Add ADR draft

apps/website/docs/adr/barrier_circuit_breaker.md

@@ -0,0 +1,54 @@
+---
+title: Barrier Circuit Breaker
+
+outline: [2, 3]
+
+version: v0.13
+---
+
+# Barrier Circuit Breaker
+
+This ADR is effective starting from [v0.13](/releases/0-13).
+
+::: tip TL;DR
+
+Added optional `circuitBreaker` to [`createBarrier`](/api/factories/create_barrier) to allow adding custom circuit breaker logic to a [_Barrier_](/api/primitives/barrier).
+
+```ts
+const authBarrier = createBarrier({
+  activateOn: {
+    failure: isHttpErrorCode(401),
+  },
+  perform: [getTokenMutation],
+  circuitBreaker({ performed, deactivated, $active, breakCircuit }) {
+    const $times = createStore(0);
+
+    sample({
+      clock: performed,
+      filter: $active,
+      source: $times,
+      fn: (times) => times + 1,
+      target: $times,
+    });
+
+    sample({
+      clock: $times,
+      filter: (times) => times > 10,
+      target: breakCircuit,
+    });
+
+    sample({
+      clock: deactivated,
+      target: $times.reinit,
+    });
+  },
+});
+```
+
+:::
+
+## Problem
+
+::: tip
+Original issue: [farfetched#458](https://github.com/igorkamyshev/farfetched/issues/458)
+:::