#4 Development life cycle

• 21 releases from 1995

• 5 releases in the last 5 years

• 4 milestones, called “commit fests”

• 1+ alpha release, 1+ beta release, release candidate

• Spread over ~ 1 year of activities

• Last pattern: release happens in 3rd quarter

• Stakeholders: sponsors, professionals, researchers

• Mailing list: pgsql-hackers@postgresql.org

• PostgreSQL releases are maintained by the community for 5 years