Design Job Scheduler System Design Interview

1. Problem Statement

2. Architecture Discussion Map

Use this as one discussion aid, not a single correct answer. Your design should follow from the requirements, scale, and trade-offs you establish.

graph LR
    A["Design Job Scheduler"]
    A --> F1["Leader Election Raft/Paxos/Etcd"]
    A --> F2["Fault Tolerance Worker crashing mid-task"]
    A --> F3["Scheduling Algorithms Heap/Priority Queue"]
    A --> F4["Exactly-once Semantics"]
    A --> F5["Horizontal Scaling"]

3. Key Focus Areas

• 1
  Leader Election (Raft/Paxos/Etcd)
• 2
  Fault Tolerance (Worker crashing mid-task)
• 3
  Scheduling Algorithms (Heap/Priority Queue)
• 4
  Exactly-once Semantics
• 5
  Horizontal Scaling