Migration on Yongjie Xuehttps://www.yongjiexue.io/en/tags/migration/Recent content in Migration on Yongjie XueHugoen-USTue, 02 Jun 2026 00:00:00 +0000Newspaper Notes: China Hukou Reformhttps://www.yongjiexue.io/en/notes/newspaper-china-hukou-reform/Tue, 02 Jun 2026 00:00:00 +0000https://www.yongjiexue.io/en/notes/newspaper-china-hukou-reform/Study notes for an article about China’s hukou reform, migrant saving, trade tensions, and useful business/economics vocabulary.Online PostgreSQL Column Type Migrationhttps://www.yongjiexue.io/en/pg/migrate-column-type/Thu, 30 Jan 2020 00:00:00 +0000https://www.yongjiexue.io/en/pg/migrate-column-type/How to modify PostgreSQL column types online? A general approachChanging Engines Mid-Flight — PostgreSQL Zero-Downtime Data Migrationhttps://www.yongjiexue.io/en/pg/migration-without-downtime/Tue, 06 Feb 2018 00:00:00 +0000https://www.yongjiexue.io/en/pg/migration-without-downtime/Data migration typically involves stopping services for updates. Zero-downtime data migration is a relatively advanced operation.