perf(docker/mysql): 优化MySQL配置以提高性能和稳定性

调整连接数、超时时间和缓冲区大小以提升性能
添加InnoDB优化参数和慢查询日志配置
设置lower_case_table_names以解决大小写敏感问题

docker/mysql/my.cnf

@@ -6,21 +6,40 @@ init_connect='SET NAMES utf8mb4'
 
 
 # 连接设置
-max_connections=100
-wait_timeout=28800
-interactive_timeout=28800
+max_connections=500
+wait_timeout=300
+interactive_timeout=300
+max_connect_errors=1000
 
 # 缓冲区设置
-innodb_buffer_pool_size=256M
-key_buffer_size=64M
+innodb_buffer_pool_size=12G
+key_buffer_size=256M
+sort_buffer_size=4M
+read_buffer_size=4M
+read_rnd_buffer_size=8M
+join_buffer_size=4M
+
+# InnoDB 优化
+innodb_file_per_table=1
+innodb_flush_method=O_DIRECT
+innodb_flush_log_at_trx_commit=2
+innodb_io_capacity=1000
+innodb_io_capacity_max=2000
+innodb_buffer_pool_instances=8
+innodb_thread_concurrency=16
+innodb_purge_threads=4
 
 # 日志设置
 slow_query_log=1
 slow_query_log_file=/var/lib/mysql/slow.log
-long_query_time=2
+long_query_time=1
+log_queries_not_using_indexes=1
+log_slow_admin_statements=1
+log_slow_slave_statements=1
 
 # 其他设置
 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
+lower_case_table_names=1
 
 [client]
 default-character-set=utf8mb4