GrpcConnectionCount is the max gRPC connections that will be established with each tikv-server. Optional: Defaults to 16

After a duration of this time in seconds if the client doesn’t see any activity it pings the server to see if the transport is still alive. Optional: Defaults to 10

After having pinged for keepalive check, the client waits for a duration of Timeout in seconds and if no activity is seen even after that the connection is closed. Optional: Defaults to 3

CommitTimeout is the max time which command ‘commit’ will wait. Optional: Defaults to 41s

MaxTxnTimeUse is the max time a Txn may use (in seconds) from its startTS to commitTS. Optional: Defaults to 590

MaxBatchSize is the max batch size when calling batch commands API. Optional: Defaults to 128

If TiKV load is greater than this, TiDB will wait for a while to avoid little batch. Optional: Defaults to 200

MaxBatchWaitTime in nanosecond is the max wait time for batch. Optional: Defaults to 0

BatchWaitSize is the max wait size for batch. Optional: Defaults to 8

If a Region has not been accessed for more than the given duration (in seconds), it will be reloaded from the PD. Optional: Defaults to 600

If a store has been up to the limit, it will return error for successive request to prevent the store occupying too much token in dispatching level. Optional: Defaults to 0