Modernizing a high‑traffic ticketing platform serving millions of transactions without interrupting revenue streams
A high-traffic live event ticketing platform serving rightsholders, resellers, and affiliate partners needed to modernize its technology stack while maintaining uninterrupted operations.
The application powered critical revenue streams and required a zero-downtime migration from Rails 5.2 to Rails 7.2 — all while active development continued on the platform. The challenge wasn't just upgrading versions; it was ensuring millions of ticket transactions continued flowing during peak event seasons.
Structured collaboration for success
From planning to full production rollout
Dedicated to migration effort
Continued feature development in parallel
We upgraded a legacy Rails stack through controlled checkpoints—isolating risk, keeping releases deployable, and validating stability at every phase.
Framework First
We moved from Rails 5.2 to Rails 6.1 while keeping Ruby 2.7 stable—resolving deprecations, aligning framework configs, and preparing the codebase for modern autoloading patterns.
Language & Runtime Step
With Rails pinned at 6.1, we upgraded Ruby from 2.7 to 3.1.5—addressing keyword-arg changes, updating gems safely, and validating behavior with CI + regression checks.
Final Modernization
We completed the final jump to Rails 7.2 and Ruby 3.3—finishing remaining deprecations, updating dependencies, and ensuring the application is on a supported, secure foundation for long-term maintenance.
Beyond just version numbers: we modernized the entire development and deployment ecosystem
Migrated from Sprockets to jsbundling + Propshaft for a faster, more maintainable asset workflow.
Moved from Paperclip to Active Storage for millions of assets using a dual-write strategy.
Moved from Classic loader to Zeitwerk, refactoring code to resolve naming and namespace conflicts.
Leveraged Semaphore CI pipelines and Kubernetes-based canary releases (1% → 3% → 5% → 100%) for safe rollout.
Kept stable across phases
All CI checks green on release branches
Safe migration with explicit skips + tagging
As part of the Rails modernization, we migrated legacy attachments safely using a dual-write + backfill approach, designed for large datasets and imperfect historical storage.
New uploads were temporarily written to both systems, allowing a gradual switch and an immediate rollback path.
We backfilled historical attachments in batches using background jobs, scheduled off-peak and parallelizable for speed.
Some legacy Paperclip references pointed to missing/moved files. We skipped those safely and tagged records with metadata to prevent broken blobs and maintain traceability.
Updated to Rails 7.2.1 & Ruby 3.3.6 with latest security patches and performance improvements
Updated tooling, CI/CD pipelines, and consistent development environments
Removed deprecated dependencies and APIs, extending platform lifespan
Zero-downtime upgrade maintained during active feature development and heavy production traffic
Our phased, zero-downtime upgrade approach ensures your business continues running while we modernize your technology stack.
All client information is kept confidential under NDA agreements
AI-driven cold storage monitoring that runs only on weekends, cutting costs significantly.
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