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¿Cómo se puede gestionar un grupo de 500 empresas, 50.000 empleados y 50.000 millones de capitalización bursátil con unos servicios de... 14 empleados? 😲 La historia de Constellation Software, vía #bonilista app.supermo.no/share/eed035...
Cómo crear una constelación de software 🚀
La historia de Constellation Software
app.supermo.no
October 26, 2025 at 11:41 AM
Reposted by Berto Fontecha
One day the industry will recognize the drawbacks of AI agents and nondeterministic automation, and rediscover the UNIX philosophy of chaining together small purpose built tools in a low cost and predictable way, otherwise known as shell scripts.
October 9, 2025 at 11:22 AM
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Hoy en FredCon 25 compartí la charla “Incentivos perversos, resultados previsibles: Cuando el sistema sabotea a los equipos”.
Cómo el Taylorismo aún sabotea a nuestros equipos y qué podemos hacer para cambiar el sistema.

👉 Slides y resumen en el blog:
www.eferro.net/2025/09/char...
Charla: Incentivos perversos, resultados previsibles. Cuando el sistema sabotea a los equipos
Hoy he tenido la oportunidad de participar en FredCon 25 con la charla “Incentivos perversos, resultados previsibles: Cuando el sistema sab...
www.eferro.net
September 18, 2025 at 10:35 PM
Reposted by Berto Fontecha
muchas gracias a todos los que se pasaron por mi sesión sobre la integración de LLMs en programas Java con Langchain4j y Ollama en @commit-conf.com #commitconf25 -- slides aquí: speakerdeck.com/deors/langch...
April 5, 2025 at 11:35 AM
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No pasa nada... hasta que pasa 👇
March 19, 2025 at 5:00 PM
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Pedazo de artículo de Rebeca Méndez sobre la arquitectura seguida en el backend de Manfred 👏

medium.com/@breogana/ar...
Arquitectura sin fliparse: hexágonos, monolitos y decisiones pragmáticas
Si llevas un tiempo desarrollando software, seguro que te has topado con el eterno debate de las arquitecturas: que si microservicios, que…
medium.com
March 20, 2025 at 7:36 AM
Reposted by Berto Fontecha
New post from the Lean Software development series. Deliver as Fast as Possible
www.eferro.net/2025/03/lean...

Repost are welcome! 🙏

#Lean #LeanSoftwareDevelopment #xp #agile #ContinuousDelivery
Lean Software Development: Deliver as Fast as Possible
One of the fundamental principles of Lean Software Development is to deliver value as quickly as possible. However, this does not simply mea...
www.eferro.net
March 9, 2025 at 8:52 AM
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¿Te interesa #LLM y #LangChain4j? 🤖💡
@lostinbrittany.bsky.social lo explica todo en la charla que dio hace unos días. ¡No te lo pierdas! 🔥
📺 youtu.be/b_h308CZsNc
March 7, 2025 at 10:21 AM
Reposted by Berto Fontecha
Wooow, I made it to the top 100 of #Java talks in 2024, position #43 for "SpringBoot ❤️ Testcontainers" 🥳
It was the only talk I did outside of Spain last year (at Voxxed Days CERN)

www.techtalksweekly.io/p/100-most-w...
🏆 100 Most Watched *Java* Talks Of 2024
A complete list of the top 100 Java talks of 2024 ordered by the number of views.
www.techtalksweekly.io
March 4, 2025 at 11:20 AM
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The only sustainable way to go faster is by avoiding waste. Learn, adapt, and improve. #software #agile #lean #continuousimprovement"
February 14, 2025 at 10:02 AM
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The fastest code is the code that is never executed. Be brave, and remove the unnecessary. If a feature is not used, delete it. #CodeDeletion #Simplicity #SoftwareDevelopment
February 9, 2025 at 6:50 PM
Reposted by Berto Fontecha
Great article. Very instructive. A clear example of the practical use of the Lean principle of defer commitment, working in small steps, always focusing on making the system as simple as possible for current needs (as a strategy to continuously evolve it as needed...).
For the last year or so I have been noodling on the idea of a Best Simple System for Now.

What happens when you write exactly the code you need, at the level of quality you need, but solving the problem _for now_ rather than a generalised or hypothetical version of it?

dannorth.net/best-simple-...
Best Simple System for Now
You can have your cake and eat it, as long as you bake it carefully. ‘We can do this the quick way and pay later, or the thorough way and pay now.’ This seems to be a fundamental dichotomy in software...
dannorth.net
February 4, 2025 at 8:32 AM
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Emerging Patterns in Building GenAI Products martinfowler.com/articles/gen...
Emerging Patterns in Building GenAI Products
Patterns from our colleagues
martinfowler.com
February 3, 2025 at 10:07 PM
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one of the most inspiring things I've read in a while about AI engineering with Spring AI

spring.io/blog/2025/01...
Building Effective Agents with Spring AI (Part 1)
Level up your Java code and explore what Spring can do for you.
spring.io
January 29, 2025 at 8:12 PM
Tomato Architecture - A Pragmatic Approach to Software Design www.sivalabs.in/tomato-archi...
December 5, 2024 at 9:03 PM
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Benditas Feature Toggles!

Esta tarde, tras semanas trabajando hemos salido con una nueva funcionalidad en un solo país y en horario de baja actividad.

A última hora se detecta un bug raro pero importante.

Dar marcha atrás ha sido hacer 1 clic y ya mañana con todo el equipo lo arreglaremos
December 3, 2024 at 6:37 PM
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And now #JavaChampions can also self-verify! If you hold that award, go to verified-bluesky-rpu7w3bv.fermyon.app and self-verify to get a nice label and become part of a list and starter pack of verified Java Champions. @javachampions.bsky.social, do you like it?
Bluesky verification
verified-bluesky-rpu7w3bv.fermyon.app
December 1, 2024 at 1:56 PM
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an amazing comparison of ChatModels buried in the Spring AI documentation

docs.spring.io/spring-ai/re...
Chat Models Comparison :: Spring AI Reference
docs.spring.io
November 25, 2024 at 5:55 AM
Reposted by Berto Fontecha
I'm writing a blog post about my 4+ years of experience working with 50+ companies on [high-performance] data engineering projects. This is the last paragraph
November 24, 2024 at 12:36 PM
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Hoy ha sido la Tech Excellence, una conferencia en remoto y gratuita.

Con gente del nivel de Kent Beck, Dave Farley, Jimmy Bogard, Alistair y Laila Bougria.

Si veis alguna charla, comentad qué tal 🙏

youtube.com/playlist?lis...
Tech Excellence Conference 2024 - YouTube
youtube.com
November 22, 2024 at 8:22 PM
Reposted by Berto Fontecha
[BLOG] One good reason to read "Release it!"

With detailed sketchnotes of each stability pattern inside.

ydarias.github.io/one-good-rea...
One good reason to read Release it!
Release It! is a book from Michael Nygard, and everywhere you look the ratings are very good. At this post I will tell you just one reason why reading it wou...
ydarias.github.io
October 4, 2024 at 9:31 AM