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Start at 70% of total RAM for dedicated server, else 10%.</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># innodb_buffer_pool_size = 128M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e">#</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># Remove leading # to turn on a very important data integrity option: logging</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># changes to the binary log between backups.</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># log_bin</span> </span></span><span style="display:flex;"><span><span style="color:#75715e">#</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># Remove leading # to set options mainly useful for reporting servers.</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># The server defaults are faster for transactions and fast SELECTs.</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># Adjust sizes as needed, experiment to find the optimal values.</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># join_buffer_size = 128M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># sort_buffer_size = 2M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># read_rnd_buffer_size = 2M</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">port</span><span style="color:#f92672">=</span><span style="color:#e6db74">3306</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">datadir</span><span style="color:#f92672">=</span><span style="color:#e6db74">/data/mysql</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">socket</span><span style="color:#f92672">=</span><span style="color:#e6db74">/data/mysql/mysql.sock</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">pid_file</span><span style="color:#f92672">=</span><span style="color:#e6db74">/data/mysql/mysqld.pid</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 服务端编码</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">character_set_server</span><span style="color:#f92672">=</span><span style="color:#e6db74">utf8mb4</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 服务端排序</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">collation_server</span><span style="color:#f92672">=</span><span style="color:#e6db74">utf8mb4_general_ci</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 强制使用 utf8mb4 编码集，忽略客户端设置</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">skip_character_set_client_handshake</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 日志输出到文件</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">log_output</span><span style="color:#f92672">=</span><span style="color:#e6db74">FILE</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 开启常规日志输出</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">general_log</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 常规日志输出文件位置</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">general_log_file</span><span style="color:#f92672">=</span><span style="color:#e6db74">/var/log/mysql/mysqld.log</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 错误日志位置</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">log_error</span><span style="color:#f92672">=</span><span style="color:#e6db74">/var/log/mysql/mysqld-error.log</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 记录慢查询</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">slow_query_log</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 慢查询时间(大于 1s 被视为慢查询)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">long_query_time</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 慢查询日志文件位置</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">slow_query_log_file</span><span style="color:#f92672">=</span><span style="color:#e6db74">/var/log/mysql/mysqld-slow.log</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 临时文件位置</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">tmpdir</span><span style="color:#f92672">=</span><span style="color:#e6db74">/data/mysql_tmp</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 线程池缓存(refs https://my.oschina.net/realfighter/blog/363853)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">thread_cache_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">30</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># The number of open tables for all threads.(refs https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_table_open_cache)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">table_open_cache</span><span style="color:#f92672">=</span><span style="color:#e6db74">16384</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 文件描述符(此处修改不生效，请修改 systemd service 配置)</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://www.percona.com/blog/2017/10/12/open_files_limit-mystery/</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://www.cnblogs.com/wxxjianchi/p/10370419.html</span> </span></span><span style="display:flex;"><span><span style="color:#75715e">#open_files_limit=65535</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 表定义缓存(5.7 以后自动调整)</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://dev.mysql.com/doc/refman/5.6/en/server-system-variables.html#sysvar_table_definition_cache</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs http://mysql.taobao.org/monthly/2015/08/10/</span> </span></span><span style="display:flex;"><span><span style="color:#75715e">#table_definition_cache=16384</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">sort_buffer_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">1M</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">join_buffer_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">1M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># MyiSAM 引擎专用(内部临时磁盘表可能会用)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">read_buffer_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">1M</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">read_rnd_buffer_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">1M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># MyiSAM 引擎专用(内部临时磁盘表可能会用)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">key_buffer_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">32M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># MyiSAM 引擎专用(内部临时磁盘表可能会用)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">bulk_insert_buffer_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">16M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># myisam_sort_buffer_size 与 sort_buffer_size 区别请参考(https://stackoverflow.com/questions/7871027/myisam-sort-buffer-size-vs-sort-buffer-size)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">myisam_sort_buffer_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">64M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 内部内存临时表大小</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">tmp_table_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">32M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 用户创建的 MEMORY 表最大大小(tmp_table_size 受此值影响)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">max_heap_table_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">32M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 开启查询缓存</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">query_cache_type</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 查询缓存大小</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">query_cache_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">32M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># sql mode</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">sql_mode</span><span style="color:#f92672">=</span><span style="color:#e6db74">&#39;STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION&#39;</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#75715e">########### Network ###########</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 最大连接数(该参数受到最大文件描述符影响，如果不生效请检查最大文件描述符设置)</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://stackoverflow.com/questions/39976756/the-max-connections-in-mysql-5-7</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">max_connections</span><span style="color:#f92672">=</span><span style="color:#e6db74">1500</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># mysql 堆栈内暂存的链接数量</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 当短时间内链接数量超过 max_connections 时，部分链接会存储在堆栈内，存储数量受此参数控制</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">back_log</span><span style="color:#f92672">=</span><span style="color:#e6db74">256</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 最大链接错误，针对于 client 主机，超过此数量的链接错误将会导致 mysql server 针对此主机执行锁定(禁止链接 ERROR 1129 )</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 此错误计数仅在 mysql 链接握手失败才会计算，一般出现问题时都是网络故障</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://www.cnblogs.com/kerrycode/p/8405862.html</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">max_connect_errors</span><span style="color:#f92672">=</span><span style="color:#e6db74">100000</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># mysql server 允许的最大数据包大小</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">max_allowed_packet</span><span style="color:#f92672">=</span><span style="color:#e6db74">64M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 交互式客户端链接超时(30分钟自动断开)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">interactive_timeout</span><span style="color:#f92672">=</span><span style="color:#e6db74">1800</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 非交互式链接超时时间(10分钟)</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 如果客户端有连接池，则需要协商此参数(refs https://database.51cto.com/art/201909/603519.htm)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">wait_timeout</span><span style="color:#f92672">=</span><span style="color:#e6db74">600</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 跳过外部文件系统锁定</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># If you run multiple servers that use the same database directory (not recommended),</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># each server must have external locking enabled.</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://dev.mysql.com/doc/refman/5.7/en/external-locking.html</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">skip_external_locking</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 跳过链接的域名解析(开启此选项后 mysql 用户授权的 host 方式失效)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">skip_name_resolve</span><span style="color:#f92672">=</span><span style="color:#e6db74">0</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 禁用主机名缓存，每次都会走 DNS</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">host_cache_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">0</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">ini</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#75715e">########### REPL ###########</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 开启 binlog</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">log_bin</span><span style="color:#f92672">=</span><span style="color:#e6db74">mysql-bin</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 作为从库时，同步信息依然写入 binlog，方便此从库再作为其他从库的主库</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">log_slave_updates</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># server id，默认为 ipv4 地址去除第一段</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># eg: 172.16.10.11 =&gt; 161011</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">server_id</span><span style="color:#f92672">=</span><span style="color:#e6db74">161011</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 每次次事务 binlog 刷新到磁盘</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs http://liyangliang.me/posts/2014/03/innodb_flush_log_at_trx_commit-and-sync_binlog/</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">sync_binlog</span><span style="color:#f92672">=</span><span style="color:#e6db74">100</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># binlog 格式(refs https://zhuanlan.zhihu.com/p/33504555)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">binlog_format</span><span style="color:#f92672">=</span><span style="color:#e6db74">row</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># binlog 自动清理时间</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">expire_logs_days</span><span style="color:#f92672">=</span><span style="color:#e6db74">10</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 开启 relay-log，一般作为 slave 时开启</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">relay_log</span><span style="color:#f92672">=</span><span style="color:#e6db74">mysql-replay</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 主从复制时跳过 test 库</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">replicate_ignore_db</span><span style="color:#f92672">=</span><span style="color:#e6db74">test</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 每个 session binlog 缓存</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">binlog_cache_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">4M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># binlog 滚动大小</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">max_binlog_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">1024M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># GTID 相关(refs https://keithlan.github.io/2016/06/23/gtid/)</span> </span></span><span style="display:flex;"><span><span style="color:#75715e">#gtid_mode=1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e">#enforce_gtid_consistency=1</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#75715e">########### InnoDB ###########</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 永久表默认存储引擎</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">default_storage_engine</span><span style="color:#f92672">=</span><span style="color:#e6db74">InnoDB</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 系统表空间数据文件大小(初始化为 1G，并且自动增长)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_data_file_path</span><span style="color:#f92672">=</span><span style="color:#e6db74">ibdata1:1G:autoextend</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 缓存池大小</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># innodb_buffer_pool_size 必须等于 innodb_buffer_pool_chunk_size*innodb_buffer_pool_instances，或者是其整数倍</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://dev.mysql.com/doc/refman/5.7/en/innodb-buffer-pool-resize.html</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://zhuanlan.zhihu.com/p/60089484</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_buffer_pool_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">7680M</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_buffer_pool_instances</span><span style="color:#f92672">=</span><span style="color:#e6db74">10</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_buffer_pool_chunk_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">128M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 强制恢复(refs https://www.askmaclean.com/archives/mysql-innodb-innodb_force_recovery.html)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_force_recovery</span><span style="color:#f92672">=</span><span style="color:#e6db74">0</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB buffer 预热(refs http://www.dbhelp.net/2017/01/12/mysql-innodb-buffer-pool-warmup.html)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_buffer_pool_dump_at_shutdown</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_buffer_pool_load_at_startup</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 日志组中的日志文件数</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_log_files_in_group</span><span style="color:#f92672">=</span><span style="color:#e6db74">2</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB redo 日志大小</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://www.percona.com/blog/2017/10/18/chose-mysql-innodb_log_file_size/</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_log_file_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">256MB</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 缓存还未提交的事务的缓冲区大小</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_log_buffer_size</span><span style="color:#f92672">=</span><span style="color:#e6db74">16M</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 在事务提交后的日志写入频率</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs http://liyangliang.me/posts/2014/03/innodb_flush_log_at_trx_commit-and-sync_binlog/</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_flush_log_at_trx_commit</span><span style="color:#f92672">=</span><span style="color:#e6db74">2</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB DML 操作行级锁等待时间</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 超时返回 ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://ningyu1.github.io/site/post/75-mysql-lock-wait-timeout-exceeded/</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_lock_wait_timeout</span><span style="color:#f92672">=</span><span style="color:#e6db74">30</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 行级锁超时是否回滚整个事务，默认为 OFF 仅回滚上一条语句</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 此时应用程序可以接受到错误后选择是否继续提交事务(并没有违反 ACID 原子性)</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://www.cnblogs.com/hustcat/archive/2012/11/18/2775487.html</span> </span></span><span style="display:flex;"><span><span style="color:#75715e">#innodb_rollback_on_timeout=ON</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 数据写入磁盘的方式，具体见博客文章</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://www.cnblogs.com/gomysql/p/3595806.html</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_flush_method</span><span style="color:#f92672">=</span><span style="color:#e6db74">O_DIRECT</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 缓冲池脏页刷新百分比</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://dbarobin.com/2015/08/29/mysql-optimization-under-ssd</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_max_dirty_pages_pct</span><span style="color:#f92672">=</span><span style="color:#e6db74">50</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 每秒执行的写IO量</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://www.centos.bz/2016/11/mysql-performance-tuning-15-config-item/#10.INNODB_IO_CAPACITY,%20INNODB_IO_CAPACITY_MAX</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_io_capacity</span><span style="color:#f92672">=</span><span style="color:#e6db74">500</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_io_capacity_max</span><span style="color:#f92672">=</span><span style="color:#e6db74">1000</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 请求并发 InnoDB 线程数</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://www.cnblogs.com/xinysu/p/6439715.html#_lab2_1_0</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_thread_concurrency</span><span style="color:#f92672">=</span><span style="color:#e6db74">60</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 再使用多个 InnoDB 表空间时，允许打开的最大 &#34;.ibd&#34; 文件个数，不设置默认 300，</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 并且取与 table_open_cache 相比较大的一个，此选项独立于 open_files_limit</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># refs https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_open_files</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_open_files</span><span style="color:#f92672">=</span><span style="color:#e6db74">65535</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 每个 InnoDB 表都存储在独立的表空间(.ibd)中</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_file_per_table</span><span style="color:#f92672">=</span><span style="color:#e6db74">1</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 事务级别(可重复读，会出幻读)</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">transaction_isolation</span><span style="color:#f92672">=</span><span style="color:#e6db74">REPEATABLE-READ</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># 是否在搜索和索引扫描中使用间隙锁(gap locking)，不建议使用未来将删除</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_locks_unsafe_for_binlog</span><span style="color:#f92672">=</span><span style="color:#e6db74">0</span> </span></span><span style="display:flex;"><span><span style="color:#75715e"># InnoDB 后台清理线程数，更大的值有助于 DML 执行性能，&gt;= 5.7.8 默认为 4</span> </span></span><span style="display:flex;"><span><span style="color:#a6e22e">innodb_purge_threads</span><span style="color:#f92672">=</span><span style="color:#e6db74">4</span> </span></span></code></pre></div>https://5b54be02.linzeyan.pages.dev/zh-tw/posts/2020/20200120-go-mysql-elasticsearch/Mon, 20 Jan 2020 09:18:00 +0800https://5b54be02.linzeyan.pages.dev/zh-tw/posts/2020/20200120-go-mysql-elasticsearch/<ul> <li><a href="https://github.com/go-mysql-org/go-mysql-elasticsearch" target="_blank" rel="noopener">go-mysql-elasticsearch</a></li> </ul> <div class="pdf-viewer" data-url="./go-mysql-elasticsearch-benchmarking.pdf" data-hide-paginator="false" data-hide-loader="false" data-page-num="1" > <div class="paginator"> <div class="page-number-indicator"> <span>Page: <span class="page-num"></span> / <span class="page-count"></span></span> </div> <div class="next-prev-btn"> <button class="prev btn btn-sm btn-info">Previous</button> <button class="next btn btn-sm btn-info">Next</button> </div> </div> <div class="embed-pdf-container"> <div 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