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Guide: Amazon ECS Service Discovery

Amazon ECS Service Discovery is an important concept for the AWS Solution Architect.

What is ECS Service Discovery?
ECS Service Discovery is a feature of Amazon ECS (Elastic Container Service) that enables integrated service discovery across your microservices applications. With this, ECS allows your service to locate and talk to each other, leading to simplified service to service communication.

Why is it important?
Understanding ECS Service Discovery is crucial for designing and operating robust, scalable and efficient applications on AWS. It helps in maintaining system robustness and reducing communication failovers, thereby enhancing the system's overall reliability.

How does it work?
When a task starts up, it can advertise its presence and can discover the IPs of other tasks in the same network and known by the same service name. The discovery happens through AWS Cloud Map service that creates and manages custom names for your application resources.

Exam Tips: Answering Questions on ECS Service Discovery

  • Remember that ECS Service Discovery uses AWS CloudMap for service discovery within microservices.
  • Understand that you can set up ECS Service Discovery in the ECS Console, AWS CLI or using AWS SDKs.
  • AWS Resource Record types, A or SRV, determine how the service is discovered. Understand the differences.
  • Be clear about the roles and permissions required for ECS Service Discovery to work properly.

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ECS Service Discovery practice test

Amazon ECS Service Discovery provides a mechanism for ECS services to locate and communicate with each other using DNS names. Instead of using hard-coded IP addresses, which can change as tasks scale, you can use service discovery to map a friendly DNS name to a service's tasks. AWS Cloud Map creates and manages custom namespaces with Amazon Route 53, handling task registration and deregistration as tasks scale. This process simplifies the communication between microservices, making your architecture more resilient to disruptions and changes.

Time: 5 minutes   Questions: 5

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AWS Certified Solutions Architect - Associate Preparation Package (2024)

  • 3215 Superior-grade AWS Certified Solutions Architect - Associate practice questions.
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