Rustam Mehmandarov
@rustam.no
Passionate computer scientist 📍🇳🇴
Java Champion ☕ | Google Developer Expert (GDE) for Cloud ⛅ | Docker Captain 🐳 | Public speaker 🎙️ | Mentor & Community leader 🌟 | All things Java, Cloud, AI/ML, data, & open source | Ex-leader of JavaZone & javaBin.
Java Champion ☕ | Google Developer Expert (GDE) for Cloud ⛅ | Docker Captain 🐳 | Public speaker 🎙️ | Mentor & Community leader 🌟 | All things Java, Cloud, AI/ML, data, & open source | Ex-leader of JavaZone & javaBin.
Thrilled to be recognized as a Most Active Speaker by @sessionize.com again! 🏆
The badge is great, but the real wins are the deep tech talks, the "hallway tracks," and the friendships made along the way.
Thanks to every organizer and attendee.
Here’s to another year of building together! 🚀
#GDE
The badge is great, but the real wins are the deep tech talks, the "hallway tracks," and the friendships made along the way.
Thanks to every organizer and attendee.
Here’s to another year of building together! 🚀
#GDE
January 13, 2026 at 11:29 AM
Thrilled to be recognized as a Most Active Speaker by @sessionize.com again! 🏆
The badge is great, but the real wins are the deep tech talks, the "hallway tracks," and the friendships made along the way.
Thanks to every organizer and attendee.
Here’s to another year of building together! 🚀
#GDE
The badge is great, but the real wins are the deep tech talks, the "hallway tracks," and the friendships made along the way.
Thanks to every organizer and attendee.
Here’s to another year of building together! 🚀
#GDE
I can’t believe @jfokus.se is just a month away! 🇸🇪
This year is special because they are celebrating their 20th anniversary! 🎉 It’s going to be packed with Java Champions and JVM experts.
Grab your ticket while you still can: 🔗 jfokus.se
See you in Stockholm? ☕️
#Java #Jfokus #Jfokus2026 #JVM
This year is special because they are celebrating their 20th anniversary! 🎉 It’s going to be packed with Java Champions and JVM experts.
Grab your ticket while you still can: 🔗 jfokus.se
See you in Stockholm? ☕️
#Java #Jfokus #Jfokus2026 #JVM
Jfokus Developers Conference
Sweden's largest developer conference focusing on Java, AI/ML, DevOps, and emerging technologies.
jfokus.se
January 7, 2026 at 9:10 PM
I can’t believe @jfokus.se is just a month away! 🇸🇪
This year is special because they are celebrating their 20th anniversary! 🎉 It’s going to be packed with Java Champions and JVM experts.
Grab your ticket while you still can: 🔗 jfokus.se
See you in Stockholm? ☕️
#Java #Jfokus #Jfokus2026 #JVM
This year is special because they are celebrating their 20th anniversary! 🎉 It’s going to be packed with Java Champions and JVM experts.
Grab your ticket while you still can: 🔗 jfokus.se
See you in Stockholm? ☕️
#Java #Jfokus #Jfokus2026 #JVM
Register for jChampions 2026 - a free virtual conference, running this year on January 22, 23, 26, and 27. See you there? 🙌
🌐 JChampions Conf: jchampionsconf.com
📺 YouTube Channel: www.youtube.com/@JChampionsC...
🎟️ Tickets: www.eventbrite.com/e/jchampions...
#Java #JavaChampions #developers #JVM
🌐 JChampions Conf: jchampionsconf.com
📺 YouTube Channel: www.youtube.com/@JChampionsC...
🎟️ Tickets: www.eventbrite.com/e/jchampions...
#Java #JavaChampions #developers #JVM
JChampions Conference
Conference organized by Java Champions and featuring Java Champions in the presentations.
jchampionsconf.com
January 5, 2026 at 8:39 AM
Register for jChampions 2026 - a free virtual conference, running this year on January 22, 23, 26, and 27. See you there? 🙌
🌐 JChampions Conf: jchampionsconf.com
📺 YouTube Channel: www.youtube.com/@JChampionsC...
🎟️ Tickets: www.eventbrite.com/e/jchampions...
#Java #JavaChampions #developers #JVM
🌐 JChampions Conf: jchampionsconf.com
📺 YouTube Channel: www.youtube.com/@JChampionsC...
🎟️ Tickets: www.eventbrite.com/e/jchampions...
#Java #JavaChampions #developers #JVM
Free Kindle version! #Java Data Structures, using #EclipseCollections.
For my first holiday season as a published author, I'll be giving out a few copies of the hardcover version of my book, to friends & family.
🎁 In the spirit of giving, the Amazon Kindle version of my book will be FREE on Dec. 24th and 25th, 2025, and Jan. 1st, 2026. 🎁
Happy Holidays!!! 🎅🎄🥂
🎁 In the spirit of giving, the Amazon Kindle version of my book will be FREE on Dec. 24th and 25th, 2025, and Jan. 1st, 2026. 🎁
Happy Holidays!!! 🎅🎄🥂
December 13, 2025 at 6:48 PM
Free Kindle version! #Java Data Structures, using #EclipseCollections.
Reposted by Rustam Mehmandarov
My latest blog: One Positive Effect of Java 25 with Compact Object Headers Enabled
donraab.medium.com/one-positive...
donraab.medium.com/one-positive...
One Positive Effect of Java 25 with Compact Object Headers Enabled
Measuring the memory cost of ArrayList and Eclipse Collections FastList
donraab.medium.com
December 5, 2025 at 4:50 AM
My latest blog: One Positive Effect of Java 25 with Compact Object Headers Enabled
donraab.medium.com/one-positive...
donraab.medium.com/one-positive...
Reposted by Rustam Mehmandarov
Happening NOW!
Join the largest virtual gathering for the Jakarta EE and Java community, the JakartaOne Livestream conference.
Join live: www.youtube.com/live/KoUFAk3...
Join the largest virtual gathering for the Jakarta EE and Java community, the JakartaOne Livestream conference.
Join live: www.youtube.com/live/KoUFAk3...
December 2, 2025 at 12:15 PM
Happening NOW!
Join the largest virtual gathering for the Jakarta EE and Java community, the JakartaOne Livestream conference.
Join live: www.youtube.com/live/KoUFAk3...
Join the largest virtual gathering for the Jakarta EE and Java community, the JakartaOne Livestream conference.
Join live: www.youtube.com/live/KoUFAk3...
Reposted by Rustam Mehmandarov
On Cyber Monday, the Kindle version of "Eclipse Collections Categorically: Level up your programming game" will be $0 to buy.
Offer begins 12:00am PST & ends at 11:59pm PST on Dec. 1, 2025. Mark your calendar, & share w/ folks who like unique tech books. 🙏
www.amazon.com/Eclipse-Coll...
Offer begins 12:00am PST & ends at 11:59pm PST on Dec. 1, 2025. Mark your calendar, & share w/ folks who like unique tech books. 🙏
www.amazon.com/Eclipse-Coll...
Eclipse Collections Categorically: Level up your programming game
Eclipse Collections Categorically: Level up your programming game - Kindle edition by Raab, Donald. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Eclipse Collections Categorically: Level up your programming game.
www.amazon.com
November 27, 2025 at 2:38 AM
On Cyber Monday, the Kindle version of "Eclipse Collections Categorically: Level up your programming game" will be $0 to buy.
Offer begins 12:00am PST & ends at 11:59pm PST on Dec. 1, 2025. Mark your calendar, & share w/ folks who like unique tech books. 🙏
www.amazon.com/Eclipse-Coll...
Offer begins 12:00am PST & ends at 11:59pm PST on Dec. 1, 2025. Mark your calendar, & share w/ folks who like unique tech books. 🙏
www.amazon.com/Eclipse-Coll...
Reposted by Rustam Mehmandarov
The Kindle version of "Eclipse Collections Categorically is being offered at a special price today on Amazon. There's less than 20 hours left today to buy a copy of the Kindle version for $0. Good luck and enjoy! 🙏
November 20, 2025 at 1:20 PM
The Kindle version of "Eclipse Collections Categorically is being offered at a special price today on Amazon. There's less than 20 hours left today to buy a copy of the Kindle version for $0. Good luck and enjoy! 🙏
Reposted by Rustam Mehmandarov
⚡ Java in the cloud can be blazing fast.
At #Devnexus, @rustam.no breaks down serverless, Native Image, and CRaC — and how each unlocks next-level performance.
devnexus.com/events/java-...
🎟️ Get tickets at devnexus.com
📨 Sign up atlj.ug/DevnexusConn...
At #Devnexus, @rustam.no breaks down serverless, Native Image, and CRaC — and how each unlocks next-level performance.
devnexus.com/events/java-...
🎟️ Get tickets at devnexus.com
📨 Sign up atlj.ug/DevnexusConn...
November 18, 2025 at 5:05 PM
⚡ Java in the cloud can be blazing fast.
At #Devnexus, @rustam.no breaks down serverless, Native Image, and CRaC — and how each unlocks next-level performance.
devnexus.com/events/java-...
🎟️ Get tickets at devnexus.com
📨 Sign up atlj.ug/DevnexusConn...
At #Devnexus, @rustam.no breaks down serverless, Native Image, and CRaC — and how each unlocks next-level performance.
devnexus.com/events/java-...
🎟️ Get tickets at devnexus.com
📨 Sign up atlj.ug/DevnexusConn...
Reposted by Rustam Mehmandarov
Sponsoring #Devnexus 2026 means putting your brand or product in front of thousands of developers, engineers, and tech leaders shaping the future of technology. 💻
Visibility, credibility, and real connections, all in one event. 🚀
Click here for a prospectus ajug.typeform.com/to/BTa7bZ
Visibility, credibility, and real connections, all in one event. 🚀
Click here for a prospectus ajug.typeform.com/to/BTa7bZ
November 11, 2025 at 5:06 PM
Sponsoring #Devnexus 2026 means putting your brand or product in front of thousands of developers, engineers, and tech leaders shaping the future of technology. 💻
Visibility, credibility, and real connections, all in one event. 🚀
Click here for a prospectus ajug.typeform.com/to/BTa7bZ
Visibility, credibility, and real connections, all in one event. 🚀
Click here for a prospectus ajug.typeform.com/to/BTa7bZ
Reposted by Rustam Mehmandarov
🚀 Faster startup, stronger performance! At #Devnexus, @theguywiththeduketattoo.com & @rustam.no showcased how CRaC and Jakarta EE bring new power to Java apps.
Catch the recap ⤵️
devnexus.org/posts/duke-o...
💥 Don’t miss Devnexus 2026 — where Java’s future comes alive!
Catch the recap ⤵️
devnexus.org/posts/duke-o...
💥 Don’t miss Devnexus 2026 — where Java’s future comes alive!
Duke on CRaC with Jakarta EE with Rustam Mehmandarov and Ivar Grimstad
For Java developers, slow startup times have long been the Achilles’ heel of deploying microservices in the cloud. In serverless and containerized environmen...
devnexus.org
October 29, 2025 at 5:30 PM
🚀 Faster startup, stronger performance! At #Devnexus, @theguywiththeduketattoo.com & @rustam.no showcased how CRaC and Jakarta EE bring new power to Java apps.
Catch the recap ⤵️
devnexus.org/posts/duke-o...
💥 Don’t miss Devnexus 2026 — where Java’s future comes alive!
Catch the recap ⤵️
devnexus.org/posts/duke-o...
💥 Don’t miss Devnexus 2026 — where Java’s future comes alive!
Thank you for having me, @cloudnativebergen.dev! What an event! 🤩 It was great to be back again – this time with a workshop and a talk on #Cloud, #CloudNative apps, #GoogleCloud and #AI. Thank you to all the organisers, fellow speakers, volunteers, and attendees! Hope to see you all again soon! 🙌
October 28, 2025 at 4:51 PM
Thank you for having me, @cloudnativebergen.dev! What an event! 🤩 It was great to be back again – this time with a workshop and a talk on #Cloud, #CloudNative apps, #GoogleCloud and #AI. Thank you to all the organisers, fellow speakers, volunteers, and attendees! Hope to see you all again soon! 🙌
Reposted by Rustam Mehmandarov
The first day of Cloud Native Day Bergen 2025 has already started with good help from our Volunteers! @rawkode.dev , @sindre.bsky.social , @eyeveebee.bsky.social , @rustam.no , @taniaholst.bsky.social, and many more are running their workshops today 🚀 #cndb2025 #cloudnative
October 27, 2025 at 10:24 AM
The first day of Cloud Native Day Bergen 2025 has already started with good help from our Volunteers! @rawkode.dev , @sindre.bsky.social , @eyeveebee.bsky.social , @rustam.no , @taniaholst.bsky.social, and many more are running their workshops today 🚀 #cndb2025 #cloudnative
Happy birthday to the one and only @sharatchander.bsky.social! Enjoy your cake day! 🥳🧁🎉🎂 Thank you for all you're doing for the #Java community! ☕
September 9, 2025 at 5:58 PM
Happy birthday to the one and only @sharatchander.bsky.social! Enjoy your cake day! 🥳🧁🎉🎂 Thank you for all you're doing for the #Java community! ☕
Woho! 🎉 @devbcn.bsky.social turns 10 this year! 🎉 I am glad to be back in Barcelona yet again to run a workshop on optimising Java apps for the Cloud, and running it all on Google Cloud.
Join me 👉 www.devbcn.com/talk/825146
#java #cloud #googlecloud #quarkus #graalvm #openliberty
Join me 👉 www.devbcn.com/talk/825146
#java #cloud #googlecloud #quarkus #graalvm #openliberty
July 7, 2025 at 2:56 PM
Woho! 🎉 @devbcn.bsky.social turns 10 this year! 🎉 I am glad to be back in Barcelona yet again to run a workshop on optimising Java apps for the Cloud, and running it all on Google Cloud.
Join me 👉 www.devbcn.com/talk/825146
#java #cloud #googlecloud #quarkus #graalvm #openliberty
Join me 👉 www.devbcn.com/talk/825146
#java #cloud #googlecloud #quarkus #graalvm #openliberty
Reposted by Rustam Mehmandarov
WeAreDevelopers World Congress 2025 takes place from July 9 - 11 in Berlin, Germany.
Book your spot now and meet Oracle ACEs @theguywiththeduketattoo.com and @rustam.no ♠️ 👉
www.wearedevelopers.com/world-congress
#OracleACE
Book your spot now and meet Oracle ACEs @theguywiththeduketattoo.com and @rustam.no ♠️ 👉
www.wearedevelopers.com/world-congress
#OracleACE
July 7, 2025 at 2:26 PM
WeAreDevelopers World Congress 2025 takes place from July 9 - 11 in Berlin, Germany.
Book your spot now and meet Oracle ACEs @theguywiththeduketattoo.com and @rustam.no ♠️ 👉
www.wearedevelopers.com/world-congress
#OracleACE
Book your spot now and meet Oracle ACEs @theguywiththeduketattoo.com and @rustam.no ♠️ 👉
www.wearedevelopers.com/world-congress
#OracleACE
This is so cool! "Get the location of the ISS using DNS" 🤓🚀 shkspr.mobi/blog/2025/07...
shkspr.mobi
July 6, 2025 at 4:01 PM
This is so cool! "Get the location of the ISS using DNS" 🤓🚀 shkspr.mobi/blog/2025/07...
Reposted by Rustam Mehmandarov
The Kindle edition of my book, "Eclipse Collections Categorically: Level up your programming game" is now available! Enjoy! 🙏
www.amazon.com/Eclipse-Coll...
www.amazon.com/Eclipse-Coll...
Eclipse Collections Categorically: Level up your programming game
Eclipse Collections Categorically: Level up your programming game - Kindle edition by Raab, Donald. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Eclipse Collections Categorically: Level up your programming game.
www.amazon.com
July 1, 2025 at 8:03 PM
The Kindle edition of my book, "Eclipse Collections Categorically: Level up your programming game" is now available! Enjoy! 🙏
www.amazon.com/Eclipse-Coll...
www.amazon.com/Eclipse-Coll...
We had great fun recording an episode with my fantastic friends, amazing engineers, and community heroes Mohammed Aboullaite and Carlos Sanchez (@csanchez.org) We talked about #AI, #Gemma, career growth, #Java and everything in between, all here in Berlin, at #GoogleIOConnect. 🎧 🤓
June 25, 2025 at 2:43 PM
We had great fun recording an episode with my fantastic friends, amazing engineers, and community heroes Mohammed Aboullaite and Carlos Sanchez (@csanchez.org) We talked about #AI, #Gemma, career growth, #Java and everything in between, all here in Berlin, at #GoogleIOConnect. 🎧 🤓
Trying out Veo2. It's getting quite real. #BuiltWithGemini #GoogleIOConnect
June 25, 2025 at 7:47 AM
Trying out Veo2. It's getting quite real. #BuiltWithGemini #GoogleIOConnect
Reposted by Rustam Mehmandarov
Blog: Foreword and Onward to Your Next Connection
I share advice & personal examples of connections I've made over 25 years. 🙏
@josepaumard.bsky.social @venkats.bsky.social @zakhav.bsky.social @sharatchander.bsky.social @malagupta.bsky.social @loiane.bsky.social
donraab.medium.com/foreword-and...
I share advice & personal examples of connections I've made over 25 years. 🙏
@josepaumard.bsky.social @venkats.bsky.social @zakhav.bsky.social @sharatchander.bsky.social @malagupta.bsky.social @loiane.bsky.social
donraab.medium.com/foreword-and...
Foreword and Onward to Your Next Connection
The connections in your network are important to discover and invest in.
donraab.medium.com
June 14, 2025 at 6:08 PM
Blog: Foreword and Onward to Your Next Connection
I share advice & personal examples of connections I've made over 25 years. 🙏
@josepaumard.bsky.social @venkats.bsky.social @zakhav.bsky.social @sharatchander.bsky.social @malagupta.bsky.social @loiane.bsky.social
donraab.medium.com/foreword-and...
I share advice & personal examples of connections I've made over 25 years. 🙏
@josepaumard.bsky.social @venkats.bsky.social @zakhav.bsky.social @sharatchander.bsky.social @malagupta.bsky.social @loiane.bsky.social
donraab.medium.com/foreword-and...
🥳🥳🥳
#LangChain4j 1.1.0 is out! 🎉
This release includes the next batch of RC1 modules, along with some great new features!
github.com/langchain4j/...
This release includes the next batch of RC1 modules, along with some great new features!
github.com/langchain4j/...
Release 1.1.0, 1.1.0-rc1 and 1.1.0-beta7 · langchain4j/langchain4j
Announcements
We are excited to announce the release of version 1.1.0-rc1 (release candidate 1) for the next set of modules:
langchain4j-anthropic
langchain4j-azure-open-ai
langchain4j-bedrock
lan...
github.com
June 19, 2025 at 2:03 PM
🥳🥳🥳
Join me in Colorado Springs and learn more about #CloudNative #Java!
Use the code below for a really nice discount! 🎫🎟️
Can't wait to see you all! 🤩🌟🙌
Use the code below for a really nice discount! 🎫🎟️
Can't wait to see you all! 🤩🌟🙌
June 18, 2025 at 9:01 PM
Join me in Colorado Springs and learn more about #CloudNative #Java!
Use the code below for a really nice discount! 🎫🎟️
Can't wait to see you all! 🤩🌟🙌
Use the code below for a really nice discount! 🎫🎟️
Can't wait to see you all! 🤩🌟🙌
I'm super happy that I can share that the FREE FULL VERSION of Quarkus in Action continues to be available until January 16, 2026!!!
Download and share!
developers.redhat.com/e-books/quar...
Thanks to Red Hat developer!!!
Download and share!
developers.redhat.com/e-books/quar...
Thanks to Red Hat developer!!!
Quarkus in Action | Red Hat Developer
Download Quarkus in Action, a practical guide to building resilient and scalable, cloud-native, enterprise Java applications using the Quarkus framework
developers.redhat.com
June 16, 2025 at 6:20 PM