First commit Go counter service

review/_proof_tests/a/internal/store/review_test.go

@@ -0,0 +1,36 @@
+package store
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+
+	"migadu_counters/internal/config"
+)
+
+func TestReview_TimeoutAfterWriteStillCounts(t *testing.T) {
+	st, err := New(config.RedisConfig{WriteAddr: "127.0.0.1:16401", PoolSize: 4, TimeoutMS: 500})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer st.Close()
+	admin := redis.NewClient(&redis.Options{Addr: "127.0.0.1:16401"})
+	defer admin.Close()
+	key := "cnt/A/review@example.com/d/2026-10-14/o"
+	admin.Del(context.Background(), key)
+	admin.Set(context.Background(), key, "99", 0) // limit 100: next increment crosses
+	// warm the pool
+	if err := st.Ping(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	go admin.Do(context.Background(), "DEBUG", "SLEEP", "1") // server stall > timeout_ms
+	time.Sleep(50 * time.Millisecond)
+	_, err = st.Incr(context.Background(), []string{key}, 1)
+	t.Logf("Incr error: %v", err)
+	time.Sleep(1500 * time.Millisecond)
+	v, _ := admin.Get(context.Background(), key).Result()
+	t.Logf("key after the 'failed' Incr: %s", v)
+	admin.Del(context.Background(), key)
+}