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From "Sebb (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1471) ResponseCachingPolicy - eliminate boxing and HashSet
Date Mon, 15 Sep 2014 16:54:34 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14134113#comment-14134113
] 

Sebb commented on HTTPCLIENT-1471:
----------------------------------

So the current Set implementation is about 42% slower than binSearch and 11% slower than linear
int search (though of course a suitable ordering scheme would help in the general case). The
actual times are of course quite small.

> ResponseCachingPolicy - eliminate boxing and HashSet
> ----------------------------------------------------
>
>                 Key: HTTPCLIENT-1471
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1471
>             Project: HttpComponents HttpClient
>          Issue Type: Improvement
>          Components: HttpCache
>            Reporter: Sebb
>            Priority: Minor
>             Fix For: 4.4 Final
>
>
> ResponseCachingPolicy uses 2 HashSets containing a few Integers each for matching int
values.
> This involves lots of boxing plus the overhead of the hashSet.
> Since the numbers of integers involved is very small - at most 6 - it seems unnecessary
to use hashing. A linear search would likely be quicker.
> If the number of entries were to be rather larger, then Arrays#binarySearch might be
better.



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