Zero-Downtime Database Migration
Migrated a production database to a new engine with no downtime or data loss.
Overview
Migrated a production database to a new engine with no downtime or data loss. I set up replication to the new database, validated data integrity, and performed a carefully staged cutover with rollback ready — all with the app staying online. Built with PostgreSQL, AWS, Terraform, this devops & cloud project was delivered for a client in USA and designed for reliability, a clean user experience and long-term maintainability — so it keeps delivering value well after launch.
The challenge
A business needed to move databases but couldn't afford a maintenance window or any data loss.
What I built
I set up replication to the new database, validated data integrity, and performed a carefully staged cutover with rollback ready — all with the app staying online.
Key features
- Automated CI/CD pipelines
- Containerised, reproducible deployments
- Infrastructure as code
- Autoscaling and load balancing
- Monitoring, logging and alerting
- Backups and disaster recovery
The results
- Migrated with zero downtime
- No data loss, fully validated
- Rollback plan ready throughout
This is an example of my devops & cloud work. Need something similar? Start a project →
My delivery process
Discovery
We start by understanding the goal, the users and the constraints — no jargon, just a clear picture of what success looks like.
Plan & design
A clear scope, architecture and milestone plan, so you know exactly what's being built and when.
Build & iterate
Development in reviewable increments with regular updates, so you see working software early and often.
Launch & support
Testing, deployment and ongoing support, so it keeps running smoothly long after go-live.
Zero-Downtime Database Migration — FAQ
Can you build a zero-downtime database migration for my business?
Yes. I build custom devops & cloud solutions like this zero-downtime database migration, using PostgreSQL, AWS, Terraform and tailored to your exact workflow, timeline and budget. Send me your requirements and I'll reply with a clear plan and quote.
How much does a project like this cost?
It depends on scope. After a short discovery call I provide a clear, fixed quote and milestone plan before any work begins — no surprises. Smaller builds start low; larger platforms are quoted per milestone.
How long does it take to build?
A focused MVP can take a few weeks, while a larger devops & cloud build runs in milestones over a couple of months. You'll see working software early and often, not just at the end.
What technology do you use, and will I own it?
This project uses PostgreSQL, AWS, Terraform. I pick the right stack for each project, and you own 100% of the code and infrastructure — delivered in your own repositories and accounts.
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Want something like this built?
Tell me about your project and I'll get back to you within 24 hours. Prefer to chat? Message me on WhatsApp.