What is the use of service discovery?
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What is the use of service discovery?
Service discovery bridges the gap between a service’s name and access information (IP address) by providing a dynamic mapping between a service name and its IP address. Users of all services (users using browsers or apps or other services) use well-known DNS mechanisms to obtain service IP addresses.
Do you need service discovery in Kubernetes?
Kubernetes Services: Service Discovery and Load Balancing Applications need to be exposed so that external users can call them. Pods are located in a different network segment from machines. To expose the pod network for external access, you need to configure service discovery.
What is service discovery and how it works?
What is service discovery? Service discovery is how applications and (micro)services locate each other on a network. Implementations include both a central server(s) that maintain a global view of addresses and clients that connect to the central server to update and retrieve addresses.
What is Container service discovery?
Service discovery is a technique for getting traffic from one container to another using the containers direct IP address, instead of an intermediary like a load balancer.
Is ZooKeeper a service discovery?
Nevertheless, ZooKeeper is one of the most popular service discovery mechanisms used in the microservices world.
Why service discovery is required in microservices?
In a microservices application, the set of running service instances changes dynamically. Instances have dynamically assigned network locations. Consequently, in order for a client to make a request to a service it must use a service‑discovery mechanism. A key part of service discovery is the service registry.
Is Kubernetes service a load balancer?
In other words, Kubernetes services are themselves the crudest form of load balancing traffic. In Kubernetes the most basic type of load balancing is load distribution. Kubernetes uses two methods of load distribution. Both of them are easy to implement at the dispatch level and operate through the kube-proxy feature.
What is service discovery pattern?
The query API is used by system components to discover available service instances. There are two main service‑discovery patterns: client-side discovery and service-side discovery. In systems that use client‑side service discovery, clients query the service registry, select an available instance, and make a request.
What is service discovery endpoint?
Service Discovery is a way of letting services discover and connect with each other. Typically, services can only talk to each other if they expose a public endpoint – and even then, requests will have to go over the internet.