Posted on April 28
, 2024 ()
The Pipes library allows you to create modular applications
where isolated nodes can be dynamically instantiated and connected for
extracting, transforming, and loading (ETL)
data from/to diverse sources and destination. This library has been built after years of experience
on developing monitoring agents (it actually powers
Grafana Beyla), but it is not restricted only to monitoring.
Posted on December 23
, 2022 ()
Sometimes I can see small peaks of visits to this blog, especially when a post
reaches sites like e.g. Reddit or
HackerNews. But the extra amount of load never spends a significant amount of server resources.
Thinking about that, a question came to my mind: how many requests/second would my blog be able to dispatch
with decent response times?
Posted on December 2
, 2022 ()
With the arrival of Generics to Go 1.18, a new programming model has arrived to
Go: functional stream processing. This post evaluates some current
libraries providing such functionality, and compares
the achieved performance in single-thread streams.
Posted on November 4
, 2022 ()
In 2017, I started to code the engine that runs this blog as
a learning exercise for the Go programming language, following the famous
Writing Web Applications official tutorial.
That means that the quality of some parts of the code of this blog was poor, making it
difficult to understand (even for myself) and difficult to extend with new,
useful features that I had in mind to agilize even more my writing/publishing
workflows.
Posted on January 21
, 2022 ()
After more than 4 years, I implemented HTTPS support for my blog. All
the old HTTP links will be redirected to their HTTPS equivalent.
Posted on September 8
, 2021 ()
This article shows you the tool that the Kubernetes Go client library
provides to keep an updated in-memory snapshot of your cluster resources.
Posted on March 15
, 2020 ()
Golang provides the syscall/js
experimental package to facilitate
the creation of browser-based applications without requiring any javascript
transpiler; just targeting your official Go compiler to WebAssembly and loading
the artifact in the browser. This blog post is a simple tutorial to allow you
setting up your Go WebAssembly project, as well as some basic functions to
allow your Go code interacting with JavaScript objects and functions.
Posted on February 3
, 2020 ()
This blog post is a step-by-step guide that shows you the basic usage of
KAConf, an Annotation-based configuration system
inspired in the wonderful Spring Boot, but simpler, lighter,
not so magic, and independent of any large framework, with no transitive
dependencies.
Posted on January 5
, 2020 ()
In my previous blog post I evaluated the
feasibility of Java for lightweight system programming thanks to the
GraalVM
native image generation tool. Despite the initial results look promising,
I felt disappointed when they
pointed me out that GraalVM does not support reflection by default (which IMHO
is a wonderful and powerful tool to enhance the expressiveness of our software
and to reduce boilerplate). However, you can actually configure the
ahead-of-time compiler to incorporate a user-provided reflection metadata.
Posted on December 20
, 2019 ()
There is still a common belief about Java being slow (especially during the startup)
and memory-consuming, making it not being the first option for ephemeral service
instances, like containers. This blog post pretends to put some light on
those assertions, quantifying the impact of a last-generation JVM in a simple,
single-threaded, application. We compare the impact of the JVM measuring the
execution time and memory spent of a Java QuickSort implementation,
comparing it with the execution of a native image generated with the modern
GraalVM Ahead-Of-Time (AOT) compiler and the same
QuickSort implementation in Go.