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https://issues.apache.org/jira/browse/SOLR-127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hoss Man updated SOLR-127:
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Attachment: HTTPCaching.patch
Changes made in this version...
1) refactored etag cache to be core specific.
2) change etag calculation so that (common case) minor incriments in
openTime/lastModTime affect the earlier chars of the etag for faster equals
comparisons (using Long.reverse)
3) refactor config reading into SolrConfig so they don't happen on every
request (the max-age regex was my main concern)
4) refactored a bit more common code into the abstract test base
Comments welcome (particularly since the multicore weakref stuff isn't
something I've given a huge amount of thought to before).
I haven't done enough manual testing to be satisfied that it's working 100%,
but i think everything works as desired. (I would still like to see more unit
tests of the different config variations, but it's not a huge problem or
anything ... we've got the 80/20 rule going for us, there's probably other
areas of the code that are more deserving of additional tests)
> Make Solr more friendly to external HTTP caches
> -----------------------------------------------
>
> Key: SOLR-127
> URL: https://issues.apache.org/jira/browse/SOLR-127
> Project: Solr
> Issue Type: Wish
> Reporter: Hoss Man
> Assignee: Hoss Man
> Fix For: 1.3
>
> Attachments: CacheUnitTest.patch, CacheUnitTest.patch,
> HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch,
> HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch,
> HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch,
> HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch,
> HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch,
> HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch, HTTPCaching.patch,
> HTTPCaching.patch
>
>
> an offhand comment I saw recently reminded me of something that really bugged
> me about the serach solution i used *before* Solr -- it didn't play nicely
> with HTTP caches that might be sitting in front of it.
> at the moment, Solr doesn't put in particularly usefull info in the HTTP
> Response headers to aid in caching (ie: Last-Modified), responds to all HEAD
> requests with a 400, and doesn't do anything special with If-Modified-Since.
> t the very least, we can set a Last-Modified based on when the current
> IndexReder was open (if not the Date on the IndexReader) and use the same
> info to determing how to respond to If-Modified-Since requests.
> (for the record, i think the reason this hasn't occured to me in the 2+ years
> i've been using Solr, is because with the internal caching, i've yet to need
> to put a proxy cache in front of Solr)
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