I/O Patterns

Deep-dives into each pattern -- state machines, ops contracts, and working examples

The Driver SDK provides four I/O patterns. Each defines a state machine, an ops contract, poll semantics, and error behavior. These pages are the complete reference for each pattern.

Not sure which pattern to use? Start with Choosing a Pattern.

P1: Pure Stream

Bidirectional byte pipe -- read and write are independent, concurrent streams

P2: Write-then-Read

Request/response -- write submits a request, read retrieves the response

P3: Event Stream

Read-only event broadcast with first-open/last-close activation

P4: Configured Stream

Heavy upfront configuration, then streaming output -- the inference pattern