It is a deep overhaul and simplification of the EJB specification. It's goals are to simplify development, facilitate test driven development, and focus more on writing plain old java objects (POJOs) rather than on complex EJB APIs. It has fully embraced Java Annotations introduced in JDK 5.0 and also simplifies the API for CMP entity beans by using Hibernate as the EJB 3.0 Java Persistence engine.
EJB3 is a tool in the Platform as a Service category of a tech stack.
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What are some alternatives to EJB3?
nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
The core software is built by hundreds of community volunteers, and when you’re ready for more there are thousands of plugins and themes available to transform your site into almost anything you can imagine. Over 60 million people have chosen WordPress to power the place on the web they call “home” — we’d love you to join the family.
The Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Originally designed as a replacement for the NCSA HTTP Server, it has grown to be the most popular web server on the Internet.
Firebase is a cloud service designed to power real-time, collaborative applications. Simply add the Firebase library to your application to gain access to a shared data structure; any changes you make to that data are automatically synchronized with the Firebase cloud and with other clients within milliseconds.