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> HTTP headers, GZip, Cache etc...
post Sep 16 2018, 12:47 PM
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I have some php gz compressing, caching (and more) code which does the next:

4 files are used:
1. (gz, force cache, css external)
2. (gz, no cache, css external)
3. (gz, force cache, css internal)
4. (gz, new code, css internal)

Net headers (curl used):

I have tried some online checkers and here are REDBot results.
Page index
Page i1
Page i2
Page i3

I would like to know:
1. Which of pages above gave the best results.
2. How to solve REDBot problems / warnings.
2.1. “The resource doesn't send Vary consistently.”
2.2. “The response body is different when content negotiation happens.”
2.3. “The ETag doesn't change between negotiated representations.”
3. How to gzcompress external CSS (or any other content)?
4. How to cache page-images?

1. Is pragma cache / no-cache depreciated?
2. Is connection keep-alive depresiated?
3. Do we still need content-length?
4. How I can simulate browser which does not support GZip compression to see the unzipped content?


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Dag   HTTP headers   Sep 16 2018, 12:47 PM
Dag   For example, this one looks OK for me (98/99): htt...   Sep 16 2018, 03:21 PM
Dag   The best so far (greeny; no red): https://gtmetri...   Sep 17 2018, 07:00 AM

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