Observability Done Right: Best Practices and Anti-Patterns for Effective System Monitoring

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  WHAT Observability is a concept that refers to the ability to gain insights into the behavior and performance of complex systems. In the context of software engineering, observability involves the collection, analysis, and visualization of data from software applications, infrastructure, and other components of a system. In the animal kingdom, observability plays a critical role in survival, allowing animals to monitor their surroundings, detect threats, and find food. Dolphins use echolocation to observe their surroundings. They emit high-frequency sounds that bounce off objects, allowing them to create a 3D map of their environment. Thanks for reading Knowledge Cafe! Subscribe for free to receive new posts and support my work. Subscribed WHY In today's era, architectures are becoming increasingly large, complex, and fast-paced due to the faster development and deployment of software by distributed teams with the help of DevOps, continuous delivery, and agile development methodo...

Object-Oriented Design and Functional Decomposition: A Look at Two Software Design Methodologies

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Object-oriented design

Object-oriented design is a software design approach that is based on the concept of “objects”, which represent data and the functions that operate on that data. In an object-oriented system, objects are created from templates called “classes”, which define the properties and behaviors of objects. Objects can interact with one another through the use of methods, which are functions associated with a particular object.

The steps involved in object-oriented design are as follows:

  1. Identify the problem to be solved
  2. Identify the objects in the system
  3. Define the relationships between objects
  4. Define the interface for each object
  5. Document the design

Sample Object Oriented design of Library Management System.

Library Management System OO Design

Functional Decomposition Design

Functional decomposition is a design methodology that involves breaking a system down into smaller, more manageable components or functions based on the ways in which they contribute to the overall system.

Steps to do functional Decomposition

  1. Identify the system or process to be decomposed
  2. Identify the high-level functions of the system
  3. Decompose each high-level function into more detailed sub-functions
  4. Repeat the decomposition process for each sub-function
  5. Define the interfaces between functions
  6. Document the functional decomposition

Sample Functional Decomposition of Library Management system

Sample Design Library Management System using functional Decomposition

Conclusion

functional decomposition can be a useful technique for discovering and organising requirements in the early stages of a project. However, it is important to remember that functional decomposition alone is not a sufficient design methodology. While it can help to identify the individual tasks or functions that a system needs to perform, it does not provide much guidance on how those functions should be implemented or organised.

It is worth considering multiple design methodology fusion during different phases of project implementation as well as non-functional requirements while doing design like maintainability, performance and security.

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