Alexander Schwartz
@ahus1.de
Web (ages), Java (years), Agile (repeatedly). Working for
Red Hat on the Keycloak project - views are my own - pronouns: he/him. Also on https://fosstodon.org/@ahus1 and https://ahus1.de
Red Hat on the Keycloak project - views are my own - pronouns: he/him. Also on https://fosstodon.org/@ahus1 and https://ahus1.de
Pinned
Alexander Schwartz
@ahus1.de
· Dec 31
Technical Writing with AsciiDoc and IntelliJ IDEA
Learn how to install IntelliJ and use it effectively for technical writing in AsciiDoc
www.udemy.com
Just sold: "Technical Writing with #AsciiDoc and #IntelliJIDEA" Udemy course Quote from a student: "It was very helpful even though I am working with IntelliJ since 2014"
www.udemy.com/course/techn...
www.udemy.com/course/techn...
Submit your talks to #KeycloakCon EU Amsterdam by Nov 02! Every talk accepted receives a free ticket to all of #KubeCon EU!
Submit your talks with #casestudies, #security best practices, #ITautomation, #AI as well as #audit and #compliance using #Keycloak!
www.keycloak.org/2025/10/keyc...
Submit your talks with #casestudies, #security best practices, #ITautomation, #AI as well as #audit and #compliance using #Keycloak!
www.keycloak.org/2025/10/keyc...
Submit your talks to KeycloakCon EU Amsterdam by Nov 02!
KeycloakCon is a half-day single-track conference that brings together the Keycloak community at KubeCon EU in Amsterdam.
www.keycloak.org
October 30, 2025 at 10:06 PM
Submit your talks to #KeycloakCon EU Amsterdam by Nov 02! Every talk accepted receives a free ticket to all of #KubeCon EU!
Submit your talks with #casestudies, #security best practices, #ITautomation, #AI as well as #audit and #compliance using #Keycloak!
www.keycloak.org/2025/10/keyc...
Submit your talks with #casestudies, #security best practices, #ITautomation, #AI as well as #audit and #compliance using #Keycloak!
www.keycloak.org/2025/10/keyc...
We scaled #Keycloak to 2_000 logins per second and 10_000 token refreshes per seconds on #AWS and it scaled linearly in our #loadtest! It performed just fine with the latest optimizations in v26.4.
What load do you run on Keycloak? Do you host your own #IAM?
www.keycloak.org/2025/10/keyc...
What load do you run on Keycloak? Do you host your own #IAM?
www.keycloak.org/2025/10/keyc...
Keycloak Performance Benchmarks: A Deep Dive into Scaling and Sizing (26.4)
Keycloak demonstrates near-linear vertical scaling, performs well in low-latency environments, and effectively offloads database usage with caching.
www.keycloak.org
October 2, 2025 at 3:54 PM
We scaled #Keycloak to 2_000 logins per second and 10_000 token refreshes per seconds on #AWS and it scaled linearly in our #loadtest! It performed just fine with the latest optimizations in v26.4.
What load do you run on Keycloak? Do you host your own #IAM?
www.keycloak.org/2025/10/keyc...
What load do you run on Keycloak? Do you host your own #IAM?
www.keycloak.org/2025/10/keyc...
#Keycloak 26.4 is out with a lot of new capabilities for your self-hosted #iam:
* #Passkeys
* Client Authentication to use #SPIFFE or #Kubernetes service account tokens
* #FAPI 2 Final
Read more the full release announcement: www.keycloak.org/2025/09/keyc...
* #Passkeys
* Client Authentication to use #SPIFFE or #Kubernetes service account tokens
* #FAPI 2 Final
Read more the full release announcement: www.keycloak.org/2025/09/keyc...
Keycloak 26.4.0 released
Passkeys integration (supported) * FAPI 2 Final (supported) * DPoP (supported) * FIPS 140-2 mode now supports EdDSA
www.keycloak.org
October 1, 2025 at 3:13 PM
#Keycloak 26.4 is out with a lot of new capabilities for your self-hosted #iam:
* #Passkeys
* Client Authentication to use #SPIFFE or #Kubernetes service account tokens
* #FAPI 2 Final
Read more the full release announcement: www.keycloak.org/2025/09/keyc...
* #Passkeys
* Client Authentication to use #SPIFFE or #Kubernetes service account tokens
* #FAPI 2 Final
Read more the full release announcement: www.keycloak.org/2025/09/keyc...
KeyConf #Amsterdam is happening tomorrow, and we're all looking forward to it for all things #Keycloak!
We will discuss everything #identity, #passkeys, #security, and #openidconnect. Join us on-site or in the #livestream: keyconf.dev!
We will discuss everything #identity, #passkeys, #security, and #openidconnect. Join us on-site or in the #livestream: keyconf.dev!
KeyConf25: Keycloak Community 1-Day-Conference
Our annual conference dedicated to the Keycloak users' community to interact, learn, share, and exchange notes on Keycloak IAM technology and use cases.
keyconf.dev
August 27, 2025 at 11:00 AM
KeyConf #Amsterdam is happening tomorrow, and we're all looking forward to it for all things #Keycloak!
We will discuss everything #identity, #passkeys, #security, and #openidconnect. Join us on-site or in the #livestream: keyconf.dev!
We will discuss everything #identity, #passkeys, #security, and #openidconnect. Join us on-site or in the #livestream: keyconf.dev!
#Keycloak at #FrOSCon - we shared how you can run a #sovereign identity management, and listened to the stories of those who are already using it.
Rewatch "Delegate #authentication and a lot more to Keycloak with #OpenIDConnect":
🎥 media.ccc.de/v/froscon202...
🎞️ speakerdeck.com/ahus1/delega...
Rewatch "Delegate #authentication and a lot more to Keycloak with #OpenIDConnect":
🎥 media.ccc.de/v/froscon202...
🎞️ speakerdeck.com/ahus1/delega...
Delegate authentication and a lot more to Keycloak with OpenID Connect
Authenticating users can start simple with a username and a password for each user. But you will also need to handle forgotten passwords ...
media.ccc.de
August 19, 2025 at 1:12 PM
#Keycloak at #FrOSCon - we shared how you can run a #sovereign identity management, and listened to the stories of those who are already using it.
Rewatch "Delegate #authentication and a lot more to Keycloak with #OpenIDConnect":
🎥 media.ccc.de/v/froscon202...
🎞️ speakerdeck.com/ahus1/delega...
Rewatch "Delegate #authentication and a lot more to Keycloak with #OpenIDConnect":
🎥 media.ccc.de/v/froscon202...
🎞️ speakerdeck.com/ahus1/delega...
Reposted by Alexander Schwartz
In Niedersachsen gibt es mit dem neuen Schuljahr das Fach „Christlicher Religionsunterricht“. Das fokussiert auf eine breite Wissensvermittlung.
Debatten um Religionsunterricht: Religiöse Bildung für alle
In Niedersachsen gibt es mit dem neuen Schuljahr das Fach „Christlicher Religionsunterricht“. Das fokussiert auf eine breite Wissensvermittlung.
taz.de
August 17, 2025 at 6:20 PM
In Niedersachsen gibt es mit dem neuen Schuljahr das Fach „Christlicher Religionsunterricht“. Das fokussiert auf eine breite Wissensvermittlung.
Reposted by Alexander Schwartz
@mikko.bsky.social keynote from @elbsides.bsky.social 2025 conference is now online on our YouTube channel - listen to this talk by a great thought leader and global security expert.
www.youtube.com/watch?v=wuIh...
www.youtube.com/watch?v=wuIh...
Mikko Hyppönen - Opening Keynote: What I’ve Learned
YouTube video by Elbsides
www.youtube.com
August 15, 2025 at 10:24 AM
@mikko.bsky.social keynote from @elbsides.bsky.social 2025 conference is now online on our YouTube channel - listen to this talk by a great thought leader and global security expert.
www.youtube.com/watch?v=wuIh...
www.youtube.com/watch?v=wuIh...
BRZ migrated the Austrian Business Service Portal with 2M+ users to #keycloak.
Read more in our latest #egovernment case study integrating 130+ public services which now uses Keycloak, microservices and #GitOps: www.keycloak.org/2025/08/brz-...
Read more in our latest #egovernment case study integrating 130+ public services which now uses Keycloak, microservices and #GitOps: www.keycloak.org/2025/08/brz-...
BRZ Keycloak case study published
BRZ migrated the Austrian Business Service Portal with 2M+ users to Keycloak.
www.keycloak.org
August 5, 2025 at 7:43 AM
BRZ migrated the Austrian Business Service Portal with 2M+ users to #keycloak.
Read more in our latest #egovernment case study integrating 130+ public services which now uses Keycloak, microservices and #GitOps: www.keycloak.org/2025/08/brz-...
Read more in our latest #egovernment case study integrating 130+ public services which now uses Keycloak, microservices and #GitOps: www.keycloak.org/2025/08/brz-...
Today I heard about the "Chatham House Rule" which is very different from the "Vegas Rule":
"[...] participants are free to use the information received, but neither the identity nor the affiliation of the speaker(s), nor that of any other participant, may be revealed."
"[...] participants are free to use the information received, but neither the identity nor the affiliation of the speaker(s), nor that of any other participant, may be revealed."
Chatham House Rule
The Chatham House Rule is used around the world to encourage inclusive and open dialogue in meetings.
www.chathamhouse.org
August 3, 2025 at 2:05 PM
Today I heard about the "Chatham House Rule" which is very different from the "Vegas Rule":
"[...] participants are free to use the information received, but neither the identity nor the affiliation of the speaker(s), nor that of any other participant, may be revealed."
"[...] participants are free to use the information received, but neither the identity nor the affiliation of the speaker(s), nor that of any other participant, may be revealed."
Reposted by Alexander Schwartz
Hello Elbsiders - Elbsides 2025 videos are uploaded & ready to view. Press ▶️ to be cured from FOMO by not attending Elbsides 2025 in person-watch & learn from our amazing speakers. Some speakers asked that their talks only be made available at a later date.
www.youtube.com/@elbsides78
#Elbsides2025
www.youtube.com/@elbsides78
#Elbsides2025
Elbsides
www.youtube.com
July 25, 2025 at 12:19 PM
Hello Elbsiders - Elbsides 2025 videos are uploaded & ready to view. Press ▶️ to be cured from FOMO by not attending Elbsides 2025 in person-watch & learn from our amazing speakers. Some speakers asked that their talks only be made available at a later date.
www.youtube.com/@elbsides78
#Elbsides2025
www.youtube.com/@elbsides78
#Elbsides2025
Meet #Keycloak at KubeCon India in August!
Keycloak will be part of this year’s #KubeCon edition in #Hyderabad, #India on August 6-7. A lot of people use Keycloak and develop extensions for Keycloak in India, so we are thrilled to connect with the community!
www.keycloak.org/2025/06/keyc...
Keycloak will be part of this year’s #KubeCon edition in #Hyderabad, #India on August 6-7. A lot of people use Keycloak and develop extensions for Keycloak in India, so we are thrilled to connect with the community!
www.keycloak.org/2025/06/keyc...
Meet Keycloak at KubeCon India in August
Keycloak will be at KubeCon India in Hyderabad! Join us for talks, and connect with maintainers and the community at the project pavillion!
www.keycloak.org
June 12, 2025 at 9:19 AM
Meet #Keycloak at KubeCon India in August!
Keycloak will be part of this year’s #KubeCon edition in #Hyderabad, #India on August 6-7. A lot of people use Keycloak and develop extensions for Keycloak in India, so we are thrilled to connect with the community!
www.keycloak.org/2025/06/keyc...
Keycloak will be part of this year’s #KubeCon edition in #Hyderabad, #India on August 6-7. A lot of people use Keycloak and develop extensions for Keycloak in India, so we are thrilled to connect with the community!
www.keycloak.org/2025/06/keyc...
Reposted by Alexander Schwartz
Did you see who're on the program? It's the formidable @cryptax.bsky.social doing a closing keynote!
Also, donno who this Hyppönen guy is, but since he's opening @elbsides.bsky.social I predict a great future for him...
www.elbsides.eu/2025/#program
Also, donno who this Hyppönen guy is, but since he's opening @elbsides.bsky.social I predict a great future for him...
www.elbsides.eu/2025/#program
June 10, 2025 at 9:15 PM
Did you see who're on the program? It's the formidable @cryptax.bsky.social doing a closing keynote!
Also, donno who this Hyppönen guy is, but since he's opening @elbsides.bsky.social I predict a great future for him...
www.elbsides.eu/2025/#program
Also, donno who this Hyppönen guy is, but since he's opening @elbsides.bsky.social I predict a great future for him...
www.elbsides.eu/2025/#program
Reposted by Alexander Schwartz
Und genau deswegen gibt es in Hamburg am 13.Juni die Elbsides 2025 Konferenz - wo sich Experten über laufende und kommende Gefahren austauschen und Networking großgeschrieben wird. Die Konferenzvorträge werden in Englisch gehalten. www.elbsides.eu/2025/registr...
#Tagesschau #LageberichtCybercrime
#Tagesschau #LageberichtCybercrime
Lagebild Cybercrime: Weiterhin hohe Bedrohungslage
Deutschland steht im Fokus von Cyberkriminellen: Laut dem Lagebild Cybercrime liegt die Bedrohung auf hohem Niveau, die Angriffe aus dem Ausland nehmen weiter zu. Innenminister Dobrindt will im Kampf ...
www.tagesschau.de
June 3, 2025 at 7:15 PM
Und genau deswegen gibt es in Hamburg am 13.Juni die Elbsides 2025 Konferenz - wo sich Experten über laufende und kommende Gefahren austauschen und Networking großgeschrieben wird. Die Konferenzvorträge werden in Englisch gehalten. www.elbsides.eu/2025/registr...
#Tagesschau #LageberichtCybercrime
#Tagesschau #LageberichtCybercrime
Reposted by Alexander Schwartz
We rebuilt GitHub Issues search to make it faster, more flexible, and now powerful with nested queries and boolean operators! 🔎
Take a look at the engineering behind this revamp and then try out the advanced search syntax for yourself to find exactly what you need. ⬇️
Take a look at the engineering behind this revamp and then try out the advanced search syntax for yourself to find exactly what you need. ⬇️
GitHub Issues search now supports nested queries and boolean operators: Here's how we (re)built it
Building this feature presented significant challenges. We're excited to take you behind the scenes.
github.blog
May 25, 2025 at 9:53 PM
We rebuilt GitHub Issues search to make it faster, more flexible, and now powerful with nested queries and boolean operators! 🔎
Take a look at the engineering behind this revamp and then try out the advanced search syntax for yourself to find exactly what you need. ⬇️
Take a look at the engineering behind this revamp and then try out the advanced search syntax for yourself to find exactly what you need. ⬇️
The @opentalk.eu videoconferencing solution needed a secure and scalable Identity and Access Management (IAM) solution to authenticate users across various services and chose to use #Keycloak.
Read more on their challenges and the solution our #CNCF case study!
www.keycloak.org/2025/05/open...
Read more on their challenges and the solution our #CNCF case study!
www.keycloak.org/2025/05/open...
OpenTalk Keycloak case study published
OpenTalk, a videoconferencing solution, needed a secure and scalable Identity and Access Management (IAM) solution to authenticate users and chose Keycloak.
www.keycloak.org
May 15, 2025 at 4:20 PM
The @opentalk.eu videoconferencing solution needed a secure and scalable Identity and Access Management (IAM) solution to authenticate users across various services and chose to use #Keycloak.
Read more on their challenges and the solution our #CNCF case study!
www.keycloak.org/2025/05/open...
Read more on their challenges and the solution our #CNCF case study!
www.keycloak.org/2025/05/open...
Achieving Fine-Grained Authorization in #Keycloak
Keycloak is leveling up administrative access control. A major step towards introducing delegated administration to Keycloak so that server administrators can assign management privileges to other users in a realm!
www.keycloak.org/2025/05/fgap...
Keycloak is leveling up administrative access control. A major step towards introducing delegated administration to Keycloak so that server administrators can assign management privileges to other users in a realm!
www.keycloak.org/2025/05/fgap...
Beyond Roles: Achieving Fine-Grained Authorization with Keycloak
Keycloak's latest release introduces new suported version of long-in-preview feature fine-grained admin permissions.
www.keycloak.org
May 15, 2025 at 3:44 PM
Achieving Fine-Grained Authorization in #Keycloak
Keycloak is leveling up administrative access control. A major step towards introducing delegated administration to Keycloak so that server administrators can assign management privileges to other users in a realm!
www.keycloak.org/2025/05/fgap...
Keycloak is leveling up administrative access control. A major step towards introducing delegated administration to Keycloak so that server administrators can assign management privileges to other users in a realm!
www.keycloak.org/2025/05/fgap...
Reposted by Alexander Schwartz
Q&A from a talk I gave last week.
Q: "What do you think is the biggest threat in cybersecurity right now? Is it post-quantum computing? Is it AI?"
A: Fascism. It's fascism.
Q: "What do you think is the biggest threat in cybersecurity right now? Is it post-quantum computing? Is it AI?"
A: Fascism. It's fascism.
May 14, 2025 at 4:07 AM
Q&A from a talk I gave last week.
Q: "What do you think is the biggest threat in cybersecurity right now? Is it post-quantum computing? Is it AI?"
A: Fascism. It's fascism.
Q: "What do you think is the biggest threat in cybersecurity right now? Is it post-quantum computing? Is it AI?"
A: Fascism. It's fascism.
Reposted by Alexander Schwartz
Wir wollen von Kindern wissen, welche Fragen sie beschäftigen. Jede Woche beantworten wir eine. Diese Frage kommt von Claire, 7 Jahre alt.
Kinder fragen, die taz antwortet: Was soll man eigentlich auf „Na?“ antworten?
taz.de
May 4, 2025 at 3:34 PM
Wir wollen von Kindern wissen, welche Fragen sie beschäftigen. Jede Woche beantworten wir eine. Diese Frage kommt von Claire, 7 Jahre alt.
"Prepare your application landscape for #zerotrust with #Keycloak 26.2" - Read about our latest release in our summary on the #CNCF blog!
www.cncf.io/blog/2025/04...
www.cncf.io/blog/2025/04...
Prepare your application landscape for zero trust with Keycloak 26.2
Strong identity and access management is a key component of a zero trust architecture for cloud native applications. Keycloak is well-known for its single-sign-on capabilities based on open standards.
www.cncf.io
April 28, 2025 at 7:26 PM
"Prepare your application landscape for #zerotrust with #Keycloak 26.2" - Read about our latest release in our summary on the #CNCF blog!
www.cncf.io/blog/2025/04...
www.cncf.io/blog/2025/04...
Observability in Keycloak 26.2 - are you doing well?
In the latest Keycloak release 26.2, #observability straightforward and works without additional extensions. Read more in our latest blog post about #ServiceLevelIndicators, metrics, traces, logs and dashboards.
www.keycloak.org/2025/04/obse...
In the latest Keycloak release 26.2, #observability straightforward and works without additional extensions. Read more in our latest blog post about #ServiceLevelIndicators, metrics, traces, logs and dashboards.
www.keycloak.org/2025/04/obse...
Observability in Keycloak 26.2
Observability improved a lot in Keycloak's latest release. Learn what changed in this post and in our online meetup on 7th May 2025.
www.keycloak.org
April 24, 2025 at 6:51 AM
Observability in Keycloak 26.2 - are you doing well?
In the latest Keycloak release 26.2, #observability straightforward and works without additional extensions. Read more in our latest blog post about #ServiceLevelIndicators, metrics, traces, logs and dashboards.
www.keycloak.org/2025/04/obse...
In the latest Keycloak release 26.2, #observability straightforward and works without additional extensions. Read more in our latest blog post about #ServiceLevelIndicators, metrics, traces, logs and dashboards.
www.keycloak.org/2025/04/obse...
Our #Keycloak highlights from #Kubecon EU London! Watch the recoded talk about #OpenIDConnect and #Observability, and join our survey at www.keycloak.org/2025/04/keyc...
Keycloak at KubeCon EU 2025
Keycloak had a very active presence at this year's KubeCon EU in London. Watch the recorded talk, and learn about upcoming events.
www.keycloak.org
April 17, 2025 at 3:23 PM
Our #Keycloak highlights from #Kubecon EU London! Watch the recoded talk about #OpenIDConnect and #Observability, and join our survey at www.keycloak.org/2025/04/keyc...
🚢 #Keycloak shipped release 26.2 today! 🚢
Pimp your #SingleSignOn!
* Least-privileged delegated access without service desk tickets.
* Enhanced token-exchange.
* Pre-defined #Grafana dashboard.
* Simplified update and configuration.
www.keycloak.org/2025/04/keyc...
Pimp your #SingleSignOn!
* Least-privileged delegated access without service desk tickets.
* Enhanced token-exchange.
* Pre-defined #Grafana dashboard.
* Simplified update and configuration.
www.keycloak.org/2025/04/keyc...
Keycloak 26.2.0 released
Supported Standard Token Exchange * Fine-grained admin permissions supported * Guides for metrics and Grafana dashboards * Zero-configuration secure cluster communication
www.keycloak.org
April 11, 2025 at 2:38 PM
🚢 #Keycloak shipped release 26.2 today! 🚢
Pimp your #SingleSignOn!
* Least-privileged delegated access without service desk tickets.
* Enhanced token-exchange.
* Pre-defined #Grafana dashboard.
* Simplified update and configuration.
www.keycloak.org/2025/04/keyc...
Pimp your #SingleSignOn!
* Least-privileged delegated access without service desk tickets.
* Enhanced token-exchange.
* Pre-defined #Grafana dashboard.
* Simplified update and configuration.
www.keycloak.org/2025/04/keyc...
Translating #Keycloak with #Weblate
Keycloak runs in a lot of regions and countries.
For translations, Keycloak now integrates with Weblate to simplify the process.
Join us in the upcoming episode of Keycloak Hour of Code on Apr 14/15!
www.keycloak.org/2025/04/webl...
Keycloak runs in a lot of regions and countries.
For translations, Keycloak now integrates with Weblate to simplify the process.
Join us in the upcoming episode of Keycloak Hour of Code on Apr 14/15!
www.keycloak.org/2025/04/webl...
Translating Keycloak with Weblate
Translating Keycloak is a collaborative effort. With Weblate this is now more effective than ever.
www.keycloak.org
April 7, 2025 at 11:00 AM
Translating #Keycloak with #Weblate
Keycloak runs in a lot of regions and countries.
For translations, Keycloak now integrates with Weblate to simplify the process.
Join us in the upcoming episode of Keycloak Hour of Code on Apr 14/15!
www.keycloak.org/2025/04/webl...
Keycloak runs in a lot of regions and countries.
For translations, Keycloak now integrates with Weblate to simplify the process.
Join us in the upcoming episode of Keycloak Hour of Code on Apr 14/15!
www.keycloak.org/2025/04/webl...
Reposted by Alexander Schwartz
"Authenticate and authorize users your way" - Thanks for having my talk at Voxxed Days Zurich #VDZ25 presenting #OpenIDConnect and #Keycloak.
youtu.be/SR59HPXyQSE?...
Slides: speakerdeck.com/ahus1/delega...
youtu.be/SR59HPXyQSE?...
Slides: speakerdeck.com/ahus1/delega...
Authenticate and authorize users “your way” when they access your appl & platf - Alexander Schwartz
YouTube video by Devoxx
youtu.be
April 2, 2025 at 12:52 PM
"Authenticate and authorize users your way" - Thanks for having my talk at Voxxed Days Zurich #VDZ25 presenting #OpenIDConnect and #Keycloak.
youtu.be/SR59HPXyQSE?...
Slides: speakerdeck.com/ahus1/delega...
youtu.be/SR59HPXyQSE?...
Slides: speakerdeck.com/ahus1/delega...
Reposted by Alexander Schwartz
You can hear me jabber on wonders and horrors of AI on this Infoq podcast.
Talk about how my work on Quarkus and JBang is driven on bringing developer joy to Java
www.infoq.com/podcasts/sim...
Thanks to Olimpiu Pop and Infoq editors.
Talk about how my work on Quarkus and JBang is driven on bringing developer joy to Java
www.infoq.com/podcasts/sim...
Thanks to Olimpiu Pop and Infoq editors.
Simplify Your System By Challenging The Status-Quo And Learning From Other Ecosystems
In this podcast, Max Rydahl Andersen, distinguished engineer at RedHat and the creator of JBang discusses how continuously learning from other ecosystems and adopting new tools allows you to simplify…
www.infoq.com
March 28, 2025 at 5:09 PM
You can hear me jabber on wonders and horrors of AI on this Infoq podcast.
Talk about how my work on Quarkus and JBang is driven on bringing developer joy to Java
www.infoq.com/podcasts/sim...
Thanks to Olimpiu Pop and Infoq editors.
Talk about how my work on Quarkus and JBang is driven on bringing developer joy to Java
www.infoq.com/podcasts/sim...
Thanks to Olimpiu Pop and Infoq editors.