added proper cache invalidation to load_bm25_corpus

python/ebook_search/api/bm25_tasks.py

@@ -8,7 +8,7 @@ from typing import TYPE_CHECKING
 
 from sqlalchemy.orm import Session
 
-from python.ebook_search.bm25_corpus import refresh_bm25_corpus
+from python.ebook_search.bm25_corpus import load_bm25_corpus, refresh_bm25_corpus
 
 if TYPE_CHECKING:
     from fastapi import FastAPI
@@ -56,3 +56,5 @@ def refresh_bm25_for_engine(engine: Engine, config: EbookSearchConfig) -> None:
     """Refresh the BM25 corpus using a SQLAlchemy engine."""
     with Session(engine) as session:
         refresh_bm25_corpus(session, config)
+    load_bm25_corpus.cache_clear()
+    logger.info("ebook_bm25_corpus_cache_cleared_after_refresh")