# Observability & Monitoring (Laravel)

> Structured logging, log channels, Monolog, correlation IDs, Sentry/Bugsnag, metrics, tracing, health checks, queue monitoring, Horizon

- 20 perguntas de entrevista
- Senior
- [Perguntas de entrevista: Laravel](https://sharpskill.dev/pt/technologies/laravel/perguntas-entrevista.md)

## 1. O que é structured logging no Laravel?

**Resposta**

O structured logging consiste em registrar dados em um formato estruturado (JSON, arrays) em vez de texto puro. Isso facilita a busca, a filtragem e a análise dos logs com ferramentas como Elasticsearch ou Datadog. O Laravel usa o Monolog, que suporta nativamente o structured logging por meio de contextos e processors.

## 2. Qual é o papel principal dos log channels no Laravel?

**Resposta**

Os log channels permitem rotear os logs para diferentes destinos (arquivos, Slack, Sentry) conforme o contexto. Configurados em config/logging.php, permitem por exemplo enviar os erros críticos para o Slack enquanto mantêm os logs INFO em arquivos locais. Isso oferece máxima flexibilidade para a observabilidade multidestino.

## 3. Qual componente do Laravel usa o Monolog internamente?

**Resposta**

O Laravel usa o Monolog como motor de logging subjacente por meio da facade Log e do serviço LogManager. O Monolog é uma biblioteca PHP padrão que fornece handlers (arquivos, Slack, Sentry), formatters (JSON, linha) e processors (adição de contexto). O Laravel o encapsula para oferecer uma API simples e expressiva.

## Mais 17 perguntas disponiveis

- Qual nível de log usar para rastrear uma ação de usuário normal sem erro?
- Quando criar um custom log channel no Laravel?

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