Implement CQRS Design Pattern with SpringBoot

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Based on architectural principles, such as Domain-Driven Design (DDD) and Command-Query Responsibility Separation (CQRS), Axon Framework provides the building blocks that CQRS requires and helps to create scalable and extensible applications while maintaining application consistency in distributed systems.
Github Link: github.com/sha...
Axon Download Page: axoniq.io/down...
Event Sourcing: axoniq.io/reso...
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Опубликовано:

29 сен 2024

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Комментарии : 165

@DailyCodeBuffer 3 года назад

Follow me on Twitter: twitter.com/DailyCodeBuffer

@KIRANNARAYANA100 2 года назад

Can you please provide a full length video on service mesh implementation of microservices. we are waiting for that video from long back. It would be very beneficial for many developers if you do so as your explanation looks crystal clear. Hope to see the video very soon...

@sdash2023 Год назад

Why did you make it with Axon instead of Kafka ? Is there any specific reason ?

@Phani.B13 3 месяца назад

Excellent way of explaining the concept... Found very helpful. Thanks a lot 😊

@DailyCodeBuffer 3 месяца назад

Glad it was helpful!

@arghyamitra3281 2 года назад

Great tutorial ... Sir can you please make event driven architecture with kafka please

@hamedabbaszadeh7536 Год назад

Greate video, thanks. but i've a question what happens if we have two databaes, one for read another for write. what we should do about data consistency? you didn't seprarate the databases and i think the whole idea is separaing them

@hendisantika 2 года назад

Why exception is occur? And why the new data is not insert into DB after We handle the exception?

@tranvanthao2193 Год назад

hi sir. I have error when run programe. Can you help me -> Connecting to AxonServer node [localhost:8124] failed.io.grpc.StatusRuntimeException: UNAVAILABLE

@shubhamjumde9076 2 года назад

Also, can we have video series where we implement Microservices communication with ActiveMQ. This time , let's take more than 3-4 Microservices.

@vvendan340 2 года назад

awesome viedo CQRS

@Scoty98 2 года назад

Thanks for tutorial. Do you think about Full in depth Spring Security. Would be awesome.

@mohammadfahim796 2 года назад

Bro your content is awesome just do 1 favour. Arrange all the video in playlist. we have to find those

@amarjeetnayak7098 2 года назад

The objective of cqrs is to segregate the read and write db, also important things to be note to sync the read db with write db, but in this video this part is missing, as its the crucial part of this pattern.

@updownftw 2 года назад

Maybe when we are saving the product, we can send another copy to a message queue, and from the message queue, the query microservice will fetch and store it in the database. This is just my thought, I don't know how they actually do it in the industry.

@deeproy2719 2 года назад

yes this comment can be pinned and the solution is there in the reply by @updownftw_

@presteena 2 года назад

@suresh kumar Could you please provide video url?

@reynasebasti3635 Год назад

What r tools or frameworks, to synch data between read n write dbs? so data / system could b consistent

@aakashkhatavkar7877 Год назад

I really dont understand purpose of Axon Framework here. What I understood is you are dividing one microservice into 2 parts one is command and another is query. Command Part will handle PUT/POST/DELETE request and Query part will handle GET request. As command part will store data in Database and through Events It will store in Axon Server and while fetching Data also you are fetching data first from Database and putting it in Axon classes and sending response. Why cant responses be send directly ?? If I want to fetch join queries then eventually I have to query DB for that then how does Axon is really helping here. Also for READ / Write you are using same DB instance. It's creating so much of confusion here

@rajubhattarai3326 Год назад

exactly my point. He is using same DB. He hasn't used seperate DB for Read and Write. Need to have Seperate DB for Read and Write..and that need to be synced tooo. but while getting data..he is querying from the same database.

@koloyolo7629 10 месяцев назад

For everyone who get error "Parameter 0 of constructor in command.api.controller.ProductCommandController required a bean of type 'org.axonframework.commandhandling.gateway.CommandGateway' that could not be found." This is compatibility issue between axon and spring boot, consider downgrading spring boot version to 2.7.x

@reactaws6603 2 года назад

Hi Shabbir , My question is , where you have imolemented fault tolerance and you haven't stored events in any database as eventstore using eventsourcing repo. if any thing fails in future we can use fail safe mechanism and we come over data losss scenarion in real world . if our events willl be persisted with db event store . i can see its available with axon server but what if we rebounced axon server then we lose the data,i have tried this. can you use rdbms to use as event store. you explanantion was really cool just add above point in your CQRS video.

@updownftw 2 года назад

Hi Shabbir, thank you for the video. But I have one question, the CQRS example you took is sharing the same database. Isn't the whole point of CQRS is to make the applications loosely coupled? How do I connect my command and query databases and make sure they are in sync? Can we achieve it by sending the product object to a message queue and then having the query microservice listen to it and thus save it in its own database? This is just my thought process, I don't know how exactly they do it in the industry.

@syedzishan3676 2 года назад

If we are updating read_db via an event or message then essentially we are performing write operation on it 🤨, then how it is any different than having a single db ? 😅 If i am to guess there must be some db replication in affect here via axon server which he forgot to explain or so , anyway if you have found a way for it please reply to this thread . I am looking for solutions 🙏🏼

@rakshithvp1877 2 года назад

Hundreds of Spring boot developer would be in need of this video. Thanks man 😊

@DailyCodeBuffer 2 года назад

Thank you 🙏

@dikshaagarwal5598 Год назад

Hi DailyCodeBuffer , easy explanation and setup ,but I have one doubt here we still are not able to segregate writeDB and readDB , and this seems to be the important point to be considered for CQRS, As of now , data is getting stored to and being read from sameDB

@ArunSingh-ql3tf Год назад

Actually, H2 database is the read store which Query Model is using to query in. EventStore is your writeDB where events are stored in the order they are sent. EventHandler is responsible for providing event consistency to the H2 database (your readDB).

@arunbhati101 2 года назад

This is clean and to the point example of CQRS. You are awesome.

@DailyCodeBuffer 2 года назад

Glad that you have enjoyed 🙏

@ashokkumar-cx6of 2 месяца назад

Hi, Same code I’m implementing but CommandGateway bean is not creating . I tried to create bean using configuration but no luck . How can I resolve this issue ?

@meryemOuyouss2002 2 месяца назад

Please what about java 17 ,I have problem but I don't how to fix it, is it because of the version used or what????

@focus15624 2 года назад

@EventHandler and @QueryHandler is not working in your project in my machine. Command side is ok.

@PhoenixRisingFromAshes471 11 месяцев назад

whats the difference between kafka and axon.Why we are not using kafka....Please explain

@aminetech4582 Год назад

Thank you for this awesome tuto But the most important thing on CQSR is to seperate databases But I see that you did not explain how to do so !

@acchutdevkule7841 2 года назад

Please make video on activemq with realtime example

@Pest87 Год назад

Great video, thanks. What would be the optimal way to avoid here the copying of the product properties between the different classes?

@ngantran-id4gq 8 месяцев назад

Can you answer me pls? why we need to update the properties in aggregate?

@sergioruyenator 2 года назад

Bro, just advice. Stop said "Awyeah", this make many things confuse.

@DailyCodeBuffer 2 года назад

Thanks for the feedback. I am working on speech improvement 🙏

@anthonya880 2 года назад

Is CQRS commonly used in Spring Boot Microservice projects ? Please answer anyone.

@DailyCodeBuffer 2 года назад

It is used at many places

@luongbich3223 2 года назад

please make a tutorial about gRPC!

@mahgsvtshh5444 2 года назад

Can you make video on ELK , junit5 ?

@SatishKumar-yi8qi 2 года назад

Can we create command api and query api has separate microservices if so the event handler and event sourcing will work or any special mechanism we need to incorporate to send data to query api from command api..

@DailyCodeBuffer 2 года назад

We can do easily using Axon server

@SatishKumar-yi8qi 2 года назад

@@DailyCodeBuffer the application you built is not using axon server then. Iam totally confused. The application you built suppose I separate command and query api as separate microservices will they work

@ramosespann6496 Год назад

Consider defining a bean of type 'org.axonframework.commandhandling.gateway.CommandGateway' in your configuration. ??

@darvin3665 2 года назад

Axon Server or Kafka?

@DailyCodeBuffer 2 года назад

Axon server

@ambatipudimanjunath1829 Год назад

Parameter 0 of constructor in com.example.command.api.controller.ProductCommandController required a bean of type 'org.axonframework.commandhandling.gateway.CommandGateway' that could not be found. getting this error can you please help

@AmitSingh-qd2vn Год назад

Can provide a link to this PPT?

@kanakarajuadari401 Год назад

After created the Command Controller and running the project i am getting below error: Parameter 0 of constructor in com.demo.ProductService.command.api.controller.ProductCommandController required a bean of type 'org.axonframework.commandhandling.gateway.CommandGateway' that could not be found. Action: Consider defining a bean of type 'org.axonframework.commandhandling.gateway.CommandGateway' in your configuration. Any suggestions here

@listener-000 Год назад

after exception I get this log messages: " TrackingEventProcessor : Releasing claim on token and preparing for retry in TrackingEventProcessor : Released claim " and what does it mean?

@HungPhan-bt7nq Год назад

Thank for great example implement CQRS pattern. When I run project. In database, it generate 4 tables: saga_entry, token_entry, association_value_entry and product. How 3 tables: saga_entry, token_entry, association_value_entry generate? Thank you!

@hawkeyefighter8826 2 года назад

I followed the same code.. i faced error - "Error creating bean with name 'entityManagerFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?" >Can anyone please help?

@Lets_explore51 2 месяца назад

Very useful video. Thanks for the content..

@DailyCodeBuffer 2 месяца назад

Thanks 🙏

@reynasebasti3635 Год назад

Can u pls make video with kafka, what do u think? N also video how to have consistency between reads n writes with segregated dbs how would u r update read DB after writes in write DB??

@krishnamurthysuripka6774 2 года назад

Excellent Explanation bro.. keep it up..

@DailyCodeBuffer 2 года назад

Thanks 🙏

@ayushdedhia25 3 года назад

After a long time 😅😀

@fbsouza 10 месяцев назад

You broke "Dry" so much 😢

@Chauhannitin 2 года назад

Noticed that you have copied the model properties across multiple layers, transforming/passing from one to another layers. Do we really need all these layers ? Can't it be made more simple ?

@patrykgrudzienkodey1220 2 года назад

Having watched this tutorial, I'll never use the word "particular" (:

@IvanRandomDude 2 года назад

What is your Idea theme? Colors look great

@DailyCodeBuffer 2 года назад

Xcode 12 dark

@nareshk329 2 года назад

can you please share the google doc link for CQRS design pattern PPT.

@Sanchitgoel10 2 года назад

We could have used autowired for dependency injection right? like you are manually injecting it by creating constructors any reason for that?

@DailyCodeBuffer 2 года назад

That is recommended way

@Sanchitgoel10 2 года назад

@@DailyCodeBuffer Thanks for the reply. I am also getting the following error after running till the commands api part - Error creating bean with name 'entityManagerFactory': Requested bean is currently in creation. Any idea why this is the case or any suggestions how to debug in such case.

@DailyCodeBuffer 2 года назад

Don’t know by looking at it, l’ll check and respond here back

@Sanchitgoel10 2 года назад

Okay Thank you so much

@sumitsharma-xk6ig 2 года назад

@@Sanchitgoel10 is your issue is resolved? because i am getting the same.

@priyankakande3427 2 года назад

Very good example and explanation I understanded basic concept How to use patch mapping in application I am unable do that

@reynasebasti3635 Год назад

What r tools or frameworks, to synch data between read n write dbs? so data / system could b consistent

@mandhakarthik Год назад

Please share CURD tutorial using axon framework

@noturbiz4670 2 года назад

Isn't the event store supposed to be the main data repository and you query by replaying events and re-creating the state ?

@charithjayasekara5252 2 года назад

In this flow isn't the event generated before the actual product is generated?

@updownftw 2 года назад

Hi Shabbir, I tried creating different Service for the query, the events created in Command service is not being handled by event handlers at Query Service. What am I doing wrong ?

@DailyCodeBuffer 2 года назад

Can you please share the Github link so I can check

@updownftw 2 года назад

@@DailyCodeBuffer Is this the correct way? Example: I'd publish an ProductCreatedEvent in the command service, and then I'll have an @EventSourcingHandler in the same microservice, but the @EventHandler would be in the query microservice. Or do I need the @EventSourcingHandler in the query micorservice as well ?

@updownftw 2 года назад

@@DailyCodeBuffer I actually already deleted the Query microservice and implement your way.

@DailyCodeBuffer 2 года назад

Event handler and event sourcing handler should be in one service

@updownftw 2 года назад

@@DailyCodeBuffer so Do I need to create the same aggregate in query service and have the event handler there ?

@murugesh1915 2 года назад

how to handle Transactional Management of save to write DB and save to read DB here?

@nicholasmaundu2130 Год назад

Good job sir, was working CQRS but i really struggled am well informed now

@benjsoft 2 года назад

Next time,. please do not speak too fast :D It looks like you are in a race :D

@armannizar3302 Год назад

can anyone know how to add configurations and which one we want to add for this project

@MinhTran-yb3ec 2 года назад

please make a tutorial about report service in microservice..thanks in advance

@johnthompson1007 2 года назад

Hey man.. u have to stop keep saying “OVER HERE”…;).. if you count that word in entire video.. that would come around 50+ times…

@DailyCodeBuffer 2 года назад

Yes 👍 Working in to improve in that Thank you so much for the feedback 🙏🏻 Keep Supporting

@indreshmahor8293 2 года назад

Bro your hands-on are great, but tooo much "OVER HERE" in your videos... Kindly please delete those from your dictionary, at some point of time it becomes irritating

@DailyCodeBuffer 2 года назад

Thanks Indresh. Working on that part to be better.🙏

@syedzishan3676 2 года назад

Can you share a video on data replication betn read_db and write_db and how to achieve it ?

@devaamujuri5998 3 года назад

Nice tutorial. by the by which theme that you are using :-)

@DeepakGupta-hj2dv 3 года назад

Please make on video Spring core crash course

@pawsdev Год назад

Thats great !!

@weixiangng8279 2 года назад

@Daily Code Buffer, Hi I want to ask is this CQRS part of Eventuate Tram? I am doing a spring boot program for Eventuate Tram and wondering if your video has some relations to it. If I use Eclipse and Postgres database that would be fine right?

@DailyCodeBuffer 2 года назад

This implementation of CQRS is using Axon framework

@shubhamjumde9076 2 года назад

Hi, This is helpful video. Can we have any video series for Consul and Vault with Microservices and Spring Boot please.

@TheVishal38 2 года назад

Excellent explanation 👍

@DailyCodeBuffer 2 года назад

Thanks 🙏

@ranjaninatarajasharma5917 Год назад

You have earned a subscriber... thanks a lot for all gr8. Videos

@DailyCodeBuffer Год назад

Thanks 🙏

@soniaengr Год назад

So informative and so well explained each and every component with example . This is one of the best videos on cqrs. I have implemented spring boot with rest api can u pls explain in detail how and in how many ways microservices communicate with each other - synchronous/ asynchronous thanks !

@DailyCodeBuffer Год назад

Thanks 🙏🏻 Both part of Micro services are also covered in separate videos

@pablourbanohernandezvizcarra Год назад

Thanks for the great video

@adityagupta4218 2 года назад

Bhyia i just want to talk something as personal could you please tell me how can i reach you

@DailyCodeBuffer 2 года назад

Ping me on Twitter or LinkedIn

@kumarm2885 2 года назад

Excellent explanation sir thanks for for your efforts keep going.

@DailyCodeBuffer 2 года назад

Thanks 🙏🏻

@747r7 2 года назад

Good starter !. For running docker image of axon : docker run -d --name axonserver -p 8024:8024 -p 8124:8124 axoniq/axonserver

@KehindeAdeoya 2 года назад

You've really tried. Your tutorial seems the best because of its simplicity. Do you have the full CRUD of this tutorial?

@mandhakarthik Год назад

please share the full curd tutorial

@kirankumarmovva9115 2 года назад

All videos are very good and hit straight to the point without wasting the time. I like it all.

@DailyCodeBuffer 2 года назад

Thanks 🙏

@mdgufrankhan4306 2 года назад

Excellent video. Keep going.

@malicious8909 2 года назад

R2DBC tutorial next pleaseeee, thank you you're awesome

@DailyCodeBuffer 2 года назад

Glad you enjoyed

@camzpras3435 Год назад

How to delete using CRQS?

@sonalnarayankar8015 2 года назад

can you share code of this project

@DailyCodeBuffer 2 года назад

Link in the description

@akhileshshende273 Год назад

Excellent !!

@nikhileshyoutube4924 3 года назад

Bro make a video on java learning path as backend junior developer

@DailyCodeBuffer 3 года назад

I will plan for it

@nikhileshyoutube4924 3 года назад

@@DailyCodeBuffer thx bro 🙏🏻🙏🏻

@faizan346 2 года назад

@@DailyCodeBuffer please do that. Also explain how you approach new topics and master them.

@prajjwallaad 3 года назад

Which keyboard do you use bro? 😬

@DailyCodeBuffer 3 года назад

Keychron K2

@shahidgheti1692 2 года назад

Rock start............ great Explanation

@DailyCodeBuffer 2 года назад

Thanks buddy 🙏🏻

@nadimmatoussi8772 Год назад

Thanks!

@reancode2755 2 года назад

Really great content ❤, thanks

@DailyCodeBuffer 2 года назад

Thanks 🙏🏻

@mustafa52z 3 года назад

Luckily Im working with cqrs in my project

@DailyCodeBuffer 3 года назад

Great. Hope you enjoy the tutorial. If you are using anything new in your project, I would love to learn that as well. Please Share if possible 🙏

@mukundagaddam 2 года назад

Can you do support , if required ?

@mustafa52z 2 года назад

@@DailyCodeBuffer sure bro

@mustafa52z 2 года назад

@@mukundagaddam what support you need?

@azharmobeen 2 года назад

Hi, thanks for sharing but could you please why we need and when we need SQRS ?

@darvin3665 2 года назад

Crack!! Thanks.....

@DailyCodeBuffer 2 года назад

Thanks 🙏🏻

@souvikpatra2737 2 года назад

Amazing just wow...

@DailyCodeBuffer 2 года назад

Thanks 🙏

@felipefranco- 3 года назад

You're amazing!!! 🤩😍

@DailyCodeBuffer 3 года назад

Thank you 🙏

@koolkravi 2 года назад

Goon one.

@DailyCodeBuffer 2 года назад

Thanks 🙏

@fabricioaraujo7642 3 года назад

great content !!

@DailyCodeBuffer 3 года назад

Thanks 🙏

@nitishvk8598 3 года назад

Superb

@DailyCodeBuffer 3 года назад

Thanks 🙏

@SatyendraSingh-ov1de 2 года назад

Hi, In end you said we can propogate the error from event handler to controller. Please help us with reference to understand how its done

@murilobarbosa5062 3 месяца назад

Did you find out how?

@nalcow Год назад

great content man, you have a great sense to get right to the point. Making easier learning.

@DailyCodeBuffer Год назад

Thanks 🙏🏻

@youtubegarbage4u 3 года назад

i believe you use OBS studio for recording but what do you use for editing your videos?

@DailyCodeBuffer 3 года назад

Final cut pro

@youtubegarbage4u 3 года назад

@@DailyCodeBuffer doesnt that make file sizes way too big?

@DailyCodeBuffer 3 года назад

That depends on the export settings