未更新完毕 [client] # pipe= # socket=MYSQL port=3306 [mysql] no-beep # default-character-set= # SERVER SECTION # ---------------------------------------------------------------------- # # The following options will be read by the MySQL Server. Make sure that # you have installed the server correctly (see above) so it reads this # file. # # server_type=3 [mysqld] # The next three options are mutually exclusive to SERVER_PORT below. # skip-networking # enable-named-pipe # shared-memory # shared-memory-base-name=MYSQL # The Pipe the MySQL Server will use # socket=MYSQL # The TCP/IP Port the MySQL Server will listen on # mysql端口 port=3306 # Path to the database root # 数据存放目录 datadir=C:/ProgramData/MySQL/MySQL Server 8.0Data # The default character set that will be used when a new schema or table is # created and no character set is defined # character-set-server= # The default authentication plugin to be used when connecting to the server # 认证插件，具体不太了解，默认即可，有懂的大佬请指正 default_authentication_plugin=caching_sha2_password # The default storage engine that will be used when create new tables when # 默认的表类型为INNODB default-storage-engine=INNODB # Set the SQL mode to strict # sql规则 sql-mode="STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION" # General and Slow logging. # 日志输出到文件中 = TABLE为输出到表中 log-output=FILE # general-log记录所有日志开启状态0为不开启1为开启 general-log=0 # 日志文件名 general_log_file="DESKTOP-T7UR8F0.log" # 慢查询日志 1开启0不开启 slow-query-log=1 # 日志文件 slow_query_log_file="DESKTOP-T7UR8F0-slow.log" # 慢查询时间 10秒 long_query_time=10 # Error Logging. # 错误日志 log-error="DESKTOP-T7UR8F0.err" # binlon日志文件 log-bin="DESKTOP-T7UR8F0-bin" # ***** Group Replication Related ***** # Specifies the server ID. For servers that are used in a replication topology, # you must specify a unique server ID for each replication server, in the # range from 1 to 2^32 − 1. “Unique” means that each ID must be different # from every other ID in use by any other source or replica. server-id=1 # ***** Group Replication Related ***** # The host name or IP address of the replica to be reported to the source # during replica registration. This value appears in the output of SHOW REPLICAS # on the source server. Leave the value unset if you do not want the replica to # register itself with the source. # report_host=0.0 # NOTE: Modify this value after Server initialization won't take effect. #lower_case_table_names = 1 表名存储在磁盘是小写的，但是比较的时候是不区分大小写 #lower_case_table_names=0 表名存储为给定的大小和比较是区分大小写的 #lower_case_table_names=2, 表名存储为给定的大小写但是比较的时候是小写的 lower_case_table_names=1 # Secure File Priv. secure-file-priv="C:/ProgramData/MySQL/MySQL Server 8.0/Uploads" # The maximum amount of concurrent sessions the MySQL server will # allow. One of these connections will be reserved for a user with # SUPER privileges to allow the administrator to login even if the # connection limit has been reached. #MySQL的最大连接数，增加该值增加mysqld 要求的文件描述符的数量。 #如果服务器的并发连接请求量比较大，建议调高此值，以增加并行连接数量， #当然这建立在机器能支撑的情况下，因为如果连接数越多，介于MySQL会为每个连接提供连接缓冲区， #就会开销越多的内存，所以要适当调整该值，不能盲目提高设值。 max_connections=151 # The number of open tables for all threads. Increasing this value # increases the number of file descriptors that mysqld requires. # Therefore you have to make sure to set the amount of open files # allowed to at least 4096 in the variable "open-files-limit" in # section [mysqld_safe] # 表文件描述符的缓存大小 # 默认值 2000 # 最小值 1 # 最大值 524288 table_open_cache=2000 # Maximum size for internal (in-memory) temporary tables. If a table # grows larger than this value, it is automatically converted to disk # based table This limitation is for a single table. There can be many # of them. # 临时表的内存缓存大小 tmp_table_size=18M # How many threads we should keep in a cache for reuse. When a client # disconnects, the client's threads are put in the cache if there aren't # more than thread_cache_size threads from before. This greatly reduces # the amount of thread creations needed if you have a lot of new # connections. (Normally this doesn't give a notable performance # improvement if you have a good thread implementation.) # 线程池缓存大小(当客户端断开连接后 将当前线程缓存起来 当在接到新的连接请求时快速响应 无需创建新的线程) thread_cache_size=10 #*** MyISAM Specific options # The maximum size of the temporary file MySQL is allowed to use while # recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE. # If the file-size would be bigger than this, the index will be created # through the key cache (which is slower). myisam_max_sort_file_size=100G # The size of the buffer that is allocated when sorting MyISAM indexes # during a REPAIR TABLE or when creating indexes with CREATE INDEX # or ALTER TABLE. myisam_sort_buffer_size=27M # Size of the Key Buffer, used to cache index blocks for MyISAM tables. # Do not set it larger than 30% of your available memory, as some memory # is also required by the OS to cache rows. Even if you're not using # MyISAM tables, you should still set it to 8-64M as it will also be # used for internal temporary disk tables. key_buffer_size=8M # Size of the buffer used for doing full table scans of MyISAM tables. # Allocated per thread, if a full scan is needed. read_buffer_size=54K read_rnd_buffer_size=256K #*** INNODB Specific options *** # innodb_data_home_dir= # Use this option if you have a MySQL server with InnoDB support enabled # but you do not plan to use it. This will save memory and disk space # and speed up some things. # skip-innodb # If set to 1, InnoDB will flush (fsync) the transaction logs to the # disk at each commit, which offers full ACID behavior. If you are # willing to compromise this safety, and you are running small # transactions, you may set this to 0 or 2 to reduce disk I/O to the # logs. Value 0 means that the log is only written to the log file and # the log file flushed to disk approximately once per second. Value 2 # means the log is written to the log file at each commit, but the log # file is only flushed to disk approximately once per second. innodb_flush_log_at_trx_commit=1 # The size of the buffer InnoDB uses for buffering log data. As soon as # it is full, InnoDB will have to flush it to disk. As it is flushed # once per second anyway, it does not make sense to have it very large # (even with long transactions). innodb_log_buffer_size=1M # InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and # row data. The bigger you set this the less disk I/O is needed to # access data in tables. On a dedicated database server you may set this # parameter up to 80% of the machine physical memory size. Do not set it # too large, though, because competition of the physical memory may # cause paging in the operating system. Note that on 32bit systems you # might be limited to 2-3.5G of user level memory per process, so do not # set it too high. innodb_buffer_pool_size=8M # Size of each log file in a log group. You should set the combined size # of log files to about 25%-100% of your buffer pool size to avoid # unneeded buffer pool flush activity on log file overwrite. However, # note that a larger logfile size will increase the time needed for the # recovery process. innodb_log_file_size=48M # Number of threads allowed inside the InnoDB kernel. The optimal value # depends highly on the application, hardware as well as the OS # scheduler properties. A too high value may lead to thread thrashing. innodb_thread_concurrency=9 # The increment size (in MB) for extending the size of an auto-extend InnoDB system tablespace file when it becomes full. innodb_autoextend_increment=64 # The number of regions that the InnoDB buffer pool is divided into. # For systems with buffer pools in the multi-gigabyte range, dividing the buffer pool into separate instances can improve concurrency, # by reducing contention as different threads read and write to cached pages. innodb_buffer_pool_instances=8 # Determines the number of threads that can enter InnoDB concurrently. innodb_concurrency_tickets=5000 # Specifies how long in milliseconds (ms) a block inserted into the old sublist must stay there after its first access before # it can be moved to the new sublist. innodb_old_blocks_time=1000 # It specifies the maximum number of .ibd files that MySQL can keep open at one time. The minimum value is 10. innodb_open_files=300 # When this variable is enabled, InnoDB updates statistics during metadata statements. innodb_stats_on_metadata=0 # When innodb_file_per_table is enabled (the default in 5.6.6 and higher), InnoDB stores the data and indexes for each newly created table # in a separate .ibd file, rather than in the system tablespace. innodb_file_per_table=1 # Use the following list of values: 0 for crc32, 1 for strict_crc32, 2 for innodb, 3 for strict_innodb, 4 for none, 5 for strict_none. innodb_checksum_algorithm=0 # The number of outstanding connection requests MySQL can have. # This option is useful when the main MySQL thread gets many connection requests in a very short time. # It then takes some time (although very little) for the main thread to check the connection and start a new thread. # The back_log value indicates how many requests can be stacked during this short time before MySQL momentarily # stops answering new requests. # You need to increase this only if you expect a large number of connections in a short period of time. back_log=80 # If this is set to a nonzero value, all tables are closed every flush_time seconds to free up resources and # synchronize unflushed data to disk. # This option is best used only on systems with minimal resources. flush_time=0 # The minimum size of the buffer that is used for plain index scans, range index scans, and joins that do not use # indexes and thus perform full table scans. join_buffer_size=256K # The maximum size of one packet or any generated or intermediate string, or any parameter sent by the # mysql_stmt_send_long_data() C API function. max_allowed_packet=4M # If more than this many successive connection requests from a host are interrupted without a successful connection, # the server blocks that host from performing further connections. max_connect_errors=100 # Changes the number of file descriptors available to mysqld. # You should try increasing the value of this option if mysqld gives you the error "Too many open files". open_files_limit=4161 # If you see many sort_merge_passes per second in SHOW GLOBAL STATUS output, you can consider increasing the # sort_buffer_size value to speed up ORDER BY or GROUP BY operations that cannot be improved with query optimization # or improved indexing. sort_buffer_size=256K # The number of table definitions (from .frm files) that can be stored in the definition cache. # If you use a large number of tables, you can create a large table definition cache to speed up opening of tables. # The table definition cache takes less space and does not use file descriptors, unlike the normal table cache. # The minimum and default values are both 400. table_definition_cache=1400 # Specify the maximum size of a row-based binary log event, in bytes. # Rows are grouped into events smaller than this size if possible. The value should be a multiple of 256. binlog_row_event_max_size=8K # If the value of this variable is greater than 0, a replica synchronizes its master.info file to disk. # If the value of this variable is greater than 0, the MySQL server synchronizes its relay log to disk. # (using fdatasync()) after every sync_relay_log writes to the relay log. sync_relay_log=10000 # If the value of this variable is greater than 0, a replica synchronizes its relay-log.info file to disk. # (using fdatasync()) after every sync_relay_log_info transactions. sync_relay_log_info=10000 # Load mysql plugins at start."plugin_x ; plugin_y". # plugin_load # The TCP/IP Port the MySQL Server X Protocol will listen on. loose_mysqlx_port=33060
