Modernizing a Legacy Application with Play, Scala and Mongo DB

on YouTube ↗40m

" summary

A legacy monolithic web application is refactored into an API-centered architecture using Play Framework, Scala, Akka and ReactiveMongo so external apps no longer access the database directly. A self-contained "espace candidat" service isolates candidate-facing business logic, and a migration pipeline moves over 10 years of candidate data from SQL to MongoDB with actor-based parallel jobs and a short downtime for the final delta; integration tests run against an embedded Mongo and deployments happen weekly.

AI-written summary · about

" chapters (9)

1. 0:00Introduction
2. 2:08Project constraints goals
3. 5:19Initial architecture
4. 9:47New API architecture
5. 15:01Data migration MongoDB
6. 17:47Testing Play embedded MongoDB
7. 23:00Modern API best practices
8. 29:24Error handling maintenance
9. 32:55Experience report conclusion

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