Gabriel Anhaia - DEV Community

Gabriel Anhaia

Apr 29

When Your Embeddings Stop Distinguishing Anything

#rag #ai #observability #python

6 min read

Gabriel Anhaia

Apr 29

Your Go 'Service' Layer Is Just a Transaction Script. That's Not a Bug

#go #architecture #backend #programming

1

7 min read

Gabriel Anhaia

Apr 29

An Eval Harness for Tool-Use Agents: 90 Lines, 3 Judges, $3 Per Run

#ai #agents #python #testing

1

7 min read

Gabriel Anhaia

Apr 29

We Killed `interface{}` From a Go Codebase. Here's What Replaced It

#go #generics #refactoring #backend

7 min read

Gabriel Anhaia

Apr 29

How LLMs Memorize Phone Numbers (and How Labs Stop It)

#ai #llm #security #privacy

7 min read

Gabriel Anhaia

Apr 29

Hexagonal for the Rest of Us: Ports and Adapters Without DDD

#go #architecture #hexagonal #backend

8 min read

Gabriel Anhaia

Apr 29

When the Reranker Hurts: Recall@5 Cases Where Two-Stage Retrieval Loses to One

#ai #rag #llm #benchmark

7 min read

Gabriel Anhaia

Apr 29

Strangler Fig in Go: Migrating a Monolith Without a Big-Bang Rewrite

#go #architecture #programming #tutorial

8 min read

Gabriel Anhaia

Apr 29

Why Strict JSON Mode Doesn't Stop Hallucinated Tool Calls

#ai #llm #agents #python

7 min read

Gabriel Anhaia

Apr 29

Every LLM Eval Library Has the Same Bug: Stochastic Judges Used as Deterministic Oracles

#ai #testing #llm #observability

7 min read

Gabriel Anhaia

Apr 29

Aggregate Boundaries in Go: 1 Rule That Beats 90% of DDD Books

#go #ddd #architecture #backend

1

7 min read

Gabriel Anhaia

Apr 29

Aggregate Boundaries in Go: One Rule That Beats 90% of DDD Books

#go #ddd #architecture #backend

7 min read

Gabriel Anhaia

Apr 29

Anthropic Prompt Caching Saves 90% — Here's the One Caveat Nobody Mentions

#anthropic #llm #python #performance

7 min read

Gabriel Anhaia

Apr 29

Why Your Team Should Stop Reaching for errgroup by Default

#go #concurrency #backend #goroutines

8 min read

Gabriel Anhaia

Apr 29

The Agent That Spent $47K on Itself: An Autonomous-Loop Postmortem

#ai #agents #observability #python

7 min read

Gabriel Anhaia

Apr 29

Go Channels Aren't Free. Here's the Real Cost

#go #performance #concurrency #benchmark

8 min read

Gabriel Anhaia

Apr 29

The 5 Failure Modes of Multi-Agent Systems Nobody Warns You About

#ai #agents #python #observability

7 min read

Gabriel Anhaia

Apr 29

Defer Has 3 Performance Cliffs. Here's How to See Them

#go #performance #runtime #optimization

7 min read

Gabriel Anhaia

Apr 29

Cosine Similarity Lies. Here's What to Use When Your Embeddings All Cluster at 0.85

#ai #rag #embeddings #llm

7 min read

Gabriel Anhaia

Apr 29

RAG Without Embeddings: When BM25 Beats Your $0.20-per-1K Vector Index

#rag #postgres #ai #search

7 min read

Gabriel Anhaia

Apr 29

The Strange Case of Go's nil Interface Comparison

#go #debugging #interfaces #backend

7 min read

Gabriel Anhaia

Apr 29

When 'Take a Deep Breath' Stopped Working: Prompt Tricks With an Expiry Date

#ai #llm #promptengineering #machinelearning

7 min read

Gabriel Anhaia

Apr 29

Go Generics in 2026: What Finally Works and What Still Doesn't

#go #programming #generics #backend

7 min read

Gabriel Anhaia

Apr 29

The Hidden Tax of Structured Output: How Much Extra You Pay for JSON Mode

#llm #openai #anthropic #python

7 min read

Gabriel Anhaia

Apr 29

sync.Pool: The Optimization You Reach for Last, Not First

#go #performance #optimization

1

7 min read

Gabriel Anhaia

Apr 29

Tokenizer Quirks: Claude, GPT, and Gemini Don't Count the Same Text the Same Way

#ai #llm #python #tokenization

6 min read

Gabriel Anhaia

Apr 29

Lost-in-the-Middle Is Still Real in 2026 (Even on 1M-Token Models)

#ai #llm #rag #python

2

6 min read

Gabriel Anhaia

Apr 29

context.Context Is a Tree, Not a Bag. Treat It Like One

#go #programming #backend #bestpractices

6 min read

Gabriel Anhaia

Apr 28

Value Objects in Go: 4 Patterns That Kill Invalid State

#go #architecture #programming #tutorial

1

8 min read

Gabriel Anhaia

Apr 28

Migrating a Large Go Service to Hexagonal Without a Rewrite

#go #architecture #programming #tutorial

2

11 min read

Gabriel Anhaia

Apr 28

Domain Events in Go Without an Event Bus

#go #architecture #programming #tutorial

3

7 min read

Gabriel Anhaia

Apr 28

Your Go Middleware Is Doing Too Much. Move It to an Adapter

#go #architecture #webdev #programming

1

8 min read

Gabriel Anhaia

Apr 28

main() Is the Most Important Function in Your Go Service

#go #architecture #programming #bestpractices

1

8 min read

Gabriel Anhaia

Apr 28

I Replaced 2,000 Lines of Go Mocks With 200 Lines of Fakes

#go #testing #architecture #programming

1

7 min read

Gabriel Anhaia

Apr 28

Your gRPC Protobuf Types Don't Belong in Your Domain Layer

#go #grpc #architecture #programming

1

6 min read

Gabriel Anhaia

Apr 28

Go's Implicit Interfaces Are Its Best Architecture Feature

#go #architecture #programming #beginners

1

8 min read

Gabriel Anhaia

Apr 28

The Anti-Corruption Layer That Saves Your Next Vendor Migration

#go #architecture #programming #bestpractices

1

8 min read

Gabriel Anhaia

Apr 28

Your Go Config Package Is a Hidden Dependency Monster

#go #architecture #programming #bestpractices

1

7 min read

Gabriel Anhaia

Apr 28

The Coupling Problem Hiding in Every Go Microservice Codebase

#go #architecture #microservices #programming

1

8 min read

Gabriel Anhaia

Apr 28

Stop Importing database/sql in Your Go Business Logic

#go #architecture #programming #bestpractices

2

7 min read

Gabriel Anhaia

Apr 28

Your Go Tests Take 6 Minutes Because Your Architecture Is Wrong

#go #testing #architecture #programming

1

7 min read

Gabriel Anhaia

Apr 28

The Repository Pattern Everyone Gets Wrong in Go

#go #architecture #programming #bestpractices

8 min read

Gabriel Anhaia

Apr 28

Your Go HTTP Handler Is 400 Lines. That's the Whole Problem

#go #architecture #webdev #programming

9 min read

Gabriel Anhaia

Apr 28

DDD in Go Without the Bureaucracy: Aggregates, Not Abstractions

#go #architecture #ddd #backend

10 min read

Gabriel Anhaia

Apr 28

Your GORM Model Is Not Your Domain (And It's Eating Your Business Logic)

#go #architecture #database #gorm

1

10 min read

Gabriel Anhaia

Apr 28

golang-standards/project-layout Is Not a Standard. Russ Cox Said So

#go #architecture #techhistory #programming

10 min read

Gabriel Anhaia

Apr 28

Your Go 'Clean Architecture' Is Just Java in Disguise

#go #architecture #hottake #webdev

10 min read

Gabriel Anhaia

Apr 28

Your First Month in Go as a PHP Developer: The Honest Diary

#go #php #laravel #career

10 min read

Gabriel Anhaia

Apr 28

PHPUnit Mocking Made You Lazy. Go Will Force You to Design

#go #php #testing #architecture

10 min read

Gabriel Anhaia

Apr 28

Stop Looking for Laravel's Service Container in Go

#go #php #architecture #webdev

10 min read

Gabriel Anhaia

Apr 28

Exceptions Made You Sloppy. Go's if err != nil Fixes That

#go #php #programming #softwareengineering

10 min read

Gabriel Anhaia

Apr 28

First Week in Go: 9 Habits Every PHP Developer Has to Unlearn

#php #go #beginners #webdev

10 min read

Gabriel Anhaia

Apr 28

Everyone Logs Wrong with slog. 7 Patterns for 3 AM

#go #observability #backend

10 min read

Gabriel Anhaia

Apr 28

Go's range-over-func: 4 Footguns the Compiler Won't Warn You About

#go #programming #backend #tutorial

10 min read

Gabriel Anhaia

Apr 28

50,000 Goroutines Took Down Prod at 3 AM. The Fix Is One Line

#go #debugging #performance #webdev

1

10 min read

Gabriel Anhaia

Apr 28

A Malicious Go Module Sat in the Mirror for 3 Years. Your go.sum Won't Save You

#go #security #architecture #backend

10 min read

Gabriel Anhaia

Apr 28

Go 1.25 Green Tea GC: Why the 40% Number Is Real for Some Workloads

#go #performance #backend #runtime

1

10 min read

Gabriel Anhaia

Apr 28

GOMAXPROCS Is Lying to Your Kubernetes Pod (Costing You CPU)

#go #kubernetes #performance #backend

10 min read

Gabriel Anhaia

Apr 27

Tool-Calling Prompts That Don't Blow Up on the Five Edge Cases

#ai #agents #prompt #python

1

8 min read

Gabriel Anhaia

Apr 27

Migrating From a JSON Column to a Proper Schema in Postgres

#postgres #database #tutorial #devops

1

6 min read

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