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registry: switch to fine-grained leasing for flow lifecycle #2127

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k8s-ci-robot merged 3 commits into from
Jan 14, 2026
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registry: switch to fine-grained leasing for flow lifecycle #2127

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ba8b4b0
registry: replace gc lock with optimistic leasing
LukeAVanDrie Jan 12, 2026
1814907
registry: use mutex for flowState to fix GC races
LukeAVanDrie Jan 13, 2026
3ec5d7e
registry: add test for markedForDeletion race
LukeAVanDrie Jan 13, 2026
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8 changes: 0 additions & 8 deletions pkg/epp/flowcontrol/registry/doc.go
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Expand Up @@ -16,8 +16,6 @@ limitations under the License.

// Package registry provides the concrete implementation of the `contracts.FlowRegistry` interface.
//
// # Architecture: A Sharded, Concurrent Control Plane
//
// This package implements the flow control state machine using a sharded architecture to enable scalable, parallel
// request processing. It separates the orchestration control plane from the request-processing data plane.
//
Expand All @@ -27,10 +25,4 @@ limitations under the License.
// read-optimized, concurrent-safe view for a single `controller.FlowController` worker.
// - `managedQueue`: A stateful decorator around a `framework.SafeQueue`. It is the fundamental unit of state,
// responsible for atomically tracking statistics (e.g., length and byte size) and ensuring data consistency.
//
// # Concurrency Model
//
// The registry uses a multi-layered strategy to maximize performance on the hot path while ensuring correctness for
// administrative tasks.
// (See the `FlowRegistry` struct documentation for detailed locking rules).
package registry
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