Monolithic Architecture

Monolith means composed all in one piece. The Monolithic application describes a single-tiered software application in which different components combined into a single program from a single platform. Components can be:

Authorization — responsible for authorizing a user
Presentation — responsible for handling HTTP requests and responding with either HTML or JSON/XML (for web services APIs).
Business logic — the application’s business logic.
Database layer — data access objects responsible for accessing the database.
Application integration — integration with other services (e.g. via messaging or REST API). Or integration with any other Data sources.
Notification module — responsible for sending email notifications whenever needed.

Example for Monolithic Approach

Consider an example of Ecommerce application, that authorizes customer, takes an order, check products inventory, authorize payment and ships ordered products. This application consists of several components including e-Store User interface for customers (Store web view) along with some backend services to check products inventory, authorize and charge payments and shipping orders.

Image for post — Monolithic Architecture

Despite having different components/modules/services, the application is built and deployed as one Application for all platforms (i.e. desktop, mobile and tablet) using RDBMS as a data source. Benefits and Drawbacks of Monolithic Architecture.

1. Monolithic architecture

2. Layerd archtecture.

3. Virtual machine architecture

4. Exokernel architecture

5. Client server architecture

Micro kernel architecture

Benefits:

Simple to develop — At the beginning of a project it is much easier to go with Monolithic Architecture.
Simple to test. For example, you can implement end-to-end testing by simply launching the application and testing the UI with Selenium.
Simple to deploy. You have to copy the packaged application to a server.
Simple to scale horizontally by running multiple copies behind a load balancer.

Drawbacks:

Maintenance — If Application is too large and complex to understand entirely, it is challenging to make changes fast and correctly.
The size of the application can slow down the start-up time.
You must redeploy the entire application on each update.
Monolithic applications can also be challenging to scale when different modules have conflicting resource requirements.
Reliability — Bug in any module (e.g. memory leak) can potentially bring down the entire process. Moreover, since all instances of the application are identical, that bug impact the availability of the entire application
Regardless of how easy the initial stages may seem, Monolithic applications have difficulty to adopting new and advance technologies. Since changes in languages or frameworks affect an entire application, it requires efforts to thoroughly work with the app details, hence it is costly considering both time and efforts.

Comments

Time Sharing System and its Requirements

Time sharing system · Time sharing refers to the allocation of computer resources in a time dependent fashion to several program simultaneously · A time sharing system has many user terminals that are connected to same computer simultaneously. Using these terminal, different users can work on a system at the same time · Thus, it uses multi programming with a special CPU scheduling among all the last one, and then again beginning from the first one · In time sharing system, the CPU time is divided among all the users on schedule basis. · It release the CPU under any of the following three conditions: 1. When the allotted time slice expires. 2. ...

What is RAM and Why is it Important?

What is RAM and Why is it Important? Random access memory (RAM) is a computer's short-term memory. None of your programs, files, or Netflix streams would work without RAM, which is your computer’s working space. But what is RAM exactly? In this article, we explain what RAM means in computer terms and why it’s important. What does RAM stand for? RAM is short for “random access memory” and while it might sound mysterious, RAM is one of the most fundamental elements of computing. RAM is the super-fast and temporary data storage space that a computer needs to access right now or in the next few moments. What is RAM and Why is it Important? Random access memory (RAM) is a computer's short-term memory. None of your programs, files, or Netflix streams would work without RAM, which is your computer’s working space. But what is RAM exactly? In this article, we explain what RAM means in computer terms and why it’s important. What does RAM stand for? RAM is short for “random access memo...

Multi user Operating System

Multi user operating system · In a multi-user operating system, multiple number of user can access different resources of a computer at a same time. · The access is provided using a network that consists of various personal computer attached to a mainframe computer system. diagram of multi -user operating system · The various personal computer can send and receive information to mainframe computer system. · The example of multi-user OS are UNIX, windows 2000,novell netware. sing...

System structure operating architecture

System structure operating architecture An operating system is a construct that allows the user application programs to interact with the system hardware. Since the operating system is such a complex structure, it should be created with utmost care so it can be used and modified easily. An easy way to do this is to create the operating system in parts. Each of these parts should be well defined with clear inputs, outputs and functions. Simple Structure There are many operating systems that have a rather simple structure. These started as small systems and rapidly expanded much further than their scope. A common example of this is MS-DOS. It was designed simply for a niche amount for people. There was no indication that it would become so popular. An image to illustrate the structure of MS-DOS is as follows − It is better that operating systems have a modular structure, unlike MS-DOS. That would lead to greater control over the computer system and its various applications. T...

Multilevel Feedback queue scheduling (MFQ)

Multilevel Feedback queue scheduling (MFQ) · Multilevel feedback queue scheduling is an enhancement of multi-levelqueue scheduling. In this scheme, processes can move between the different queue · The various processes are separates in different queue on the basis of their CPU Burst Char characteristics · If a process consumes a lot of CPU time , it is placed into a lower priority queue. Thus I/O bound and interactive process are placed in the higher priority queue and CPU bound pricesses are in lower priority · If a processes waits too long in a lower priority queue it is moved higher priority queue. Such an aging prevents starvation. · The top priority queue is given smallest CPU time Quantum · ...

Easytolearn

Search This Blog