first-hand

A response is first-hand if it comes directly and without unnecessary delay from the origin server, perhaps via one or more proxies. A response is also first-hand if its validity has just been checked directly with the origin server.

初手

ある応答が起点鯖から直接に、不要な遅延なく (おそらくは幾つかの串を通って) やって来たのであれば、 その応答は初手 (first‐hand) です。 応答は、その妥当性を直接起点鯖で丁度検査したばかりの時にも初手です。