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What happens if a Microservice is down?
When any one of the microservice is down, Interaction between services becomes very critical as isolation of failure, resilience and fault tolerance are some of key characteristics for any microservice based architecture.
To be able to do extensive application-specific authorization checks, authorization should be handled in the specific microservices. This can be done by passing along the JWT with the request. In this way, application-specific authorization for domain objects won’t be leaked to the API gateway.
How does authentication work in microservices?
Stateless authentication stores the user session on the client-side. A cryptographic algorithm signs the user session to ensure the session data’s integrity and authority. Each time the client requests a resource from the server, the server is responsible for verifying the token claims sent as a cookie.
How do you restart a microservice?
Restarting microservices
- If your microservice runs as a Windows service (true if you used installService.
- In the list of services, find the microservice you want to restart, one of the following:
- Right-click the item and from the context menu that opens, select Restart.
How do I know if microservice is running?
A first way is to gather the data that your system or service is generating as it is running, representing its internal state. These are collected from log files, metrics and counters from interfaces, application traces, code instrumentation, etc. This is sometimes also referred to as white box monitoring.
How do you restart a Java program?
Basically it does the following:
- Find the java executable (I used the java binary here, but that depends on your requirements)
- Find the application (a jar in my case, using the MyClassInTheJar class to find the jar location itself)
- Build a command to restart the jar (using the java binary in this case)
- Execute it!
When to go for microservices authentication and authorization?
If your back-end (micro) services are to have total faith that the front-end (global) services have authenticated and authorized the transaction, then you can go for option 1.
What happens when a service goes down in a microservice?
The same thing happens when the service goes down. Whatever additional data is required by the registry must be provided by the service itself. If you have been following this series, you know that microservices are all about dealing with a single concern, so self-registration might seem like an anti-pattern.
What is single sign on in microservice architecture?
The only SO post I found on the topic is this one: Single Sign-On in Microservice Architecture My idea here is to have in each service (eg. authentication, messaging, notification, profile etc.) a unique reference to each user (quite logically then his user_id) and the possibility to get the current user’s id if logged in.
How is session storage handled in microservice authentication strategy?
In this strategy, session storage doesn’t really matter, as it is only handled by the authenticating app. Then the user_id can be forwarded to other services. I thought of Rails + Devise (+ Redis or mem-cached, or cookie storage, etc.) but there are tons of possibilities.