J On The Beach

An international rendezvous that brings developers, DevOps, and Data Scientists together around Big Data On The Beach!
29-30 October, 2026. Torremolinos, Spain

[VictoriaMetrics @VictoriaMetrics]

¡Enhorabuena, España! 🇪🇸🚀
VictoriaMetrics is heading to Torremolinos for @jotbconf 2026, and we're proud to be a Bronze Sponsor! 🥉
Our DevRel, @DianavTodea, will take the stage with her talk:
🎤 How to Defeat OTel’s Silent Killer: The Performance Overhead
Ever watched your pipeline silently eat up CPU and memory, without any obvious errors? That's the silent killer of #OpenTelemetry: performance overhead. Excessive instrumentation, unoptimized exporters, and high-cardinality data can lead to resource spikes, latency, and unexpected costs. We'll break down the sources of OpenTelemetry overhead, show how to measure and visualize its impact, and walk through practical techniques for reducing it. From sampling strategies to batching, from smarter exporters to #backend tuning, the audience will learn in a live demo how to keep the benefits of #OTel without burning your infrastructure budget. By the end, attendees will have concrete strategies to optimize their own observability pipelines for both performance and cost.
Where? 📍
Palacio de Congresos de Torremolinos, Malaga. Spain
When?⏰
October 30th at 04:40 PM CEST
Save your spot:
https://t.co/CHkpkCQcSb
#Monitoring #metrics #techevents #DevOps

[J On The Beach @JOTBConf]

.@Sentry is a Bronze Sponsor of J On The Beach!

It started as an exception logging tool at Disqus and was open sourced. Today 4+ million developers use it to catch bugs before their users do. 🐛

📍 Torremolinos · Oct 29–30

#Sentry #Bugs #developing #JOTB26

[J On The Beach @JOTBConf]

The AI apocalypse is almost here and tickets are almost gone - only if!

Unemployed or student with no tech experience? Apply for a free Tieso Ticket (Thu/Fri from 3 PM).

Don't be Papafrita get your ticket now!
https://t.co/uHU1ttiS4f

#AI #YAYYAYConf #JOTB26 #BigData #DevOps

[J On The Beach @JOTBConf]

119 million customers in 11 countries, and now a spot among our Platinum Sponsors at J On The Beach!

Welcome, @NN_Group! The Dutch financial services company joins us. Come say hi... they have opened a big tech hub in Madrid.

📍 Torremolinos · Oct 29–30

#Fintech #JOTB26

[J On The Beach @JOTBConf]

Take a look at @daaain's intro from his J On The Beach talk... and get ready, because you can expect a very similar outfit for our Friday Halloween costume day! 👻✨

#AI #TeamPractices #Quality #JOTB26 #YAYYAYConf

[J On The Beach @JOTBConf]

The tech team behind Zara also writes open source. Weave.js, a library for whiteboards and design apps, is theirs.

Inditex Tech joins J On The Beach as a Bronze Sponsor 👋

📍 Torremolinos · Oct 29–30

#OpenSource #libary #JOTB26

[J On The Beach @JOTBConf]

Platinum Sponsor spotlight 🏆 Prima

Italian insurtech with a remote-friendly culture, backend mostly Elixir and Rust. Come and talk with them at J On The Beach!

📍 Torremolinos · Oct 29–30

#Elixir #Rust #insurance #insurtech #Prima #JOTB26

[Observatorio de la Admon. Electrónica 🇪🇸 @OBSAE]

📢Evento: J en la playa
🗓️29 - 30 octubre 2026
🚩Palacio de Congresos de Torremolinos, Málaga
➡️Presencial y Online @JOTBConf #CitasOBSAE
👉https://t.co/pF3293b2qt

[J On The Beach @JOTBConf]

Your SDK has a new developer. And it may not be human.

Erica Pisani from @Sentry explores how LLMs and AI agents are changing the way we build and maintain open-source libraries at J On The Beach.

📍 Torremolinos · Oct 29–30

#OpenSource #AIAgents

[J On The Beach @JOTBConf]

The Doctor is HERE! @rolandkuhn is back at J On The Beach after missing last year.

He shows how Rust actors split pure computation from effects for deterministic simulation testing, using Cardano's Amaru node.

📍 Torremolinos · Oct 29–30

#RustLang #Actors

[J On The Beach @JOTBConf]

A great Yay-Yay Conf deserves a closing keynote that makes you see the world a little differently.

Valentina D'Efilippo, co-author of The Infographic History of the World, shows in "Let's Speak Data" how design and storytelling give data a voice.

#DataVisualisation #Data

[J On The Beach @JOTBConf]

.@codecentric is joining J On The Beach as a Bronze Sponsor!

German software consultancy with around 550 people, where up to 20% of working time goes to learning and conferences. Our kind of people.

📍 Torremolinos · Oct 29–30

#JOnTheBeach #codecentric

[J On The Beach @JOTBConf]

.@WeAreAdaptive, the team behind Aeron, is joining J On The Beach as a Bronze Sponsor!

If you're into high-performance messaging, come say hi. Thanks for supporting the community, Adaptive!

📍 Torremolinos · Oct 29–30

#JOnTheBeach #Aeron #DistributedSystems

[J On The Beach @JOTBConf]

Less than a month until the 10th J On The Beach!

Ticket prices just went up, but you can still grab yours. Don't be Papafrita!

Unemployed, or a student with no tech work experience? Apply for a free Tieso ticket!

📍 Torremolinos · Oct 29–30

#AI #Agents #DataEngineering

[J On The Beach @JOTBConf]

Two years later, Brooklyn Zelenka is back at J On The Beach.

Her talk on Keyhive: think Signal for documents. Local-first collaboration with end-to-end encryption, where permissions travel with the data.

📍 Torremolinos · Oct 29–30

#LocalFirst #Privacy #Scale #Security #Auth

[J On The Beach @JOTBConf]

OpenTelemetry gives you visibility...until it quietly eats the CPU and budget you need to run your systems.

Diana Todea from @VictoriaMetrics shows how to measure OTel's overhead and get it under control.

📍 Torremolinos · Oct 29–30

#OpenTelemetry #Observability

[J On The Beach @JOTBConf]

LLM apps are great...until OpenAI's agents break into Hugging Face and Australia's Medicare portal.

In Breaching LLM-Powered Applications, @BrianVerm from @snyksec shows how prompt injection, leaked keys and plain old security bugs can turn your AI against you.

#Cybersercurity

[Rüdiger Klaehn @klaehnr]

I will be in Bucharest at https://t.co/Ap48rYJRRD on October 16-17, doing a talk and an esp32 workshop about @iroh_n0.

Later I will be in Malaga on October 29-30 at @JOTBConf, talking about why we built iroh on QUIC.

[Wey Wey Web @WeyWeyWeb]

Howdy, UI lo<3rs!

@WeyWeyWeb is back in Torremolinos on 29–30 Oct, this time alongside @JOTBConf and @Lambda_World as The Yay-Yay Conf.

#UX, #Frontend, #a11y, #Product, #CSS, #JS and a healthy serving of #AI.

Bring the whole team to dance with us!

[Lambda World @Lambda_World]

FUNCTIONAL PROGRAMMERS OF THE WORLD, BEHOLD!

One of the few FP events left on Earth is landing in sunny Torremolinos this October.

Expect #FormalVerification, #TheoremProvers, #TypeSystems, #Lean, #Scala, #OCaml, #Erlang, #MoonBit and more.

Watch who’s joining us 👇

📅 Oct 29–30, 2026
🎟️ Get your ticket now!