1 table t1
(to be cached
) inserted into target db
2 table t1 cached into csql
3 table t2
(not cached
) inserted into target db
4 table t3 inserted into csql db
6 csql down
: delete t1
(cached table
) success
7 csql down
: delete from t2
(not cached mysql table
) success
8 csql down
: delete from t3
(not cached csql table
) failed
