Blog of Vincent VAUBAN

🛰️📡 HTTP STATUS CODES — THE MAP OF YOUR API RESPONSES

3. listopad 2025 · rest,programmmer,techlead

🔸 TLDR ▪️ HTTP codes are grouped by first digit: 1xx info, 2xx success, 3xx redirection, 4xx...

🚀🩺 KUBERNETES STARTUP PROBE: BOOT SAFELY, AVOID CRASHLOOPS

3. listopad 2025 · devops,kubernetes

🔸 TL;DR ▪️ Use startupProbe for apps with slow or spiky boot times. ▪️ It delays liveness...

🚀 New Book Release — Spring Certification (Theory-First Guide) + Launch Coupon

3. listopad 2025 · java,springboot,spring,book

Hi folks, I’m excited to announce my new book: Spring Certification — Theory-First Study Guide....

💡🧩 Know your Java classes about Exceptions

3. listopad 2025 · java,crosswords

It’s Friday crosswords time! A tiny puzzle to help you better remember core Java exceptions APIs ...

🚀🧠 INTERVIEW PREP: TURN YOUR CV INTO REAL STORIES

3. listopad 2025 · interview

🔸 TLDR - Don’t list projects. Tell stories. - For EACH project / product / component on...

🚀☕ JAVA COMMUNITY: STILL THRIVING, STILL GROWING

3. listopad 2025 · java,programmmer,techlead

Java is not “legacy.” Java is alive, massive, and getting stronger every single year. Just look...

🚀🐳 FROM SPRING BOOT JAR TO PRODUCTION-READY IMAGE WITH PAKETO BUILDPACKS (SBOM + SIGNING)

3. listopad 2025 · spring,springboot,java,devops

🔸 TLDR You can go from mvn package to a secure, signed, production-grade container image...

🍃🎓 SPRING CERTIFICATION — TEST YOURSELF (3 QUESTIONS IN THE CAROUSEL) 🚀 #episod5

3. listopad 2025 · springboot,spring,java,vcp,certification

🍃🎓 SPRING CERTIFICATION — TEST YOURSELF (3 QUESTIONS IN THE CAROUSEL) 🚀 🔸 WHY SPRING...

💰🔢 AVOID FLOAT & DOUBLE WHEN YOU NEED EXACT ANSWERS

2. listopad 2025 · java,programmmer

🔸 TLDR - When you deal with money 💶, counters 🔄, IDs 🔖, or anything that must be 100% accurate...

⚙️➡️ CLEANER JAVA WITH STREAMS: STOP WRITING LOOPS FOR EVERYTHING

2. listopad 2025 · java,programmmer

🔸 TLDR Using Java Streams (filter, map, collect, etc.) makes your code shorter, more readable,...

📡🔀 ALTERNATIVES TO REST: RPC, GRAPHQL & EVENT-DRIVEN APIS

2. listopad 2025 · rest,programmmer,architecture,techlead

TL;DR 🧠 REST is not always the best fit. ▪️ Need low-latency calls between services? → RPC ...

☕🎓 JAVA 21 OCP — TEST YOURSELF (3 QUESTIONS IN THE CAROUSEL) 🚀 episod5

2. listopad 2025 · java21,java,ocp,certification,slides

☕🎓 JAVA 21 OCP — TEST YOURSELF (3 QUESTIONS IN THE CAROUSEL) 🚀 🔸 WHY JAVA CERTIFICATION IS A...

First on tech! See a new tech wave? Ride it early.

2. listopad 2025 · quote

🌊🚀 RIDE THE WAVE EARLY. In tech, timing matters as much as skill. The people who lean in early...

[POLL] What garbage collector do you use in prod? G1/ ZGC/ Shenandoah/ Parallel

2. listopad 2025 · java,poll

I’m curious what you actually run in production—vote in the poll and tell us why in the comments ...

🧱🛠 MINIMAL CONSTRUCTOR & FACTORY METHODS: WRITE OBJECTS THAT MAKE SENSE

2. listopad 2025 · java,programmmer

TLDR 💡 Keep your constructor minimal: only assign the required fields. For anything non...

[POLL] What’s the main reason you contribute to Open Source? REP/ LEARN/ IMPACT/ DEPENDS

29. říjen 2025 · poll,open source

Here we are—mid-Hacktoberfest 2025! 🎃🍂 Whether you’re shipping your first PR or mentoring...

JAVA GARBAGE COLLECTORS — THE OPTIONS, IN PLAIN ENGLISH

26. říjen 2025 · java,techlead,programmmer,devops,slides

TL;DR: Different apps need different GCs. Start with G1, go ZGC/Shenandoah for ultra-low pauses,...

💡🧩 Know your Java classes about Handling Date, Time Values

26. říjen 2025 · java,crosswords

It’s Friday crosswords time! A tiny puzzle to help you better remember core Java time APIs — and...

🧩📦 DATA CLUMPS: SPOT IT, FIX IT

26. říjen 2025 · code-smell,cleancode

🔸 TL;DR ▪️ Data Clumps = the same group of fields (e.g., street, city, zip, or startDate,...

✨☕ JAVA GENERICS — PRACTICAL RULES YOU’LL ACTUALLY USE

25. říjen 2025 · java,programmmer

Your learning drop for cleaner APIs and safer code. Below are 7 field-tested habits (with tiny...

All Categories - Blog of Vincent VAUBAN

🛰️📡 HTTP STATUS CODES — THE MAP OF YOUR API RESPONSES

🚀🩺 KUBERNETES STARTUP PROBE: BOOT SAFELY, AVOID CRASHLOOPS

🚀 New Book Release — Spring Certification (Theory-First Guide) + Launch Coupon

💡🧩 Know your Java classes about Exceptions

🚀🧠 INTERVIEW PREP: TURN YOUR CV INTO REAL STORIES

🚀☕ JAVA COMMUNITY: STILL THRIVING, STILL GROWING

🚀🐳 FROM SPRING BOOT JAR TO PRODUCTION-READY IMAGE WITH PAKETO BUILDPACKS (SBOM + SIGNING)

🍃🎓 SPRING CERTIFICATION — TEST YOURSELF (3 QUESTIONS IN THE CAROUSEL) 🚀 #episod5

💰🔢 AVOID FLOAT & DOUBLE WHEN YOU NEED EXACT ANSWERS

⚙️➡️ CLEANER JAVA WITH STREAMS: STOP WRITING LOOPS FOR EVERYTHING

📡🔀 ALTERNATIVES TO REST: RPC, GRAPHQL & EVENT-DRIVEN APIS

☕🎓 JAVA 21 OCP — TEST YOURSELF (3 QUESTIONS IN THE CAROUSEL) 🚀 episod5

First on tech! See a new tech wave? Ride it early.

[POLL] What garbage collector do you use in prod? G1/ ZGC/ Shenandoah/ Parallel

🧱🛠 MINIMAL CONSTRUCTOR & FACTORY METHODS: WRITE OBJECTS THAT MAKE SENSE

[POLL] What’s the main reason you contribute to Open Source? REP/ LEARN/ IMPACT/ DEPENDS

JAVA GARBAGE COLLECTORS — THE OPTIONS, IN PLAIN ENGLISH

💡🧩 Know your Java classes about Handling Date, Time Values

🧩📦 DATA CLUMPS: SPOT IT, FIX IT

✨☕ JAVA GENERICS — PRACTICAL RULES YOU’LL ACTUALLY USE

☕🍃🔍

🛰️📡 HTTP STATUS CODES — THE MAP OF YOUR API RESPONSES

🚀🩺 KUBERNETES STARTUP PROBE: BOOT SAFELY, AVOID CRASHLOOPS

🚀 New Book Release — Spring Certification (Theory-First Guide) + Launch Coupon