Iker Jiménez's Avatar

Iker Jiménez

@ijimenez

Java performance, Kafka and Kubernetes. Learning is my addiction

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21.11.2023
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Latest posts by Iker Jiménez @ijimenez

screenshot of tweet saying "who the fuck is playing pokemon in antarctica" with a trade partner in antarctica

screenshot of tweet saying "who the fuck is playing pokemon in antarctica" with a trade partner in antarctica

photo of me in antarctica playing my switch. adelie penguins are in the background

photo of me in antarctica playing my switch. adelie penguins are in the background

photo of me in antarctica playing my switch, with pokemon legends z-a. adelie penguins are in the background.

photo of me in antarctica playing my switch, with pokemon legends z-a. adelie penguins are in the background.

I've waited 3 years to make this post

30.12.2025 15:14 👍 22216 🔁 5695 💬 140 📌 88

Jesucristo prometió acabar con el pecado del mundo.
Odín prometió acabar con los gigantes de hielo.
¿Quien cumple?
Yo no veo ningún gigante de hielo.

11.10.2025 06:43 👍 45 🔁 16 💬 1 📌 1
Preview
Head First Java, 3rd Edition What will you learn from this book? Head First Java is a complete learning experience in Java and object-oriented programming. With this book, you'll learn the Java language with a... - Selection from...

www.oreilly.com/library/view...

03.10.2025 20:34 👍 1 🔁 0 💬 0 📌 0

Planning to attend a tech conference next year. I am interested in #java #jvm #performance and #streaming. Which conference should I attend? Ideally in Europe

01.10.2025 16:40 👍 2 🔁 2 💬 0 📌 0
Should You Still Use LOMBOK in 2025? Pros & Cons
Should You Still Use LOMBOK in 2025? Pros & Cons YouTube video by CyberJAR

Should You Still Use LOMBOK in 2025? Pros & Cons
youtu.be/D-4mWspCz58?...
Great video by @cat-edelveis.bsky.social

25.09.2025 16:26 👍 6 🔁 1 💬 1 📌 1

Going through the book right now and enjoying it so far. What’s the best way to report typos?

23.09.2025 18:29 👍 1 🔁 0 💬 1 📌 0

Great writing. A lot of familiar things in there

06.09.2025 08:11 👍 1 🔁 0 💬 0 📌 0
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Image from @esa.int

20.08.2025 15:01 👍 19 🔁 18 💬 3 📌 0
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The Pragmatic Engineer 2025 Survey: What’s in your tech stack? buff.ly/xCCf8ti
#developer #tech #survey

16.07.2025 05:08 👍 2 🔁 2 💬 0 📌 0

I could really use your help looking for Senior++ Technical Writer roles or intermediate++ Developer Relations roles. I'm looking to stay in Germany.

I'm also considering building up a freelance pipeline but realistically full time work makes my visa situation way easier.

Please RT for reach 🙇‍♀️

30.06.2025 18:56 👍 26 🔁 36 💬 2 📌 5
Advanced performance analysis with async-profiler by Andrei Pangin
Advanced performance analysis with async-profiler by Andrei Pangin YouTube video by Devoxx UK

Advanced performance analysis with async-profiler by Andrei Pangin @devoxx.uk #jvm www.youtube.com/watch?v=u7-S...

17.05.2025 22:18 👍 6 🔁 3 💬 0 📌 0
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Performance Improvement by 10 Times, GraalVM Application Observability Practice: www.alibabacloud.com/blog/perform... by Alibaba Cloud Native Community
#Java #GraalVM #observability

15.05.2025 09:46 👍 15 🔁 4 💬 0 📌 0

Today's thread is about something I'm rather experienced with...

How to Get Fired With Both Grace and Aplomb

14.05.2025 16:34 👍 229 🔁 93 💬 3 📌 17
Preview
a man with a beard is wearing a red and gold iron man costume ALT: a man with a beard is wearing a red and gold iron man costume

Just got caught up in the latest round of terminations from Microsoft.

If anyone needs a "batteries included" advocate who really knows code, AI, and real production concerns + solutions, ping me! Ready to make great things happen for you.

Onward and upward!

13.05.2025 16:26 👍 54 🔁 32 💬 20 📌 7
Preview
airhacks.fm podcast podcast with adam bien

The podcast episodes by @adambien.blog and @forked-franz.bsky.social talking low level Java performance stuff are 🙌🏻🙌🏻
I hope they do more
airhacks.fm#episode_343
airhacks.fm#episode_340

11.05.2025 14:20 👍 4 🔁 3 💬 1 📌 0

I’ve known Robert Prevost for years as one of the main figures in online TMNT fandom, where no one has a bad word to say about him. He probably won’t have as much time to contribute to Turtles wikis with his new gig but I though his choice of “Pope Leo” was a lovely nod to the community

09.05.2025 03:27 👍 4534 🔁 490 💬 46 📌 24

Would graalvm be an option for you?

07.05.2025 08:29 👍 0 🔁 0 💬 1 📌 0

Where do I start if I want to learn Apache Flink fast? I prefer video content over written but at this point I am mostly looking for high quality materials in any format. #flink #streaming #java

01.05.2025 07:21 👍 1 🔁 2 💬 1 📌 0

I might be an oddity, but I genuinely find joy in decommissioning unused systems. A lifetime ago, a colleague and I prepared a talk for an internal dev conference titled "7 Habits of Highly Effective Software Decommissioners." It didn’t get accepted — of course 🤣

27.04.2025 06:09 👍 0 🔁 0 💬 0 📌 0
Practical Zombie Hunting for Kubernetes Users - Holly Cummins, Red Hat
Practical Zombie Hunting for Kubernetes Users - Holly Cummins, Red Hat YouTube video by CNCF [Cloud Native Computing Foundation]

Watching @hollycummins.com talk about how wasteful we are as an industry wakes up some hunter instinct in my brain. I need to find and kill the zombies.

youtu.be/1c2va5nATmQ?...

26.04.2025 16:32 👍 3 🔁 1 💬 1 📌 0
programmers are always posting like "worked on tracking down an issue with a Flurble deployment for twelve hours. the problem wasn't in Flurble at all - it was in the Gumbies install. It turns out if you install Gumbies 3.0 over Gumbies 2.7 and don't do a cache flush on all the client spiders they'll get stuck in the crystal maze." then you look up Gumbies and the site is one of those scroll scroll scroll types
with one sentence per page, like "GUMBIES is a lean, expressive sharding sandcube for testing and deploying large scale
Woodchips playgrounds. GUMBIES automates and streamlines away watersliding phases, meaning your team can
get right to the chipping. See why Microsoft, OpenAl and Bloingo have embraced GUMBIES in their Woodchips
workflows." and you get to the bottom and you're like I
want this I guess but I still don't know what

programmers are always posting like "worked on tracking down an issue with a Flurble deployment for twelve hours. the problem wasn't in Flurble at all - it was in the Gumbies install. It turns out if you install Gumbies 3.0 over Gumbies 2.7 and don't do a cache flush on all the client spiders they'll get stuck in the crystal maze." then you look up Gumbies and the site is one of those scroll scroll scroll types with one sentence per page, like "GUMBIES is a lean, expressive sharding sandcube for testing and deploying large scale Woodchips playgrounds. GUMBIES automates and streamlines away watersliding phases, meaning your team can get right to the chipping. See why Microsoft, OpenAl and Bloingo have embraced GUMBIES in their Woodchips workflows." and you get to the bottom and you're like I want this I guess but I still don't know what

This is my entire life

17.03.2025 01:53 👍 1503 🔁 417 💬 28 📌 39
Preview
How I built an AI company to save my open source project The story of Timefold: how we turned a doomed open source project into a fast-growing PlanningAI company.

How I built an AI company to save my open source project

On this day, 3 years ago, my world fell apart. It was a Thursday. I just finished my second meeting that morning, looked at my inbox and realized it was over. My life’s work was over.

Read more:
timefold.ai/blog/how-i-b...

10.02.2025 16:46 👍 43 🔁 14 💬 3 📌 1

El poder construir chips más pequeños permite menos consumo y más rendimiento. Es una tecnología de base, las aplicaciones son potencialmente infinitas. Lo de DeepSeek es un ejemplo de hacer más con menos, ingenio humano puramente

28.01.2025 06:58 👍 0 🔁 0 💬 0 📌 0
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I have a big ask. My 9yo son is autistic and he’s been raising a betta fish he named Kevin. Yesterday He asked if he could “share a photo of Kevin with the whole world“. I don’t know if this will work, but a dad’s gotta try. Like and share if that’s your thing. Kevin says hi! 🐟👋

21.01.2025 18:20 👍 12802 🔁 2924 💬 1095 📌 285
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How do you fit a 250kB dictionary in 64kB of RAM and still perform fast lookups? For reference, even with gzip -9, you can't compress this file below 85kB.

In the 1970s, Douglas McIlroy faced this exact challenge while implementing the spell checker for Unix at AT&T.

19.01.2025 03:52 👍 14 🔁 7 💬 1 📌 0
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I've alwats found this image very helpful.

26.11.2024 17:14 👍 29 🔁 3 💬 0 📌 0

I’m having a conversation with my mom about something I want for Christmas and a week later Santa gives it to me.

When will we pass privacy regulations

25.12.2024 14:48 👍 7844 🔁 871 💬 120 📌 26

I'm looking for a new job.
Fully remote since I'm living in the Japanese countryside, but I'm flexible on working hours.

If you know someone that needs a Kotlin/Java backend engineer with also experience in leading teams and mentoring please pm me.

Retweets are appreciated!

15.12.2024 03:48 👍 25 🔁 30 💬 0 📌 1
If you meet a bear in the forest, just ask him to review your pull request so he pretends he didn't notice you and goes away

If you meet a bear in the forest, just ask him to review your pull request so he pretends he didn't notice you and goes away

02.12.2024 18:36 👍 114 🔁 31 💬 0 📌 1