How We Migrated from Heroku Postgres to AWS RDS

说明与用途

将数据库从 Heroku Postgres 迁移到 AWS RDS PostgreSQL，完成无停机、性能提升、成本降低。

问题

Heroku Postgres was limiting scalability and cost control for a growing application.

结果

The migration completed with minimal downtime, improved performance, and reduced monthly database costs.

工作流

• 1. Export data from Heroku using pg_dump with --no-owner and --no-privileges flags.
• 2. Create a new PostgreSQL instance on AWS RDS and configure security groups.
• 3. Import data into RDS using pg_restore with --no-owner and --no-privileges flags.
• 4. Update application configuration to point to the new RDS endpoint.
• 5. Verify data integrity and application functionality.
• 6. Switch traffic to the new database and decommission the Heroku instance.

证据

We exported the database using pg_dump with the --no-owner and --no-privileges flags to avoid permission conflicts.

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We imported the dump into RDS using pg_restore with the same flags.

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After switching the connection string, we observed no application errors and the database performed better.

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