Add batch-llm module: 100,000 synthetic tickets classified by a ChatClient in a Spring Batch 6 chunk step with Resilience4j rate limiting and retry, skip-and-record for malformed JSON, restart after kill -9 in a second JVM, and a per-chunk cost ledger. The model is a deterministic simulated ChatModel; prices are configurable placeholders. No provider called.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b4VQVEJWetTT1dYzyJ
2026-10-29 06:10:22 +00:00
parent aa8b1604ed
commit 6d792f00e0
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+# A model regression, the skip limit, and a restart with a fixed model
+
+Execution 1: simulated model returns invalid JSON for 50% of tickets, no re-ask, skip limit 50, 2,000 tickets.
+  status / reason         FAILED / org.springframework.batch.core.step.FatalStepExecutionException: Unable to process chunk
+  tickets read            200 of 2000
+  calls the provider billed before the step stopped: 200  (a full run needs about 2,000)
+  committed results       52     skipped rows 50
+
+Execution 2: same job parameters, same database, model fixed, skip limit 1000.
+  status                  COMPLETED
+  tickets read this time  1900    (execution 1 had committed 100, so the reader resumed after them)
+  committed results       1942     skipped rows 58     classified + skipped = 2000
+  tickets present in BOTH tables: 0  (stale skip rows from execution 1 are deleted when the ticket is classified)