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

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Rate Limiting Algorithms Explained: When to Use Which (With TypeScript Examples)

Rate Limiting Algorithms Explained: When to Use Which (With TypeScript Examples)

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6 min read
Stop Passing Full Chat Transcripts: Build a Two-Tier AI Memory System

Stop Passing Full Chat Transcripts: Build a Two-Tier AI Memory System

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2 min read
10 Years In, Everything I Was Proud Of As a Junior Was Wrong

10 Years In, Everything I Was Proud Of As a Junior Was Wrong

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4 min read
The Screen Is Correct. Can the Purchase Still Happen Twice?

The Screen Is Correct. Can the Purchase Still Happen Twice?

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12 min read
Redis Caching in NestJS: I Cut Database Calls by 60% in Production

Redis Caching in NestJS: I Cut Database Calls by 60% in Production

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5 min read
What Actually Happens When Linux Runs Out of Memory: Inside the OOM Killer

What Actually Happens When Linux Runs Out of Memory: Inside the OOM Killer

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4 min read
Go Concurrency: How to Run Parallel Tasks with Goroutines, Channels, and Context

Go Concurrency: How to Run Parallel Tasks with Goroutines, Channels, and Context

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8 min read
Why your webhooks arrive duplicated and how to stop them costing an invoice

Why your webhooks arrive duplicated and how to stop them costing an invoice

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6 min read
Multi-Region & Geo-Distribution

Multi-Region & Geo-Distribution

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2 min read
Your Payment Timed Out. Was the Customer Charged?

Your Payment Timed Out. Was the Customer Charged?

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6 min read
Don't pick a partial index for speed: what I measured on a 10M-row Postgres queue table

Don't pick a partial index for speed: what I measured on a 10M-row Postgres queue table

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9 min read
Idempotency is not a key, it's a contract

Idempotency is not a key, it's a contract

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10 min read
Parte 2: Resolvendo o Desafio Técnico de Backend do PicPay

Parte 2: Resolvendo o Desafio Técnico de Backend do PicPay

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3 min read
I Finally Understood Why Database Indexes Make Queries Faster

I Finally Understood Why Database Indexes Make Queries Faster

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2 min read
Why a 99% Cache Hit Rate Is 10x Faster Than 90% (Not 9%)

Why a 99% Cache Hit Rate Is 10x Faster Than 90% (Not 9%)

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4 min read
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