Pros Sam Newman in Building Microservices, enumerates the key benefits of Microservices as following: Technology Heterogeneity With a system composed of multiple, collaborating services, we can decide to use different technologies inside each one. This allows us to pick the right tool for each job, rather than having to select a more standardized, one-size-fits-all approach … Read more
How can I setup something like eureka.client.serviceUri? You have to have a Kubernetes service on top of the eureka pods/deployments which then will provide you a referable IP address and port number. And then use that referable address to look up the Eureka service, instead of “8761”. To address further question about HA configuration of … Read more
You can make the communication between microservices secure atleast by following two methodologies : JWt token : Let assume micro service A wants to communicate with micro service B, then the token issued by A and the audience of the token is B. In that case the token is signed by micro service A with … Read more
Websockets A websocket connection opened by a client must eventually connect to a websocket server. API Gateway The job of the API gateway is to accept an incoming websocket connection from a client and correctly route it to a websocket server. An API gateway will redirect ALL data sent from a client websocket to the … Read more
Use docker login command. (Official doc) Enter your credentials, and then you can pull private image, only if you have an access. If you want to login to a self-hosted registry you can specify this by adding the server name. docker login localhost:8080 Thanks to @herm’s comment, if you want to use swarm, use : … Read more
You’ll have to make a call to each microservice and do the join manually or pass in the relevant user ids to each service. UserMicroservice: SELECT * FROM Users WHERE some condition is true Get list of Users back including their ids. ProductMicroserivce: SELECT * FROM Products WHERE some condition is true AND userId IN … Read more
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You can have your CI build and push images for each service you want to run, and have the production environment run all 3 containers. Then, your production docker-compose.yml would look like this: lb: image: nginx depends_on: – rails – express ports: 80:80 rails: image: yourorg/railsapp express: image: yourorg/expressapp Be noted that docker-compose isn’t recommended … Read more
The commenters are right – there are some subjective definitions at play here. But there are some principles and concepts that can help reason about the different approaches. Conway’s Law It’s not strictly the original definition, but I think the distinction can be better understood with reference to Conway’s Law: Any organization that designs a … Read more