http://java-persistence-performance.blogspot.ro/2011/06/how-to-improve-jpa-performance-by-1825.html# http://spitballer.blogspot.ro/2010/04/jpa-persisting-vs-merging-entites.html Use byte code weaving EclipseLink implements LAZY for OneToOne and ManyToOne relationships using byte code weaving Pagination Use setFirstResult, setMaxResults of javax.persistence.Query. Caching See https://docs.oracle.com/javaee/7/tutorial/persistence-cache001.htm#GKJIO. See in persistence.xml or javax.persistence.sharedCache.mode property when creating the EntityManagerFactory. See javax.persistence.Cacheable used […]