0.34.6_repo_cleanup

src/balance/health.rs

@@ -112,14 +112,10 @@ impl BackendState {
         }
     }
     pub fn healthy(&self) -> bool {
-        // No lock/clock acquisition for a healthy backend. Only an unhealthy
-        // backend enters the quarantine/cooldown recovery path below.
         if self.healthy_cached.load(Ordering::Acquire) {
             return true;
         }
         let mut h = lock(&self.health);
-        // Passive-only monitoring has no active probes to recover an ejected
-        // backend. After a bounded quarantine, allow one new traffic attempt.
         if !h.passive_healthy && h.active_healthy && !h.checked {
             if h.passive_ejected_at
                 .is_some_and(|at| at.elapsed() >= h.passive_cooldown)
@@ -173,8 +169,6 @@ impl BackendState {
             .saturating_add(self.bytes_out.load(Ordering::Relaxed));
         let delta = total.saturating_sub(sample.total);
         if delta == 0 {
-            // No bytes moved in this sampling window: report an actual idle backend
-            // instead of keeping a decaying EWMA tail that looks like live traffic.
             sample.rate = 0.0;
         } else {
             let rate = delta as f64 / elapsed;
@@ -367,8 +361,6 @@ impl BackendState {
         self.observe_passive_with_detail(active, passive, reason, reason, reason, elapsed);
     }
 
-    /// Returns the first failure in a consecutive counted streak only when
-    /// this observation actually removes the backend from the traffic pool.
     fn observe_passive_with_detail(
         &self,
         active: &HealthCheck,
@@ -400,8 +392,6 @@ impl BackendState {
         if !passive.counts(reason) {
             return None;
         }
-        // A fan-out of failures from one expired H2 connection must not count
-        // as independent failed backend observations in a single instant.
         if reason == "io_error" {
             let now = Instant::now();
             if h.last_io_counted_at
@@ -459,8 +449,6 @@ pub struct Member {
     pub backend: Arc<CompiledBackend>,
     pub definition: PoolMember,
     pub state: Arc<BackendState>,
-    // Immutable effective per-backend policies are compiled once per pool
-    // generation, not deep-cloned for every request/lease.
     health_settings: Arc<HealthCheck>,
     passive_settings: Arc<PassiveHealth>,
     token: String,