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64thAirhacksQ&A.md

Ask questions and see you at July, 1st, 6.PM. CET: http://www.ustream.tv/channel/adambien

Also checkout recent episode:

64th airhacks.tv

Please keep the questions Java EE-stic. Means: as short and as concise as only possible. Feel free to ask several, shorter questions.

@altuga

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commented Jun 6, 2019

Hello Adam

Which one should we choose, when and why?

1 - ConcurrencyManagementType.BEAN
2 - ConcurrencyManagementType.CONTAINER

Thanks.

@AlexeyMalkovskiy

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commented Jun 6, 2019

Hello Adam

I have a question about BCE structire and the BeanValidation API. Where should we put custom validators, their annotations and interfaces which define validation groups? Should we introduce special "validation" package on the top level if we have validators which are used in several business packages? if "yes", should we move all validation classes into this package?

Thanks.

@IramKahkashan

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commented Jun 9, 2019

Hello Adem,
Please guide me which java framework should I use to develop online supply chain management system and can we use JPA for that framework?
IramKahkashan.
static-keyword-in-java-59-638

@ciment7

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commented Jun 11, 2019

Hello Adam,

How to invalidate caches between multiple microservices? For example. I cache some data from microservice B on microservice A and microservice C write to B. Then I need to invalidate cache on microservice A in asynchronous way. How to achieve this?

What is your recommendation? My suggest is to use Kafka (may not necessary to use such complex system), maybe MQ is better solution. Do you agree?

Thanks.

@NejcCarl

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commented Jun 15, 2019

Hi Adam,

what is your recommendation if you want to work on an OSGi project and you want to minimize your time investment into OSGi and maximize your time investment into Java EE? What are your options and which one is best for somebody with basic Java EE knowledge?

Thank you for all you do!!!

Best, Nejc

@dempile

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commented Jun 17, 2019

Hi Adam,
In order to create multiple services that communicate with each other I need to introduce a gateway like in Spring Zuul. In Java EE what is the way to achieve that ?
Please can you explain the role of a service registry , and what are the choices in the Java EE plateform.
mjee_0602

thanks

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