Marcin Grzejszczak

I'm super happy to announce that my new workshops Java Microservices with Spring are live! ✨🚀 Read more about them here https://toomuchcoding.com/post/2025-12-17-new-course-is-live/ and please share 🙏 #java #Microservices #springframework

Hopefully you're having a great weekend! With your morning coffee If you could spare a few minutes to fill out the pre Java Microservices with Spring course I would be very grateful! maven.com/forms/bbafe1 #java #springframework

I’m shaping a practical course on Java + Spring microservices, built around real production challenges - service comms, metrics, tracing, resilience, and more.

If you’re working with microservices, what’s the biggest pain point you’d like help with?

Quick survey here: https://maven.com/forms/bbafe1

#java #springframework

I’m exploring a hands-on course on Java microservices with Spring-focused on real-world communication, observability, and reliability.

If you work with Java/Spring, I’d love to hear what challenges you’re facing.

Share your input: https://maven.com/forms/bbafe1

#Java #springframework

Another day, another post. This time about why in hashtag#SpringCloudContract 5 we're dropping the shaded module. https://toomuchcoding.com/post/2025-09-27-spring-cloud-contract-no-more-shade/ - please check it out and as usual provide feedback! #java #contracttests #springframework #springcloud #springboot

🧪 Observability of your Application
Lightning talk → Friday, July 25 @ 7PM GMT+2

I’ll show how to use Micrometer, metrics, traces, and logs to debug real latency and errors—fast.
Join here → https://maven.com/p/1dcc10/observability-of-your-application

#Observability #Java #Micrometer #SpringCloud

Do you know that #SpringCloud Sleuth has 1700 stars on Github. That's fantastic! But do you know that #MicrometerIO Tracing is a continuation of that project but is #SpringFramework agnostic and has only 170 stars! 😱 Please, give it some love and star it! https://github.com/micrometer-metrics/tracing

It's December which means that it's my work anniversary! I've joined the #SpringCloud team 8 years ago 😱 I've been working on #Observability and #ContractTesting for a decade now 😱 😱 It's been sheer pleasure to have been working with such fantastic coworkers and community!

Yay! #Couchbase (https://issues.couchbase.com/browse/JCBC-2046 ) and #Jersey (https://github.com/eclipse-ee4j/jersey/pull/5391 ) are natively supporting #MicrometerIO Observation! If you want us to help you instrument your project don't hesitate to ping us! https://github.com/micrometer-metrics/micrometer/blob/main/docs/modules/ROOT/pages/observation/projects.adoc #Java #Observability

Hey 👋 #SpringCloud Sleuth OTel 1.1.4 is on its way to Maven Central. You can check out the release notes here - https://github.com/spring-projects-experimental/spring-cloud-sleuth-otel/releases/tag/v1.1.4 #Java #Observability #OpenTelemetry

Hey 👋 I've got a small favour to ask 🙏 #SpringCloud Sleuth had over 1700 starts on Github. Its successor #MicrometerIO Tracing has over 70 😔 If you're into #java #observability can you please go here https://github.com/micrometer-metrics/tracing?utm_content=bufferbec0b&utm_medium=social&utm_source=bufferapp.com&utm_campaign=buffer and click the ⭐ button to the top right and start the project? Thank you! 😀

Hey 👋 #dou has published an article with me 😱 If you're 🇵🇱 or want to learn 🇵🇱 or know how to use a translator check it out here https://dou.eu/community/posts/how-to-create-tools-open-source?from=mp&utm_content=buffer32df1&utm_medium=social&utm_source=bufferapp.com&utm_campaign=buffer #SpringFramework #SpringBoot #SpringCloud #DistributedTracing

Hey 👋 I'm past #SpringIo23 and I can't get over it 😔 It was fantastic to see my friends and the community. Regardless, we need to go back to our work! If you're using #SpringCloud Sleuth, do you know that there's a migration guide to migrate to #MicrometerIo Tracing? Check the link in the comment 👇 #Java #DistributedTracing

Bye Barcelona 👋 it was fantastic to be there at #springio23 and talk to the #springframework, #springboot and #springcloud community and the team. We definitely need to this more often! Great work Sergi and see you next year (hopefully)! #Java

About to start my journey to #SpringIO Barcelona! Can't wait to discuss #Java #DistributedTracing #ContractTesting #SpringCloud #MicrometerIo with the community! Hold the conference and wait for me! 😬

Do you like to ✏️ project documentation? 😬 It's hard to keep the docs always up to date. Want to automate that? 🤔 With #MicrometerIo you can 😁! Tell us how your observations look like, we'll do the rest 💪! Attached #SpringCloud Task example #java #documentation #observability

Hey 👋 ! Have you done your #SpringBoot 3 migration already 😬 ? In the #SpringCloud team we've finally had some 🕐 to start migrating release tools to #SpringBoot 3.0 and #Java17. Check the PR https://github.com/spring-cloud/spring-cloud-release-tools/pull/255/?utm_content=bufferfeb47&utm_medium=social&utm_source=bufferapp.com&utm_campaign=buffer. Feel free to leave a review 😄 #Java #SpringBoot3Migration

Hey 👋 ! Are you migrating from #SpringBoot 2.x with #SpringCloud Sleuth to #SpringBoot 3.0 ? Configure Sleuth to be compatible with Boot 3 and you're ready to go! Check this migration guide https://github.com/micrometer-metrics/tracing/wiki/Spring-Cloud-Sleuth-3.1-Migration-Guide?utm_content=buffer30725&utm_medium=social&utm_source=bufferapp.com&utm_campaign=buffer for more information! #Java #Observability #DistributedTracing

Hey 👋 ! Have you heard about #ContractTesting 🤔 ? Do you know that you can use #SpringCloud Contract with non-Spring and non-JVM projects? Check this video from a couple of years ago that explains it all: https://www.youtube.com/watch?v=gqkh9fJvSrY . #SpringCloudContract #APItesting #Java

We're super excited to announce the release of #SpringCloud Sleuth #OpenTelemetry 1.1.3. Check the release notes for more information https://github.com/spring-projects-experimental/spring-cloud-sleuth-otel/releases/tag/v1.1.3 #Java #SpringFramework #SpringBoot

If you're interested in your first contribution into #OpenSource
#Java #SpringCloud , you can help us out with this one https://github.com/spring-cloud/spring-cloud-sleuth/issues/2246

With #ProjectReactor
3.5.3, #MicrometerIO
context propagation 1.0.2 core 1.10.4 and tracing 1.0.2 you'll be able to use the new propagation mechanism in reactor based apps that will give you even better experience than #SpringCloud
sleuth! Check https://micrometer.io/docs/observation#instrumentation_of_reactive_libraries for more information!