Expire and Re-get html page.

[Jinyong Choi]

Hi there.
Please help me.

- Env :
Original content is max-age=300.
and it have many contents in HTML.

- Options in Httpd.conf :
ModPagespeedImplicitCacheTtlMs 300000
rewrite_javascript
rewrite_css
recompress_jpeg

If i often requested a test page before the expire, all target content will optimize by mod_pagespeed.
But, if i request again in six minutes or the next day, contents does not optimize in response.
Of course, the original content does not changed,
and next time i requested again quickly, It was optimized.

I think, if it have many object in HTML, it occurs this happen.
is that right?

1. I want to see a response for fully optimized, when i request first in the next day.
How to this?
Do you have any good idea?
or do it have a plan or feature about this?

2. What does mean the "flush window" in document ModPagespeedRewriteDeadlinePerFlushMs?
is that a one request?

[Joshua Marantz]

The problem is that mod_pagespeed does not proactively freshen resources when the server is idle.  It only does so in response to requests from clients.

There are several ways to compensate for this:

1. Run a cron-job to crawl your site with 'wget' every minute.

2. Use LoadFromFile if possible -- this often makes it possible to get instant responses once a resource is initially optimized.

3. Increase ModPagespeedRewriteDeadlinePerFlushMs to (say) 5000 (5 seconds), which would increase the latency seen by clients requesting the page for the first time since the resources expired, but would make it much more likely the optimizations would increase in time.

Any one of these could work.

-Josh

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