In this approach, called a monolith, the entire application is built as one large, solid unit. Every feature and piece of data lives together in a single package.

The Giant Single App

This approach, known as microservices, breaks a big application into a collection of small, independent programs. Each small program handles just one specific task, like processing a payment or sending an email.

Team of Mini Apps

A monolith is like a giant backpack where all your gear is thrown into one large pocket. It is easy to carry one bag, but finding a specific item can be messy as the bag gets fuller.

The Single Backpack Analogy

Microservices are like a food court where different stalls specialize in different cuisines. If the pizza stall closes for repairs, you can still buy a burger from the stall next door.

The Food Court Analogy

Monoliths are usually much quicker to build when a project is just starting. Since everything is in one place, developers don't have to worry about how different parts will talk to each other.

Starting Fast and Simple

Microservices are better for huge companies with hundreds of workers. Different teams can work on different small apps at the same time without stepping on each other's toes.

Growing Without the Mess

In a monolith, a single tiny error in the code can crash the entire website. Because everything is connected, a problem in the 'search' bar could break the 'checkout' button too.

The One-Mistake Crash

In a microservice setup, if the 'recommendations' part of the app breaks, the rest of the site stays online. This makes the overall system more reliable for users.

Keeping Problems Isolated

If your app's login page gets very busy, microservices allow you to add more power specifically to that one piece. In a monolith, you would have to pay to power up the entire giant application.

Scaling the Busy Parts

Microservices use 'APIs,' which are like digital messengers, to share information. They send simple requests to each other over the internet to get the data they need.

Apps Talking to Apps

Microservices allow teams to use the best programming language for each specific job. One part of the app might use a tool that is great for math, while another uses one that is great for speed.

Picking Different Tools

While microservices are flexible, they are much harder to manage and set up. It is like the difference between managing one large restaurant and managing a dozen tiny food trucks.

The Complexity Trade-off

Updating a monolith requires replacing the whole application every time you make a change. This can be risky and time-consuming because you have to test everything all over again.

Releasing One Big Update

With microservices, you can update just the 'login' service without touching anything else. This allows companies to release new features or fixes multiple times a day.

Updating One Small Piece

Small startups usually start with a monolith for speed and simplicity. They only switch to microservices when their app becomes too big and complex for one team to handle.

What is Scaling?