Module routing 

Query Routing for Distributed Dakera

Handles routing of queries across shards:

• Scatter-gather for similarity search
• Load balancing across replicas
• Result merging and ranking
• Consistency-aware routing (Turbopuffer-inspired)

Structs

MergedResults

Merged results from scatter-gather

NodeTarget

Target node for a shard query

QueryPlan

Plan for executing a distributed query

QueryRouter

Query router for distributed operations

RouterConfig

Configuration for query routing

RouterStats

Statistics about routing state

ShardResult

Result from a single shard

Enums

RoutingStrategy

Strategy for selecting among replica nodes