Service Discovery

What is a Microservices Architecture?

A microservices architecture structures an application as a collection of small, independently deployable services, each owning a specific business capability…

What is Service Discovery in Microservices?

Service discovery is the mechanism by which services in a distributed system automatically find the current network location of other services, since instances…

What is Docker Compose and When Do You Use It?

Docker Compose is a tool for defining and running multi-container applications from a single declarative YAML file, letting you start, stop, and network an ent…

How Does Service Discovery Work in Kubernetes?

Kubernetes service discovery works primarily through DNS: every Service gets a stable DNS name of the form `service-name.namespace.svc.cluster.local` resolved…

How Does DNS Resolution Work Inside Kubernetes?

Kubernetes gives every Service a stable, cluster-internal DNS name in the form service.namespace.svc.cluster.local, resolved by an in-cluster DNS server (CoreD…

What is CoreDNS and Why Does Kubernetes Use It?

CoreDNS is a flexible, plugin-based DNS server written in Go that Kubernetes runs as the default cluster DNS provider, translating Service and Pod names into I…

What is a Service Registry and Why Do Microservices Need One?

A service registry is a centralized, dynamically updated directory that records the network location (IP and port) of every currently running instance of every…

What is Consul and How is it Used in DevOps?

Consul is a distributed service networking tool from HashiCorp that provides service discovery, health checking, a distributed key-value store, and service mes…

What is ZooKeeper Used for in DevOps?

Apache ZooKeeper is a distributed coordination service that provides a highly consistent, hierarchical key-value namespace used by other distributed systems to…