[Cache] Fix: If can not connect to the memcache
[Model/Model] Fix: Optimization of database-related
[merge] origin/develop
[selftest] Fix: new logic
[OnePiece5] Change: Admin method is speed up more
[PDO/DDL] Fix: add primary key
Merge branch 'develop-selftest' of https://github.com/TomoakiNagahara/op-core into develop-selftest