From a90289a1935f1ccaa63a4c20e772b806fc493b27 Mon Sep 17 00:00:00 2001
From: Galen Kistler <109082771+gtk-grafana@users.noreply.github.com>
Date: Wed, 19 Apr 2023 08:24:09 -0500
Subject: [PATCH] Prometheus: mark queries with instant results as invalid for
 incremental querying (#66846)

mark queries with instant results as invalid for incremental querying
---
 .../app/plugins/datasource/prometheus/querycache/QueryCache.ts  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/public/app/plugins/datasource/prometheus/querycache/QueryCache.ts b/public/app/plugins/datasource/prometheus/querycache/QueryCache.ts
index 1551139fd8d..2ba7ca76c42 100644
--- a/public/app/plugins/datasource/prometheus/querycache/QueryCache.ts
+++ b/public/app/plugins/datasource/prometheus/querycache/QueryCache.ts
@@ -235,7 +235,7 @@ export class QueryCache {
     const newTo = request.range.to.valueOf();
 
     // only cache 'now'-relative queries (that can benefit from a backfill cache)
-    const shouldCache = request.rangeRaw?.to?.toString() === 'now';
+    const shouldCache = request.rangeRaw?.to?.toString() === 'now' && !request.targets.some((targ) => targ.instant);
 
     // all targets are queried together, so we check for any that causes group cache invalidation & full re-query
     let doPartialQuery = shouldCache;