_HANOIA PYTHON LIBRARY FOR FEATURE TOGGLING

@JUANDEBRAVO#TEFCONF2016

WHAT IS THIS ABOUT?

“ENABLE FUNCTIONALITIES TO A SUBSET OF USERS”

WHAT IS THIS ABOUT?

• A/B TESTING• FEATURE TOGGLES• CONTROLLED ROLLOUT

A/B TESTING

A/B TESTING

• DEFINE THE HYPOTHESIS• WHICH USERS WILL BE PART OF THE

EXPERIMENT?• HOW WILL YOU MEASURE?• FOR HOW LONG DO YOU NEED TO RUN

THE EXPERIMENT?

QUESTIONS BEFORE YOU START

FEATURE TOGGLES

FEATURE TOGGLES

• DO YOU NEED IT?• DO YOU KNOW THAT A FEATURE

TOGGLE COULD BE CONSIDERED TECHNICAL DEBT? (HTTPS://DZONE.COM/ARTICLES/FEATURE-TOGGLES-ARE-ONE-WORST)

• IT INCREASES TESTING MATRIX

QUESTIONS BEFORE YOU START

CONTROLLED ROLLOUT

CONTROLLED ROLLOUT

• DEPLOY TWO VERSIONS IN PARALLEL

• HOW TO ROUTE TRAFFIC TO THE RELEVANT BRANCH

• ENSURE EVERY USER IS HANDLED IN ONE BRANCH ONLY

QUESTIONS BEFORE YOU START

HANOI

• “PYTHON LIBRARY TO TOGGLE ON/OFF FEATURES USING A BACKEND AS DATA STORE”

• WHY THIS FUNCTIONALITY? PORT OF ROLLOUT GEM (RUBY) BY JAMES GOLICK (R.I.P.)

• HTTPS://GITHUB.COM/JUANDEBRAVO/HANOI• 5 STARS (THANKS EDU AND GUIDO!)• 3 PYTHON INTERPRETERS (2.X, 3.X, PYPY)• 4 RELEASES• 2 WATCHERS

HANOI

HANOI

HANOI