Problems

11 problems for Solutions Architect. Read any of them; sign in to code, run and submit.

Fall back to a second model on timeoutasyncio · Resilience patterns · LLM integration~20 minMedium
Lowest-latency route between servicesGraphs · Heaps~25 minMedium
Implement a circuit breakerResilience patterns · Simulation and state machines · Classes and objects~30 minHard
Partition keys with a consistent hash ringHashing · Binary search~30 minHard
Plan multi-region trafficResilience patterns · Sorting · Simulation and state machines~30 minHard
Plan server capacity at minimum costDynamic programming · Time and space complexity~40 minHard
Advance a Raft leader's commit indexSimulation and state machines · Sorting~45 minExpert
Build a resilient LLM gatewayResilience patterns · Retries and backoff · LLM integration~60 minExpert
Exactly-once effects over at-least-once deliverySimulation and state machines · Hashing · ETL pipelines~45 minExpert
Order events with vector clocksSimulation and state machines · Dictionaries~40 minExpert
Weighted fair-share job schedulerHeaps · Simulation and state machines~60 minExpert