expression, noun
heavy traffic; traffic spike
Computing term for a sudden or sustained high volume of requests to an online server, often causing slowdowns or outages.
新製品の発売直後、サイトにアクセス集中が発生した。
Right after the new product launch, heavy traffic hit the site.
アクセス集中でサーバーがダウンした。
The server went down due to a traffic spike.