SELECTED PROJECTS

Technologies
Perl
Oracle
PostgreSQL
DBIx::Class
The Problem
European telecom provider with millions of customer records needed to migrate from Oracle to PostgreSQL. Zero-downtime requirement because customer-facing systems run 24/7. Any downtime means SLA penalties and customer churn. Oracle licensing costs were unsustainable as they scaled.
What We Did
Multi-month phased migration plan. Perl application updates to work with both databases during transition. DevOps infrastructure buildout. Parallel operation period where both databases ran simultaneously. Comprehensive testing at every stage. Rollback plans if anything went wrong.
The Outcome
Complete migration with zero downtime. Not one minute of customer-facing system unavailability. Maintenance costs reduced 40%.