From ccd86002cfaca77cd4308e2510f3084753ab47ec Mon Sep 17 00:00:00 2001
From: Cedric Den Haese <cedric.den.haese@gmail.com>
Date: Mon, 8 Jul 2019 09:21:08 +0100
Subject: [PATCH] Fix TTL bug lastRegistredAt element was only set at creation
 of a time series. Now it is updated every time a new event is seen for that
 time series.

Signed-off-by: Cedric Den Haese <cedric.den.haese@gmail.com>
---
 registry.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/registry.go b/registry.go
index 64a58b3d..df16dee2 100644
--- a/registry.go
+++ b/registry.go
@@ -169,6 +169,8 @@ func (r *registry) get(metricName string, hash labelHash, metricType metricType)
 
 	rm, ok := metric.metrics[hash.values]
 	if ok {
+		now := clock.Now()
+		rm.lastRegisteredAt = now
 		return metric.vectors[hash.names].holder, rm.metric
 	}