Not all data changes daily. Product catalog, tax rates, company info — static for the report period.
The book is structured into three primary segments designed to bridge the gap between application development and database administration: high-performance java persistence pdf 20
Java Persistence API (JPA) is a standard Java API for accessing, persisting, and managing data between Java objects/classes and a relational database. It's built on top of the Enterprise JavaBeans (EJB) specification and provides an abstraction layer on top of JDBC. Not all data changes daily
, primarily based on the comprehensive findings from Vlad Mihalcea's High-Performance Java Persistence Executive Summary It's built on top of the Enterprise JavaBeans
Caching (first-level, second-level, query cache) Explain first-level (session) cache is per persistence context and automatic. Second-level cache (e.g., Ehcache, Infinispan) can reduce DB load for frequently-read immutable data; however, caching introduces complexity with invalidation and consistency. Query cache can help repeated query results but must be used cautiously. Cache only when data change frequency and staleness tolerance allow.