Upstream Resiliency

What is load shedding?

• A technique to reject incoming requests

• A messaging channel between clients and the service

• A mechanism to reject requests when a quota is exceeded

• A way to smooth out short-lived spikes in load

What is load leveling?

• A technique to reject incoming requests

• A messaging channel between clients and the service

• A mechanism to reject requests when a quota is exceeded

• A way to smooth out short-lived spikes in load

What is rate-limiting?

• A technique to reject incoming requests

• A messaging channel between clients and the service

• A mechanism to reject requests when a quota is exceeded

• A way to smooth out short-lived spikes in load

What is the purpose of load shedding and load leveling?

• To handle more load by scaling out the service

• To protect the service from getting overloaded

• To enforce pricing tiers for users

• To reduce the impact of DDoS attacks

What is the advantage of rate-limiting?

• It fully protects against DDoS attacks

• It reduces the impact of DDoS attacks

• It ensures constant work under high load

• It allows the system to perform better under stress

What is the drawback of rate-limiting?

• It is slow and expensive

• It requires a shared data store

• It can only partially protect against DDoS attacks

• It increases the complexity of the system

What is the constant work pattern?

• A pattern that keeps the work per unit time constant

• A pattern that performs the necessary work under high load

• A pattern that reduces the impact of DDoS attacks

• A pattern that scales out the service to handle more load

What is the advantage of using the constant work pattern?

• It reduces the complexity of the system

• It allows the system to perform better under stress

• It ensures constant work under high load

• It increases the reliability of configuration updates

What is the self-healing property of the constant work pattern?

• It allows the system to recover from faults automatically

• It reduces the complexity of the system

• It ensures constant work under high load

• It increases the reliability of configuration updates

What is the recommended use case for the constant work pattern?

• Data plane in a cellular architecture

• Relational databases in a data plane

• Key-value stores in a control plane

• Configuration updates in a control plane