About performance

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Step 4: Add a Servlet Class

(request, response); } } GuestServlet performs the following operations on every http request
Tutorial
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Step 3: Define an EJB Session Bean

Operations on the database will be performed by an instance of a session bean (EJB) class that we will define in this step: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting New > Class. The package name should be guest
Result
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What is new in ObjectDB 2.0?

optimistic locking support. Performance improvement in writing and reading of objects. Level 2
Manual
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JPA / JDO Class Enhancer

ObjectDB Enhancer is a post compilation tool that improves performance by modifying the byte code of compiled classes after compilation. Enhancement is mainly for user-defined persistable classes (entity classes, embeddable classes and mapped superclasses), and is usually optional
Manual
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JPA Primary Key

performance: @Entity public class Event { @EmbeddedId EventId id; : } @Embeddable
Tutorial
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Step 3: Define a Spring DAO Component

Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting New > Class
Tutorial
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Step 4: Add a Servlet Class

the list of guests: doGet(request, response); } } GuestServlet performs
Manual
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Database Server

. For instance, you can increase the maximum JVM heap size and improve performance by using HotSpot JVM
Manual
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Storing JPA Entity Objects

. Storing large amount of entity objects can also be performed by multiple transactions: em
Tutorial
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Step 3: Define an EJB Session Bean

Operations on the database will be performed by an instance of a session bean (EJB) class that we will define in this step: Open the [New Session Bean] dialog box by right clicking the guest package node (in the [Projects] window), selecting New > Other... > Java EE (or Enterprise JavaBeans