What are microservices? 6 outstanding applications of Microservices

Monolithic software development will cause businesses to consume a lot of resources when repairing and upgrading software. How to reduce resources and resources when upgrading and repairing software? Microservices is the solution for businesses. So, what are Microservices? What are the benefits of microservices?

Learn about Microservices
What are microservices?
Microservices architecture is also commonly referred to as Microservices . This is an architectural style that brings together many different subservices linked into a larger block.

For example in the picture is a Microservice model. However, in reality, each software will have a way to develop its own Microservice model, as well as have many different variations and do not have a common model to make a framework.

You can understand that, a large application will be divided into many small applications called Microservices and they are deployed to be able to run independently of each other from: source code, data and operation. Microservices do not communicate directly with each other, but through the API gateway.

What are the benefits of developing applications under Microservices?
Simple deployment: you can easily deploy small modules and not affect other services.
Easy to understand: when broken down into many small modules, the functions of the module will be clearer, the code easier to understand and easier to debug.
Reusability: each module is a separate function, so you can reuse it for many different projects.
Easy fault detection: when the service system is down, you can easily find out which module fails and fix it faster. For example, if the payment fails, you just need to find the payment module and edit it.
Limit changes: when new technology or new programming language is applied, you can change each small module to limit the risk of change.
Advantages and disadvantages of Microservices
Advantages of Microservices
Only a small team is enough to develop a Microservice application
Can build software in many different languages
Easy integration and automated deployment with open source software
Developers can easily apply new technology to the application
Helping coders to develop and exploit services independently
Easy to modify and upgrade with small modules, clear functions
If a module fails, you can "quarantine" the faulty module to edit and the application will still work normally.

Disadvantages of Microservices
Nothing is perfect, Microservices have a lot of disadvantages that make you pay attention such as:

Since service blocks are developed separately, they become distributed making testing more difficult.
The large number of modules means that the connection volume between modules becomes huge
Microservices architecture will make software complex, reduce fault tolerance time, increase network latency, and difficult to handle load balancing.
With many different modules, if the architecture is not divided correctly, it will lead to the same function
If a task spans multiple modules and fails, editing becomes complicated as there are multiple development departments involved in that module.
Developers must optimize communication between modules
As the volume of services and modules increases, the complexity of the software will also increase
6 characteristics of Microservices
Multiple Components – many components
Of course, the outstanding feature of Microservices is definitely the fact that this architecture divides a large piece of software into many different small service modules. These modules can be deployed separately and independently of each other, and then use APIs to connect these modules.

Repairing a small component, a module will be simpler and less expensive than repairing a giant monolithic software.

Built For Business – Built for business
Microservice architecture will be built and developed with priority and suitable for the business. If the software with traditional monolithic architecture will not have a focus such as: database, technology or user interface, etc.

Microservices will create a separate software for you. When you build a software on Microservice architecture, you will develop and use it yourself because this is the product that suits you best.

Simple Routing – Simple Routing
Sometimes a little "neck" will bring the most optimal. Microservices work pretty much like a UNIX system: take requests, process them, and return the results accordingly. Therefore, it can be said that Microservices have information pipelines to the terminal and apply smarter logic.

Decentralized – Decentralized
Microservices involve many different technologies and platforms. Therefore, the old style of centralized architecture and governance is not the optimal way. With decentralized management, developers can build tools to debug each module and share/resell it to the community/developers to handle the same error. Because each module only owns and manages their own data.

Failure Resistant
Microservices architecture is developed to optimize debugging and limit failure. If there is a module or a service that crashes unexpectedly for any reason, you can more easily spot where the error is because each module has a certain function. With that, you can fix bugs faster and other modules are not affected,

Ultimately, Microservices are an architecture to look to the future. You are designing a module, service at the present time with a technology A. Then you can continuously "evolve" your service, module to even advanced technology B, C or D. more when your technology background and human resources are enough to meet.

Applications of Microservices
Application to large web service systems
Microservices can operate independently of each other, so developers can extend software and extend functionality without affecting other services.

Currently, there are cloud service providers that optimally support Microservices such as: AWS, Azure.

Build Native App Apps
Developers can focus on a few Microservices without worrying too much about others. This will speed up software development and get to market quickly.

Design and build Web API
Microservices help improve performance for groups of processors instead of a common application. This advantage will increase the security level for the overall software.

Extensible development and integration with IoT module
Microservices allow developers to close the gap between language and technology. Developers can use many different programming languages ​​and technologies in the same product.

Here, Tino Group has brought you a lot of useful knowledge to answer your questions about what Microservices are. Hopefully this information will help you to some extent on your software development path. Tino Group wishes you always success and luck.

The article references content from: microservices.io, SmartBear, VIBLO, TopDev,...

Frequently asked questions about Microservices
What is Monolith Application?
Monolith Application or application built in monolithic architecture. These are simple applications that are easy to implement. You just need to build the application with all the modules in a single block.

However, when developing many functions, this architecture will reveal many major inadequacies and disadvantages such as:

Consumption of resources: to upgrade a module, you will have to deploy the entire code because the application is a unified block.
Difficult to apply new technology to the project
Testing and debugging will become a "nightmare"
What are the worrying disadvantages of Microservices?
It takes a lot of money to hire a good software architect
Cost for security, separate connection for each module
The management process will become complicated
Securing connectivity will be more difficult than the Monolith architecture.
Should I use Monolith or Microservices?
Microservice architecture will be suitable for enterprises building large software and need to invest to develop many modules for the future. Monolith architecture will be suitable for small, micro projects to avoid unnecessary complexity.

Should you hire a software architect?
The answer will depend on the size of your software project, of your business. If your project doesn't develop much in the future, hiring a software architect can be a waste of resources.

On the contrary, for a business with a long-term development path in the future, hiring a professional software architect will help the business have a better and more efficient software.

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