Backoff indicators¶
Backoff header on heavy load¶
A Backoff
header will be added to the success responses (>=200 and
<400) when the server is under heavy load. It provides the client with
a number of seconds during which it should avoid doing unnecessary
requests.
Backoff: 30
Note
The back-off time is configurable on the server.
Note
In other implementations at Mozilla, there was
X-Weave-Backoff
and X-Backoff
but the X-
prefix for
header has been deprecated since.
Retry-After indicators¶
A Retry-After
header will be added to error responses (>=500),
telling the client how many seconds it should wait before trying
again.
Retry-After: 30