TAC mode is actually a variant of the
TCC mode. Just as the name implies, the
TAC mode is called automatic rollback. As compared with the
TCC mode, the user doesn’t have to concern about how to write the rollback method at all.
and then it can reduces user development volume and is entirely transparent to users.
TACMode is only suitable for Relational Database.
TACMode will intercept the user’s SQL statement to generate reverse rollback SQL, and the compatibility of SQL will also be a ordeal.