sessionCache.put(session.getSessionId(), session);
        if (logger.isDebugEnabled()) {
            logger.debug("Created chat session: sessionId={}, userId={}", session.getSessionId(), userId);
        }
        enforceMaxSize();
        return session;
    }

    /**
     * Finds a session by ID without updating the last accessed time.
     *
     * @param sessionId the session ID