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Apache Kafka - Certification 4

What you’ll learn​

  1. What is Apache Kafka?
    • What is a Kafka topic?
    • What is a Kafka message?
  2. How to create a new topic in Apache Kafka in CodeNOW?
  3. How to see the messages detail in Kafka topic in CodeNOW?
  4. How to view data from PostgresDB in CodeNOW?

Tasks​

  1. See the architecture of Ticket Reservation Demo App - Main Page and notice that:
    • There are different topics in 2 different Kafkas
    • Seat reservation API produces messages to the KafkaReservation Kafka instance
    • Seat reservation BL consumes messages from the KafkaReservation Kafka instance
    • Seat reservation BL produces messages to the KafkaNotification Kafka instance
    • Seat reservation BL uses the PostgreSQL database to store the reservations.
  2. Create an Environment named dev-<LastName>, for example: dev-Smith.
  3. Create a new Kafka topic named new-reservation-<lastName>, in the KafkaReservation instance.
    • For example: new-reservation-smith
    • It will be a topic for your own experiments with Kafka in CodeNOW.
  4. Create a new deployment configuration for the Ticket Reservation Application for the Environment created in Step 2.
    • Hint: Certification 1
    • Use Application Package version 1.0.1
    • Use the Environment created in Step 2. For example: dev-Smith.
    • Change the new-reservation topic name in the Component application.yaml files to your new Kafka topic
      • Use Seat reservation API and Seat reservation BL Components
      • Use topic created in step 3
    • Change the BACKEND_URL variable subdomain to your Environment.
      • For example: BACKEND_URL: "https://seat-reservation-api-spr-vqnnn-dev-komarek.stxplayground.codenow.com
    • See screenshot with the example below.
  5. Deploy Ticket Reservation Application
    • Connect the related Kafkas and DB.
    • See screenshot with the example below.
  6. Create at least one reservation
    • Use your Stratox email address.
    • Hint: Certification Level 1
    • You should receive a response Reservation created successfully.
  7. Find your reservation(s) in KafkaReservation
    • Create a screenshot of the related message(s) in topic created by you and highlight your email address in it.
  8. Find notification messages in KafkaNotification related to your reservation(s)
    • Topic: reservation-mail-notification
    • Create a screenshot of related message(s) and highlight your email address in it.
  9. Find your reservation in PostgresDB
    • Create a screenshot of related message(s) and highlight your email address in it.
    • See screenshot with the example below.

Deliverables​

  • Send the screenshots created in steps 7,8,9 to #academy-support_level1 Slack channel.

Example Screenshots​

Deployment Configuration​

Deployment Configuration

Connect Managed Services Configuration Screenshot​

Managed Services

View data from PostgresDB​

PostgresDB