Originally published by Alex Barashkov at https://dev.to
The evolution of technologies has changed the way we build the architecture of applications. Docker, Cloud services, and Container Orchestration services brought us ability to develop distributed, more scalable, and reliable solutions. In this article, we will compare microservices and monolith architecture, discuss what teams and projects should use what type of architecture, and explore their advantages and disadvantages.
At a glance, the difference between those types can be illustrated like this
It is not strictly true that monolith apps are always simple, but microservices are often 10 times larger and almost always requires more resources.
Let’s discuss the pros and cons of each, point by point.
Monolith apps allow you to set your deployment once and then simply adjust it based on ongoing changes. At the same time, however, there is also only a single point of failure during deployment and, if everything goes wrong, you could break your entire project.
Microservices require much more work; you will need to deploy each microservice independently, worry about orchestration tools, and try to unify the format of your ci/cd pipelines to reduce the a amount of time required for doing it for each new microservice. There is a bright side, however; if something goes wrong, you will only break one small microservice, which is less problematic than the entire project. It’s also much easier to rollback one small microservices than and entire monolith app.
If you plan to use a microservices architecture, get a DevOps for your team and prepare yourself. Not every developer will be familiar with Docker or orchestration tools, such as Kubernetes, Docker Swarm, Mesosphere, or any similar tool that could help you to manage infrastructure with a lot of moving parts. Someone has to monitor and maintain the functioning state of your CI configuration for each microservice and the whole infrastructure.
Microservices architecture is the obvious winner here. Breaking one microservice affects only one part and causes issues for the clients that use it, but no one else. If, for example, you’re building a banking app and the microservice responsible for money withdrawal is down, this is definitely less serious than the whole app being forced to stop.
For scalability, microservices are again better suited. Monolith apps are hard to scale because, even if you run more workers, every worker will be on the single, whole project, an inefficient way of using resources. Worse, you may write your code in the way that would render it impossible to scale it horizontally, leaving only vertical scaling possible for your monolith app. With microservices, this is much easier. Resources can be used more carefully and allow you to scale only that parts that require more resources.
Cost is tricky to calculate because monolith architecture is cheaper in some scenarios, but not in others. For example, with the better scalability of microservices, you could set up an auto-scale and only pay for that when the volume of users really requires more resources. At the same time, to keep that infrastructure up and running you need a devops that needs to be paid. With a small monolith app, you could run on a $5-$20 host and turn on the snapshot. With a larger monolith app, you may host a very expensive instance because you can’t share it over multiple small, cheap hosts.
In one of our projects, we have 16 microservices and I could tell you from experience that this can be tricky to deal with it. The best way to deal with microservices is to build your docker-compose file from the beginning and develop through Docker. This helps you reduce the time spent onboarding new people; simply run the system from scratch and launch all microservices as needed. Opening 10+ terminal windows and executing commands to start each individual service is a pain.
On the other hand. when you develop one microservice, you may have a case in which you don’t need to run other parts of the application at all. This results in fewer problems with git conflicts due to the better process of breaking down tasks and the ability to isolate developers across microservices.
Doing code review and QA is simpler with microservices; you may even be able to write microservices in different languages.
Microservices that are smaller and with a proper architecture of microservices communication allow you to release new features faster by reducing QA time, build time, and tests execution time. Monolith apps have a lot of internal dependencies that could not be broken up. There is also a higher risk that something you are committed to could depend on unfinished changes from your team members, which could potentially postpone releases.
Use monolith architecture if you:
Keep in mind that if you find out that there is need of microservices in your project, monolith architecture always carries the risk of break down as a result of these small microservices.
Use microservices architecture if you:
Thanks for reading ❤
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#microservices #aws #cloud #serverless #devops
Companies need to be thinking long-term before even starting a software development project. These needs are solved at the level of architecture: business owners want to assure agility, scalability, and performance.
The top contenders for scalable solutions are serverless and microservices. Both architectures prioritize security but approach it in their own ways. Let’s take a look at how businesses can benefit from the adoption of serverless architecture vs microservices, examine their differences, advantages, and use cases.
#serverless #microservices #architecture #software-architecture #serverless-architecture #microservice-architecture #serverless-vs-microservices #hackernoon-top-story
The software industry has come a long journey and throughout this journey, Software Architecture has evolved a lot. Starting with 1-tier (Single-node), 2-tier (Client/ Server), 3-tier, and Distributed are some of the Software Architectural patterns we saw in this journey.
The majority of software companies are moving from Monolithic architecture to Microservices architecture, and Microservices architecture is taking over the software industry day-by-day. While monolithic architecture has many benefits, it also has so many shortcomings when catering to modern software development needs. With those shortcomings of monolithic architecture, it is very difficult to meet the demand of the modern-world software requirements and as a result, microservices architecture is taking control of the software development aggressively. The Microservices architecture enables us to deploy our applications more frequently, independently, and reliably meeting modern-day software application development requirements.
#microservice architecture #istio #microservice best practices #linkerd #microservice communication #microservice design #envoy proxy #kubernetes architecture #api gateways #service mesh architecture
**Microservices architecture **is a way of creating applications through loosely coupling services. Every service represents a system component that can be created and maintained separately, executing an independent business goal.
Microservices are basically small services that work independently as part of a more complex system. They are easy to manage, portable, and created in order to accomplish the business objectives of the application. They can be developed with the use of different programming languages, like Node.js, PHP, Python, Java, etc.
#knowledge #microservices #monolith architecture #monolith vs. microservices
We have been building software applications for many years using various tools, technologies, architectural patterns and best practices. It is evident that many software applications become large complex monolith over a period for various reasons. A monolith software application is like a large ball of spaghetti with criss-cross dependencies among its constituent modules. It becomes more complex to develop, deploy and maintain monoliths, constraining the agility and competitive advantages of development teams. Also, let us not undermine the challenge of clearing any sort of technical debt monoliths accumulate, as changing part of monolith code may have cascading impact of destabilizing a working software in production.
Over the years, architectural patterns such as Service Oriented Architecture (SOA) and Microservices have emerged as alternatives to Monoliths.
SOA was arguably the first architectural pattern aimed at solving the typical monolith issues by breaking down a large complex software application to sub-systems or “services”. All these services communicate over a common enterprise service bus (ESB). However, these sub-systems or services are actually mid-sized monoliths, as they share the same database. Also, more and more service-aware logic gets added to ESB and it becomes the single point of failure.
Microservice as an architectural pattern has gathered steam due to large scale adoption by companies like Amazon, Netflix, SoundCloud, Spotify etc. It breaks downs a large software application to a number of loosely coupled microservices. Each microservice is responsible for doing specific discrete tasks, can have its own database and can communicate with other microservices through Application Programming Interfaces (APIs) to solve a large complex business problem. Each microservice can be developed, deployed and maintained independently as long as it operates without breaching a well-defined set of APIs called contract to communicate with other microservices.
#microservice architecture #microservice #scaling #thought leadership #microservices build #microservice
Working in the software development industry, I often see articles on monolith pros and cons, microservices pros and cons, monolith vs. microservices, etc. — and much less often about the correct transitions between architectural approaches and their interactions. While projects can grow rapidly or dramatically change their course of development, you need to know when and what architectural approach will help support the system.
This article is for those for whom the monolith hasn’t solved problems and only aggravates all processes. It will also come in handy for those who are just getting acquainted with microservices. I will not say which is better, but I will share my experience of migrating from a monolithic to a microservice architecture.
#microservices #monolith #monolith architecture