A lightning talk given during the Austin Python Meetup giving a quick summary of how Bitbucket uses Python internally.

1. MARK ADAMS • SOFTWARE DEVELOPER • BITBUCKET • @MARKADAMS
How we use Python at Bitbucket
(tldr; We use it for everything)

2. WHAT IS BITBUCKET
What is Bitbucket?
•Distributed code hosting
•Perfect for individuals or teams
• Git or Mercurial
• Free for 5 users +
Unlimited private repositories
Try it out! - http://bitbucket.org

3. •Main web application
https://bitbucket.org
•REST API
https://api.bitbucket.org
Web Tier

4. •HA Proxy
TCP load balancing
•Nginx
SSL Termination
•PostgreSQL
Relational database
•Redis
Caching
Web Tier

5. CELERY
Distributed Tasks
• Celery
• Used for asynchronous event processing
• Sending notifications
• Updating pull requests
• Updating activity feed
• RabbitMQ used as the message broker

6. OROCHI
Orochi
• Translated “8-branched giant snake"
• Abstraction library for Git and Mercurial
• Written entirely in Python
• Simplifies the interaction with repositories
Git & Hg have similarities:
• Both store your code
• Both have commits
• Both have branches
Django Celery
Orochi
Storage Layer

7. GIT + HG OPERATIONS
Git & Hg Operations
•HTTP
• WSGI apps - One for Git, One for Hg
•SSH
• OpenSSH - Customized!
• Launches another process (conq) to
perform authentication and execute
DVCS operations

8. Can you guess what
language?

9. Nope, Go

10. But really Python

11. We dogfood our stuff!

13. Feedback?
MARK ADAMS • SOFTWARE DEVELOPER • BITBUCKET • @MARKADAMS

14. We’re hiring!
MARK ADAMS • SOFTWARE DEVELOPER • BITBUCKET • @MARKADAMS