pub const MAX_CONCURRENCY: usize = _ /* 5usize */;Expand description
Upper bound on MessagesApi::search_summaries’s concurrency
parameter, regardless of what the caller (CLI --concurrency or the MCP
concurrency param) requests.
Bounds fan-out to one second’s read budget (100 units / 20 units per get). This limits in-flight work, not sustained request rate: fast calls can still consume quota faster than the pacing budget.