Infrastructure Coding Practice | Dataford Interview Questions

Tell me about your experience solving coding problems related to infrastructure and SRE work.

For the hands-on coding portion, implement a function that identifies services with sustained failures. Given chronologically ordered health-check events, return the service names that have at least threshold consecutive DOWN checks, resetting a service's count whenever an UP check appears.

Function signature: def find_sustained_outages(events, threshold):. Each event is [timestamp, service_name, status]; return a sorted list of service names.

Constraints

1 <= len(events) <= 500
1 <= threshold <= len(events)
Each event has the form [timestamp, service_name, status]
Events are ordered by nondecreasing timestamp
service_name is a non-empty string
status is either "UP" or "DOWN"
Each event belongs to one service

Function Signature

def find_sustained_outages(events, threshold):

Your question is Infrastructure Coding Practice. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Tell me about your experience solving coding problems related to infrastructure and SRE work.

Function signature: def find_sustained_outages(events, threshold):. Each event is [timestamp, service_name, status]; return a sorted list of service names.

Constraints

1 <= len(events) <= 500
1 <= threshold <= len(events)
Each event has the form [timestamp, service_name, status]
Events are ordered by nondecreasing timestamp
service_name is a non-empty string
status is either "UP" or "DOWN"
Each event belongs to one service

Function Signature

def find_sustained_outages(events, threshold):

Your question is Infrastructure Coding Practice. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.