| Syntax: | sub_filter_last_modified |
|---|---|
| Default: | sub_filter_last_modified off; |
| Context: | http, server, location |
This directive appeared in version 1.5.1.
Allows preserving the “Last-Modified” header field from the original response during replacement to facilitate response caching.
By default, the header field is removed as contents of the response are modified during processing.
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