import org.springframework.core.convert.converter.Converter;

import org.springframework.stereotype.Component;

@Component

public class FlexibleDateTimeConverter implements Converter {

@Over...

https://memcached.org/

memcached:不支持持久化

linux安装memcached:

1.yum安装

yum search memcached|grep ^memcached

2.源码安装

a.安装依赖: yum install -y gcc gcc-c++ automake autoconf make cmake libevent-devel.x86_64

b.下载源码: wge...

@echooff

setlocal

rem 设置日志文件目录

set “log_dir=C:\path\to\your\logs”

rem 设置保留的天数

set “days_to_keep=7”

rem 计算要删除的日期

for /f “tokens=1-3 delims= “ %%a in (‘wmic os get localdatetime ^| find “.”‘) do (

set year=%%a

s...

kettle pdi日志级别修改

✅kettle-8.2\data-integration\classes

❌data-integration\system\osgi\log4j.xml

日志定时删除

@echooff

setlocal

rem 设置日志文件目录

set “log_dir=D:\kettle-8.2\data-integration\logs”

rem 设置保留的天数

set “days_to_ke...

https://blog.csdn.net/weixin_45565886/article/details/128897346?ops_request_misc=&request_id=&biz_id=102&utm_term=xxl-job&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default...

https://www.bilibili.com/video/BV19k4y1k7o9/?spm_id_from=333.337.search-card.all.click&vd_source=fd8128ae42b35905c9fc821432f9a40e

案例

https://www.bilibili.com/video/BV19k4y1k7o9?spm_id_from=333.788.video...

CREATE TABLE orders (

order_id INT NOT NULL AUTO_INCREMENT,

customer_id INT NOT NULL,

order_date DATE NOT NULL,

total_amount DECIMAL(10, 2),

PRIMARY KEY (order_id, order_date)

)

PARTITION BY RANGE (YEAR(orde...

缓冲池:

innodb_buffer_pool_size

innodb_buffer_pool_instances

innodb_log_buffer_size

innodb_log_file_size

临时表:

tmp_table_size

max_heap_table_size

磁盘临时表

innodb_tmpdir

innodb_tmp_tablespace

缓存刷新:

innodb_flush_log_at_tr...

java -jar myapp.jar arg1 arg2 arg3

java -Xmx512m -jar myapp.jar a b c

java -jar myapp.jar –port=8080 –env=prod