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https://issues.apache.org/jira/browse/HTTPCLIENT-1137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Oleg Kalnichevski updated HTTPCLIENT-1137:
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Fix Version/s: 4.2 Alpha2
> The values for the Via header are created by httpclient-cache for each cached
> and backend request
> -------------------------------------------------------------------------------------------------
>
> Key: HTTPCLIENT-1137
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1137
> Project: HttpComponents HttpClient
> Issue Type: Improvement
> Components: Cache
> Affects Versions: 4.1.2
> Reporter: Alin Vasile
> Priority: Trivial
> Fix For: 4.2 Alpha2
>
> Attachments: cached_via_header_vals.patch
>
>
> The Via header that gets generated and inserted by the caching layer is done
> repeatedly in the HTTP conversation, even if the constructed string is
> constant for each protocol version that is involved.
> The proposed patch constructs a map of generated values held in memory with
> the associated ProtocolVersion as a key and uses read/write locks to access
> the data. This solution minimizes the time to generate such a value from
> several milliseconds to 40-50 microseconds.
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