iiinova — where your digital self keeps evolving

Raphael De Lio @raphaeldelio.dev · 31/05/2026

Experimentations with Spring AI. Multi agent architecture with streaming of what the agent is actually doing while running. #javabubble

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Raphael De Lio @raphaeldelio.dev · 26/05/2026

AI engineering means designing the context, runtime, and harness around agents so they run reliably, observably, and at scale. In my Redis webinar on May 28, I’ll focus on harness engineering: caching, session management, and rate limiting. RSVP: redis.io/resources/vi...

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Raphael De Lio @raphaeldelio.dev · 20/05/2026

OpenAI dropped a tool to verify if an image has been AI generated. And LinkedIn is already using it to tag images that were AI made. The technology is grounded in two mechanisms. One that relies on metadata. Another that relies on imperceptible pixels. Read more: openai.com/index/advanc...

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Raphael De Lio @raphaeldelio.dev · 13/05/2026

Happy to announce that I'm returning as the host of the Dutch Kotlin User Group in Amsterdam after a year and a half hiatus!

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Raphael De Lio @raphaeldelio.dev · 02/05/2026

Bought more shares of Duolingo yesterday. I had previously bought it when learning Dutch a couple years ago and decided to do so again that I’m learning Japanese. Practicing something like one hour a day during a week and I can already read Hiragana. Love this app.

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Raphael De Lio @raphaeldelio.dev · 29/04/2026

I’m addicted to seeing how much energy I’m consuming/producing in realtime. I spend more time on this app than any social media 😂 @zonneplan.bsky.social

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Raphael De Lio @raphaeldelio.dev · 27/04/2026

An agent deleted his prod db with one API call Backups were tied to same volume Least privilege. Environment isolation. Secret management. Backup isolation. Audit logs. Recovery testing. None of this is new The agent didnt invent a new failure mode. It compressed an old one into nine seconds

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Raphael De Lio @raphaeldelio.dev · 17/04/2026

Always a pleasure to be back at @springio.net . Especially when talking about building agentic systems with Spring AI! #java @spring-ai.bsky.social

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Raphael De Lio @raphaeldelio.dev · 07/04/2026

Started playing Eternal Darkness with a friend yesterday. A game released in 2002. We get stuck. I tell him to check ChatGPT. He checks YouTube instead. He’s not a technical person, he’s an airline pilot. What do you infer from that?

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Raphael De Lio @raphaeldelio.dev · 05/04/2026

1/ Amidst so much change and uncertainty in the world, there's something grounding about waking up to a photograph like this. My dad watched men land on the moon in 1969, when he was only 8 years old. He's the reason I care about space exploration.

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Raphael De Lio @raphaeldelio.dev · 24/03/2026

Enterprise agents won’t scale because you gave them better prompts. 𝗧𝗵𝗲𝘆 𝘀𝗰𝗮𝗹𝗲 𝘄𝗵𝗲𝗻 𝘆𝗼𝘂 𝘁𝗿𝗲𝗮𝘁 𝘁𝗵𝗲𝗺 𝗹𝗶𝗸𝗲 𝘀𝘆𝘀𝘁𝗲𝗺𝘀.

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Raphael De Lio @raphaeldelio.dev · 19/03/2026

Yesterday, @bsbodden.bsky.social and I delivered our Designing Multi Agent Systems with Spring AI hands-on lab at JavaOne in San Francisco. More than 35 people showed up and it was the lab with most registrations of the day. 🙏🙌☕️ #java

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Raphael De Lio @raphaeldelio.dev · 15/03/2026

The thing is that the longer the context window is the worse retrieval accuracy is as well. For GPT 5.4 that was released last week, you can see that accuracy is ~97% up to 32k tokens, but drops to ~36% when over 512k tokens. You can fit a million tokens, but GPT will not use it effectively.

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Raphael De Lio @raphaeldelio.dev · 11/03/2026

It's difficult for me to believe that the cost of coding has got nearly to zero. Especially as someone who's been coding with agents consistently for almost one year.

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Raphael De Lio @raphaeldelio.dev · 03/03/2026

Redis 8 just made KEYS and SCAN faster and safer Operations that used to take 12–14 seconds on large datasets can now complete in just a few milliseconds — making previously discouraged commands viable for in production. Read the full article at: redis.io/blog/faster-...

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Raphael De Lio @raphaeldelio.dev · 28/02/2026

Can’t wait to be back at @springio.net !! The conference that made me love conferences!

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Raphael De Lio @raphaeldelio.dev · 27/02/2026

@anthropic.com says Claude helped NASA plan a 400m drive for Perseverance on Mars. For AI engineers, the lesson is: it was not a bigger model. It was context. Clear constraints. Domain knowledge. Structured outputs. Simulation. Human review. Reliability comes from system design.

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Raphael De Lio @raphaeldelio.dev · 24/02/2026

How does it work for production? Does it spin up other pods in k8s? I'm currently using it in a workshop hub I'm building to make it easier for learners to discover, deploy, and go through hands on labs by themselves. All they need would be Docker. Not even an IDE. It's working fine for now.

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Raphael De Lio @raphaeldelio.dev · 24/02/2026

Docker-in-docker powered by SpringBoot. How cool is that?! A complete hands on lab with no IDE required, no environment setup, no git pull, and no friction. Just open it and start building. #javabubble

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Raphael De Lio @raphaeldelio.dev · 12/02/2026

Love that KLM now let us use their planes’ wifi with no limitations for free! Now I can vibe code at 30,000 ft - currently working on my social media tracker agent built with Spring AI and Redis

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Raphael De Lio @raphaeldelio.dev · 26/01/2026

This was something I discovered while trying to build a reliable multi agent with Spring AI fully within GCP. With OpenAI it works flawlessly. With Gemini, constant structured output issues... Has anyone else seen this? #java #javabubble

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Raphael De Lio @raphaeldelio.dev · 28/11/2025

What happens when you get Kotlin, Spring AI, Redis, and data from the Apollo 11 together? A whole new way of exploring one the most important milestones humanity has ever accomplished! Kotlin conferences just hit different! And it was a pleasure to be part of Kotlin Dev Day! @kotlinlang.org

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Raphael De Lio @raphaeldelio.dev · 25/11/2025

I also have Codemotion Madrid and KotlinConf closing soon in my system #javabubble

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Raphael De Lio @raphaeldelio.dev · 24/11/2025

This week is all about Kotlin as I get ready to speak at Kotlin Dev Day! Can't wait for a day full of Kotlin talks led by a few of the best engineers I have had the pleasure of meeting. If you still haven't got a ticket, get one with 20% discount with the code: kotlinfriends@kdd25 #java #kotlin

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Raphael De Lio @raphaeldelio.dev · 20/11/2025

I went to the @mlopscommunity.bsky.social conference as an attendee today, but when I learned anyone could get on stage and deliver a lightning talk, I didn’t hesitate! 7 minutes to let the audience know how semantic caching can optimize agentic ai costs!

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Raphael De Lio @raphaeldelio.dev · 14/11/2025

Next week I'll be delivering two sessions! One virtually with Camille Nigon from Red Hat and the second one at the Kotlin MeetUp in Eindhoven! At both I'll talk about how Redis can help your agentic applications save on time and cost using vector search. Don't forget to RSVP! #java #kotlin

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Raphael De Lio @raphaeldelio.dev · 13/11/2025

And this video of my friend capturing a Pokémon

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Raphael De Lio @raphaeldelio.dev · 13/11/2025

I went on vacation in September and stopped using social media during the period I was off. I’m returning now and I’d like to share a few memories from our trip to Korea and Japan.

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Raphael De Lio @raphaeldelio.dev · 07/11/2025

LLMs may get expensive fast. At the same time, vector DBs (eg Redis) are versatile but underutilized I delivered a talk at JFall yesterday about three strategies that can be implemented with vector DBs to reduce LLM calls. But the truth is that there are many more! #java github.com/redis-develo...

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Raphael De Lio @raphaeldelio.dev · 29/08/2025

Can artificial intelligence do basic math? I was listening to Anthropic's recent video "How AI Models Think" based on their research on interpretability and found a few insights very interesting. One for example is that there's evidence that LLMs can do simple math (addition).

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Raphael De Lio @raphaeldelio.dev · 27/08/2025

5/ What if I hadn't set it up? It wouldn't have been catastrophic because I have daily backups. A snapshot of my Redis Instance is stored in Google Cloud Storage every 24 hours. Redundancy is key! The best part? On Redis Cloud that can all be set up automatically easily. Took me only 10 minutes.

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Raphael De Lio @raphaeldelio.dev · 27/08/2025

3/ Luckily, I had set ACL (Access Control List), available since Redis 6.0. Easy to set up and block accounts from running "@dangerous" commands like "FLUSHALL"

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Raphael De Lio @raphaeldelio.dev · 27/08/2025

1/ "NOPERM User user:209 has no permissions to run the 'flushall' command" That's the message I got when running "FLUSHALL" on my production Redis instance. 😮‍💨 My team and I developed an internal platform for us to track our work. The chosen database? Redis, of course. #redis @redis.io

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Raphael De Lio @raphaeldelio.dev · 15/08/2025

Vou vender enquanto ainda estou no lucro. Infelizmente não vendi Crocs a tempo

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Raphael De Lio @raphaeldelio.dev · 10/08/2025

Coincidentemente fui ao museu militar holandês hoje e vi um cartaz que pedia aos dispensados da primeira guerra para que fossem para casa e não para o bar que isso era melhor para eles e para suas famílias também.

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Raphael De Lio @raphaeldelio.dev · 10/08/2025

It’s important to note that GPT-5 doesn’t generate images. Underlying, it’s still the GPT-Image-1 released in April 2025 model that’s generating the images.

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Raphael De Lio @raphaeldelio.dev · 10/08/2025

It’s important to note that GPT-5 doesn’t generate images. Underlying, it’s still the GPT-Image-1 model released in April 2025 that’s generating the images.

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Raphael De Lio @raphaeldelio.dev · 10/08/2025

I see a lot of people generating images to test GPT-5 capabilities, but it’s important to note that GPT-5 does NOT generate images. It’s still the GPT-Image-1 model released in April of this year that is generating the images.

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Raphael De Lio @raphaeldelio.dev · 10/08/2025

It’s important to note that GPT-5 doesn’t generate images. Underlying, it’s still the GPT-Image-1 model that’s generating the images.

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Raphael De Lio @raphaeldelio.dev · 08/08/2025

Deveria era ter vendido a Crocs. Espero que eles comecem a falar de IA para ver se sobe. E eu nunca comprei ou usei um Crocs na vida. Onde eu estava com a cabeça?!

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Raphael De Lio @raphaeldelio.dev · 08/08/2025

🚀 GPT-5 is out — and that’s AMAZING news for RAG. Every time a new model drops, people declare “RAG is dead” because of bigger context windows. This time they’re also pointing to better accuracy with massive token counts. Let’s talk about why they’re wrong. 🧵

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Raphael De Lio @raphaeldelio.dev · 06/08/2025

Esse é exatamente o ponto. Pesquisadores de AI não tentam mais imitar a inteligência humana da mesma forma que engenheiros aeronáuticos não tentam imitar o voo de um pássaro. Não é esse o objetivo. A primeira edição do livro é de 1995 btw. A última edição do livro (que estou lendo) é de 2020.

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Raphael De Lio @raphaeldelio.dev · 06/08/2025

A questão é se faz sentido comparar a inteligência de uma AI com a inteligência de um ser humano. É como não aceitar que um avião voa por não voar da mesma forma que um pássaro Dá uma olhada nessa passagem do livro "Artificial Intelligence: A Modern Approach" Um dos livros mais recomendados no meio

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Raphael De Lio @raphaeldelio.dev · 06/08/2025

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Raphael De Lio @raphaeldelio.dev · 06/08/2025

Am I the only one getting classic Mac OS X feelings with OpenAI's website graphic designs? I love it by the way.

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Raphael De Lio @raphaeldelio.dev · 03/08/2025

It is! Even got the OG controller!

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