Institute of Information Science - University of Miskolc

These notes establish the terminology, motivation, and architectural background of the course.

• Introduction - Concept page introducing software integration, interface-driven design, data exchange, and testing concerns.
• Software Integration - Core theory page on integration problems, legacy systems, middleware, file-based integration, databases, and integration strategies.
• Evolution of Software Integration methods - Historical and architectural overview showing how integration moved from tightly coupled systems toward middleware and enterprise integration approaches.
• 12-Factor App Methodology - Operational design principles for modern service-based systems, deployment, configuration, and runtime behavior.
• Semantic Versioning - Compatibility-focused versioning rules for APIs, components, and evolving systems.

This block covers foundational distributed communication techniques and older but historically important integration models.

• Object Request Broker (CORBA) - Classical middleware and distributed object communication with ORB, IDL, and broker-based invocation.
• Integration based on TCP/IP Sockets - Low-level point-to-point communication and the basic mechanics of network integration.
  • Java example for Blocking and Non-Blocking Socket - Practical Java socket example for synchronous and asynchronous communication patterns.
  • Python example for Blocking and Non-Blocking Socket - Practical Python socket example for blocking and non-blocking communication.
  • Socket Exercises - Practice tasks for reinforcing socket-based communication.
  • HTTP server - Example page connecting socket-level understanding with a simple application protocol.
• Java - Remote Method Invocation - Java-specific remote invocation model, useful for understanding language-bound distributed calls.
  • Original paper: A Note on Distributed Computing
  • Oracle tutorial: Java RMI Tutorial
  • Group chat - Applied example built around the RMI communication model.
  • Group chat - NodeJs - Comparative communication example using Node.js.
• Integration based on RPC Remote Process Call - Conceptual transition from raw communication to call-oriented distributed interaction.
  • XML-RPC example - Structured RPC example using XML-based message exchange.

These topics focus on structured service contracts, modern remote procedure calls, and API-oriented integration.

• Modern Data Integration based on Protocol Buffer - Schema-driven data exchange and compact cross-language serialization.
• Google's modern remote procedure call technique - Modern RPC based on Protocol Buffers and service contracts.
• JSON-RPC - Lightweight remote procedure calls over JSON, useful for comparing RPC with REST-style APIs.
• REST API - Resource-oriented integration with HTTP methods, representations, and stateless interaction.
• graphQL integration - Query-driven API design that lets clients request exactly the data they need.

Integration is not only about protocols. It also depends on packaging, deployment, runtime isolation, and service-to-service topology.

• Docker integration techniques - Container-based integration and deployment as a practical runtime foundation.
  • Simple multi container example - Hands-on example of multi-service container composition.
  • Load balancing with haproxy - Example of scaling and traffic distribution across service instances.

This module moves from direct request-response integration toward asynchronous communication, XML-based service standards, and enterprise-scale middleware patterns.

• Messaging systems - Asynchronous communication, queues, brokers, and message-based decoupling.
  • RabbitMQ simple producer and consumer - Introductory example of message publishing and consumption.
  • RabbitMQ complex example - More advanced messaging scenario and message-flow design.
• Web services - XML-centered service integration and standards-oriented interoperability.
  • JAX-WS web service - Java SOAP-style service example.
  • JAX-RS web service - Java RESTful service implementation example.
• Enterprise Service Bus (ESB) - Centralized enterprise integration with routing, transformation, protocol mediation, and QoS concerns.