Update background tasks

src/app/services/cache_updater.py

@@ -61,11 +61,10 @@ async def check_books(ctx: dict, *args, **kwargs) -> None:  # NOSONAR
     except httpx.ConnectError:
         raise Retry(defer=15)  # noqa: B904
 
-    for i, page_number in enumerate(range(books_page.total_pages, 0, -1)):
+    for page_number in range(books_page.total_pages, 0, -1):
         await arq_pool.enqueue_job(
             "check_books_page",
             page_number,
-            _defer_by=2 * i,
             _job_id=f"check_books_page_{page_number}",
         )
 

src/core/setup_arq.py

@@ -29,8 +29,9 @@ class WorkerSettings:
     on_startup = startup
     on_shutdown = shutdown
     redis_settings = get_redis_settings()
-    max_jobs = 2
+    max_jobs = 1
     max_tries = 1
     job_timeout = 10 * 60
     job_serializer = msgpack.packb
     job_deserializer = lambda b: msgpack.unpackb(b, raw=False)  # noqa: E731
+    expires_extra_ms = 7 * 24 * 60 * 1000