From 8ef7789769f25f9045a137ef291586dbad23a398 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ivar=20Conradi=20=C3=98sthus?= <ivarconr@gmail.com>
Date: Tue, 30 Aug 2022 13:53:28 +0200
Subject: [PATCH] fix: Sliding window functionality for summaries (#1999)

Make the percentile metrics more adaptive to changes.
https://github.com/siimon/prom-client#summary
---
 src/lib/metrics.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lib/metrics.ts b/src/lib/metrics.ts
index 3360c6e9b8..263f5e7744 100644
--- a/src/lib/metrics.ts
+++ b/src/lib/metrics.ts
@@ -50,12 +50,16 @@ export default class MetricsMonitor {
             help: 'App response time',
             labelNames: ['path', 'method', 'status'],
             percentiles: [0.1, 0.5, 0.9, 0.95, 0.99],
+            maxAgeSeconds: 600,
+            ageBuckets: 5,
         });
         const dbDuration = new client.Summary({
             name: 'db_query_duration_seconds',
             help: 'DB query duration time',
             labelNames: ['store', 'action'],
             percentiles: [0.1, 0.5, 0.9, 0.95, 0.99],
+            maxAgeSeconds: 600,
+            ageBuckets: 5,
         });
         const featureToggleUpdateTotal = new client.Counter({
             name: 'feature_toggle_update_total',