v0.31.8

src/cache/lookup/tiered.rs

@@ -170,7 +170,10 @@ impl Cache {
             Some(validators) => validators.last_modified.clone(),
             None => headers.get("last-modified").cloned(),
         };
-        let initial_capacity = fill_size.min(64 * 1024);
+        let transformed = parts.extensions.get::<crate::transform::Applied>().is_some();
+        // A transformed, fully buffered body normally arrives as one owned
+        // frame. Do not allocate a second fill buffer before inspecting it.
+        let initial_capacity = if transformed { 0 } else { fill_size.min(64 * 1024) };
         let Some(mut fill_gauge) = FillGauge::new(self.clone(), initial_capacity, settings) else {
             self.counters.rejected_fills.fetch_add(1, Ordering::Relaxed);
             self.record_reason(&ticket.scope, &ticket.domain, "hot_memory_pressure");
@@ -191,15 +194,14 @@ impl Cache {
             plan,
             headers,
             data,
+            shared: None,
+            shared_allocated: 0,
             fill_gauge,
             settings: settings.clone(),
             skip_compression: parts.extensions.get::<crate::compression::Skip>().is_some(),
             origin_etag,
             origin_last_modified,
-            transformed: parts
-                .extensions
-                .get::<crate::transform::Applied>()
-                .is_some(),
+            transformed,
             _permit: permit,
             _fill_leader: fill_leader,
         };