Attempt to fix 'database is locked' error

db/db.go

@@ -19,6 +19,11 @@ func init() {
 	if err != nil {
 		log.Fatal(err)
 	}
+
+	// fix 'database is locked' error
+	// see https://github.com/mattn/go-sqlite3/issues/274#issuecomment-191597862
+	_db.SetMaxOpenConns(1)
+
 	migrate(_db)
 }
 

go.mod

@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/dustin/go-humanize v1.0.1
-	github.com/ekzyis/snappy v0.8.0
+	github.com/ekzyis/snappy v0.8.2
 	github.com/joho/godotenv v1.5.1
 	github.com/mattn/go-sqlite3 v1.14.22
 )

go.sum

@@ -1,7 +1,7 @@
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
-github.com/ekzyis/snappy v0.8.0 h1:e7dRR384XJgNYa1FWNIZmqITSHOSanteBFXQJPfcQwg=
+github.com/ekzyis/snappy v0.8.2 h1:fT+IekT9QMg82waxfo5Qtutb5pZIJDTiw/iK0kYhRKs=
-github.com/ekzyis/snappy v0.8.0/go.mod h1:UksYI0dU0+cnzz0LQjWB1P0QQP/ghx47e4atP99a5Lk=
+github.com/ekzyis/snappy v0.8.2/go.mod h1:UksYI0dU0+cnzz0LQjWB1P0QQP/ghx47e4atP99a5Lk=
 github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=