下面这个配置在现网服务器上跑了两年了，里面多项参数都有调整过，这个算是最终的一个配置，这个配置不一定适合每种项目，仅供参考。
如果MySQL出现异常：Out of memory
需要修改这几个参数：
sort_buffer_size
read_buffer_size
read_rnd_buffer_size
join_buffer_size
max_connections
具体修改方式：http://aigo.iteye.com/blog/2157766
注意：以下配置的服务器硬件是：8核16G内存
[client]
port=3306
[mysql]
default-character-set=utf8
[mysqld]
port=3306
basedir=D:/mysql-5.6.21-winx64
datadir=D:/mysql-5.6.21-winx64/data
character-set-server=utf8
default-storage-engine=INNODB
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
max_connections=300
query_cache_size=186M
table_open_cache=1520
tmp_table_size=67M
thread_cache_size=38
myisam_max_sort_file_size=100G
myisam_sort_buffer_size=67M
key_buffer_size=290M
read_buffer_size = 1M
read_rnd_buffer_size = 8M
sort_buffer_size = 1M
innodb_additional_mem_pool_size=80M
innodb_flush_log_at_trx_commit=0
innodb_log_buffer_size=8M
innodb_buffer_pool_size=2G
innodb_log_file_size=1024M
innodb_thread_concurrency=18
innodb_support_xa = 1
innodb_file_per_table = 1
innodb_file_format = Barracuda
#interactive_timeout = 2147482
#wait_timeout = 2147482
interactive_timeout = 86400
wait_timeout = 86400
max_allowed_packet = 1G
# binlog
log_bin = D:/mysql-5.6.21-winx64/log/binlog/mysql-bin.log
log_bin_index = D:/mysql-5.6.21-winx64/log/binlog/mysql-bin.index
log_error = D:/mysql-5.6.21-winx64/log/mysql-error.log
sync_binlog = 1
expire_logs_days = 7
binlog_format = MIXED
[mysqldump]
max_allowed_packet = 1G