Microservices in 60 mins | Learning Path & Interview Preparation

In this video, We will learn about different design patterns and tools used in Microservices.

We also covered a popular microservices interview question :
Tell me about the tools and design patterns that you have used in microservices.

When it comes to Microservices , A developer is involved right from creating Microservices to deploying it cloud, hence understanding the each phase of the Microservices development is important.

Defining Microservices Boundaries
——————
When we create a Microservice, the first thing that we do is define the boundary of our Microservice (Bounded Context). For an example a sms-service should have sending sms related scope inside the project. It should not deal with the Payment processing stuffs inside the same project. That’s why defining the boundary for a Microservices plays a very important role, when it comes to maintainability of code.

Microservices Communication
————————
All our Microservices should communicate with each other. In order to make this communicate happen, we can use RESTful web services, Messaging service, Event streaming etc. Apache Artemis, Active MQ, Rabbit MQ, Kafka are some popular message brokers

Microservices Deployment
—————
Virtual machine might not be an Ideal solution for the Microservices deployment. Even Though VM’s are widely used in industry, But creating a VM is a tedious job as it involves a manual process of
1. Distribution or memory
2. OS installation
3. Library installation etc

As a Virtual Machine Involves an Operating System, It’s not fast to bootstrap and shutdown. So it doesn’t help much in a Microservices environment , where we need quick deployment of our Microservices when the load increases. We also need a autoscaling feature where we can automate our Microservices deployment. Here the Docker and kubernetes comes handy. We can replace our VM’s with container which doesn’t involve an OS and pretty fast in comparison to VM.

Microservices Design Patterns
———————————

Microservices Architecture helps us to split our huge monolith application to pieces and makes the developer life easy. But with this simplicity, there comes a lot of responsibility and challenges. To help us solve the challenges, We have proven design pattern.

1. With a handful of Microservices, We need to manage a lot of server where these Microservices are deployed. To manage these server ip’s we use a design pattern called service discovery and registration design pattern.
2. Our Microsrvices should be fault tolerant. To make our Microservices resilient, We use design patterns like Circuit breaker design pattern, Retry Pattern, Bulk Head pattern, Rate Limiter pattern etc.
3. To address cross cutting concerns like Security, Logging,Tracing; We use a design pattern called Gateway design pattern.
4. To Manage distributed Transaction, We use Saga design pattern.
5. There are other design patterns concepts like Load balance, DDD, CQRS, Event Driven etc which can helps boosting the performance of our Microservices application.

We have discussed all of these in this microservices roadmap video and you can use the timestamp to navigate to different microservices tool and design patterns KT.

Timestamp
------------------
Into - 00:00
monolith vs microservices - 01:38
What are microsrvices - 03:56
DDD / Define Microservices Boundaries - 05:04
Microservices Communication - REST API
Service Discovery & Registration pattern - 10:43
Message Brokers - 14:29
Event Streaming with Kafka - 17:51
Single Database per Microservices - 20:34
Microservices Deployment ( Docker & kubernetes ) - 22:19
What are Virtual Machine (VM) - 24:12
Load Balancer - 26:25
What are containers - 29:23
Virtual Machine Vs Container - 33:54
Distributed transaction in microservices- 33:44
Learn Saga Pattern - 41:07
The gateway pattern - 43:34
Handling Microservices Failure - 48:31
microservice resilience patterns - 49:33
The circuit breaker pattern - 51:49
Microservices free course - 57:09

microservices free course :

Microservices paid course :

For more free/paid courses visit

Watch my new mock interview series for java developers

Watch my new Hello spring boot series

Spring Framework course

Any time you are getting stuck with issues, Feel free to ask for support.

you can ping me on my Facebook page

Make sure to join my private Facebook page (Ask me here)
“SeleniumExpress - Support"

Follow me on Insta

[nameizdanny]

Highly underrated Old Youtube channel with great content, I request all to give him some growth in subscribers.

[saik]

I have taken paid course of abhilash, and I can confirm after learning spring from several sources, this is the best course that I have ever gone through. The course teaches from the basic spring core to spring mvc to spring jdbc to spring rest to hibernate to spring boot(currently here). The main thing that I liked with him is the way he explains and goes to the internals of everything rather than saying for sake. I am addicted to his course and I am binge watching these days. Spring security, the most complicated topic for me has been explained in a very interesting way knowing all the internals, even though if I am stuck anywhere, I now know how to get out of it.

[TrailOne-gotf]

Software Engineer life is so easy when we have source code like Abilash ☺.

[DeepanshMaurya-wi]

I have beens searching for microservice roadmap on YouTube and found nothing but today this video recommended on my feed don't know how
Thanks to god

[umeshpatil]

Your efforts are worth... by watching your videos from start to spring core to spring MVC to spring jdbc to security... I have cracked the interviews... thanks for making such important videos. many more videos are still in the watching process from my side... as I am not getting time.. but soon I will watch all these videos and I am sure I will crack another interview easily.

[manirathnam]

Probably the best insight and overview on Microservices on the internet.

[abhinavgunti]

The best end-to-end video on microservices that I've come across 👏

[KeerthanaPatnana]

No one can make me understand these type of concepts like you 🎉🎉❤❤

[babunabiswal]

You have been in a great role for making me a software developer. Thank you so much for teaching and giving me confidence in my work so far. I learned a lot from you.❤

[SreeniL-sd]

Thankyou for teaching simple and easyway
🙏

[Hari]

Great Explanation, please do more videos on design patterns.
Thanks alot

[usaamaizm]

I'm from Pakistan, and I learn a lot from you, and very very informative and interesting video. Thank you. ❤

[rabertthomas]

Thanks Abhilash . Very nice video with useful information .

[venkatesank]

When ever see your video not only my knowledge is improved also my confidence level is improve thank you for the your amazing efforts ❤️🙏

[BhagathKumarBorra]

A Good resource on microservices. Appreciated 👏🏻👏🏻👏🏻

[nameizdanny]

Brother introduction music is on fire 🔥🔥 but Request to don't keep background music while teaching, it's kind of disturbing while learning.

[jayjoshi]

Abhilash, your explanation till first half was awesome and theory wise, I was able to imagine all things in real as you showed pictures and explained them.
Can you please create an example of simple multiple microservices, then scaling them and working on containerization using Docker and Kubernetes ?
It will be a great help for all the learners including me.
Thank in advance!

[anishmathew]

Can you create playlist for docker and kubernates

[saziaperveen]

Amazing explanation by you, i have watched other videos on microservices but the details and presentation provided by you is awesome. Thanks for making such videos Now I feel like, to understand microservices these design pattern i should learn. Thanks a lot!.

[shefinthomas]

Good presentation, easy to understand all the concepts.