Speaking about Event sourcing is speaking about an architecture pattern: the Event-driven architecture. It
has become a more common as solution with specialised db like EventStoreDB, Kafka and other new tools that
makes it easier to apply at scale...
Let’s say you are doing some refactoring. You have a big class that is doing too many things, and you want to carve a
piece out into its own class doing its own thing. Following the responsibility pattern.
A class should be defined around its ...
Deploying a package on the GitHub Package Repository (GPR) have already been
Now let’s have a deeper look at how to use that published package in your project.
This time I’ll use the Kotlin package randomK which is a package that takes...
Apache Avro is an open source data serialization system. You can also
find documentation on confluent which may be more user-friendly.
Avro is a schema format created and used with Kafka.
Maps to JSON (works with many programming langu...
For this article I created an example gem sylhare/Vermelinho, obviously based
on the Make your own gem from the ruby gem guide.
Let’s check the set up, tests, and how to deploy the gem
You don’t need much to create a gem, only create...
Postman 📬 is a tool to easily send Rest, SOAP and GraphQL queries. It is one of the popular
tool in its category among some alternative like Insomnia or paw (for
Postman is using and sharing open source libraries, you can also contribute to...
Let’s talk about Graph QL which is a query language for an API. Meaning that contrary to normal
REST APIS, with GraphQL APIs you can discover and query only the data you need form a single call.
To implement a GraphQL API, let’s use Apollo server...
In this article we’ll look at a Kotlin springboot project using a generated API from a “swagger file”. As usual, find the
code in GitHub at sylhare/Petshop 🐶🛒.
example. We are going to use openapi-generator...
Jupyter notebook is a tool to interactively develop with python. When working with datascience, it can through the use
of different block of code, text or rich content make it all integrate smoothly in one place.
It’s called notebook a noteboo...
Simple Blockchain overview
In a nutshell
Let’s not go into too many details here, just a simplified version of how a blockchain generally work. There are a lot
of information out there.
A blockchain is not only for cryptocurrencies, it is a lik...