innovative use •  Batteries included, but removable 14

Improving the Developer Experience

IBM Cloudant •  Globally distributed data layer for web and mobile applications •  MongoDB-style queries •  Advanced geospatial capabilities •  Full text search indexing 16

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Mango •  MongoDB-style query language •  Declarative query syntax •  Introduced as Cloudant Query •  Contributed to Apache CouchDB 2.0 •  Also available in PouchDB 19 Image Credit: Mango with section on a white background by bangdoll, on Flickr

Comparing Map/Reduce and Cloudant Query 20 function(doc) {
 if (doc.meter && doc.date) {
 emit([doc.meter, doc.date]);
 }
 }" " " " ?startkey=["0123456789","2014-10-13"]" {
 "index": {
 "fields": [
 "meter",
 "date" 
 ]
 }
 }" " {
 "selector": {
 "meter": "0123456789",
 "date": {
 "$gte": "2014-10-13"
 }
 }
 }"

Image Credits 21 •  Complexity by Mark Skipper, on Flickr •  wireframe by baldiri, on Flickr •  Polaroid 450 Portrait by overthinkingme, on Flickr •  The Old Cash Register by Kool Cats Photography, on Flickr •  hexbin - hexagon logo repository •  Untitled by ludovic, on Flickr •  Microservice architecture by Paul Downey, on Flickr •  Hack by Brian Rowe, on Flickr •  Mango with section on a white background by bangdoll, on Flickr

Bradley Holt Developer Advocate bradley.holt@us.ibm.com @BradleyHolt github.com/bradley-holt