management-center | The management center for Eclipse Mosquitto | Authentication library

I'm pretty new to using Hazelcast for its interesting feature of auto-sync with other cache instances. My queries are bottom of the description.

Here was my initial goal:

1. Design an environment following Hazelcast sidecar caching pattern.
2. There will be no cache on the application container side. Basically, I don't want to use "near-cache" just to avoid my JVM being heavy and reduce GC time.
3. Application Container in each Node will communicate with its own sidecar cache container via localhost IP.
4. Hazelcast management center will be a separate node that communicates with all the nodes containing Hazelcast sidecar cache container.

Here is the target design:

I prepared Hazelcast configuration [hazelcast.yaml] for Hazelcast container,

In my project I'm using Jhipster Spring Boot and I would like to start 2 instances of one microservise at the same time, but on different instances of a database (MongoDB).

In this microservice I have classes, services, rests that are used for collections A, B C,.. for which now I would like to have also history collections A_history, B_history, C_history (that are structured exactly the same like A, B, C) stored in separated instance of a database. It makes no sense to me to create "really separated" microservice since I would have to copy all logic from the first one and end up with doubled code that is very hard to maintain. So, the idea is to have 2 instances of the same microservice, one for A, B, C collections stored in "MicroserviceDB" and second for A_history, B_history, C_history collections stored in "HistoryDB".

I've tried with creating 2 profiles, but when I start from a command line History microservice, it is started ok, but if I also try to start "original" microservice at the same time, it is started but immediately history service becomes "original" microservice. Like they cannot work at the same time.

Is this concept even possible in microservice architecture? Does anyone have an idea how to make this to work, or have some other solution for my problem?

Thanks.

application.yml

I have Hazelcast 4.2 runs in a linux server in a standalone mode by running the following files in background:

hazelcast core : bin/start.sh

hazelcast management center : management-center/bin/start.sh

I am looking for a way to make Hazelcast and management center runs as a Linux service using the start.sh files in order to make it easier to run and stop

May I ask your help on how to loop over a mapConfig to change the backup-count of a running Hazelcast that is setup from a ClientConfig class?

I have checked the hazelcast code examples but all cases, the backup-count is set over configuration I also tried to apply the backup-count code from this stackoverflow (which, btw, was asked by myself) but I'm facing a UnsupportedOperationException because it seems a Hazelcast ClientConfig instance cannot change in runtime, is it correct? Is there any workaround for it/suggestion on how to overcome it?

I have the following implementation:

I'm trying to set-up hazelcast and the management center for developement using docker. Unfortunately the management center does not find the hazelcast node.

I startet hazelcast and the management center on my machine as instructed here https://hub.docker.com/r/hazelcast/hazelcast

I do geht the following message when I enter the management center:

I tried to enter the missing information in the form like this:

but I don't find the correct values to get this working. Any ideas whats wrong?

I used this commands to start docker: