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April 13, 2020 05:28
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74thAirhacksQ&A.md
If my EJB is thread safe could I use @singleton instead of @stateless? If not what would be the main reasons not to do so?
Hi Adam,
what are your thoughts about JHipster ?
Thanks and good topics this airhacks edition.
Gabriel
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Hi Adam,
Some Payara monitoring questions:
Do I need to enable monitoring to be able to get statistics. I'm asking because if I don't enable it and connect with visualVM I do see e.g. jdbc-connection-pool statistics. But if I connect with jmx_exporter from Prometheus I don't get them.
What is the impact on performance when I enable jdbc-connection-pool monitoring in Payara and get that data e.g using the jmx_exporter from Prometheus. So would it be wise to have this enabled in a production environment? If not how would you monitor the jdbc but also thread pools?
Is there a better way (compared to using jmx) to get the monitoring statistics? Or is e.g. the rest monitoring interface just built on top of the jmx stack?