Djangocon Europe 2017: Planet Friendly Django

My talk from Djangocon Europe, on Planet friendly Web development with Django.

1. Planet friendly Web Development Chris Adams Djangocon Europe 2017
2. Chris Adams: @acdha Successful, prolific, well known django developer Chris Adams: @mrchrisadams Not this guy… This guy Environmentally focussed web generalist
3. A.M.E.E. (Avoid Mass Extinction Engine) - CO2 calculation APIs Loco2 - Low CO2 travel in Europe by train TeaLight - Low CO2 cups of tea, with demand response My Background:
4. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams
5. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams @mrchrisadams What can a technologist do about climate change: worrydream.com/climatechange
6. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams http://www.iea.org/media/news/2017/GlobalCarbonEmissions2.png http://www.iea.org/newsroom/news/2017/march/iea-finds-co2-emissions-flat-for-third-straight-year-even-as-global- economy-grew.html
7. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams http://folk.uio.no/roberan/t/global_mitigation_curves.shtml
8. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams @mrchrisadams World GHG Emissions in 2010 - Analysis by ECOFYS Source* Greenhouse gas Coal 25% Natural Gas 19% Oil 21% Waste 0.4% Sector Direct emissions 34.6% * Greenhouse gases can arise from two sources N20 7% CH4 15% CO2 76% HFCs & PFCs 2% Transport 15% Residential Buildings 11% Commercial/Public Buildings & Services 7% Land Use Change 15% Industry 29% 7% 6.0% 4.8% 4.3% 1.4% 1.1% 1.0% 10.5% 1.5% 2.6% 10.5% 5.5% 1.4% 1.8% 3.1% 4.4% 10.3% Other industries Paper, pulp and printing Food and tobacco Non-ferrous metals Chemical and petrochemical Iron and steel Non-metallic minerals Aviation Others Road Livestock and manure Agricultural Energy Use Coal Mining Oil and gas extraction, refining and processing Deforestation/Afforestation and Land Use CO2 Agricultural soils 1.3% 1.6% Landfills Waste water & others Waste 3% Agriculture Energy Supply 13% 8.3% Energy industry own use & losses
9. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams © 2011-2012 GreenTouch Consortium 2020 ICT Carbon Footprint 820m tons CO2 360m tons CO2 260m tons CO2 2007 Worldwide ICT
 carbon footprint:
 2% = 830 m tons CO2 Comparable to the
 global aviation 
 industry Expected to grow 
 to 4% by 2020 The Climate Group, GeSI Report “Smart 2020”, 2008 Full report - https://www.slideshare.net/greentouch-org/intro-to-green-touch
10. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams A mental model for thinking about this
11. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams Your Servers Your Packets Your Process
12. Your servers Provider Provisioning
13. Your servers Provider: Where did the power your servers run on come from?
14. Power quote From 2017 report - http://www.greenpeace.org/usa/global-warming/click-clean/
15. Your servers Provision: How many server resources do you use? And when?
16. The power of wireless cloud 2013 (CEET - http://www.ceet.unimelb.edu.au/publications)
17. “many workloads are spiky or drop to zero for extended periods… applications used in the workplace may only be active for 40 of the 168 hours in a week.” Adrian Cockroft @adrianco: AWS, ex Netflix @mrchrisadams https://medium.com/@adrianco/evolution-of-business-logic-from-monoliths-through-microservices-to-functions- ff464b95a44d#.4ap421dwr
18. PaaS: Higher unit cost in exchange for easier scaling
19. FaaS / Serverless: Even higher unit cost, to not think about scaling* * You still need to obviously, but differently
20. “the technical capabilities of serverless might not be that exciting, but the financial side sure is… Strong financial incentives for good design practices, and clear financial penalties for bad design” Gojko Adzic @mrchrisadamshttps://gojko.net/2016/08/27/serverless.html
21. When your second biggest cost after staff is data centres, you have a very good incentive to care about saving energy. @mrchrisadams https://deepmind.com/blog/deepmind-ai-reduces-google-data-centre-cooling-bill-40
22. Platform as a Service (PaaS) Functions as a Service django-configurations Cloudfoundry: App Autoscaler zappa Heroku: Autoscaling & LightSwitch chalice In the Django toolbox
23. Your packets Lossy changes Lossless changes
24. http://www.electricitymap.org/
25. “Wireless access network technologies account for 90% of total wireless cloud energy consumption. Data centres account for only about 9%. The energy consumption of wireless user devices is negligible.” The power of wireless cloud 2013 (CEET - http://www.ceet.unimelb.edu.au/publications)
26. Power quote The power of wireless cloud 2013 (CEET - http://www.ceet.unimelb.edu.au/publications)
27. https://www.soasta.com/blog/page-bloat-2015-web-performance-monitoring/
28. Power quote https://performancebudget.io
29. Power quote https://speedcurve.com (see also sitespeed.io for an OSS take)
30. Your packets Lossy changes: How much of what you send is used by the client?
31. Your packets Lossless changes: How efficiently are the bits sent?
32. Dynamic Static Media compression Django middleware & decorators Whitenoise, CDNs, Nginx CDNs, Nginx caching Django middleware & decorators Whitenoise, CDNs CDNs, Nginx JS optimisation Webpack 2, Google Closure Compiler (JS) nginx mod_pagespeed Image Optimisation ImageOptim, Trimage easy- thumbnails.optimise, nginx mod_pagespeed Relevant in the Django toolbox
33. There’s much, much more to do, but starting here can help
34. Thanks! I’m around all week, and in the slack channel to chat. Say hello :) Chris Adams @mrchrisadams productscience.co.uk https://www.slideshare.net/chris.d.adams
35. Djangocon 2017 - Planet Friendly Web Development @mrchrisadams Bonus life-changing link: What can a technologist do about climate change? - Bret Viktor worrydream.com/climatechange