Gabriel Anhaia - DEV Community

Gabriel Anhaia

Jun 13

Your Startup's First Observability Stack: Logs, Metrics, Traces on a Budget

#observability #startup #devops #opentelemetry

6 min read

Gabriel Anhaia

Jun 13

Redacting PII in LLM Traces Without Losing Debuggability

#observability #llm #security #privacy

6 min read

Gabriel Anhaia

Jun 13

Design a News Feed: Fan-Out, Ranking, and the Celebrity Problem

#systemdesign #interview #scalability #architecture

8 min read

Gabriel Anhaia

Jun 13

Design a Distributed Lock Service: Fencing Tokens and the Failure Modes

#systemdesign #interview #distributedsystems #backend

9 min read

Gabriel Anhaia

Jun 13

Postgres Partitioning in 2026: When the Complexity Pays Off

#postgres #database #performance #backend

7 min read

Gabriel Anhaia

Jun 13

Covering Indexes and Index-Only Scans: The Read Win You Are Missing

#postgres #database #performance #backend

6 min read

Gabriel Anhaia

Jun 13

Connection Pool Sizing in 2026: The Formula and the Footguns

#postgres #database #performance #backend

7 min read

Gabriel Anhaia

Jun 13

Event Ordering and Partition Keys: The Guarantee You Think You Have

#kafka #architecture #eventdriven #backend

6 min read

Gabriel Anhaia

Jun 13

Dead-Letter Replay: Doing It Without Double-Processing

#kafka #architecture #eventdriven #backend

7 min read

Gabriel Anhaia

Jun 13

The Idempotent Consumer: Dedup Stores That Actually Scale

#kafka #architecture #eventdriven #backend

7 min read

Gabriel Anhaia

Jun 13

Temperature vs top-p: Which Knob to Turn and When

#llm #ai #prompt #tutorial

6 min read

Gabriel Anhaia

Jun 13

Delimiters as Defense: Structuring Prompts Against Injection

#ai #llm #security #prompt

5 min read

Gabriel Anhaia

Jun 13

Few-Shot or Fine-Tune in 2026: The Decision Most Teams Get Backwards

#ai #llm #promptengineering #machinelearning

6 min read

Gabriel Anhaia

Jun 13

Online vs Offline Evals: Where Each One Catches the Bug

#llm #observability #evals #ai

6 min read

Gabriel Anhaia

Jun 13

An LLM Error Taxonomy: Classifying Failures in Your Traces

#llm #observability #devops #tutorial

6 min read

Gabriel Anhaia

Jun 13

TTFT vs Total Latency: Instrumenting What Users Actually Feel

#llm #observability #devops #tutorial

6 min read

Gabriel Anhaia

Jun 13

Context Compression Before the LLM: Cutting Tokens Without Cutting Recall

#rag #ai #llm #python

6 min read

Gabriel Anhaia

Jun 13

BM25 + Dense Fusion: When Keyword Search Saves Your RAG

#rag #ai #llm #search

7 min read

Gabriel Anhaia

Jun 13

Query Rewriting Before Retrieval: The Cheap Recall Win Most Skip

#rag #ai #llm #howto

7 min read

Gabriel Anhaia

Jun 13

Human-in-the-Loop Approval Gates: Where to Pause an Autonomous Agent

#ai #agents #python #reliability

6 min read

Gabriel Anhaia

Jun 13

Context-Window Eviction: What to Drop When the Agent Fills Up

#ai #agents #python #llm

6 min read

Gabriel Anhaia

Jun 13

ReAct vs Plan-and-Execute: Picking an Agent Loop in 2026

#ai #agents #llm #architecture

6 min read

Gabriel Anhaia

Jun 13

Idempotent Tool Calls: The Retry Safety Net Agents Forget

#ai #agents #reliability #backend

7 min read

Gabriel Anhaia

Jun 13

PHP Arrays to TypeScript: When It Is a Record, a Tuple, or a Real Type

#typescript #php #programming #webdev

6 min read

Gabriel Anhaia

Jun 13

Java Generics to TypeScript: extends, super, and the in/out Keywords

#typescript #java #programming #webdev

7 min read

Gabriel Anhaia

Jun 13

Module Resolution in 2026: bundler, node16, and Why Your Imports Break

#typescript #javascript #node #webdev

7 min read

Gabriel Anhaia

Jun 13

const Type Parameters: Preserving Literal Inference in Generic Functions

#typescript #programming #webdev #javascript

6 min read

Gabriel Anhaia

Jun 13

Runtime Validation in TypeScript: Where Zod Ends and the Type System Begins

#typescript #zod #webdev #programming

6 min read

Gabriel Anhaia

Jun 13

Pick, Omit, Record: The Utility Types You Should Reach For First

#typescript #programming #webdev #javascript

6 min read

Gabriel Anhaia

Jun 13

Value Objects in Go: Making Invalid Domain State Unrepresentable

#go #architecture #ddd #backend

6 min read

Gabriel Anhaia

Jun 13

Thin Application Services in Go: Orchestration Without Business Logic

#go #architecture #hexagonal #ddd

6 min read

Gabriel Anhaia

Jun 13

select With Timeouts: 3 Channel Patterns That Prevent Goroutine Leaks

#go #concurrency #goroutines #backend

8 min read

Gabriel Anhaia

Jun 13

Struct Embedding in Go: Composition That Bites When You Reach for Inheritance

#go #programming #backend #bestpractices

6 min read

Gabriel Anhaia

Jun 13

%w and the Error Chain: Wrapping Without Losing the Cause in Go

#go #errors #backend #programming

6 min read

Gabriel Anhaia

Jun 13

defer in Loops: The Resource Leak Go Still Lets You Write

#go #programming #backend #bestpractices

6 min read

Gabriel Anhaia

Jun 13

Query Objects in PHP: Rich Filtering Without Leaking SQL Into the Domain

#php #architecture #ddd #backend

7 min read

Gabriel Anhaia

Jun 13

A Domain Logger Port: Decoupling From PSR-3 Without Losing Context

#php #architecture #hexagonal #logging

7 min read

Gabriel Anhaia

Jun 13

Retries and Circuit Breakers Belong in the Adapter, Not Your Use Case

#php #architecture #hexagonal #resilience

6 min read

Gabriel Anhaia

Jun 13

Persisting One Aggregate Across Multiple Tables, ORM-Agnostic

#php #ddd #architecture #backend

7 min read

Gabriel Anhaia

Jun 13

Feature Flags Without Coupling: A Flag Port for the PHP Domain

#php #architecture #hexagonal #testing

6 min read

Gabriel Anhaia

Jun 13

Modeling Money in PHP: Your Own Value Object vs brick/money Behind a Port

#php #ddd #architecture #money

1

7 min read

Gabriel Anhaia

Jun 13

Hand-Rolled Mappers vs AutoMapper: Keeping the PHP Domain Pure at the Boundary

#php #architecture #ddd #doctrine

6 min read

Gabriel Anhaia

Jun 13

Read Models Without a Second Database: CQRS-Lite Projections in PHP

#php #architecture #postgres #backend

7 min read

Gabriel Anhaia

Jun 13

A Domain Exception Hierarchy in PHP That Maps Cleanly to HTTP

#php #architecture #ddd #backend

6 min read

Gabriel Anhaia

Jun 13

Contract Tests in PHP: Proving Every Adapter Honors Its Port

#php #testing #architecture #hexagonal

6 min read

Gabriel Anhaia

Jun 13

Input and Output DTOs: Drawing the Application Boundary in PHP

#php #architecture #ddd #backend

7 min read

Gabriel Anhaia

Jun 13

Cache as a Decorator: Wrap the Repository, Not the Domain

#php #architecture #caching #hexagonal

7 min read

Gabriel Anhaia

Jun 13

Translate Infrastructure Errors at the Adapter, Not in Your Domain

#php #architecture #hexagonal #backend

6 min read

Gabriel Anhaia

Jun 13

The Composition Root: Where PHP Dependency Wiring Actually Belongs

#php #architecture #hexagonal #backend

6 min read

Gabriel Anhaia

Jun 13

Time Is a Dependency: Injecting a Clock Into Your PHP Domain

#php #ddd #architecture #testing

6 min read

Gabriel Anhaia

Jun 13

When Not to Reach for Microservices: A Startup's First 18 Months

#startup #architecture #microservices #webdev

1

6 min read

Gabriel Anhaia

Jun 13

Ship It With a Boring Stack: The 2026 Startup Default That Actually Works

#startup #webdev #architecture #career

6 min read

Gabriel Anhaia

Jun 13

Trace Sampling for LLM Apps: Keep the Spans That Matter, Drop the Rest

#ai #observability #llm #devops

6 min read

Gabriel Anhaia

Jun 13

The Cost-Quality-Latency Triangle: Instrumenting the LLM Trade-Off

#ai #observability #llm #devops

6 min read

Gabriel Anhaia

Jun 13

Design a Notification Fan-Out Service: Push, Email, SMS at Scale

#systemdesign #interview #distributedsystems #scalability

8 min read

Gabriel Anhaia

Jun 13

Design a Rate Limiter: 4 Algorithms, 4 Trade-Offs

#systemdesign #redis #backend #architecture

8 min read

Gabriel Anhaia

Jun 13

Design a URL Shortener: The Constraints Interviewers Actually Probe

#systemdesign #interview #scalability #backend

9 min read

Gabriel Anhaia

Jun 13

UUIDv7 vs BIGINT Primary Keys: The 2026 Verdict

#postgres #database #performance #backend

7 min read

Gabriel Anhaia

Jun 13

Soft Delete vs Archive Table: The Choice That Haunts Your Queries

#postgres #database #sql #backend

6 min read

Gabriel Anhaia

Jun 13

Picking a Data Store in 2026: 5 Questions Before You Reach for Postgres

#database #postgres #architecture #backend

7 min read