r2dbc: Spring Data R2DBC CRUD, DatabaseClient, reactive transactions and Testcontainers Postgres (post 2)

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b4VQVEJWetTT1dYzyJ
2026-10-29 04:16:34 +00:00
parent 89358e7b7c
commit 7d7d4e872e
27 changed files with 813 additions and 0 deletions
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+findAll() on Customer returns rows only. There is no orders field to be lazy or eager:
+  Customer[id=1, name=A, [email protected], tier=STANDARD]
+1+N queries (4 SQL statements for 3 customers) -> [A:2, B:1, C:0]
+two queries (2 SQL statements)                -> [A:2, B:1, C:0]
+one LEFT JOIN, grouped by hand (1 statement)   -> [A:2, B:1, C:0]
+all three strategies return identical aggregates: true