From 081953776b6d2f0388adf3ee8811155a69c69c4c Mon Sep 17 00:00:00 2001
From: Bel LaPointe <153096461+breel-render@users.noreply.github.com>
Date: Fri, 3 Oct 2025 11:38:59 -0600
Subject: [PATCH] omit last unused span

---
 cmd/kv-write-canary/main.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cmd/kv-write-canary/main.go b/cmd/kv-write-canary/main.go
index 7db4551..dfaf62d 100644
--- a/cmd/kv-write-canary/main.go
+++ b/cmd/kv-write-canary/main.go
@@ -73,7 +73,11 @@ func poll(ctx context.Context, client *valkey.Client) Poll {
 		waitSuccess(ctx, client, func(s string) {
 			writes = append(writes, s)
 		})
-		spans = append(spans, [2]time.Time{time.Now(), time.Now()})
+		now := time.Now()
+		spans = append(spans, [2]time.Time{now, now})
+	}
+	if last := spans[len(spans)-1]; last[1] == last[0] {
+		spans = spans[:len(spans)-1]
 	}
 	return Poll{Spans: spans, Writes: writes}
 }