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📰 Dev.to · Thellu

5 articles · Updated every 3 hours · View all reads

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Open Session in View Is Convenient — Until It Hides Your Lazy Loading Problem
Dev.to · Thellu 🔧 Backend Engineering ⚡ AI Lesson 2mo ago
Open Session in View Is Convenient — Until It Hides Your Lazy Loading Problem
Spring Boot makes many things easy. Sometimes too easy. One example is Open Session in View. If...
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Idempotency Keys in Spring Boot: Make POST Safe Against Retries
Dev.to · Thellu 🔧 Backend Engineering 3mo ago
Idempotency Keys in Spring Boot: Make POST Safe Against Retries
A user clicks “Pay”, the network drops, the client retries… and your backend creates two...
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# Stop Letting Jackson Accept Garbage: Strict JSON Parsing in Spring Boot
Dev.to · Thellu 🔧 Backend Engineering ⚡ AI Lesson 5mo ago
# Stop Letting Jackson Accept Garbage: Strict JSON Parsing in Spring Boot
Most Spring Boot APIs think they are strict — until a client sends something slightly “off”, and your...
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A Boring Error Format Is a Feature: Building a Consistent Error Envelope in Spring Boot
Dev.to · Thellu 🔧 Backend Engineering ⚡ AI Lesson 6mo ago
A Boring Error Format Is a Feature: Building a Consistent Error Envelope in Spring Boot
When APIs grow, error handling usually becomes… creative: sometimes a plain message...
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Understanding Transaction rolled back because it has been marked as rollback-only in Spring
Dev.to · Thellu 🔧 Backend Engineering ⚡ AI Lesson 1y ago
Understanding Transaction rolled back because it has been marked as rollback-only in Spring
Spring transactions are powerful but sometimes tricky. Here's a real-world debugging story about a...
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