文件夹技术简单介绍    1(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fgubaojian.blog.163.com%2Fblog%2Fstatic%2F1661799082012101439591%2F%23_Toc340668340)一、JSONRPC协议描写

 !(https://img2020.cnblogs.com/blog/298108/202006/29810820200622192429584492353414.png) 最近做的项目，有个需求(从ElasticSearch取数据，业务运算后），每次要向MySQL插入1300万条数据左右。最初用MySQL的executemany()一次插入

Hashes是由字段和对应值组成的maps对象，字段和值都是String类型。Hashes非常适合存储对象（比如用户的姓名，年龄等字段）!(https://img2018.cnblogs.com/blog/581445/201908/58144520190808085154492238468204.png)每个hash可以存储232 

在Java的内存分配中，总共3种常量池：转发链接：https://blog.csdn.net/zm13007310400/article/details/77534349(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fblog.csdn.net%2Fzm13007310400%2

DubboAdmin管理控制台在dubbo发布包里，有个admin项目，!QQ鎴浘20180225162654.jpg(http://blog.java1234.com/static/userImages/20180225/1519566420480098025.jpg)我们可以把这个项目打成war包然后发布到tomcat运行；这

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本文转自：http://cowboybebop.iteye.com/blog/1035550(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fcowboybebop.iteye.com%2Fblog%2F1035550)，仅做稍微整理，转载请注明出处。1\.IDEA内存优化

空搜索搜索API的最基础的形式是没有指定任何查询的空搜索，它简单地返回集群中所有索引下的所有文档，如下命令：GET/_search返回如下结果：!image(https://images2018.cnblogs.com/blog/311549/201805/3115492018051117575885014905