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feat(routing): move sticky-key retries into routing policy with lazy attempts

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Replace the provider/endpoint max_retries fields as the source of same-key
retries with a routing policy setting, sticky_key_attempts (default 2). Only
the first-ranked candidate is retried on the same key; every failover
candidate gets a single attempt so failover keeps advancing instead of
retrying each fallback key.

Materialize exactly one attempt per candidate and derive same-key retries in
the attempt loop after a candidate-scoped failure, so the retry budget no
longer inflates up-front materialization and needs no upper bound. The budget
travels in the report context; retries reuse the plan with a fresh candidate
id and incremented retry index. Pool groups only retry their first key within
the retry-index stride.

Expose the setting in the routing profile editor and the set_scheduling rule
action, and drop the max_retries input from the provider form.
This commit is contained in:
elky
2026-09-02 20:48:40 +08:00
parent 415b2da81b
commit 7323d41fbe
40 changed files with 851 additions and 570 deletions
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apps/aether-gateway/src/ai_serving/planner/candidate_source.rs
+3
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@@ -1889,6 +1889,7 @@ mod tests {
priority_mode: aether_routing_core::RoutingSetPriorityMode::Provider,
scheduling_mode: aether_routing_core::RoutingSchedulingMode::FixedOrder,
keep_priority_on_conversion: false,
sticky_key_attempts: aether_routing_core::DEFAULT_STICKY_KEY_ATTEMPTS,
ranking_overlay: Default::default(),
mutation_plan: Default::default(),
pool_policy_overrides: Default::default(),
@@ -1952,6 +1953,7 @@ mod tests {
priority_mode: aether_routing_core::RoutingSetPriorityMode::Provider,
scheduling_mode: aether_routing_core::RoutingSchedulingMode::FixedOrder,
keep_priority_on_conversion: false,
sticky_key_attempts: aether_routing_core::DEFAULT_STICKY_KEY_ATTEMPTS,
ranking_overlay: Default::default(),
mutation_plan: Default::default(),
pool_policy_overrides: Default::default(),
@@ -2689,6 +2691,7 @@ mod tests {
priority_mode: aether_routing_core::RoutingSetPriorityMode::Provider,
scheduling_mode: aether_routing_core::RoutingSchedulingMode::FixedOrder,
keep_priority_on_conversion: true,
sticky_key_attempts: aether_routing_core::DEFAULT_STICKY_KEY_ATTEMPTS,
ranking_overlay: Default::default(),
mutation_plan: Default::default(),
pool_policy_overrides: Default::default(),