firestuff/markdown/2011-04-22-avoid-mysql-round-trips.md

100ms (e.g. cross-US) latency to your MySQL server? Running 100,000 statements? That's 3 hours of overhead before you even get to your statement runtime on the server. Quick hack:

mysql> delimiter |
mysql> select 1;
 -> select 2;
 -> |
+---+
| 1 |
+---+
| 1 |
+---+
1 row in set (0.00 sec)

+---+
| 2 |
+---+
| 2 |
+---+
1 row in set (0.00 sec)