Objective 3 Section Overview

In this lesson, we’ll explore how to register services in Consul and leverage service discovery for resilient, scalable applications. We’ll cover everything from defining service configurations to querying the service catalog and executing prepared queries.

The image outlines objectives for registering services and using service discovery, including interpreting service registration and configuration, checking service catalog status, and using prepared queries. It also indicates a difficulty level of 3.

Key Objectives

Objective	Description
Interpret service registration & configuration	Understand service definition files and metadata fields
Register a service with Consul	Use the CLI, HTTP API, or HCL configuration files to register services
Define health checks	Configure liveness and readiness probes to monitor service health
Query the service catalog	Retrieve service status and metadata via DNS, HTTP API, and the Consul UI
Explore prepared queries	Learn what prepared queries are, how they work, and why they’re essential for advanced discovery
Execute prepared queries	Use prepared queries to dynamically filter healthy service instances and balance load

Note

Prepared queries simplify advanced service discovery by filtering healthy nodes and managing service responses. For more details, see the Consul Service Discovery Docs.

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