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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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Alin Vasile updated HTTPCLIENT-1137:
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Description:
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.
was:
The Via header that gets generated and inserted by the caching layer is adobe
repeatable 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.
> 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
> 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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