, 40 tweets, 28 min read Read on Twitter
Kent Beck (1999) @KentBeck
Kent Beck (2004) @KentBeck
Eric Ries (2008, 2009)

✅ deployed in small batches

Timothy Fitz

✅ continuous deployment (2009)
✅ frequent small commits (2016)

2014: Limoncelli et al

✅ small batches

Danilo Sato (2016)

✅ incremental is better
✅ delivering small batches

@dtsato #DevOps
DevOps Handbook (2016)

✅ small batch sizes

@RealGeneKim #DevOps
Thomas Limoncelli (2018)

✅ Small Batches Principle

@yesthattom #DevOpsDays #DevOpsDaysNyc
Randy Shoup
DevOpsDays Cuba 2017

✅ small incremental changes
✅ release smaller units of work

@randyshoup #DevOpsDays
Slack (2018)

✅ 100+ prod deploys a day

@hollyjallen #qconsf
Adrian Cockcroft (2019)

✅ change one small thing at a time

@adrianco @CraftConf
Charity Majors (2019)

✅ do not batch up multiple people’s commits into a deploy

Jez Humble (2019)

✅ small batches
✅ released frequently

@jezhumble @CraftConf
2017: Building Evolutionary Architectures

✅ make small changes

@neal4d @rebeccaparsons @patkua
Twilio (2019)

✅ 100 deployments per day

@JustinMKitagawa @CraftConf
Poppendieck (2003, 2006)

✅ small batches

@mpoppendieck #LeanSoftware
The Lean Startup (2011)

✅ small batches at IMVU

@ericries @TimothyFitz
GitHub (2011)

✅ "we deploy 10 to 40 times a day"

✅ "if something breaks, you know exactly what breaks, really quickly"

@RubyMidwest @holman
Joel Spolsky (2012)

✅ smaller and smaller changes

Spotify Engineering (2014)

✅ small and frequent releases

Google (2016)
SRE book

✅ smaller batches

@srebook @jennski #srebook
Building Microservices (2015)

✅ small, incremental changes

Agile Manifesto (2001)

✅ deliver working software frequently

@martinfowler @KentBeck @pragdave @PragmaticAndy
2004: Kent Beck

✅ daily deployments

Mike Bryzek
Surge conference
September 2013

✅ every release is small

@mbryzek #gilttech
Zalando (2016)

✅ strive for very short release cycles

Microservice Architecture (2016)

✅ reducing the size of the deployment unit

@MattMcLartyBC @inadarei @mitraman @mamund
Airbnb (2017)

✅ frequent deploys
✅ smaller batches

@MelanieCebula @AirbnbEng
Accelerate (2018)

✅ reducing batch size
✅ reduces risk

The Practical Science of Batch Size (2012)

✅ benefits of small batch testing

Michael Nygard
Release It (2007, first edition)

✅ remove people from the process
✅ make the whole thing more automated

Flickr (2009)

✅ small frequent changes

Wealthfront engineering (2011)

✅ ship to production more than 30 times a day

Shopify (2016)

✅ deploy 30 times each day

@KatDrobnjakovic #RailsConf
Netflix (2013)

✅ reduce the number of changes per deployment
✅ mitigate risk

@WeAreNetflix #deployments
Etsy (2015)

✅ push smaller changes

@codeascraft #ContinuousDelivery
Uber engineering (2016)

✅ Micro Deploy tool
✅ deploying daily

@UberEng #microservices
Salesforce (2017)

✅ smaller batches

Sarah Wells (2019)
Financial Times

✅ changes are small
✅ easy to understand
✅ reversible

@sarahjwells #microservices #qconlondon
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