Cons and Pros of Microservices
Published By - Kelsey Taylor

Benefits Microservices Architecture In Single Business Domain | HiTechNectar

What are Microservices?

In the current era of containerization and cloud computing, monolithic systems fail to meet the mark.

Software systems are growing in complexity these days. Building and maintaining monolithic systems is becoming increasingly difficult.

In a monolithic system, all the components of the system are designed and packed into one single unit. Any change to a single component would need the entire system to be redeployed. This makes it difficult to scale and less flexible as well.

Microservice architecture is a software development style that breaks the system down into smaller independent components. It is a collection of autonomous services designed around a single business domain.

These individual units are capable of handling one part of the functionality of the software.

But with any system/architecture, microservices, too, has its share of pros as well as cons.

Pros and Cons of Microservices

The benefits of microservices appear compelling enough to have persuaded some significant business giants, like Netflix, and Amazon, to adopt the approach. Although, Microservices may be a hot trend, but the architecture does have drawbacks. Following are some of the advantages and disadvantages of microservices.

Pros of Microservices

Implementing the microservice architecture simplifies the software development procedure. It also makes it easier to maintain the software in the long run. Here are some of the pros of using microservice architecture:

Scaling up becomes easier

In the microservices architecture, each service is designed, developed, and deployed independently. So, if one part of the software needs to be updated, we can update and use the microservice that handles that functionality.

Here in the entire system need not be taken down and deployed again. This enables a seamless update process and functioning of the software system.

Leads to Improved Fault Tolerance

Large applications that have multiple services installed within have better fault tolerance towards the failure of any one module.

Applications within microservices could continue working even if one service fails. This is because of the loose coupling between the services. Failure of one microservice does not affect the working of others.

Ease of understanding of the codebase of the software system

As one module has one responsibility encapsulated within, it becomes easier to understand the code base for that module.

It is easier to design a module keeping in mind the functionality of only that module. Understanding the specific functionality of each module is relatively more straightforward.

Gives you scope for experimenting with different technologies

Developers have the flexibility to experiment with different technologies while creating various services.

There are lesser technology dependencies between the modules. Rolling back to the previous iterations is less complicated.

Independent Deployment of each module

Since microservices are separate modules, they can be deployed independently in any application. If any module is modified, then the entire application need not be rebuilt and deployed.

Smaller codebases mean easier and quicker deployment. This is because there are lesser dependencies to take care of within the services.

Independent deployment of individual services also makes continuous deployment possible. Thus ensuring that the software stays updated for users at all times.


Also Read: 7 Benefits of Application Lifecycle Management


Cons of Microservices

As with any system, microservices have certain drawbacks as well. The cons are similar to the ones that are faced with distributed systems. The following are a few of the issues faced while adopting this architecture:

Increased Complexity of Communication Between the Services

Splitting an application into multiple smaller modules increases the communication overhead. Developers have to be extra cautious while handling requests between the different modules.

The way different systems communicate could vary, and there might be a need for an interpreter. This can increase the complexity of deploying the entire system at once.

Requires More Resources

With an increasing number of microservices, the resources needed to implement them increases as well.

Multiple databases and logs would need to be maintained. Transaction management between the services would increase the overhead of maintaining the records.

Global Testing and Debugging is Difficult

Testing a monolithic application is considerably simpler as compared to a microservice-based software. We just need to launch our app and ensure and test its connectivity with the underlying database.

With microservices-based applications, each service needs to be launched and tested individually first. Then the application as a whole needs to be tested again, once all the services are launched.

Not Practical for Small Applications

Microservices architecture is a good option for bigger applications. But, for smaller apps, it will probably be more time consuming and challenging to implement.

Relatively Complex Deployment

The deployment could be a complicated and challenging procedure. It would need coordination between multiple services during deployment. It would not be as simple as deploying a WAR file in a container.

All in all, we have a clear picture of microservices. Microservices have clear advantages over monolithic systems.

However, they do have some cons as well. The disadvantages are mainly based on how you are using it.

Microservices are apt for large applications that have heavy dependencies. Monolithic systems are still a better option for smaller, less complex, and easy to debug applications.

The bottom-line, microservices is the new development methodology. And it is something every developer must consider when designing the application architecture.

Benefits of Microservices

A monolithic application is broken down into its individual functions or services in a microservices application architecture. Developers rework the monolith after locating the various services to enable independent operation of each service as a distinct “microservice.” Following are the benefits of microservices.

  • Better compliance and data security.
  • Enhanced Business Agility and DevOps Support.
  • Agnostic toward programming languages and technologies.
  • More resilient applications and improved fault isolation.

FAQ’s

What is microservices and its advantages?
An architectural method for developing applications is using microservices. Because microservices are dispersed and loosely connected as an architectural framework, changes made by one team won’t affect the entire app. The advantage of employing microservices is that development teams may create new programme components quickly to match shifting business requirements.

What are the main advantages of using microservices?
Following are the main advantages of the microservices.

  • Microservices are discrete, self-contained deployment modules.
  • Comparatively speaking, scaling is less expensive than monolithic architecture.
  • Instead of updating the entire application, it is possible to modify or upgrade each service separately.
  • Less reliance and simple to test.

What are pros and cons of microservices?
Below are the microservices advantages and disadvantages.
Pros of microservices

  • Reduced costs and increased effectiveness
  • Enhanced Flexibility and Scalability
  • Simple to update and maintain.

Cons of microservices

  • For organisations that are not familiar working with microservices, complexity can be a significant barrier.
  • Although microservices are intended to be independent, they rely significantly on the network for communication. Increased network traffic and slower response times may arise from this.
  • Global Testing and Debugging Challenges

What are disadvantages of microservices?
  • All of the distributed system’s complexity are present in microservices.
  • The issue, such as load balancing and network delay, must be resolved by the developer.
  • Failure rates are higher when various services are communicating with one another.

What are the pros and cons of using microservices architecture?
The architecture of microservices has some pros and cons. Here are some of them.
Pros:

  • Flexibility in utilising various technology
  • Multiple services are created and delivered concurrently.
  • Makes sure that each service is secure
  • Supports single deployable units

Cons:

  • Increases the difficulty of troubleshooting
  • Maintaining transaction security is challenging
  • Coding challenges between services
  • Greater delay as a result of distance calls

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