Microservice | Resilience4J Retry Module Implementation With Spring Boot | JavaTechie

This tutorial will guide you how to use Resilience4j Retry module to reattempt failure call
In shorts As the Retry keyword indicates, if the user gets an unexpected response from the resource then automatically again hit the resource. We can limit the no of times to hit the resource, by doing little configuration in the development code.
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[@indirakumarpoongavanam9203]

Dear Brother - You are a real Techie. I spent close to 2 days to implement this Resilience 4J retry. With your Tutorial and GitHub, I was able to complete it just 20 mins. Kudos to You 👏👍😊

[@narendrasinghsisodiya4074]

You are awesome man. You are making developers life little easy.

[@girishrp9339]

Thank you so much for uploading this video.

[@nareshm-fj6it]

great

[@ShayaniDas]

Great video sir thank you so much. Excellent explanation

[@wwhill8033]

Another fantastic video, 🙏

[@gopisambasivarao5282]

Appreciate your efforts Basant, God Bless You...😊🙏

[@psudhakarreddy6548]

Thank you bro. Its very helpful for me 👍

[@ramareddy4391]

Its very good explanation sir ji

[@saravanakumara5602]

The Best Teaching.

[@balakrushnabehera1631]

amazing Bhai just amazing explanation

[@phanimc11211]

Excellent explanation,

[@JoyWithShorts]

Very Good Content ❤ Keep going buddy 🎉

[@andresweitzel.archivo3521]

Excellent explanation, I have seen that it is not common to work with paging in resilience, the question is, if you have some microservices applying paging... if I return a list or a String through the resilience endpoint... what would be the logic of use pagination...? ... the idea is to have a cleaner and safer code from the resilience service, but if I apply paging I am practically developing the same microservice that implements it....

[@sujitkumar2196]

Awesome Bro😀.

[@8921vaibhav]

@JavaTechie- if we have circuit breaker threshold and retry together . Does retry attempts will be counted as failures for changing the circuit from closed to half open?

[@unemployedcse3514]

Awesome 😍

[@aditinagda6609]

Is the retry blocking operation?

[@shwetabhat9981]

Great video sir . Really helpful in understanding concepts in one go . If possible could you make a video on jwt authentication in spring cloud gateway and how the access tokens are passed around in a microservice architecture .

[@Javatechie]

Hi shweta thanks. I will definitely do that once I tried this poc but not succeed that time but i will check once again

[@user-ef8th4kk3r]

​@@Javatechieif user service going to server down what type response we will get either 500 response or likewise resilience response? ।?

[@Javatechie]

No you can define your own fallback response

[@RaviVerma-bg6ul]

Sir, I need help, I need to deploy Redis server on PCF. Can you please make one video on that. I have clone your code redis code

[@susobhandas999]

Great video. Sir could you also make a video on rate limit using resilience4j?

[@Javatechie]

Yes will do that

[@atishayjain1141]

I am unable to use retry with circuit breaker together any reason?

[@sathiskumarp]

Thanks for the video. Both circuit breaker and retry methods are used for the fallback method if something happens to the actual service. I wanted to know when we need to use a circuit breaker or retry ? Any specific scenarios?

[@Javatechie]

Satish check the video again and find out the difference between these 2

[@sathiskumarp]

Let me check and get back to you

[@KISHANKUMAR-pr6ew]

In real time scenario we can't send default value as hard-coded manner so in that do we need to throw exception that catlog services is down ?

[@Javatechie]

No buddy we shouldn't return hardcode value we must need to return cached value .

[@dattasaimogudampalli]

Can you explain some more topics on Kafka streams focusing more on Kafka part explanation.

[@Javatechie]

It's already there please checkout below link kzbin.info/www/bejne/Z3rKp3mirqqDobs

[@sriharshaakurathi7568]

Hello, I have a doubt. Why do we need to use this approach when we have webclient? Webclient helps us to add a condition when it should perform the retry as well. Webclient is also a spring bean which can be used just by webflux dependency. Could help me understand this

[@Javatechie]

WebClient works on spring retry . Here resilience4J provide it's own retry module with fallback pattern

[@karthikeyanrm3446]

Would you take sometime to change Hystrix to Resilience 4j in your 2 hours Microservices course please ?

[@Javatechie]

Hi kartik , i believe it's not complex as i already explained here could you please try to include same in microservices example

[@DeepakGupta-hj2dv]

When are you upload starting react video? ?

[@Javatechie]

I really appreciate your interest . But I already mentioned I will start it in Feb so please wait for next few days . Let me complete one and start another Buddy

[@DeepakGupta-hj2dv]

@@Javatechie okk I am waiting

[@mdparwezalam3674]

Dear brother Same thing I have to implement in spring project. I follow same whatever you have teach but my case it's not working. Could you please suggest me ?

[@Javatechie]

Any error?

[@Alikhan-xb3zq]

Thanks to your video, I was able to implement the retry functionality and see it working But I dont see testcases doing retry. Is there a reason for that Please advise

[@Javatechie]

No i don't think there is some problem with retry

[@arunsinghrajpoot5363]

brother please make video on Log4j

[@Javatechie]

It's there buddy please filter it

[@harshverm776]

*Thanks Basant,* One Q - *What is the different b/w spring retry & resilience4j retry? Which is better along them?*

[@Javatechie]

Spring Retry and Resilience4j Retry are both libraries that provide support for retrying operations in a more resilient manner, but they have some differences: 1. **Framework Integration:** - **Spring Retry:** It is part of the larger Spring ecosystem and is tightly integrated with the Spring framework. It provides annotations and declarative configuration to enable retry logic. - **Resilience4j Retry:** While it can be used with any Java application, it is not specifically tied to the Spring framework. Resilience4j is designed to be more lightweight and modular, allowing you to choose the components you need. 2. **Configuration:** - **Spring Retry:** Configuration is often done using annotations or XML configuration within the Spring context. - **Resilience4j Retry:** Configuration is typically done programmatically using a fluent API, providing fine-grained control over retry behavior. 3. **Customization:** - **Spring Retry:** It provides a set of predefined annotations and aspects for retrying, but customization options might be more limited compared to Resilience4j. - **Resilience4j Retry:** It offers more flexibility and extensibility. You can create custom retry policies and customize various aspects of the retry mechanism. 4. **Features:** - **Spring Retry:** It has some additional features like support for stateful retries, where the state can be retained across retry attempts. - **Resilience4j Retry:** It provides a variety of retry strategies out of the box and allows you to combine them in a flexible way. 5. **Dependencies:** - **Spring Retry:** Being part of the Spring ecosystem, it may bring in additional dependencies related to the Spring framework. - **Resilience4j Retry:** It is designed to have minimal dependencies, making it more suitable for projects where lightweight libraries are preferred. In summary, the choice between Spring Retry and Resilience4j Retry depends on your project requirements, existing technology stack, and the level of customization and flexibility you need in your retry logic. If you're already using Spring and want seamless integration, Spring Retry might be a natural choice. If you prefer a standalone, modular library with more customization options, Resilience4j Retry could be a good fit.

[@harshverm776]

@@Javatechie Thanks buddy

[@girishanker3796]

​@@Javatechiegreat information

[@RN-jo8zt]

Can we use retry and circuit breaker together?

[@Javatechie]

Yes why not