From ab7c92a28b95707859ab88284e350ad8c7e70324 Mon Sep 17 00:00:00 2001
From: Gabe Jackson <gabe@coffeepowered.co>
Date: Tue, 8 Dec 2020 11:44:30 -0500
Subject: [PATCH] Limit configuration database connections (#16512)

When configuration is backed by a database, a separate pool of
connections is used for access from the primary database. This
change sets sensible config DB connection limits in order to
reduce database resource usage at scale.
---
 config/database.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/config/database.go b/config/database.go
index 98218c4700..56e5a0fa57 100644
--- a/config/database.go
+++ b/config/database.go
@@ -47,6 +47,9 @@ func NewDatabaseStore(dsn string) (ds *DatabaseStore, err error) {
 	if err != nil {
 		return nil, errors.Wrapf(err, "failed to connect to %s database", driverName)
 	}
+	// Set conservative connection configuration for configuration database.
+	db.SetMaxIdleConns(0)
+	db.SetMaxOpenConns(2)
 
 	defer func() {
 		if err != nil {