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From "Patrick Linskey (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HTTPCLIENT-1227) DateUtils parsing triggers ParseExceptions
Date Wed, 29 Aug 2012 16:34:07 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-1227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Linskey updated HTTPCLIENT-1227:
----------------------------------------

    Attachment: faster-dates.patch
    
> DateUtils parsing triggers ParseExceptions
> ------------------------------------------
>
>                 Key: HTTPCLIENT-1227
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1227
>             Project: HttpComponents HttpClient
>          Issue Type: Improvement
>    Affects Versions: 4.1.3, 4.2.1, 4.2.2, 4.3 Final
>            Reporter: Patrick Linskey
>         Attachments: faster-dates.patch
>
>
> DateUtils.DEFAULT_PATTERNS is not in the same order as the HTTP header spec [1], and
uses a SimpleDateFormat.parse() method that creates exceptions. The upshot is that in the
common case, extra parsing must happen, and an exception must be created (and its stack must
be filled in). This leads to unfortunate additional CPU overhead.
> [1] http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3.1

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