Migration — A True Story — From On-Premise to SaaS
summary
Describes migrating an on-premises Java application into a SaaS platform while keeping a single codebase using hexagonal architecture and multitenancy with a pragmatic schema-per-tenant approach. Implements per-tenant caches, locks, thread pools and DB-proxying, integrates Loki for logs, uses JWT for context propagation, employs async-profiler for per-request flamegraphs, and automates error-token→ticket creation; result: thousands of tenants served with lower rollout/support cost and faster root-cause detection.
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chapters (6)
- 0:00Migration introduction
- 3:57Migration as opportunity
- 6:47Multitenant architecture benefits
- 15:18Multitenancy implementation
- 22:47Logging and monitoring in scalable systems
- 28:03Summary
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