Breaking the Monolith! Decoupling a Legacy Monolithic Application

on YouTube ↗40m

" summary

How OLX migrated its legacy monolithic authentication system for a platform with 60 million users and 400k requests/min to a microservices-style, more elastic and resilient design. It describes problems of monolithic authentication, lessons learned, a backward-compatible decoupling strategy called “ice cream scoop,” and the migration results.

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" chapters (6)

1. 0:00Start
2. 6:08Replicating sessions across all instances
3. 14:00Code duplication and rework
4. 15:37High request volume
5. 16:19Low fault tolerance
6. 33:49Authentication as a sidecar

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