Cloud · DevOps

Deploy EventStore to Kubernetes with Helm on Google Cloud GKE

This guide is to show how to use the official Event Store Helm Chart to interactively deploy an Event Store Cluster in Kubernetes Google Cloud GKE service. PrerequisiteConfiguration stepsDeploy Event Store Cluster with HelmUpgrade the cluster with a newer versionRollback to a previous versionDelete resources Prerequisites Install the following utilities in your dev machine. Kubectl… Continue reading Deploy EventStore to Kubernetes with Helm on Google Cloud GKE

CQRS · Domain Driven Design · Event Sourcing · Software Architecture

Distributed Architecture: 3 Steps

Here is my view implementing business requirements with DDD, Event Sourcing and CQRS. Ingestion Processing CQRS and Data Distribution Applying the same 3 steps for each new requirements let improves time after time the mechanics of each small bubble while it is living in the aquarium of an Event Driven ecosystem along with bigger legacy… Continue reading Distributed Architecture: 3 Steps

CQRS · Domain Driven Design · Software Architecture

Distributed Architecture 03: CQRS and Data Distribution

In our journey we started with a business requirement, we model the requirement with commands, events, we ingest input data, we process the data, we implemented processing components using Event Sourcing pattern and we stored our Domain Events in small streams. All this represent the way to define and feed our write model. The benefit… Continue reading Distributed Architecture 03: CQRS and Data Distribution

Domain Driven Design · Event Sourcing · Software Architecture

Distributed Architecture 02: The Processing

In the ingestion phase data went through the front door to enter our domain. In the domain area we want to process the data in case they mean something for our components, ignore them if not relevant or raise exception if the data are relevant but something is not right. In the previous phase, the… Continue reading Distributed Architecture 02: The Processing

Domain Driven Design · Event Sourcing · Software Architecture

Distributed Architecture 01: The Ingestion

neurons are cells that are specialised to pass signals to individual target cells, and synapses are the means by which they do so Introduction Clients need results… synchronously Scale the ingestion channel Using Single or Multiple Input Streams Discover unstructured data Introduction A Distributed Software Architecture is formed by several parts that communicate with each… Continue reading Distributed Architecture 01: The Ingestion

Software Development

Persistent Subscriptions Status in Event Store UI

Given that you are using Event Store Persistent SubscriptionsWhen your clients publish messages to streamsThen the UI shows a Red flag even if the messages are handled The setting MinimumCheckPointCountOf https://eventstore.org/docs/dotnet-api/competing-consumers/index.html#persistent-subscription-settings can determine the ‘Status # of msgs’ on the Persistent Subscriptions UI View. The default value of this setting is 10. When a checkpoint… Continue reading Persistent Subscriptions Status in Event Store UI

Software Development

The number of nodes in an EventStore cluster is fixed… no it’s not! (Clones and other node roles)

Clones can be used to add new nodes to an existing EventStore cluster temporary Imagine that we have a classic 3 nodes cluster up and running for ages. Now someone in the business side of the company is asking to add redundancy over a separate Data Center for security reasons in case of catastrophic disaster.… Continue reading The number of nodes in an EventStore cluster is fixed… no it’s not! (Clones and other node roles)

Event Sourcing · Software Development

Cross DataCenter replication with EventStore

After almost 4 month after I joined the EventStore team I’m going to present my first big egg: GeoReplica. This feature has been in the air for a while and it was referred as Multi Master replication. The GeoReplica is distributed as a fully supported closed source plugin. At the moment that I’m writing we… Continue reading Cross DataCenter replication with EventStore