Question 16

The application reliability team at your company has added a debug feature to their backend service to send all server events to Google Cloud Storage for eventual analysis. The event records are at least 50 KB and at most 15 MB and are expected to peak at 3,000 events per second. You want to minimize data loss.
Which process should you implement?
  • Question 17

    Your company's test suite is a custom C++ application that runs tests throughout each day on Linux virtual machines. The full test suite takes several hours to complete, running on a limited number of on premises servers reserved for testing. Your company wants to move the testing infrastructure to the cloud, to reduce the amount of time it takes to fully test a change to the system, while changing the tests as little as possible. Which cloud infrastructure should you recommend?
  • Question 18

    The development team has provided you with a Kubernetes Deployment file. You have no infrastructure yet and need to deploy the application. What should you do?
  • Question 19

    Mountkirk Games wants to set up a continuous delivery pipeline. Their architecture includes many small services that they want to be able to update and roll back quickly. Mountkirk Games has the following requirements:
    * Services are deployed redundantly across multiple regions in the US and Europe
    * Only frontend services are exposed on the public internet
    * They can provide a single frontend IP for their fleet of services
    * Deployment artifacts are immutable
    Which set of products should they use?
  • Question 20

    Case Study: 5 - Dress4win
    Company Overview
    Dress4win is a web-based company that helps their users organize and manage their personal wardrobe using a website and mobile application. The company also cultivates an active social network that connects their users with designers and retailers. They monetize their services through advertising, e-commerce, referrals, and a freemium app model. The application has grown from a few servers in the founder's garage to several hundred servers and appliances in a collocated data center. However, the capacity of their infrastructure is now insufficient for the application's rapid growth. Because of this growth and the company's desire to innovate faster.
    Dress4Win is committing to a full migration to a public cloud.
    Solution Concept
    For the first phase of their migration to the cloud, Dress4win is moving their development and test environments. They are also building a disaster recovery site, because their current infrastructure is at a single location. They are not sure which components of their architecture they can migrate as is and which components they need to change before migrating them.
    Existing Technical Environment
    The Dress4win application is served out of a single data center location. All servers run Ubuntu LTS v16.04.
    Databases:
    MySQL. 1 server for user data, inventory, static data:
    * - MySQL 5.8
    - 8 core CPUs
    - 128 GB of RAM
    - 2x 5 TB HDD (RAID 1)
    Redis 3 server cluster for metadata, social graph, caching. Each server is:
    * - Redis 3.2
    - 4 core CPUs
    - 32GB of RAM
    Compute:
    40 Web Application servers providing micro-services based APIs and static content.
    * - Tomcat - Java
    - Nginx
    - 4 core CPUs
    - 32 GB of RAM
    20 Apache Hadoop/Spark servers:
    * - Data analysis
    - Real-time trending calculations
    - 8 core CPUS
    - 128 GB of RAM
    - 4x 5 TB HDD (RAID 1)
    3 RabbitMQ servers for messaging, social notifications, and events:
    * - 8 core CPUs
    - 32GB of RAM
    Miscellaneous servers:
    * - Jenkins, monitoring, bastion hosts, security scanners
    - 8 core CPUs
    - 32GB of RAM
    Storage appliances:
    iSCSI for VM hosts
    * Fiber channel SAN - MySQL databases
    * - 1 PB total storage; 400 TB available
    NAS - image storage, logs, backups
    * - 100 TB total storage; 35 TB available
    Business Requirements
    Build a reliable and reproducible environment with scaled parity of production.
    * Improve security by defining and adhering to a set of security and Identity and Access
    * Management (IAM) best practices for cloud.
    Improve business agility and speed of innovation through rapid provisioning of new resources.
    * Analyze and optimize architecture for performance in the cloud.
    * Technical Requirements
    Easily create non-production environment in the cloud.
    * Implement an automation framework for provisioning resources in cloud.
    * Implement a continuous deployment process for deploying applications to the on-premises
    * datacenter or cloud.
    Support failover of the production environment to cloud during an emergency.
    * Encrypt data on the wire and at rest.
    * Support multiple private connections between the production data center and cloud
    * environment.
    Executive Statement
    Our investors are concerned about our ability to scale and contain costs with our current infrastructure. They are also concerned that a competitor could use a public cloud platform to offset their up-front investment and free them to focus on developing better features. Our traffic patterns are highest in the mornings and weekend evenings; during other times, 80% of our capacity is sitting idle.
    Our capital expenditure is now exceeding our quarterly projections. Migrating to the cloud will likely cause an initial increase in spending, but we expect to fully transition before our next hardware refresh cycle. Our total cost of ownership (TCO) analysis over the next 5 years for a public cloud strategy achieves a cost reduction between 30% and 50% over our current model.
    For this question, refer to the Dress4Win case study. To be legally compliant during an audit, Dress4Win must be able to give insights in all administrative actions that modify the configuration or metadata of resources on Google Cloud.
    What should you do?