[jira] [Closed] (OFBIZ-4201) DateFormat.getDateTimeInstance() is very expensive, we can cache it to improve performance

["Jacques Le Roux (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OFBIZ-4201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jacques Le Roux closed OFBIZ-4201.
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    Resolution: Implemented

I let this as is and will rather create a Jira to replace DateFormat and Simple DateFormat by FastDateFormat as suggested by [Adrian 6 years ago|https://markmail.org/message/zbuaef7aaueij5w2]

> DateFormat.getDateTimeInstance() is very expensive, we can cache it to improve performance
> ------------------------------------------------------------------------------------------
>
>                 Key: OFBIZ-4201
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-4201
>             Project: OFBiz
>          Issue Type: Improvement
>          Components: framework
>    Affects Versions: Release Branch 10.04
>            Reporter: Xiaoming Shi
>            Assignee: Jacques Le Roux
>            Priority: Major
>
> In the files:
> ./apache-ofbiz-10.04/framework/base/src/org/ofbiz/base/util/UtilDateTime.java line:702
> ./apache-ofbiz-10.04/framework/base/src/org/ofbiz/base/util/UtilFormatOut.java line:314
> ./apache-ofbiz-10.04/framework/webapp/src/org/ofbiz/webapp/taglib/FormatTag.java   line: 78
> DateFormat.getDateTimeInstance() is called for every function call of "toGmtTimestampString" or "formatDate". We can cache the value by adding a static class field and improve performance.
> This is similar to the Apache Bug https://issues.apache.org/bugzilla/show_bug.cgi?id=48778



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