Developer Articles | TechForDev

Latest AI / ML JavaScript Python React Next.js Web Dev DevOps Cloud

JavaScript Find in Page: DOM Text Above the Codename One Canvas

Shai Almog1d ago • 4 min read

JavaScript Find in Page: DOM Text Above the Codename One Canvas

The Codename One JavaScript port now renders visible text into a targeted DOM layer, making it searc...

#java#mobile#android#ios

5 0

A Date Is Never Just a Date: From West Bengal's Panjika to a Bengali Calendar Library for Java 21

tapadyuti chatterjeeAug 24, 2026 • 14 min read

A Date Is Never Just a Date: From West Bengal's Panjika to a Bengali Calendar Library for Java 21

From West Bengal's panjika tradition to modern Java: a practical introduction to bengali-calendar, s...

#java#maven#localization#programming

2 0

Week 11 of #100DaysOfCode: Learning and Building Microservices with Spring Boot

Onatade Abdulmajeed1d ago • 5 min read

Week 11 of #100DaysOfCode: Learning and Building Microservices with Spring Boot

Introduction This week has been another challenging but rewarding part of my...

#100daysofcode#java#microservices#springboot

10 0

I Built a Small API Gateway With Real Production Problems — On Purpose

Praveen Yadav3d ago • 11 min read

I Built a Small API Gateway With Real Production Problems — On Purpose

A Spring Cloud Gateway demo with three-bucket Redis rate limiting, Resilience4j circuit breakers wit...

#java#springboot#microservices#observability

1 0

I Built My Own Fail-Fast HashMap — Here's Why a Boolean Flag Wasn't Enough

Gaurav Tyagi1d ago • 5 min read

I Built My Own Fail-Fast HashMap — Here's Why a Boolean Flag Wasn't Enough

If you've done LeetCode's Design HashMap, you've implemented put, get, and remove. What that exercis...

#java#datastructures#computerscience

0 0

Transaction propagation (REQUIRED / REQUIRES_NEW / NESTED ...) (Part 2 of 2)

Ankit Verma2d ago • 7 min read

Transaction propagation (REQUIRED / REQUIRES_NEW / NESTED ...) (Part 2 of 2)

Picking up between "join" and "start fresh" Part 1 left you with two propagation modes and...

#spring#java#backend#programming

0 0

What I gave up to run Spring static analysis in a browser

Braham5d ago • 9 min read

What I gave up to run Spring static analysis in a browser

There is a question that costs me half an hour every time I have to answer it: If I change this...

#java#spring#webassembly#programming

0 0

AI Agents Are Flooding Public Services - Build Your Spring Boot Defenses Before They Reach Your API

jamilxt6d ago • 9 min read

AI Agents Are Flooding Public Services - Build Your Spring Boot Defenses Before They Reach Your API

Imagine your service runs a public submission endpoint. A contact form, a claims intake API, a...

#java#springboot#ai#api

0 0

Spring AI Is About to Deprecate ChatMemory - Here Is How to Move to the New Session API

jamilxt5d ago • 8 min read

Spring AI Is About to Deprecate ChatMemory - Here Is How to Move to the New Session API

Three weeks ago I wrote about managing agent conversation memory in Spring AI with ChatMemory and...

#java#springboot#ai#springai

0 0

Spring AI vs LangChain4j in 2026 - The Choice Got Harder, Here Is How to Decide

jamilxt6d ago • 8 min read

Spring AI vs LangChain4j in 2026 - The Choice Got Harder, Here Is How to Decide

Six months ago the answer to "Spring AI or LangChain4j?" was almost automatic. Spring shop? Take...

#java#springboot#ai#langchain4j

0 0

No, the LLM Doesn't Get to Approve Your Refund

Antonio Lopes Correia3d ago • 6 min read

No, the LLM Doesn't Get to Approve Your Refund

ADR 001: Refund eligibility is deterministic code, not a model judgment Part 3 of an ongoing...

#java#ai#llm#testing

0 2

An Agent on a Leash, or why my AI agent doesn't make business decisions

Antonio Lopes Correia6d ago • 6 min read

An Agent on a Leash, or why my AI agent doesn't make business decisions

This post kicks off an ongoing experiment: building an LLM-powered support agent you can actually...

#java#ai#llm#agents

0 2

Drawing the Line: What Deserves an LLM and What Doesn't

Antonio Lopes Correia4d ago • 4 min read

Drawing the Line: What Deserves an LLM and What Doesn't

The three questions I use to decide what stays deterministic Part 2 of an ongoing experiment:...

#ai#architecture#llm#java

0 0

Migrating from Java to JavaScript/TypeScript? Here's how to map your stack

Sagar Kashyap4d ago • 3 min read

Migrating from Java to JavaScript/TypeScript? Here's how to map your stack

Moving services from Java (Spring Boot) to Node.js / TypeScript is a common transition when...

#java#javascript#typescript#node

6 0

Making HTTP Fail on Purpose: Building a Small Chaos Library for Java - Flaky HTTP

tapadyuti chatterjee3d ago • 11 min read

Making HTTP Fail on Purpose: Building a Small Chaos Library for Java - Flaky HTTP

What I learned while building Flaky HTTP, a Java 11 library for injecting latency and synthetic fail...

#java#testing#opensource#programming

1 0

Project Lilliput: por que os objetos Java estão ficando menores

Emerson Vieira4d ago • 3 min read

Project Lilliput: por que os objetos Java estão ficando menores

Se você programa em Java, provavelmente já escreveu algo assim milhares de vezes: var user = new....

#java#jvm#performance#opensource

0 0

Two-Layer Idempotency: Why Not Every Settlement System Needs an Outbox

Douglas Carmo5d ago • 5 min read

Two-Layer Idempotency: Why Not Every Settlement System Needs an Outbox

A few weeks ago I published a write-up on inverting the control flow of a settlement API: instead of...

#java#springboot#kafka#redis

2 0

Why You Should Avoid @Data on JPA Entities

BootSaaS5d ago • 3 min read

Why You Should Avoid @Data on JPA Entities

Lombok isn't necessarily the problem. Not understanding what it generates is. Under the hood, @Data...

#springboot#java#softwareengineering#coding

0 0

Arquitetura de Software pós-graduação: quando “aprender o framework” não é suficiente

benevanio santosAug 24, 2026 • 4 min read

Arquitetura de Software pós-graduação: quando “aprender o framework” não é suficiente

Recentemente concluí a disciplina Arquitetura de Software com Framework Java (2025), da minha...

#architecture#education#java#softwareengineering

1 0

Gregory Mitchell18h ago • 15 min read

Java on Cloudflare Workers

This post details bytebox, a dependency and runtime to get Java to run on Serverless Architecture vi...

#java#serverless#webassembly#gradle

1 0

I Used the Wrong @Id Import in Spring Boot and MongoDB. It Worked Anyway

Sanjay Kumar A3d ago • 4 min read

I Used the Wrong @Id Import in Spring Boot and MongoDB. It Worked Anyway

Last week I wrote a post about moving my Spring Boot project from MySQL to MongoDB. Somewhere in the...

#springboot#java#beginners#mongodb

1 0

AOP: aspect / pointcut / advice / weaving

Ankit Verma5d ago • 6 min read

AOP: aspect / pointcut / advice / weaving

Every codebase grows a set of chores that have nothing to do with the actual job of a method, yet...