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NAME W STATUS CHECK ACT BCK QCUR QMAX SCUR SMAX SLIM STOT >>> mysql-front FRONTEND 0 OPEN 0 0 0 0 0 0 75 0 >>> mysql-back...
...hatop and pressing F10. Via socat it works this way: # disable server / echo "disable server mysql-back/mysql1" | socat unix-connect:/var/run/haproxy/haproxy.stat stdio Now no new connections will be opened...
mysqlperformanceblog.com
When MySQL refuses to use your index, there's a number of things that you may be doing wrong. One of them might be conditions with improper data types.
...assume you have a users table with an email field (varchar) which is indexed. MySQL will use the index when your query is well-formed: mysql> EXPLAIN SELECT * FROM users...