---
title: Advanced
description: This section covers advanced features of the Go client for Elasticsearch. Interceptors — Middleware for modifying requests and responses (dynamic auth,...
url: https://www.elastic.co/elastic/docs-builder/docs/3016/reference/elasticsearch/clients/go/advanced
products:
  - Elasticsearch Client
  - Elasticsearch Go Client
---

# Advanced
This section covers advanced features of the Go client for Elasticsearch.
- [Interceptors](https://www.elastic.co/elastic/docs-builder/docs/3016/reference/elasticsearch/clients/go/advanced/interceptors) — Middleware for modifying requests and responses (dynamic auth, custom observability)
- [Observability](https://www.elastic.co/elastic/docs-builder/docs/3016/reference/elasticsearch/clients/go/advanced/observability) — OpenTelemetry instrumentation, transport metrics, and debug logging