INNER CODE UNIT · Python

lifespan

skygazer42/MimirQ · app/main.py:419

async def lifespan(app: FastAPI):
    """Operations on app startup and shutdown."""
    # Startup: create database tables.
    logger.info("Starting MimirQ backend...")
    _ensure_startup_directories()
    _ensure_optional_log_directories()
    _setup_langsmith_tracing()
    _initialize_database_for_startup()
    _bootstrap_initial_admin()
    await _initialize_task_queue()
    _start_task_queue_observability_poller()

    # Tokenizer initialization is process-local. Complete it before readiness so a
    # newly added API replica does not serialize its first concurrent requests.
    _warmup_retrieval_tokenizer()
    _start_runtime_warmup()
    _build_bm25_startup_indexes()
    _schedule_dify_external_knowledge_warmup()

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