Pattern 67 / COMMS

Scatter-Gather

Use this when Querying multiple providers or shards at once.

Pressure: Querying multiple providers or shards at once
Mechanism: Send concurrent requests to many targets and gather enough responses to answer
Toll: Slow or failed branches need deadlines, fallbacks, and partial response semantics

Diagram for Scatter-Gather — Architecture plate67

Executive brief

Scatter-Gather fits when Querying multiple providers or shards at once. Mechanism: Send concurrent requests to many targets and gather enough responses to answer. Use it for Federated search, pricing, inventory, multi-region reads. The toll: Slow or failed branches need deadlines, fallbacks, and partial response semantics.

Use when

Federated search, pricing, inventory, multi-region reads.

Example

Use scatter-gather when federated search, pricing, inventory, multi-region reads..

Review framing

Describe the pressure first, then the mechanism, then the cost. That keeps the design grounded.

Same pressure family