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In this module, we’ll introduce HashiCorp Consul’s data center architecture and its essential components. You’ll learn how Consul enables service discovery, health checking, and key/value storage—and how it achieves high availability through its clustering model.
The image outlines objectives for explaining Consul architecture, focusing on components, high availability, core functionality, and agent roles, with a difficulty level indicator.

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What You’ll Learn

ObjectiveDescription
Consul ComponentsUnderstand client and server agents, datacenters, and communication protocols
High Availability & PerformancePrepare Consul clusters for fault tolerance and efficient data replication
Core FunctionalityExplore service discovery, health checks, key/value store, and service mesh design
Agent RolesCompare server vs. client behavior and learn best practices for each
Familiarity with service discovery concepts and basic networking will help you get the most out of this lesson.
Before diving into each topic, we’ll start with a high-level overview of Consul’s problem space and how its architecture addresses distributed system challenges. Subsequent sections will provide in-depth explanations, configuration examples, and best practices.

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References

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