🍁 Hello dear Fullstackers!
A new month begins — and with it, a chance to go beyond backend. 🚀 This edition is all about expanding horizons: not just writing code, but understanding the bigger picture — streaming, cloud-native design, agility, and teamwork.
💡 “The more you know, the more you can create. There’s no end to imagination in software.” — Linus Torvalds
In this week’s newsletter, you’ll find:
- ☕ Micrometer metric in SpringBoot
- ☸️ Manage config
- 🔄 stream map
- 👥 fear of conflict & Backlog: everyone responsability
- 😂 😱😭🤕 Ouch : #developer on #friday versus the #team
Keep learning, keep building, and keep growing — because being fullstack means never stopping at “just backend.” 💪
#kafka
You need a stateless change on every record, then write to a new topic. Which Kafka Streams op do you use?
🔁 map
➕ reduce
🔂 through
🚫 filter
Answer: ✅ map
Why:
map transforms each record (key/value → new key/value).
It’s stateless (no stored state).
Then you can send to a topic with .to("out-topic").
Why not the others:
- filter → keeps/drops records, doesn’t transform.
- through → write/read via an intermediate topic, not a transform.
- reduce → stateful aggregation, not per-record stateless work.
#teamwork
Fear of conflict
🔸 FEAR OF CONFLICT: TURN TENSION INTO PROGRESS 💥🤝
🔸 WHAT IT IS
▪️ Teams avoid respectful debate, leading to silence, groupthink, and weak decisions.
🔸 WHY IT HURTS
▪️ Fewer perspectives → fewer creative solutions 🎯
▪️ Hidden issues linger and slow execution ⏳
🔸 WHAT “GOOD CONFLICT” LOOKS LIKE
▪️ Ideas clash, people don’t 🔧
▪️ Evidence over ego 🧠
▪️ Clear decisions and commitment ✅
🔸 HOW TO ENABLE IT
▪️ Facilitate decision techniques (decision matrix, time-boxed brainstorming) 🗂️
▪️ Model respectful challenge yourself—disagree without being disagreeable 🗣️
▪️ Invite opposing views; make it safe to speak up 🛡️
🔸 TL;DR
▪️ Don’t kill conflict—guide it. Productive debate → better decisions, creativity, and growth. 🚀
#Leadership #Teamwork #PsychologicalSafety #ConflictResolution #Collaboration #Agile #Management
#java
JMC for Micrometer & Prometheus in Spring Boot: Kafka Burger Orders 🍔📨
#scrum
🔸 PRODUCT BACKLOG REFINEMENT: A SCRUM TEAM RESPONSIBILITY 📋🤝
🔸 WHAT IT IS
▪️ Ongoing breakdown/clarification of PBIs into smaller, clearer items—not a time-boxed event.
▪️ Happens “as needed” during the Sprint to boost understanding and confidence.
🔸 COMMON ANTI-PATTERNS
▪️ PO monopolizes the meeting and ownership.
▪️ Shallow discussions; weak shared understanding.
▪️ Few voices dominate; poor documentation of decisions.
🔸 PRODUCT OWNER (PO) 🎯
▪️ Set vision, roadmap, personas, and storyboards.
▪️ Define acceptance/satisfaction criteria, validate assumptions with MVPs.
▪️ Engage customers/stakeholders; align goals and market insights.
▪️ Accountable for backlog content, availability, ordering—not sole refiner.
🔸 DEVELOPERS 🛠️
▪️ Co-refine PBIs; slice epics into functional units.
▪️ Estimate/plan, run experiments/MVPs, document options.
▪️ Collaborate on architecture and define product measures.
🔸 SCRUM MASTER 🧭
▪️ Facilitate refinement/estimation workshops.
▪️ Coach shared ownership and self-organization.
▪️ Promote transparency metrics (lead time, cycle time, time-to-market).
▪️ Help Developers slice PBIs for Sprint success.
🔸 CONCLUSION
▪️ PO: build the right thing.
▪️ Developers: build the thing right.
▪️ Scrum Master: enable empiricism & feedback across the flow.
#Scrum #ProductBacklog #Refinement #Agile #ProductOwner #Developers #ScrumMaster #Collaboration #ContinuousImprovement
#cloudNative
❓ What’s the best way to manage config in a cloud-native app?
Pick one:
- CMDB
- Git repo
- Environment variables
- Hardcode in code
✅ Correct Answer: 3. Environment variables
💡 Why? Matches the Twelve-Factor App. Change config without code changes. Keeps apps portable across environments.
❌ Why the others are wrong:
1. CMDB → Heavy, adds a central failure point; more for traditional setups.
2. Git → Good for tracking, but not ideal for runtime config/secrets.
4. Hardcode → Kills portability and is hard to manage.
#joke
😱😭🤕 Ouch : #developer on #friday versus the #team
Go further with Java certification:
Java👇
Spring👇