Resilience4j Tutorial with Spring Boot | Circuit Breaker, Retry, Rate Limiter

In this tutorial, we will implement Resilience4j with Spring boot and different modules available for it. We will see the theory part and also implement Circuit Breaker, Rate Limiter and Retry modules of Resilience4j in the Spring boot application.
🗒 Project Source Code: github.com/shabbirdwd53/resil...
Resilience4j Doc:
resilience4j.readme.io/docs/g...
📚Course Content📚
⌚ (00:00) Introduction & What we will Build
⌚ (00:52) Why Resilience4j?
⌚ (03:21) Understanding different modules
⌚ (08:13) Creating Project and implementing API's
⌚ (16:18) Adding Circuit Breaker
⌚ (26:16) Adding Retry mechanism
⌚ (30:22) Adding Rate Limiter module
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#Resilience4j #RateLimiter #CircuitBreaker #Retry #DailyCodeBuffer

[@mvs69]

Great i was looking for this :)

[@slycreator]

The first thing I do always before watching is to Like the video.Thanks alot

[@DailyCodeBuffer]

Thanks 🙏🏻

[@tejassontakke8382]

Thanks. One of the underrated channel. Much to appreciate for content on this channel.

[@DailyCodeBuffer]

Thanks 🙏🏻

[@vanamutt43]

your tutorials are absolutely legendary, mate.
trying to become a spring boot developer and ive learned so much from you.
thanks again

[@DailyCodeBuffer]

Thanks 🙏

[@COOLKIDD63]

Thanks. Feels so easy looking at your videos.

[@DailyCodeBuffer]

Thanks 🙏🏻

[@nirmaltripathy3226]

All the videos posted by you brother is really amazing and of highest quality. We are getting so much knowledge from your tutorials. God bless you.

[@DailyCodeBuffer]

Thank you so much 😊

[@thongtech1984]

You are just amazing person, thank you so much for this such crystal clear explanation and tutorial. God bless you my friend. Keep doing your awesome job and help our Java community.

[@karimdjaafar5822]

Great piece of Tutorial ! Thanks for the job,
Karim

[@DailyCodeBuffer]

Thank Karim for supporting

[@raghuvardhansaripalli9636]

simple and cute video like you. Thank you . God bless you !!!

[@anupamdey4893]

This is exactly what I had requested in your earlier microservices (with hystrix) video. Thanks a lot !!!

[@DailyCodeBuffer]

Hope it would be helpful 🙏🏻

[@AbhishekSingh-pu6dg]

Hey Anupam,
Are you able to use Resilience4j with spring-cloud-gateway??
I am getting errors and Can't get the cloud gateway running.

[@omongecalvince4701]

This great can't wait to implement this. Thanks so much bro

[@DailyCodeBuffer]

Thanks 🙏🏻

[@Sanchitgoel10]

Thank you for this absolute masterpiece of a session, would love to learn about Bulkhead as well. Thanks

[@DailyCodeBuffer]

Thanks 🙏🏻
Planning on it

[@manojkumar8358]

@@DailyCodeBuffer Please tell on how to add junit test case for fallback method

[@rohitn6333]

thanks a lot bro, very very nice explanation

[@rahulvaish3034]

Thanks a lot for posting this amazing tutorial.

[@DailyCodeBuffer]

Thanks 🙏🏻

[@faixan13]

best tutorial , your efforts are appreciated !

[@DailyCodeBuffer]

Thanks 🙏🏻

[@yogeshchaudhary621]

Once again, awesome content by you Shabbir.

[@DailyCodeBuffer]

Thanks 🙏🏻

[@chandan07talreja]

Amazing content. Thank you bro!!!!

[@DailyCodeBuffer]

Thanks 🙏🏻

[@phanimc11211]

as usual very resourceful

[@DailyCodeBuffer]

Thanks 🙏🏻

[@hemkantgangurde8071]

Great content, very thoughtful as hystrix is depricated

[@DailyCodeBuffer]

Thanks 🙏🏻

[@kevinm.1597]

Thank you for this tutorial

[@DailyCodeBuffer]

Thanks 🙏🏻

[@maneshpunde2509]

Hey ,
I am always waiting for your vedios. Your vedio are so grateful.

[@DailyCodeBuffer]

Thanks 🙏🏻

[@sureshpal5569]

thank for making such wonderful videos for every contents ,

[@DailyCodeBuffer]

It's my pleasure

[@itshgirish]

Implemented in User/Dep microservice, worked just neat, thanks again 👏

[@abhay6333]

Hii can you share me file please

[@abhay6333]

Hii can you share me file please

[@sanskrutiekale8759]

Hi can you share your file please @itshgirish

[@sureshpal5569]

great contents

[@azharmobeen]

Thanks brother. Please it up 👍👍

[@DailyCodeBuffer]

Thanks 🙏🏻

[@rahulrajsaini24888]

again a very good video.. Thank you Sir .. God bless you .. keep teaching us !!!

[@DailyCodeBuffer]

Thanks 🙏🏻

[@dellikbabu81]

Excellent explanation of circuit breaker

[@DailyCodeBuffer]

Thanks 🙏🏻

[@samisekharchakraborty7839]

Very helpful to the point explanation of the topic

[@DailyCodeBuffer]

Thank you so much 😊

[@udaykumar-xz8li]

awesome content Waiting for Bulkhead

[@rajeevraushanprasad4320]

Awesome 😎

[@DailyCodeBuffer]

Thanks 🙏🏻

[@srinivasareddy162]

Your videos are great starting point for me. Awesome job.
I started practicing Microservices with your video "Microservices using SpringBoot | Full Example" and then got stuck with hystrix dependency not getting supported for resiliency4j from spring intializer. Then I'm able to quickly get to this video.

[@DailyCodeBuffer]

You can check Resilience 4j video
Hystrix is not supposed is newer versions

[@abhay6333]

Hi Srinivasa can you please share me your file of the project which you done I'm not able to do resilience 4j for a department project of Microservice

[@shyamagrawal3047]

Excellent Work .. Thanks a lot dear

[@DailyCodeBuffer]

🙏🏻🙏🏻

[@eleanorlim3661]

Hi sir, your explanation is really good and clear for me as a beginner. Will always learn from you! Btw can you do a video with the application of resilience4j in real life applications like giving client to enter password for 3 times, if failed lastly have to wait for 1 min and close the circuit again.. something like this. I will really appreciate to learn from you!

[@devaanandhan3771]

The way u r explaining is Top Notch bro

[@DailyCodeBuffer]

Thanks 🙏🏻

[@mohammedimaz3879]

Quality content

[@DailyCodeBuffer]

Thanks 🙏🏻

[@gulshannayak5458]

thank you

[@DailyCodeBuffer]

🙏🏻🙏🏻

[@ashifismail9606]

Thanks for the great tutorials, can u please make some good tutorials on reactive programming
using spring reactive or akka

[@pollitocapitalista2257]

nice...good bro

[@DailyCodeBuffer]

Thanks 🙏🏻

[@danishakh]

Amazing videos man! Can you do one on TimeLimiter too please?

[@chetanrana7778]

Thanks, could you also make tutorials on Low Level Design Topics like Design parking Lot, Vending Machine etc..

[@user-dt9nn6ri9s]

спасибо бро

[@pragmaticcoder6910]

Please create a video on Bulkhead, Cache and Time Limiter modules as well :)

[@OdiaMadBiker]

Great content bro...one doubt..if we have angular as ui with boot microservices...which is the best place to integrate resilience4j...is it in api gateway..??

[@manojkumar8358]

Please tell on how to add junit test case for fallback method

[@hemanthkumarakshintala1126]

Please make a video on centralized configuration and load balancing using consul

[@rexsam3134]

What happens to the old Hystrix which cannot be removed? Also need to test on boot 3.1.5 with Jdk 17

[@bcfreitastube]

how about security? When i'm using Resilience4j Circuit Breaker i got auth problems, because the requests whan circuit breaker is on are going without auth token.

[@GharMeGhusKeBarBarMaro]

Hi , Quick question , in your complete Spring boot micro service you were implementing Circuit breaker at API gate way level but here you are implementing at individual micro service level. Is this how it differs in the implementation or it can be implemented at API Gate way level also , I am completely new to Spring and Micro service using Spring boot.

[@mobilegames1872]

can we use all 3 together for one service/method.

[@rishabhjoshi3092]

In the old application u did with hysterix can i do that project with resiliance using this video?

[@sanchitbatra4431]

Hi Shabbir ,
Yaar when should we go with having a bean and when should we go with just configuring directly in application.yml?
Like in general
What diffrence does it make if we make a bean / or if we directly configure that in application.yml?

[@denisentanas.brahmana6411]

how to implement CircuitBreaker from api-gateway using resiliance4j dependency?

[@lathav7222]

Hi
Can you please add an example with sliding-window-type as TIME_BASED?
And how to add a property to set the time
(If the service is taking too long then circuit should break )
Kind of maximum allowed time for each request = 18s like that
Is there any property in circuit breaker ?
Also can we combine circuit breaker + timelimiter ? Is that possible ?

[@pawankrishna8918]

can we add Resiliance4J circuit breaker in API cloud-Gateway?? or i should add CB only to services ?

[@krunalsoni574]

Hat's off to Coding Guru🤝

[@DailyCodeBuffer]

Not a Guru, Just average developer sharing what I have been learning
Thank you brother for the support 🙏🏻🙏🏻

[@swarupcodes]

This was much awaited coz Hysterix was deprecated

[@DailyCodeBuffer]

🙏🏻

[@harshitsachdeva4836]

How did u import 2 projects in same intellij window?

[@GauravSharma-wb9se]

Why do we need aop dependency ?

[@adkk1996]

Thank you for the updation but one thing in the new versions we don't have the hystrix dashboard also as dependency so there is any other alternative for the dashboard.

[@DailyCodeBuffer]

Working on the newer versions

[@MrUnixShell]

Good video man, clear content, I have one question, what is the theme you are using on your intellij?

[@DailyCodeBuffer]

Xcode Dark

[@MrUnixShell]

@@DailyCodeBuffer Thnks man!

[@manideepneela8629]

Hi one doubt
What are the consequences or issues if we do not use circuit breaker. What happens if we use only resilience4j retry.
I mean if service A is calling service B and if it got any exception it will try for number of attemps as we declared and if it is not succeed it will call fallback.
Any consequences if we do not use circuit breaker here??

[@cloudtechlearn9622]

Can Circuit Breaker be only called from Controller, can't it be called from Service classes.? My fallbackMethods gets called while i define in Controller , it doesn;t get called from Service Class

[@victormartinez624]

Excelent material, thanks. Can i implement the circuit braker pattern in the api gateway?. For example in the api gateway that you do in your microservices video. so if i can do that, then i have only one implementation for the circuitbraker for all of my APIs, Tkanks again!

[@simmy565]

Same doubt i have and looking for it in...dint find in any videos

[@muhammadarshad574]

@ make a video on circuit breaker testing bez the way you explain the stuff is awesome

[@DailyCodeBuffer]

Thanks 🙏🏻

[@thongtech1984]

Hi my friend, what is the name of icons you are using?

[@GovindKumar-ds9iz]

Hi Sir,
Can you please do it in API-Gateway yml file like your first mycroservice ,
When i configuring in API-Gateway it "name CercuteBracker not found"

[@kokomoko2539]

Perfect because I was following the Microservices example and Hystrix became deprecated

[@saravanaprabhuragupathi6128]

Please add a video on Bulkhead and other features too

[@rohitkf8474]

How did you learn about all these things on SPRING BOOT ?
Love your explanation. Simple and understandable :)
Please do a complete SPRING BOOT course. I'm sure it's gonna go through the roof !!!

[@DailyCodeBuffer]

Thank you so much ☺️
I have already done a complete course on Spring boot. You can chock on the channel

[@DeepakGupta-pz4fx]

Thank you Shabbir. Please make one video Spring MVC Crash Course and Java crash course

[@xlayman38]

Looks like timeout duration is not part of ratelimiter. Can you please take another look

[@velospeartechnologies6284]

I am hooked up to your basic example of User and Department, would really appreciate it if you would have taken the old application and made changes to that at the end of the video.
Thanks in advance!

[@rishabhjoshi3092]

did you use resiliance with that project ? did it work ?

[@AbhishekSingh-pu6dg]

@@rishabhjoshi3092 I am trying to do that and it's not working. :(

[@abhay6333]

Hi anyone did implementation

[@just_exploring]

Do we use Zuul with Resilience4j ?

[@swapnilahire2310]

How do we use Resilience4j with API Gateway

[@gauravsuhane7296]

Kindly create video on 2/3 microservices those are secured (jwt) and communication happens using API gateway so authentication and authorisation can be explained in detail among microservices

[@gauravsuhane7296]

Kindly confirm if we can see tutorial soon?

[@DailyCodeBuffer]

Planning on it. It won’t be soon, coz it takes time to create content on the complex topics

[@simplifiedjava1978]

@@DailyCodeBuffer , yes it is well understood that it would take time, but it would be extremely helpful content to all your subscribers. Thanks a ton for all your content which contains great knowledge with simple explanation. :-)

[@usamaiqbal9933]

plz make a video series on Threading in a real time example.

[@entertainmentsongs4527]

❤️

[@DailyCodeBuffer]

💕

[@barnabastyav3575]

i watched the microservice toturial you posted sometime in 2020 where you used the hystrix circuit breaker and i felt it would have been nice if you go back to refactor the code and used the resilience4j instead ,i am having a hard time trying to.

[@sanskrutiekale8759]

Hi did u figer it out the implementation please help me

[@kunalsharma-zc2ho]

please make vedio on bulkhead , timelimiter and cache implementations part.

[@kacperkujawa213]

Why is AOP needed?

[@monikaramadoss5984]

Why we need AOP dependency here?

[@AbhishekSingh-pu6dg]

Hey Shabbir,
I am getting issues in implementing this Resilience4j to spring-cloud-gateway in your old microservices tutorial.
Could you please create a video with explanation in spring cloud gateway for the same?

[@abhay6333]

Hii did u get a solution for This please share your file

[@soldandrei-alexandru5193]

Hello again, I also wanted to do the switch from Hystrix to Resilience4j but I would like to implement it within the API Gateway so it would be configured in only one place and it could cover all the microservices. Do you have any advices here?

[@abhay6333]

Did u implemented in your project of Microservice

[@rahuldebnath3919]

I have a CustomException and i want circuit breaker to ignore it and for that i tried both ignoreExceptions and ignore-exceptions property in yml file, but when the exception occures circuit breaker calling fallback method. How to overcome this?

[@cascito]

Same here bro , can you provide the solution if you have solved it.

[@akashjain3254]

@GetMapping("test")
@CircuitBreaker(name="normal",fallbackMethod="fallbackNormal")
public String getNormal()
{
List li = new ArrayList();
return li.get(2);
}

public String fallbackNormal(NullPointerException e)
{
System.out.println("exception thrown");
return "fall back called";
}
in my case , fall back method is not being called, instead exception is getting caught by normal process, please help me

[@sushantkumar2631]

Brother please make a video on use of multipartfile in rest API .......

[@DeepakGupta-pz4fx]

Can you make a video on Spring MVC crash course

[@SudheerSable-xz1zc]

Hi brother can you do one quick session Integration of Resielence4j with API Gateway using YML file in spring boot exapmle

[@komalrathi6948]

I dont know where I went wrong. ServiceB is not getting called from A, i keep getting msg displayed from fallback method only.

[@komalrathi6948]

both applications are up with 8080 and 8081 ports

[@ricardorqr]

Can we use Retry and CircuitBreakr together? Should both implement fallbackMethod?

[@DailyCodeBuffer]

We can use both together

[@nikantchaudhary]

Bro please make a detailed video on feign client implementation.

[@DailyCodeBuffer]

Planning on it👍

[@Jhonfreddy15]

I had problems with the retry module. I changed the wait duration from 10s to just integers 10000, then worked, tried 3 times then threw a Connection exception. :( xD

[@egonsaks]

Great turtorial! What's the theme of intellij?

[@DailyCodeBuffer]

Xcode dark 🌑

[@egonsaks]

@@DailyCodeBuffer Thank you :)

[@PraveenK-zj4zz]

I have seen a lot of videos but no one teaches us to configure this through the java code.

[@aamirshayanshaikh2728]

Please make video on bulkhead

[@DailyCodeBuffer]

Planning on it

[@krishnagupta2706]

Hi, gone through your video, can you help me to configure Resilience4j with API gateway'

[@krishnagupta2706]

Please ignore my above comment, worked out on it, thanks, your videos are awesome

[@abhay6333]

Hi bro can you share me the file of your project I'm not able to implement resillnce

[@jashwithajashu2689]

Can you please help with order of videos, as I am a beginner and new to spring and micro service's

[@DailyCodeBuffer]

Sure, follow Spring Masterclass playlist in the order

[@jashwithajashu2689]

Thank you, I can see there is another playlist with spring boot. When can I watch that if i am beginner?

[@manognajoshik8465]

Hi Shabbir, can you also make video on bulkhead?

[@DailyCodeBuffer]

Planning on it

[@logic_master950]

Brother, we love your videos. If someone likes your video, no matter how long your videos are, still going to watch it. Please do not rush through the course. It looks like you are trying you reduce the length of your video, and you are speaking too fast. It is sometimes hard to catch for slow learners. I learned a lot from your tutorials. Peace out brother. God bless.

[@DailyCodeBuffer]

Thanks Brother
I will keep this in mind and try to improve
These suggestions really help me a lot🙏🏻🙏🏻

[@logic_master950]

Thanks a lot brother much love for you. I see your videos almost everyday. ❤️❤️❤️❤️❤️❤️

[@DailyCodeBuffer]

🙏🏻❤️

[@amarnathkumar2564]

Minimum numbers of calls in not clear 😭