Add db-migrations-flyway-liquibase: Flyway vs Liquibase migrations, rollbacks and baselines on Spring Boot 4.1

Companion code for the Flyway vs Liquibase article: checksum validation, out-of-order and repeatable migrations, baselining an existing schema, Flyway Community's undo/diff/deploy stubs, concurrent-startup locking for both tools, Liquibase changeset identity and rollback (auto-generated vs explicit), a verified Liquibase 5.0.3 filename-caching defect, the new OSS license service, the FSL license change, and running both tools against one database. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01Q6XdRjtsp4862EM44T7i9a
2026-09-15 07:08:57 +00:00
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+spring:
+  application:
+    name: db-migrations-flyway-liquibase
+  datasource:
+    url: jdbc:h2:file:./data/quickstart;AUTO_SERVER=TRUE
+    username: sa
+    password: ""
+  flyway:
+    enabled: true
+  liquibase:
+    enabled: false
+    change-log: classpath:db/changelog/db.changelog-master.yaml
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: flyway,liquibase,health
+
+---
+# ./scripts/run.sh both-naive — both tools enabled against the same fresh database, no other
+# configuration. Fails to start: Liquibase's SpringLiquibase bean runs before Flyway's, so by the
+# time Flyway checks the schema it finds tables it doesn't recognize. See docs/14-running-both-at-once.md.
+spring:
+  config:
+    activate:
+      on-profile: both-naive
+  datasource:
+    url: jdbc:h2:file:./data/both-naive;AUTO_SERVER=TRUE
+  liquibase:
+    enabled: true
+
+---
+# ./scripts/run.sh both-fixed — the fix from docs/14-running-both-at-once.md applied: Flyway is
+# told to baseline the schema Liquibase already built, starting from "nothing has run yet"
+# (baseline-version: 0) rather than the default "version 1 already ran" baseline.
+spring:
+  config:
+    activate:
+      on-profile: both-fixed
+  datasource:
+    url: jdbc:h2:file:./data/both-fixed;AUTO_SERVER=TRUE
+  liquibase:
+    enabled: true
+  flyway:
+    baseline-on-migrate: true
+    baseline-version: 0