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# backend

Desenvolvimento do lado do servidor, APIs, bancos de dados e logica de negocios.

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5 Kotlin Courses That Help You Build Portfolio-Worthy Projects

5 Kotlin Courses That Help You Build Portfolio-Worthy Projects

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5 min read
Why I Cache External API Data Instead of Calling It Every Time

Why I Cache External API Data Instead of Calling It Every Time

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2 min read
What is Nginx?

What is Nginx?

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11 min read
How to Change a Column Datatype Without Affecting Existing Users Postgresql

How to Change a Column Datatype Without Affecting Existing Users Postgresql

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3 min read
Medical Service API - v1.0

Medical Service API - v1.0

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5 min read
Abstract Repository Combining Two/Multiple Repositories (OrderDocumentRepo)

Abstract Repository Combining Two/Multiple Repositories (OrderDocumentRepo)

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1 min read
The Six Patterns That Cover Everything

The Six Patterns That Cover Everything

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5 min read
`allOf` vs `oneOf` vs `anyOf` in OpenAPI (with examples)

`allOf` vs `oneOf` vs `anyOf` in OpenAPI (with examples)

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2 min read
I realized I enjoy debugging real systems more than building features

I realized I enjoy debugging real systems more than building features

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1 min read
Graph RAG: Why Vector Search Alone Is Not Enough for Serious Backend Systems

Graph RAG: Why Vector Search Alone Is Not Enough for Serious Backend Systems

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2 min read
🚫My Spring Boot API Accepted Invalid Data…. Until I Learned Input Validation

🚫My Spring Boot API Accepted Invalid Data…. Until I Learned Input Validation

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2 min read
Serverless and Edge Are Eating the Backend in 2025

Serverless and Edge Are Eating the Backend in 2025

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4 min read
How I Built a Claude Router with Structured Concurrency and Virtual Threads

How I Built a Claude Router with Structured Concurrency and Virtual Threads

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6 min read
Why I built ElysianDB

Why I built ElysianDB

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3 min read
🔄I Thought PUT and PATCH Were the Same… I Was Wrong

🔄I Thought PUT and PATCH Were the Same… I Was Wrong

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2 min read
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