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| Newsgroups | comp.lang.java.programmer |
| Date | Mon, 16 Nov 2015 14:43:34 -0800 (PST) |
| In-Reply-To | <87lhagkcsh.fsf@Equus.decebal.nl> |
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| Subject | Re: Performance JPA |
| From | Lew <lewbloch@gmail.com> |
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On Monday, November 2, 2015 at 12:58:47 AM UTC-8, Cecil Westerhof wrote: > We needed to change from JDBC to JPA. It looks like the performance is > 10 to 20 times as slow as it was with JDBC. I could understand JPA to > be slower as JDBC, but not with this kind of difference. Are there any > common error that would explain this kind of penalty? Yes, treating JPA as a wrapper for SQL and keeping 'DataManager' instances around for too long are the two biggest reasons that JPA performance would suck. I've seen JPA in high-performance applications, even with these mistakes, do very well on speed. But those are the two biggies. -- Lew
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Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-02 09:47 +0100
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-02 14:23 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-03 07:52 +0100
Re: Performance JPA Martin Gregorie <martin@address-in-sig.invalid> - 2015-11-03 11:16 +0000
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-03 19:11 +0100
Re: Performance JPA Martin Gregorie <martin@address-in-sig.invalid> - 2015-11-03 19:15 +0000
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-04 09:28 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-10 08:07 +0100
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-10 10:35 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-11 06:20 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-11 09:32 -0500
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-10 19:56 -0500
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-11 06:50 +0100
Re: Performance JPA Martin Gregorie <martin@address-in-sig.invalid> - 2015-11-11 12:17 +0000
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-11 09:30 -0500
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-11 23:20 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-11 23:11 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-11 19:10 -0500
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-12 07:27 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-13 08:30 +0100
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-13 10:45 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-13 11:06 +0100
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-13 13:36 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-20 09:04 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-13 21:46 -0500
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-20 09:09 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-03 20:35 -0500
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-04 09:35 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-07 22:09 -0500
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-03 12:29 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-03 19:23 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-03 20:44 -0500
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-04 09:48 +0100
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-04 10:23 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-04 11:27 +0100
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-04 12:42 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-07 22:18 -0500
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-09 10:43 +0100
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-20 09:13 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-07 22:12 -0500
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-09 10:22 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-10 21:35 -0500
Re: Performance JPA Silvio <silvio@internet.com> - 2015-11-11 11:29 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-03 20:42 -0500
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-04 11:19 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-07 22:05 -0500
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-02 20:08 -0500
Re: Performance JPA Cecil Westerhof <Cecil@decebal.nl> - 2015-11-03 07:55 +0100
Re: Performance JPA Arne Vajhøj <arne@vajhoej.dk> - 2015-11-03 20:45 -0500
Re: Performance JPA Lew <lewbloch@gmail.com> - 2015-11-16 14:43 -0800
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