From c0e18cca9ddd8f219ae451f596f9d79234c98451 Mon Sep 17 00:00:00 2001
From: Kang Ming <kang.ming1996@gmail.com>
Date: Sun, 6 Mar 2022 19:06:03 +0800
Subject: [PATCH 1/2] fix: make max db pool size configurable

---
 conf/configuration.go | 7 +++++--
 storage/dial.go       | 1 +
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/conf/configuration.go b/conf/configuration.go
index 77f210ce9..dbea9bebe 100644
--- a/conf/configuration.go
+++ b/conf/configuration.go
@@ -38,8 +38,11 @@ type SamlProviderConfiguration struct {
 
 // DBConfiguration holds all the database related configuration.
 type DBConfiguration struct {
-	Driver         string `json:"driver" required:"true"`
-	URL            string `json:"url" envconfig:"DATABASE_URL" required:"true"`
+	Driver string `json:"driver" required:"true"`
+	URL    string `json:"url" envconfig:"DATABASE_URL" required:"true"`
+
+	// MaxPoolSize defaults to 0 (unlimited).
+	MaxPoolSize    int    `json:"max_pool_size" split_words:"true"`
 	MigrationsPath string `json:"migrations_path" split_words:"true" default:"./migrations"`
 }
 
diff --git a/storage/dial.go b/storage/dial.go
index e176851ea..576198194 100644
--- a/storage/dial.go
+++ b/storage/dial.go
@@ -31,6 +31,7 @@ func Dial(config *conf.GlobalConfiguration) (*Connection, error) {
 	db, err := pop.NewConnection(&pop.ConnectionDetails{
 		Dialect: config.DB.Driver,
 		URL:     config.DB.URL,
+		Pool:    config.DB.MaxPoolSize,
 	})
 	if err != nil {
 		return nil, errors.Wrap(err, "opening database connection")

From dddb7d3d4b09ba62c677edf0f386254f6d084041 Mon Sep 17 00:00:00 2001
From: Kang Ming <kang.ming1996@gmail.com>
Date: Sun, 6 Mar 2022 19:09:48 +0800
Subject: [PATCH 2/2] docs: update readme

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 9343f0313..31fc6bb57 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,10 @@ Chooses what dialect of database you want. Must be `mysql`.
 
 Connection string for the database.
 
+`GOTRUE_DB_MAX_POOL_SIZE` - `int`
+
+Sets the maximum number of open connections to the database. Defaults to 0 which is equivalent to an "unlimited" number of connections.
+
 `DB_NAMESPACE` - `string`
 
 Adds a prefix to all table names.