Exam Associate Cloud Engineer topic 1 question 62 discussion

Go to cloud console and create instance select Memorystore with Basic tier, select us-central1 and us-central1-a, and capacity 32GB, the cost estimate is $0.023/GB/hr select VM instance with custom machine type with 6 vCPUs and 32 GB memory, the same region and zone as Memorystore setting, the cost estimate is $0.239/hr Option B will definitely cost more as it adds on CPU usage cost even it uses little in this scenario, but still charge you. So answer is A from real practice example.

Correct Answer should be A: The question mention "You want to have a 30-GB in-memory cache, and need an additional 2 GB of memory for the rest of the processes" What is Google Cloud Memorystore? Overview. Cloud Memorystore for Redis is a fully managed Redis service for Google Cloud Platform. Applications running on Google Cloud Platform can achieve extreme performance by leveraging the highly scalable, highly available, and secure Redis service without the burden of managing complex Redis deployments.

Both Gemini and Claude.ai wotes for B. You need to run a reverse proxy server in this can you can eliminate A.

You need 30 GB of in-memory cache plus an additional 2 GB for other processes. The solution should minimize cost while fulfilling the memory requirements. Option Analysis: A. Create a Cloud Memorystore for Redis instance with 32-GB capacity: Incorrect: While Memorystore is designed for caching, it does not meet the requirement to host an HTTP reverse proxy. Memorystore is only a caching layer, not a compute platform for running processes. B. Run it on Compute Engine with a custom instance type: Correct: Compute Engine allows you to specify a custom machine type tailored to your exact resource requirements (e.g., 6 vCPUs and 32 GB of memory). This minimizes cost compared to using a predefined machine type. The reverse proxy can run directly on the Compute Engine instance, and the memory requirements are fulfilled.

Im choice B because the question is `This specific reverse proxy consumes almost no CPU. You want to have a 30-GB in-memory cache, and need an additional 2 GB of memory for the rest of the processes`, they need additional 2 GB of memory for the rest of the processes and maybe cannot running at Redis.

Las razones por las que cada opción es o no adecuada: A: INCORRECTA. Cloud Memorystore es un servicio de caché administrado, no puede ejecutar un proxy HTTP. B: INCORRECTA. 6 vCPUs es excesivo ya que se especifica que consume casi nada de CPU. Sería un desperdicio de recursos y dinero. C: INCORRECTA. GKE sería una sobrecarga innecesaria para una única instancia y n1-standard-32 es extremadamente sobredimensionado. D: CORRECTA. Una n1-standard-1 (1 vCPU, 3.75GB RAM) con un disco SSD de 32GB es la opción más económica que cumple los requisitos mínimos necesarios para el proxy. La D es la correcta porque es la opción más económica que proporciona los recursos necesarios. Un SSD persistente puede usarse para swap si se necesita más memoria, aunque no será tan rápido como la memoria RAM.

A. Redis isn't used as storage for caching proxies - it is a kind of key-value store. B. fulfills the requirements, e.g. take nginx use a RAM disk for caching C. wrong machine type (32 vCPU), don't need k8s D. technically possible, but does not fulfill "in memory" requirement

La n1-standard-1 es una instancia de bajo costo con 1 vCPU y 3.75 GB de memoria, suficiente para los procesos adicionales del proxy. Dado que el proxy inverso prácticamente no consume CPU, no es necesario optar por una instancia más grande. El disco persistente SSD de 32 GB puede actuar como almacenamiento para la caché en lugar de usar costosas soluciones en memoria, lo que ayuda a minimizar costos, mientras proporciona un almacenamiento rápido, suficiente para el sitio sensible a la latencia.

A might be a fine answer, except that Redis is not an http reverse proxy. It is a data cache. So A, regardless of the cost, does not work for this use case.

Correct Answer:B

A is correct because The question mention "You want to have a 30-GB in-memory cache, and Redis is inmemory

B. Run it on Compute Engine, and choose a custom instance type with 6 vCPUs and 32 GB of memory.

A is the correct as redis for low latency

Low latency should be A.

correct answer is A https://www.youtube.com/watch?v=a1p1pB375Ik

ANSWER A is the most cost-effective solution for running a caching HTTP reverse proxy on GCP. Cloud Memorystore for Redis is a managed service that provides an in-memory cache for your applications. It offers a high throughput and low latency access to the Redis protocol. Cloud Memorystore offers an SLA of 99.9% availability and automatic failover for Redis instances. In this case, a 32-GB Redis instance is sufficient to accommodate the 30-GB cache and the additional 2 GB of memory required for the rest of the processes. This solution is highly scalable and allows you to increase the size of the Redis instance as your needs grow.

A. Create a Cloud Memorystore for Redis instance with 32-GB capacity is the recommended option. This option provides the required memory and is cost-effective since the proxy requires almost no CPU. Cloud Memorystore for Redis is designed specifically for in-memory caching, making it the best choice for your use case.