Skip to main content

MassTransit–Quorum queues

Mirrored queues have been a feature in RabbitMQ for quite some time. When using mirrored queues messages are replicated across multiple nodes providing high availability in a RabbitMQ cluster. Each mirrored queue has a master and one or more mirrors, and messages are replicated from the master to its mirrors.

Mirrored Queues operate on synchronous replication, meaning that the master node waits for at least one mirror to acknowledge the receipt of a message before considering it successfully delivered. This impacts performance and can result in throughput issues due to the synchronous nature of replication.

Certain failure scenarios can result in mirrored queues confirming messages too early, potentially resulting in a data loss.

Quorum queues

Quorum Queues are a more recent addition to RabbitMQ, introduced to address some of the limitations posed by Mirrored Queues. They use a different replication model based on the Raft consensus algorithm. In this model, each queue is replicated across multiple nodes, and the consensus algorithm ensures that the data is consistent and available even if some nodes fail.

By default MassTransit automatically creates a queue for you. If you want to use a quorum queue you can use the following code to do this for a specific queue:

Or use the configuration callback if you want to apply this for all queues:

More information

Quorum Queues — RabbitMQ

Labels:

Popular posts from this blog

.NET 8–Keyed/Named Services

A feature that a lot of IoC container libraries support but that was missing in the default DI container provided by Microsoft is the support for Keyed or Named Services. This feature allows you to register the same type multiple times using different names, allowing you to resolve a specific instance based on the circumstances. Although there is some controversy if supporting this feature is a good idea or not, it certainly can be handy. To support this feature a new interface IKeyedServiceProvider got introduced in .NET 8 providing 2 new methods on our ServiceProvider instance: object? GetKeyedService(Type serviceType, object? serviceKey); object GetRequiredKeyedService(Type serviceType, object? serviceKey); To use it, we need to register our service using one of the new extension methods: Resolving the service can be done either through the FromKeyedServices attribute: or by injecting the IKeyedServiceProvider interface and calling the GetRequiredKeyedServic...
Read more

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.
Read more

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t...
Read more