SCRAM authentication in PostgreSQL 10
PostgreSQL's current authentication mechanisms are old and weak by today's standards. MD5, which is used for password-based authentication currently, is generally considered not secure anymore.
PostgreSQL version 10 adds support for a new authentication method called SCRAM. SCRAM addresses the weaknesses of MD5, making password-based authentication secure again.
In this presentation, I will explain how SCRAM works, the benefits it has over current authentication mechanisms, and explore some future enhancements that it will enable.
Greenplum overview for PostgreSQL hackers
Greenplum is an MPP-database, based on PostgreSQL. It was forked from PostgreSQL almost ten years ago, and was open sourced in 2016. This presentation will give an introduction to the Greenplum architecture and main concepts that have been added Greenplum to make it MPP-aware.