opiotrek Karma 28 Created 10 years ago Recent Submissions 1. ▲ Creating activity feeds in PostgreSQL 9.5 (blog.chaps.io) 3 points · 10 years ago · 0 comments 2. ▲ Running concurrent workflows in Ruby (blog.chaps.io) 2 points · 10 years ago · 0 comments 3. ▲ Role-based authorization in Rails (blog.chaps.io) 44 points · 10 years ago · 23 comments All submissions on HN · View profile on HN