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Update custom_mysql_config.cnf

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科技lion 2025-04-28 18:21:03 +08:00 • committed by GitHub
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custom_mysql_config.cnf
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@ -6,33 +6,39 @@ thread_cache_size = 512
interactive_timeout = 30
wait_timeout = 30
# 查询缓存（MySQL8废除Query Cache，不配置）
# no query_cache_size or query_cache_type needed
# InnoDB设置
innodb_buffer_pool_size = 2048M
innodb_buffer_pool_instances = 2
innodb_log_buffer_size = 16M
innodb_redo_log_capacity = 64M
innodb_buffer_pool_size = 4096M # ⭐如果内存允许，给到一半RAM，数据库读性能暴涨
innodb_buffer_pool_instances = 4 # ⭐分片更细（>2G建议4-8分片）
innodb_log_buffer_size = 32M # ⭐更大事务写更稳
innodb_redo_log_capacity = 128M # ⭐防止大事务日志爆满
innodb_lock_wait_timeout = 30
innodb_file_per_table = 1
innodb_flush_log_at_trx_commit = 1
innodb_io_capacity = 1000
innodb_io_capacity_max = 2000
innodb_flush_log_at_trx_commit = 1 # ⭐坚持ACID，不放松一致性
innodb_io_capacity = 2000 # ⭐如果是NVMe磁盘可以调高（>SSD）
innodb_io_capacity_max = 4000
# 缓存和限制
table_open_cache = 2000
open_files_limit = 4000
tmp_table_size = 16M
max_heap_table_size = 16M
max_allowed_packet = 16M
# 缓存和表限制
table_open_cache = 4000 # ⭐动态表多的网站，加大打开表缓存
open_files_limit = 65535 # ⭐极限设置（注意宿主机ulimit）
tmp_table_size = 64M # ⭐调大，减少临时表落磁盘
max_heap_table_size = 64M # ⭐配合tmp_table_size，一起调大
max_allowed_packet = 64M # ⭐适配大SQL（比如大BLOB字段）
# 缓冲区大小
sort_buffer_size = 4M
sort_buffer_size = 8M # ⭐适配中大型ORDER BY场景
read_buffer_size = 2M
join_buffer_size = 2M
join_buffer_size = 4M # ⭐稍微放大Join场景效率更高
# 日志管理
log_error_verbosity = 3 # ⭐详细日志，便于追查慢问题
slow_query_log = 1 # ⭐打开慢查询日志
slow_query_log_file = /var/log/mysql/slow.log
long_query_time = 1 # ⭐超过1秒算慢查询
log_queries_not_using_indexes = 1 # ⭐记录无索引扫描
# 其他
sql_mode=NO_ENGINE_SUBSTITUTION
# --------------------------
sql_mode=STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION
performance_schema=ON # ⭐生产环境推荐打开，监控分析好用