@邦wlb 什么数据库 什么版本

@扫地僧 
 
 你好，MySQL 5.7.34, Ubuntu 18.04.4 LTS, 腾讯云服务器4核4G内存，使用宝塔面板直接本地安装的MySQL。
 
 MySQL配置如下（缺省配置，没做特别设置）
 
 [mysqld]
 binlog_cache_size = 64K
 thread_stack = 256K
 join_buffer_size = 2048K
 query_cache_type = 1
 max_heap_table_size = 384M
 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 = 256M
 max_allowed_packet = 100G
 table_open_cache = 192
 sort_buffer_size = 768K
 net_buffer_length = 4K
 read_buffer_size = 768K
 read_rnd_buffer_size = 512K
 myisam_sort_buffer_size = 16M
 thread_cache_size = 96
 query_cache_size = 128M
 tmp_table_size = 384M
 sql-mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
 
 explicit_defaults_for_timestamp = true
 #skip-name-resolve
 max_connections = 1024
 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
 early-plugin-load = ""
 
 
 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 = 384M
 innodb_log_file_size = 128M
 innodb_log_buffer_size = 32M
 innodb_flush_log_at_trx_commit = 1
 innodb_lock_wait_timeout = 50
 innodb_max_dirty_pages_pct = 90
 innodb_read_io_threads = 4
 innodb_write_io_threads = 4
 
 [mysql]
 no-auto-rehash
 
 
 
 
 有时候导入几千条记录的excel到数据库表中时，可能会短时间占用大量数据库链接。
 
 另外，如果要修改 druid 默认的最大32条并发链接数，如何设置？