The PostgreSQL Open Source Development Process
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- Melinda Potter
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1 The PostgreSQL Open Source Development Process BRUCE MOMJIAN This explores the Postgres open source development process and developer motivations. Creative Commons Attribution License Last updated: February, / 25
2 Introduction How is open source development different from closed source? What is the pattern of PostgreSQL adoption? What does the future hold for PostgreSQL? 2 / 25
3 Open Source World PostgreSQL Open Source Software 3 / 25
4 Revolutionary Change in Software Development: Challenging Totalitarianism Central Control Few Choices Limited feedback from population 4 / 25
5 Bringing Democracy to Software Development Distributed Control Many Choices Driven by feedback from population 5 / 25
6 Proprietary Software Development Put everyone in a room Discuss new features and how to implement them Everyone goes back to their office More meetings Testing Release Gather user bug reports Repeat 6 / 25
7 Open Source Development Discuss via , with access to a world-wide pool of talent New features discussed over several days by developers and users Coding Patch review Patch application and testing User testing Release 7 / 25
8 Proprietary Software Development Developers Users Design Meetings Receive Software Work in Isolation Acceptance Tests Project Meetings Resolve Problems Testing/Retesting Install Release Production Fix Bugs Resolve Issues 8 / 25
9 Open Source Development Developers Users Propose Feature Internet Discuss Feature Patch Review Patch Review Apply / Testing Testing Beta Testing Beta Testing Release Production Fix Bugs Resolve Issues 9 / 25
10 Typical Proprietary Database Product Life Cycle Create product Grow customer base Reduce development budget Decrease technical support costs Increase license fees Maximize revenue Customers leave End-of-life product All possible because of high switching costs. 10 / 25
11 Typical Open Source Life Cycle Create project Developers create initial software Users and developers improve the software No development budget No technical support costs No license fees No maximizing of revenue No customers leaving! No end-of-life 11 / 25
12 PostgreSQL Is Completely Open Development No controlling company or individual Active multi-company and volunteer community Open development process Leadership encourages new members 12 / 25
13 PG Life: 13 / 25
14 Open Source Software Availability Complexity More Less Vertical Market Business Applications Hobby Applications Development Tools Operating Systems Databases Compilers Scripting Languages Few Many End Users 14 / 25
15 Is It As Good As Proprietary Software? Features Open Source Performance Reliability Close Source Time 15 / 25
16 Problems With Open Source (and Democracy) Requires effort to stay informed Requires effort to receive assistance Database changes more rapidly More self-help 16 / 25
17 Businesses Supporting Open Source Users Customization Technical support Packaged releases Add-on software Training Localized 17 / 25
18 Hybrid Development Open Source Receive Software Enhance Acceptance Tests Testing/Retesting Resolve Problems Release Install Fix Bugs Production Resolve Issues 18 / 25
19 Licensing BSD license, limitation of liability Not GPL, which requires unrestricted source distribution 19 / 25
20 PostgreSQL Evolution Crash SQL Standards Enterprise Flexibility Years Flexibility includes: Application-specific data types, e.g. JSON, range types Advanced index types, e.g. GIN, SP-GiST Single and multi-node scalability 20 / 25
21 Our Developers Why is programming fun? Joy of making things Joy of making useful things Fun of a complex puzzle Joy of learning Tractable medium Concepts derived from The Mythical Man-Month by Frederick P. Brooks, Jr. 21 / 25
22 Open Source Motivations Professional advancement, learn new skills Practical need for the software Mental stimulation Belief in open source Concepts derived from a survey conducted by OSDN and reported in Open source a needed outlet for programming pros, The Register, May 2, 2002, 22 / 25
23 PostgreSQL Motivations Professional advancement, learn new skills Practical need for the software Business needs the enhancement Business wants PostgreSQL to thrive Mental Stimulation Belief in open source 23 / 25
24 Extreme Case It was cheaper to pay to add missing features to PostgreSQL than to buy Oracle. 24 / 25
25 Questions / 25
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