The document discusses minimizing the size of a Java "Hello World" class file. It begins by creating a simple "Hello World" Java class that prints the message, which compiles to a 408 byte class file. The document then explores using Jasmin assembler to reduce the size to 303 bytes by removing the constructor. It analyzes the class file format and constant pool, identifying the constant pool as the dominant size component in small programs. The document proposes ways to further minimize the class file size by reducing the constant pool, such as removing the SourceFile attribute.
Apache ActiveMQ Artemis is a high performance, flexible, and lightweight message broker that supports clustering, high availability, and multi-protocol communication. It provides asynchronous messaging, decoupling of producers and consumers, and routing capabilities through the broker. The broker can be run in clustered and replicated configurations for scalability and reliability. It supports common protocols like AMQP, OpenWire, MQTT, STOMP, and HTTP for communication. Getting started involves creating a broker instance, configuring it, running the broker, and running producer and consumer clients to send and receive messages.
Apache ActiveMQ Artemis is a high performance, flexible, and lightweight message broker that supports clustering, high availability, and multi-protocol communication. It provides asynchronous messaging, decoupling of producers and consumers, and routing capabilities through the broker. The broker can be run in clustered and replicated configurations for scalability and reliability. It supports common protocols like AMQP, OpenWire, MQTT, STOMP, and HTTP for communication. Getting started involves creating a broker instance, configuring it, running the broker, and running producer and consumer clients to send and receive messages.