Overview
Magento 2 Migration Suite is a large-scale e-commerce system upgrade from end-of-life Magento 1 to Magento 2 for a retailer with over 100,000 SKUs and an average of 5,000 orders per day. This is one of the most complex migrations Ventra Rocket has executed, requiring meticulous planning to guarantee zero disruption to business operations.
The scope included migrating the complete product catalog, full order history, customer data, loyalty points, payment gateways, and more than 40 custom extensions written specifically for the legacy system.
The Challenge
Magento 1 and Magento 2 have fundamentally different architectures — there is no direct upgrade path; every component must be migrated piece by piece. Custom extensions built for M1 are incompatible with M2's module system and had to be completely rewritten.
The hardest requirement was zero downtime: the store had to keep accepting orders throughout the entire migration period. With daily revenue in the hundreds of millions of VND, even one hour of downtime represented unacceptable direct losses.
SEO continuity was equally critical: every legacy URL needed to redirect correctly to its new counterpart, and metadata and sitemap structure had to be maintained without interruption.
Our Solution
Ventra Rocket applied a Blue-Green Deployment strategy combined with dual-write migration: the new M2 system was built in parallel while M1 remained live. During the cutover window, every new order was written to both systems simultaneously, ensuring safe rollback remained possible at any point.
Data was migrated in small batches during off-peak hours, with automated validation after each batch to catch discrepancies immediately. The migration script was built in PHP with resume-from-checkpoint capability in case of interruption.
Key Features
- Zero-downtime Migration Engine: Custom migration tooling with pause/resume support and a safe rollback mechanism for every migration phase.
- Custom Module Port: 40+ M1 extensions analyzed, redesigned, and rewritten to Magento 2 declarative schema and dependency injection standards.
- Elasticsearch Integration: Product search upgraded to Elasticsearch with full-text search, typo tolerance, and high-speed faceted filtering.
- Performance Optimization: Varnish Cache + Redis Session + Redis Cache stack reduced average page load time from 4.2s to 1.1s.
- SEO Preservation: Automatic redirect mapping for 200K+ legacy URLs, ensuring no Google ranking loss during the transition.
Impact & Results
Migration completed in 12 weeks with zero minutes of downtime during peak hours. All 100,000+ SKUs, 3 years of order history, and 150,000 customer accounts were transferred successfully with a data integrity rate of 99.97%.
Post-migration, average page load improved 73%, conversion rate increased 18% due to the optimized checkout flow, and hosting costs dropped 35% thanks to the more efficient Docker-based architecture.
Tech Stack Details
Magento 2 is the leading enterprise e-commerce platform with a broad extension ecosystem and long-term support from Adobe. PHP 8.2 delivers significant performance improvements over PHP 7.x. Elasticsearch 8 provides high-speed product search capable of handling a 100K+ SKU catalog without performance degradation. Docker and Docker Compose standardize development and production environments, eliminating "works on my machine" issues.