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Apache Ignite Overview Apache Ignite is a distributed database for high‑performance applications with in‑memory speed. Important feature: - Mutil-tier 阅读全文
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做个备忘录:mvn install:install-file -Dfile=jar包的位置 -DgroupId=上面的groupId -DartifactId=定义的artifactId -Dversion=定义的version -Dpackaging=jar 阅读全文
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import java.util.concurrent.CountDownLatch; /** * @Author pipi * @Date 2018/10/15 13:56 **/ public class ParallelComputing { private int[] nums; private String[] info; private CountDo... 阅读全文
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4.0.0 com.pp xxxxxxxxxxxx 1.0-SNAPSHOT UTF-8 UTF-8 UTF-8 1.8 1.8 ... 阅读全文
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在开发和测试环境中,很容易混淆如何获取不同位置的配置文件。为了避免重复造轮子,在此记录一下自己的解决方案: 可以提出如下设想: 1、在开发环境下,读取resources下的config.properties文件 2、在生产环境下,读取jar文件同级目录下的config.properties文件,如果 阅读全文
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前段时间,总监提出将数据库中的数据通过接口发送给客户方。需要将Java程序注册为Windows系统服务,定时传送数据。总监提出用.NET写一个系统服务,将数据传送给客户是个不错的解决办法,出于对.NET了解甚少的无奈,没有选择这个解决方案。费了九牛二虎之力,终于找到了如何将Java程序注册为Wind 阅读全文
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The funciton of filter: filter the resouce and it's one of the Serlvet technology. When the user access to the resource, the filter will make some pro 阅读全文
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DBUtils framework: Constructor: QueryRunner(); QueryRunner(DataSource dataSource); Method: batch: batch(Connection conn, String sql, Object[][] params 阅读全文
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Connection Pool: create many connection objects in advance, and put the connection into the cache(list). The client will get the connection from the c 阅读全文
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Transaction: a bunch of operation in logic, the unit which consists the operation will works all or breaks down all. Every operation of MySQL server i 阅读全文