Could anyone guide me how to do event sourcing in mule as mentioned in the blog below
https://dzone.com/articles/introduction-to-event-sourcing
The article describes a conceptual practice. You can implement it as you like. It is not something that Mule provides. It is the same as you would design your database as an example. Not a Mule concept.
Related
Does anyone know if there is a free online tool available to create BPMN files except bpmn.io?
I have been using BPMN io for a while, and it does not allow me to change the task/event's ID from the GUI. Because of this, I have to do this manually. But it's not practical when there is a large number of events/tasks. Can someone tell me if there is a free online alternative for bpmn.io that can change the event's ID or if there is a way to change the id in bpmn.io? Did a background check on this and couldn't find one.
There is also the offering from Camunda - Camunda Web Modeler (CaWeMo). I don't think it does what you are asking though. I didn't think event IDs were part of the BPMN specification, since they are likely more about implementation than modeling, but I've not actually looked into the BPMN specification that deeply.
If the one you are using exports in a format that you find useful, you could update the event nodes as a post processing step.
You can try using https://kiegroup.github.io/kogito-online/#/editor/bpmn for bpmn authoring.
Can someone explain the significance of Hazelcast Custom Serialization techniques :-
StreamSerializer
ByteArraySerializer
I have gone through Hazelcast official documentation but it's not very clear from that.
There's a nice blog writeup at https://hazelcast.com/blog/comparing-serialization-methods
I want to use MassTransit bus with RabbitMQ. But I am not able to find a simple example. I am looking for example which will get me started.
What I have tried.
googled: But most the examples are using MSMQ or they using too many configuration options.
GitHub: I looked a the GitHub for MassTransit (https://github.com/MassTransit/MassTransit/tree/master/src/Samples) But the example here is heavily loaded. It's very hard to understand for beginners.
Reading docs: I have started reading docs but it will take some time before I finish it. I am hoping if someone shares a link to simple example which will get me started.
Please provide your suggestion.
Here's a simple, good pub-sub example using MassTransit and RabbitMQ both.
http://looselycoupledlabs.com/2014/06/masstransit-publish-subscribe-example/
In case the article link does not work, here's the link to the source code:
https://github.com/dprothero/MtPubSubExample
Thanks to the author of course!
MassTransit implements a lot of concepts and provides great many features with a very small surface API. There's no simple way to describe everything it does, because the problems it helps to solve are not simple, but an example can be made small.
Have a look at this sample I have for testing throughput:
https://github.com/et1975/Throughput-Test
The only "extra" that one might find unnecessary is Dependency Injection integration. You'd want one in most cases, but it does hide how certain bits interact.
Look at https://groups.google.com/forum/?fromgroups#!forum/masstransit-discuss for more help.
Cheers,
ET.
i am very new in WCF. so often gaze for wcf code & article. after viewing many code i often stuck for very basic things and got no elaborate discussion for the below question. so here are my few basic question....and looking for details discussion with sample situation and with sample code.
what is the meaning of UseSynchronizationContext=false
when one should turn on UseSynchronizationContext=true
or when one should go for UseSynchronizationContext=false ?
Its to do with whether, by default, WCF will attempt to use an existing thread synchronization context or not. There is an interesting question related to this here:-
WCF InstanceContextMode.Multiple issues
Also a codeproject posting about synchronizationcontext here:-
Understanding SynchronizationContext (Part I)
From the MSDN documentation it looks like the default for this is true.
I am very much new to activemq. I was trying to use activemq broker for subscribe/publish messages. But as for lack of experience I have no idea how to do it or if its really possible to do it. I googled a lot but unfortunately there is no suitable example for this type of functionality. So I was hoping may be someone here can put some light on it. Can any one here can give me some example of how to do it? or may be some link to online documentation. I have already tried apache activemq broker documentation. But it was not helpful, or may be I dont have that much experience to take help from it.
What you are interested in is done using topics. The reason that you haven't necessarily seen a description of it on the ActiveMQ site is that it's a foundational thing that is assumed that readers know about.
If you are looking at an introduction into messaging using Java, the best place is Oracle's JMS tutorial. Afterwards take a look at the code in the examples directory of an ActiveMQ installation. Alternatively, ActiveMQ in Action is a great book to get you heading in the right direction.
If you are using a language other than Java, ActiveMQ supports the STOMP protocol for which there are a large number of implementations in various languages.
Hope that helps.