Building an API Gateway in Java with Spring Cloud Gateway

[@AntonioCabralNumberOne]

Beware! At the time of my post (February 2024) when you pick the "gateway" dependency, the artifact that comes with it is the "spring-cloud-starter-gateway-mvc" which will not work if you follow Dan's tutorial. If things start to fail and you don't know why, that's because of it. The correct artifact is the spring-cloud-starter-gateway and comes when you pick in the Spring Initializr the "Reactive Gateway". I have no idea why the change.

[@coma.n]

OMG! thanks!

[@twinklegarg1413]

will this is tutorial enough to do load balancing also ? as i am not able to balance load among multiple instances of same application by this.

[@buhaha_bharathSurya]

thanks

[@tomiiglesias5109]

tysm!

[@rickw7738]

Thanks, spend many hours trying to figure out what I did wrong in my project..

[@vidzhere5027]

Dan , I must tell you, the way you teach & guide , you are pure joy to those , who learn from your videos. Thank you for all the good work you are doing, to name one, you are making world more equal :)

[@DanVega]

I have to tell you I was having a little bit of a tough day over here and you just changed it. Thank you for the kind words and for making my day!

[@ilkou]

I love the idea of showing how to browse documentations, Spring docs are actually simple and on point. one suggestion is to label (split) the video sections so people can skip parts that are familiar with maybe 🤔 Love your content 👌

[@cesarvalencia6191]

great video as always. Can you do a video on how to authenticate jwt using api gateway.

[@kaly7dev4873]

Wonderful video. Thanks Dan for sharing!

[@WaldoRochow]

Thanks for the introduction Dan. It seems like a good application of this would be an API wrapper where one might add value to the response of the 3rd party API.

[@kajalkukreja694]

Awesome explanation..very helpful 👍

[@kuyedoluwamu1812]

You are a blessing !!!

[@karthikravisankar5608]

Thanks for the detailed info, could you please do a video on spring cloud function

[@helmigandi]

Thank you for the tutorial. I learn something new in every your videos. I am curious about how to add security. If clients want to access posts, albums, photos, and todos, they must get valid accessToken first.😅

[@lakshmanankanthi7158]

Hi Dan, Thank you for the great tutorial. Could you please share the excalidraw drawing? Thanks

[@SeungwonLeee-h2d]

Very helpful! May I ask which theme you’re using for IntelliJ? Looks so elegant

[@victorcousin8059]

Thanks for the cloud .

[@muhammadawais7212]

Hi! I have a question. You didn't run the microservices on the gateway to test. why? Secondly, I want to ask can we use gateway without a service registry?

[@idouxda]

Can you secure the Gateway with OAuth2 client credentials grant flow using Keycloak?

[@at5.53]

Hi Dan, thanks. Can you share your excalidraw diagrams?

[@rafaelvaccaro3900]

I need to ask, where did u get this shirt, nike and spring, AMAZING!!!

[@julianzapata1295]

Hi there! Dou you have a guide to implement Authenticantion and Authorization through JWT to access Microservices, using Spring API Gateway?. Thanks a lot for the video.

[@otvertka7070]

Thank you!!!!❤❤❤❤

[@jeffreyanderson6593]

Great video, could you please share the excalidraw diagram you created? I was not able to find it under resources or on excalidraw. Thanks!

[@bachphamvan9398]

Thanks for sharing! btw which IDE are you using

[@santhoshbhatti]

Hey Dan, I don't see any documentation on stomp security with Oauth2/ oidc for stomp applications behind a spring cloud api gateway. I am specifically speaking about token relay with stomp messages.

[@abhijit-sarkar]

Can we configure common route properties such as prefixPath and addResponseHeader in one place instead of duplicating it for each route (19:25)?

[@hesik3461]

I would say that in this particular situation, it's redundant due to little common logic and little amount of routes. But obviously, you could and should extract common logic in cases, where amount of routes is considerably large or even dynamic Avoiding duplication is not always a necessary thing, especially when it's so insignificant

[@tanyasamyal2347]

Hey, Like you added response header but before forwarding the request can we add a username header?

[@sachin.tandon]

Hi, I have a Spring BFF, that has a Circuit Breaker. But I've also put the Spring BFF in an AWS Auto-scaling Group. How can I get the circuit breakers in each bff instance to share a common state, e.g. in Redis, so that the state across each one is not inconsistent?

[@manuonda]

Thank Dan for the video ! . I have a question about security. In spring spring gateway can be incorporated ?

[@AlmustaphaTukurUmar]

thanks for sharing the video is super helpful, but it seams like the client APIs can be accessed directly without using gateway can you adda some security authentication and authorization using spring security and jwt thanks.

[@sg71093]

How to configure routes to use https in uri ? Can you provide code fragment ?

[@OnePointLander]

Would SCG be used in the situation where you want to make multiple api calls and return a composite response?

[@dmytroshmidt5981]

Thank you

[@shahabetminan]

Thanks a lot!

[@ronrpan]

In AWS EKS, how this Spring cloud gateway pattern works?

[@Harikumar-r7g]

How can we add multiple uri's paths in spring cloud gateway in application.properties instead of yaml file. could you please replyme on this....

[@Nothing_Else_Matters]

Greate video thanks.. is it possible to deploy a spring-cloud into a tomcat web server?

[@DanVega]

Absolutely. This is just another Spring Boot Application so the normal rules for deployment apply here.

[@Nothing_Else_Matters]

@@DanVega I took your example from git, but i couldn't manage to activate to route directives. If i extend from SpringBootServeltInitializer i got an exception in tomcat and with using web.xml i had the same issue.

[@rajkumarsjc]

I am loading my routes from database... How do I reload the routes dynamically..

[@akvus]

Great video. Please use some normal font. These hand-written like fonts are hard to read.

[@mayanksharma1491]

Can you do video on okta verification using spring boot

[@Saravanan-lj9so]

Hi ,Dan, I have requirement to call Rest API from API gateway then modification response and call another REST API , then send response back to client. Is it possible ?

[@bercilinjose6896]

What's the backup plan if the api gateway goes down??

[@abdallahalabed6850]

Hello dan , does this work on springboot 3.1.4 ? I do the same configuration but i get 404 error

[@NahueAlberti]

Can someone help me? I'm using spring-cloud-starter-gateway-mvc then i have problems with multiple paths in predicates. how can i this resolve?

[@AntonioCabralNumberOne]

remove the-mvc part and it'll work. Don't forget to reload Maven. Somehow in "spring initializr" the spring-cloud-starter-gateway comes when you pick the "Reactive Gateway" instead of just "Gateway". The thing I hate most about Spring is that things change all the time and tutorials with a couple of months get obsolete real quick. :(

[@navjotsingh2457]

Cool

[@r-rtz]

why not nginx ?

[@shahinrajaei1666]

it was not really good what you say is not deep tutorials like what i learn in javabrain