substrate

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Omer Yahud 5599821bde atenet-router: take parking-lot slots at the park transition, not at admission

The lot admitted every request before its resume lookup, so a full lot
shed traffic to already-RUNNING actors — exactly the starvation
docs/request-parking.md rules out (agent-substrate/substrate#1081), and
TestHandleRequestHeaders_ParkingLotFull pinned that behavior as expected.

Replace the resumer's singleflight.Group with a per-actor flight
registry whose flights signal their park transition (the first
retryable error). A caller now waits slot-free while its flight
resolves, acquires a slot only once the flight parks, and is shed with
the existing 503 "router at capacity" only at that transition — after
the single attempt that revealed it would have to wait. Requests
resolved on the first attempt never touch the lot, so a saturated lot
cannot starve running-actor traffic, and parking.active /
parking.wait.duration now count only genuinely parked requests.

2026-09-15 09:56:33 -07:00

assets

Add initial threat model for substrate (#303 )

2026-07-01 10:31:39 -07:00

dev

docs: add a metrics best-practices guide for component authors (#1553 )

2026-09-10 09:15:11 +02:00

metrics

Move from Host header to explicit headers for actor and atespace

2026-09-09 13:23:36 -07:00

api-guide.md

docs: call out the 30-minute eviction window and risk in the API guide (#1618 )