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Maciej Walkowiak

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Performance oriented Spring Data JPA & HibernateDevoxx Belgium 20242024-10-07
Shows concrete fixes: use a connection pool and turn off autocommit and disable Spring’s Open Session In View so connections aren’t held during external calls…
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Performance oriented Spring Data JPA & HibernateVoxxed Days Zürich 20242024-03-07
Covers concrete fixes: measure connection lease times with FlexiPool, spot N+1 with IDE tracing or Digma, and QuickPerf catches unexpected extra deletes in…
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Troubleshooting Spring Boot applications with SentrySpring I/O 20222022-05-26
A small React frontend, a Spring Boot movie service, a rating service and RabbitMQ simulate a flaky production flow with a 33% failure rate; Sentry is added…
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Troubleshooting Spring Boot applications with SentryVoxxed Days Zürich 20222022-05-17
Shows Sentry hooked into a small React + Spring Boot movie app where the movie service calls a rating service and is deliberately flaky (33% failure) so Sentry…
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The State of Java Relational PersistenceSpring I/O 20192019-05-16
Covers concrete tradeoffs and working examples: Hibernate/JPA hides many pitfalls (cascades, unexpected schema, N+1 queries) and benefits from a commercial…
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