Hi all,
If I have a setup with one master and one slave MySQL instance. When the master goes down, the application moves to using the slave instance for its
JDBC connections. Now, the problem is that the JDBC connection is quicker than the "stop slave" operation -- that is, after a crash, the application starts pounding the slave server with SQL UPDATEs
before the slave has synched itself from the master's transaction log.
This is rather unpleasant because the application might update a record, be told it's fine, and then the change would be overridden by an update coming from the synchronization process.
This begs the question, is there any way to temporarily prevent the application from executing SQL statements against the slave until it has finished the replication (anything between 1 second and 5 minutes)?