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broker: make Postgres pool size configurable, bump default 5 → 8

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Under concurrent door executions the broker was queueing on its 5-connection
pool, adding latency to tool calls that fanned out from the same run. Bump
the default to 8 (one connection per concurrent door before queueing) and
expose CLAWMATES_BROKER_POOL_SIZE so the fleet can tune it up as the load
grows without a rebuild.
This commit is contained in:
Omar Sobh
2026-07-05 18:49:17 -07:00
parent e2c82d9a93
commit 3b382d659a
1 changed files with 11 additions and 4 deletions
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crates/bins/clawmates-broker/src/main.rs
+11 -4
View File
@@ -3,9 +3,10 @@
//! it by construction.
//!
//! Configuration (environment):
//! - `CLAWMATES_DATABASE__URL` Postgres connection string (required)
//! - `CLAWMATES_BROKER_SOCKET` unix socket path (default /tmp/clawmates-broker.sock)
//! - `CLAWMATES_BROKER_KEY_FILE` master key file; generated on first boot
//! - `CLAWMATES_DATABASE__URL` Postgres connection string (required)
//! - `CLAWMATES_BROKER_SOCKET` unix socket path (default /tmp/clawmates-broker.sock)
//! - `CLAWMATES_BROKER_KEY_FILE` master key file; generated on first boot
//! - `CLAWMATES_BROKER_POOL_SIZE` max Postgres connections (default 8)
use std::path::PathBuf;
use std::process::ExitCode;
@@ -45,7 +46,13 @@ async fn run() -> Result<(), String> {
}
let key = FileKey::load(&key_path).map_err(|e| format!("key load failed: {e}"))?;
let pool = cm_db::connect(&database_url, 5)
// Pool size defaults to 8: one broker connection per concurrent door
// execution before we start queueing. Tune via env when the fleet grows.
let pool_size: u32 = std::env::var("CLAWMATES_BROKER_POOL_SIZE")
.ok()
.and_then(|v| v.parse().ok())
.unwrap_or(8);
let pool = cm_db::connect(&database_url, pool_size)
.await
.map_err(|e| format!("database connection failed: {e}"))?;