Saturday, March 4, 2023

Communication between software systems

Following protocols can be used for communication between software systems

  1. REST (Representational State Transfer): REST can be used as a protocol to exchange data between Desktop applications and web interfaces. Rest uses HTTP for data communications by exchanging data in JSON or XML format. REST has advantages such as scalability and flexibility. some usage examples for the rest are mobile applications, social media platforms, and IoT devices.

  2. SOAP (Simple Object Access Protocol): SOAP is a messaging protocol that enables communication between applications over the internet. It uses XML for data exchange and can be used for enterprise-level applications that require security and reliability. SOAP provides features such as message queuing, routing, and security, making it well-suited for large-scale, distributed systems.

  3. WebSocket: WebSocket is a protocol for real-time, bi-directional communication between client and server. It enables efficient communication between web-based applications and can be used for chat applications, real-time gaming, and other applications that require low latency. WebSocket is often used in IoT applications for real-time data streaming and control.

  4. MQTT (Message Queuing Telemetry Transport): MQTT is a lightweight messaging protocol that is ideal for IoT applications. It allows for efficient communication between devices and systems with limited processing power and bandwidth. MQTT is designed to be reliable and scalable, making it well-suited for IoT applications such as home automation, smart cities, and industrial control.

  5. CoAP (Constrained Application Protocol): CoAP is a protocol for IoT devices with limited processing power and memory. It is a lightweight, RESTful protocol that is designed for efficient communication between constrained devices and resource-constrained networks. CoAP is often used in IoT applications such as smart homes, industrial automation, and smart cities.

  6. DDS (Data Distribution Service): DDS is a publish-subscribe middleware that allows applications to publish data and subscribe to data streams, enabling efficient and scalable data distribution. DDS is particularly well-suited for real-time systems such as autonomous vehicles, industrial automation, and smart grids, where reliable and timely data communication is critical.

  7. AMQP (Advanced Message Queuing Protocol): AMQP is a messaging protocol that enables reliable communication between distributed systems. It provides features such as message queuing, routing, and security, making it well-suited for enterprise-level applications. AMQP is often used in financial services, healthcare, and other industries where data security and reliability are critical.

  8. OPC-UA (Open Platform Communications - Unified Architecture): OPC-UA is a protocol for communication between industrial control systems and other devices. It provides a standardized interface for data exchange and enables efficient communication between devices from different manufacturers. OPC-UA is often used in manufacturing, energy, and other industries that require industrial automation.

Each of these protocols has its own strengths and weaknesses, and the choice of the protocol will depend on the specific requirements of the application. The key factors to consider when selecting a protocol include the nature of the data being exchanged, the volume of data, the performance and security requirements, and the hardware and network constraints of the devices involved.

Books for software system designers and software developers


There are many books that software system designers could read to expand their knowledge and improve their skills. Here are some recommendations:

  1. "Designing Data-Intensive Applications" by Martin Kleppmann
  2. "Software Systems Architecture: Working with Stakeholders Using Viewpoints and Perspectives" by Nick Rozanski and Eoin Woods
  3. "Enterprise Integration Patterns: Designing, Building, and Deploying Messaging Solutions" by Gregor Hohpe and Bobby Woolf
  4. "Domain-Driven Design: Tackling Complexity in the Heart of Software" by Eric Evans
  5. "Building Microservices: Designing Fine-Grained Systems" by Sam Newman
  6. "Release It!: Design and Deploy Production-Ready Software" by Michael T. Nygard
  7. "Patterns of Enterprise Application Architecture" by Martin Fowler
  8. "The Art of Scalability: Scalable Web Architecture, Processes, and Organizations for the Modern Enterprise" by Martin L. Abbott and Michael T. Fisher
  9. "Scalability Rules: 50 Principles for Scaling Web Sites" by Martin L. Abbott and Michael T. Fisher
  10. "Clean Architecture: A Craftsman's Guide to Software Structure and Design" by Robert C. Martin

These books cover topics such as software architecture, system design, microservices, scalability, and domain-driven design. Reading these books can help software system designers create better systems that are scalable, maintainable, and resilient. However, it's important to remember that practical experience and testing are also important factors in creating successful software systems.


There are countless books that could benefit software developers, but here are some classics and newer releases that are widely recommended:

  1. "Clean Code: A Handbook of Agile Software Craftsmanship" by Robert C. Martin
  2. "Code Complete: A Practical Handbook of Software Construction" by Steve McConnell
  3. "The Pragmatic Programmer: From Journeyman to Master" by Andrew Hunt and David Thomas
  4. "Design Patterns: Elements of Reusable Object-Oriented Software" by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides
  5. "Refactoring: Improving the Design of Existing Code" by Martin Fowler
  6. "Effective Java" by Joshua Bloch
  7. "Cracking the Coding Interview: 189 Programming Questions and Solutions" by Gayle Laakmann McDowell
  8. "The Mythical Man-Month: Essays on Software Engineering" by Frederick P. Brooks Jr.
  9. "Working Effectively with Legacy Code" by Michael Feathers
  10. "The Clean Architecture: A Craftsman's Guide to Software Structure and Design" by Robert C. Martin

These books cover topics such as software design, coding practices, algorithms, testing, software engineering principles, and more. Keep in mind that while books are a valuable resource, they should not replace hands-on practice and experience.


Software architecture is a complex and challenging field, and there are many books that software architecture system designers could read to improve their skills and knowledge. Here are some recommended books:

  1. "Software Architecture in Practice" by Len Bass, Paul Clements, and Rick Kazman
  2. "Patterns of Enterprise Application Architecture" by Martin Fowler
  3. "Domain-Driven Design: Tackling Complexity in the Heart of Software" by Eric Evans
  4. "Building Microservices: Designing Fine-Grained Systems" by Sam Newman
  5. "Clean Architecture: A Craftsman's Guide to Software Structure and Design" by Robert C. Martin
  6. "The Art of Systems Architecting" by Mark W. Maier and Eberhardt Rechtin
  7. "Enterprise Integration Patterns: Designing, Building, and Deploying Messaging Solutions" by Gregor Hohpe and Bobby Woolf
  8. "Software Architecture Patterns" by Mark Richards
  9. "Just Enough Software Architecture: A Risk-Driven Approach" by George H. Fairbanks
  10. "The Tao of Microservices" by Richard Rodger

These books cover topics such as software architecture patterns, microservices, domain-driven design, integration patterns, and risk-driven design. Reading these books can help software architecture system designers create better systems that are scalable, maintainable, and resilient. However, it's important to remember that practical experience and testing are also important factors in creating successful software architecture systems.

Enterprise Software Engineering



Enterprise Software Engineering

Enterprise Software Engineering is a field of study that combines principles of Enterprise Engineering and Software Engineering to design, develop, and maintain complex software systems for large-scale organizations.

Enterprise Software Engineering involves the analysis of an organization's business processes and identifying opportunities for optimization and automation through software development. This requires an understanding of the organization's structure, goals, and processes, as well as the software development lifecycle.

Enterprise software engineering is a specialized area of software engineering that focuses on the development, maintenance, and scaling of software systems that support large-scale organizations or enterprises. If you're a software engineer interested in working in this field, here are some things you should know:

  1. Understanding business requirements: Enterprise software engineers should have a solid understanding of business requirements and how they translate into software requirements. This involves working closely with stakeholders and subject matter experts to gather and analyze requirements and ensure that the software meets the needs of the organization.

  2. Architecture and design: Enterprise software systems are often complex, with many interdependent components and services. As an enterprise software engineer, you should be comfortable with designing and implementing software architectures that are scalable, reliable, and maintainable.

  3. Integration and interoperability: Enterprise software systems often need to integrate with other systems and services within the organization. You should be familiar with technologies and techniques for integrating software systems, such as APIs, web services, and messaging systems.

  4. Security and compliance: Enterprise software systems often handle sensitive data and must comply with industry-specific regulations and standards. As a software engineer, you should be familiar with best practices for securing software systems and ensuring compliance with relevant regulations and standards.

  5. Testing and quality assurance: Enterprise software systems must be thoroughly tested to ensure that they are reliable, performant, and free of defects. You should be familiar with testing frameworks and techniques for enterprise software systems, including unit testing, integration testing, and performance testing.

  6. Agile methodologies: Many enterprise software development teams use agile methodologies, such as Scrum or Kanban, to manage their development process. As a software engineer, you should be familiar with these methodologies and be comfortable working in an agile environment.

  7. DevOps: DevOps practices, such as continuous integration and delivery, are increasingly important in enterprise software development. You should be familiar with DevOps tools and techniques and be comfortable working with infrastructure as code and containerization technologies.

Overall, enterprise software engineering requires a broad set of skills and knowledge beyond just writing code. It involves understanding the business requirements, designing and implementing scalable software architectures, integrating with other systems, ensuring security and compliance, testing and quality assurance, and working in an agile and DevOps environment.

Enterprise Software Engineering vs Software Engineering

The software systems developed by Enterprise Software Engineers are typically large-scale, complex, and mission-critical. They are designed to support the organization's operations and may integrate with other systems within the organization. As such, Enterprise Software Engineering requires a focus on scalability, reliability, and maintainability, as well as an understanding of best practices for software architecture, design patterns, and testing.

Software Engineering, on the other hand, is a broader field that encompasses the design, development, and maintenance of all types of software systems, not just those for large-scale organizations. While Enterprise Software Engineering requires an understanding of Enterprise Engineering principles, Software Engineering may focus on a variety of other factors, such as user experience, performance optimization, and security.

In summary, Enterprise Software Engineering is a specialized field within Software Engineering that combines principles of Enterprise Engineering with software development to create complex software systems for large-scale organizations. Software Engineering is a broader field that encompasses the design, development, and maintenance of all types of software systems.

LeetCode C++ Cheat Sheet June

🎯 Core Patterns & Representative Questions 1. Arrays & Hashing Two Sum – hash map → O(n) Contains Duplicate , Product of A...