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apollo_propeller: add inbound_channel_capacity config field #13346

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Merged
sirandreww-starkware merged 1 commit into from
Jun 11, 2026
Merged

apollo_propeller: add inbound_channel_capacity config field #13346

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5 changes: 5 additions & 0 deletions crates/apollo_propeller/src/config.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,10 @@ pub struct Config {
pub stream_protocol: StreamProtocol,
/// Maximum size of a message sent over the wire.
pub max_wire_message_size: usize,
/// Capacity of the bounded channel between each handler and the engine for inbound units.
/// Controls back-pressure: when the channel is full, the handler stops reading from the
/// network, causing yamux flow control to slow the remote peer.
pub inbound_channel_capacity: usize,
}

impl Default for Config {
Expand All @@ -23,6 +27,7 @@ impl Default for Config {
stale_message_timeout: Duration::from_secs(120),
stream_protocol: StreamProtocol::new("/propeller/0.1.0"),
max_wire_message_size: 1 << 20, // 1 MB
inbound_channel_capacity: 16,
}
}
}
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