feat: editor write path

internal/infrastructure/persistence/database/postgres.go

@@ -7,6 +7,7 @@ import (
 	"net"
 	"net/url"
 	"reflect"
+	"slices"
 	"time"
 
 	"github.com/jackc/pgx/v5/pgconn"
@@ -23,6 +24,8 @@ const (
 	postgresUTCCallback           = "renewcms:postgres_utc"
 	gormQueryCallback             = "gorm:query"
 	postgresLockNotAvailable      = "55P03"
+	postgresDeadlockDetected      = "40P01"
+	postgresSerializationFailure  = "40001"
 )
 
 var timeType = reflect.TypeOf(time.Time{})
@@ -109,7 +112,9 @@ func (postgresDriver) NewBackup(db *gorm.DB, directory string, now func() time.T
 	return NewPostgresBackup(db, directory, now)
 }
 
+var postgresContentionCodes = []string{postgresLockNotAvailable, postgresDeadlockDetected, postgresSerializationFailure}
+
 func (postgresDriver) IsLockContention(err error) bool {
 	var failure *pgconn.PgError
-	return errors.As(err, &failure) && failure.Code == postgresLockNotAvailable
+	return errors.As(err, &failure) && slices.Contains(postgresContentionCodes, failure.Code)
 }