Use a connection pool for Postgres

.vscode/settings.json

@@ -16,6 +16,7 @@
     "congstar",
     "datetime",
     "dbname",
+    "dbpool",
     "DBSTRING",
     "easybox",
     "Eo's",
@@ -55,6 +56,7 @@
     "PGPORT",
     "pgtype",
     "PGUSER",
+    "pgxpool",
     "Prés",
     "pressly",
     "psql",

go.mod

@@ -12,11 +12,13 @@ require (
 	github.com/andybalholm/cascadia v1.3.1 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/puddle/v2 v2.2.1 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/mmcdole/goxpp v1.1.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	golang.org/x/crypto v0.17.0 // indirect
 	golang.org/x/net v0.10.0 // indirect
+	golang.org/x/sync v0.1.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 )

main.go

@@ -7,12 +7,12 @@ import (
 	"net/http"
 
 	"github.com/TheLovinator1/FeedVault/db"
-	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
 )
 
 var (
-	conn *pgx.Conn
+	dbpool *pgxpool.Pool
-	DB   *db.Queries
+	DB     *db.Queries
 )
 
 func init() { log.SetFlags(log.LstdFlags | log.Lshortfile) }
@@ -21,16 +21,21 @@ func init() {
 	ctx := context.Background()
 
 	// Open a database connection
-	conn, err := pgx.Connect(ctx, "postgresql://localhost/feedvault?user=feedvault&password=feedvault")
+	dbpool, err := pgxpool.New(ctx, "postgresql://localhost/feedvault?user=feedvault&password=feedvault")
 	if err != nil {
 		log.Fatalf("pgx.Connect(): %v", err)
 	}
 
-	DB = db.New(conn)
+	DB = db.New(dbpool)
+
+	// Test the connection
+	if err := dbpool.Ping(ctx); err != nil {
+		log.Fatalf("dbpool.Ping(): %v", err)
+	}
 }
 
 func main() {
-	defer conn.Close(context.Background())
+	defer dbpool.Close()
 
 	log.Print("Starting server")