Design and architecture

Question 1

What are some common challenges related to network communication that SREs need to address?

Answer 1

challenges: network latency, service discovery, load balancing, and security

Question 2

Describe strategies you would employ to ensure reliable, low-latency, and secure communication between microservices?

Answer 2

1. Service Mesh: manage service-to-service communication
2. Circuit Breakers: prevent cascading failures.
3. API Gateway: centralized routing, authentication, and rate limiting
4. Service Discovery: dynamic service registration and discovery
5. Observability: Employ distributed tracing, logging, and monitoring
6. Encryption and Authentication: use protocols like TLS/SSL. Use mutual authentication for service-level security.

Question 3

Describe the principles of “Failover”?

Answer 3

Failover is when we automatically redirect traffic from a failed or degraded component to a healthy backup

Question 4

Describe the principles of “Fallback”?

Answer 4

Fallback is a strategy used when a component’s primary method fails, and a secondary or alternative method is used as a backup