Performance issues using LocalValidatorFactoryBean

We have been using LocalValidatorFactoryBean to validate over 1 million objects. After performance profiling and looking at multiple stack dumps, it seems like Spring is creating a new instance of validator every time. This is killing our performance. I have used another implementation of JSR 303 and a new instance of each validator is not created per validation.

Is there a way to disable this functionality of LocalValidatorFactoryBean? We don't need to persist any data and prefer to use validators as a singleton. It seems like the autowiring of each class is slow and not worth doing it every time.

Any help would be appreciated.

Hello

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We have been using LocalValidatorFactoryBean to validate over 1 million objects

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OK, 1M of objects in real time

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it seems like Spring is creating a new instance of validator every time

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I think could be the same JSR 303 by itself to validate each instance, anyway ...

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I have used another implementation of JSR 303 and a new instance of each validator is not created per validation

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How you got such conclusion? Could you share the name of the other implementation?

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Is there a way to disable this functionality of LocalValidatorFactoryBean? We don't need to persist any data and prefer to use validators as a singleton. It seems like the autowiring of each class is slow and not worth doing it every time.

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Have you tried to work with the Spring's Validator interface? You should implement this interface and validate there your objects.

Hello,

The other implementation I have used was Apache's implementation. I came to this conclusion by doing two things. First, I ran a profiler with jVisualVM while validating these objects. Looking at the stack trace, I saw that auto-wiring and reflection methods were taking a really long time. I put sys outs in the constructor and indeed I saw that every single time I validate an object, a new validator is created.

Using Apache's implementation seems to not have this same problem. I don't think it is part of JSR 303 to recreate instances. Using Spring's Validator interface is another option. I had forgotten about that. That is an option. We have already created 100+ annotations though to validate these objects.

What would be good to know if recreating validators is part of the JSR303 specification? I am trying Apache again to validate.

Hello Manuel,

Here are my finding

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Validation.buildDefaultValidatorFactory().getValidator()

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creates one and only one validator.

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<bean id="jsr303Validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
        <property name="providerClass" value="org.apache.bval.jsr303.ApacheValidationProvider"/>
    </bean>

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Create one and only one validator.

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<bean id="jsr303Validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">

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Create n validators for n items!