Retry version-less optimistic locking

Author: AnghelLeonard

HibernateSpringBootRetryVersionlessOptimisticLocking/README.md

@@ -10,7 +10,13 @@
 - annotate the corresponding entity (e.g., `Inventory`) with `@DynamicUpdate` and `@OptimisticLocking(type = OptimisticLockType.DIRTY)`
 - mark the method (not annotated with `@Transactional`) that is prone to throw (or that calls a method that is prone to throw (this method can be annotated with `@Transactional`)) an optimistic locking exception with `@Retry(times = 10, on = OptimisticLockingFailureException.class)`
 
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+<table>
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+     <tr><td>
+<a href="https://www.apress.com/us/book/9781484256251"><p align="left"><img src="https://github.com/AnghelLeonard/Hibernate-SpringBoot/blob/master/Spring%20Boot%20Persistence%20Best%20Practices.jpg" height="500" width="450"/></p></a>
+</td><td>
+<a href="https://leanpub.com/java-persistence-performance-illustrated-guide"><p align="right"><img src="https://github.com/AnghelLeonard/Hibernate-SpringBoot/blob/master/Java%20Persistence%20Performance%20Illustrated%20Guide.jpg" height="500" width="450"/></p></a>
+</td></tr></table>
 
-**You may like to try as well:**
-<a href="https://leanpub.com/java-persistence-performance-illustrated-guide"><p align="center"><img src="https://github.com/AnghelLeonard/Hibernate-SpringBoot/blob/master/Java%20Persistence%20Performance%20Illustrated%20Guide.jpg" height="410" width="350"/></p></a>
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