Open In App

Monolithic Architecture

The monolithic operating system is a very simple operating system where the kernel directly controls device management, memory management, file management, and process management. All of the system’s resources are accessible to the kernel. Every part of the operating system is contained within the kernel in monolithic systems. Monolithic architecture-based operating systems were initially introduced in the 1970s.

The monolithic kernel is another name for the monolithic operating system. This is an outdated operating system that banks employ for menial jobs like time-sharing and batch processing. All hardware components are managed by the monolithic kernel, which functions as a virtual machine.

Unlike a microkernel, which has fewer tasks, it is not the same. The two sections of a microkernel are called kernel space and user space. IPC (inter-process communication) is the means by which both components speak with one another. One benefit of microkernel is that in the event of a failure, the other server assumes control.

What is Monolithic Architecture?

In a monolithic architecture, the operating system kernel is designed to provide all operating system services, including memory management, process scheduling, device drivers, and file systems, in a single, large binary. This means that all code runs in kernel space, with no separation between kernel and user-level processes.

The main advantage of a monolithic architecture is that it can provide high performance, since system calls can be made directly to the kernel without the overhead of message passing between user-level processes. Additionally, the design is simpler, since all operating system services are provided by a single binary.

However, there are also some disadvantages to a monolithic architecture. One major disadvantage is that it can lead to a less secure and less stable operating system. Since all code runs in kernel space, any vulnerabilities or bugs in the kernel can potentially affect the entire system. Additionally, if a user-level process crashes, it can bring down the entire system, since there is no separation between kernel and user-level processes.

Monolithic Architecture

Two basic instances of monolithic operating systems are DOS and CP/M. Operating systems that share a single address space with applications are DOS and CP/M.

Characteristics of Monolithic Architecture

Example of Monolithic Architecture

Before Learning Microservices, we always know why we do not use Monolithic architecture nowadays. So that it will help us to understand the Microservices more clearly. Monolithic Architecture is like a big container, wherein all the software components of an app are assembled and tightly coupled, i.e., each component fully depends on each other. Example: Let’s take an example of an e-commerce site- As you can see in the example all the services provided by the application (Customer Services, Cost Services, Product Services) are directly connected. So if we want to change in code or something we have to change in all the services as well.

Advantages of Monolithic Architecture

Below are some advantages of Monolithic Architecture.

Overall, a monolithic architecture provides high performance, simplicity, and broad hardware support. It is ideal for general-purpose operating systems that require a high degree of performance and low overhead. However, it may come with some trade-offs in terms of security, stability, and flexibility.

Disadvantages of Monolithic Architecture

Below are some disadvantages of Architecture.

Frequently Asked Questions on Monolithic Architecture – FAQs

What is microkernel?

An operating system can be implemented using a microkernel, a sort of kernel that offers low-level address space management, thread management, and interprocess communication.

What is Monolithic Kernel?

In operating systems, a monolithic kernel is one in which the kernel space stores the whole operating system.

What is Modular Monolithic Systems?

Executable modules can be dynamically loaded and unloaded at runtime by most modern monolithic operating systems and modular operating systems, including Linux, BSD, AIX, OS-9 OpenVMS, and MULTICS.

Article Tags :