【已解答】如何清理mysql缓存 SQLSTATE[HY000] [2002] Connection refus

SQLSTATE[HY000] [2002] Connection refused，网站出现这个错误，如何清理mysql缓存

您好，您这个是数据库连接被拒绝，不是MySQL缓存，如果你开启了查询缓存的话，可以在MySQL管理这里关闭

[client]
#password        = your_password
port                = 3306
socket                = /tmp/mysql.sock

[mysqld]
port                = 3306
socket                = /tmp/mysql.sock
datadir = /www/server/data
default_storage_engine = InnoDB
performance_schema_max_table_instances = 400
table_definition_cache = 400
skip-external-locking
key_buffer_size = 1024M
max_allowed_packet = 100G
table_open_cache = 4096
sort_buffer_size = 16M
net_buffer_length = 4K
read_buffer_size = 16M
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 256M
thread_cache_size = 512
query_cache_size = 0M
tmp_table_size = 512M
sql-mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

explicit_defaults_for_timestamp = true
skip-name-resolve = true
skip-grant-tables = true
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535

log-bin=mysql-bin
binlog_format=mixed
server-id = 1
expire_logs_days = 10
slow_query_log=1
slow-query-log-file=/www/server/data/mysql-slow.log
long_query_time=3
#log_queries_not_using_indexes=on


innodb_data_home_dir = /www/server/data
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /www/server/data
innodb_buffer_pool_size = 4096M
innodb_log_file_size = 2048M
innodb_log_buffer_size = 512M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50
innodb_max_dirty_pages_pct = 90
innodb_read_io_threads = 10
innodb_write_io_threads = 10

[mysqldump]
quick
max_allowed_packet = 500M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 1024M
sort_buffer_size = 16M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout
配置文件内容，mysql还是不能启动

我的性能调整那里是点不开的