Question

我正在开发一个使用logback进行日志记录的应用程序。我使用logback DBAppender将日志插入DB。

一切都很适合我，我能够插入日志并查看数据库。

我使用200个日志代码行进行了一些测试，并测量了这200个日志的时间消耗，并且在不使用DBAppender的情况下得到了10毫秒。当我添加DBAppender时，我得到了大约2700毫秒。

我尝试使用ch.qos.logback.classic.AsyncAppender但没有运气让它异步工作。我总是将0结果插入到我的数据库中。

我的配置如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true"> 

 <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> 
    <!-- encoders are  by default assigned the type
         ch.qos.logback.classic.encoder.PatternLayoutEncoder -->
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
  </appender>  

    <appender name="DBAppPostgreSQL" class="ch.qos.logback.classic.db.DBAppender">
        <connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
            <dataSource class="com.mchange.v2.c3p0.ComboPooledDataSource">
                  <driverClass>org.postgresql.Driver</driverClass>
                  <url>jdbc:postgresql://127.0.0.1:5678/DB</url>
                  <user>YYYYY</user>
                  <password>XXX</password>
            </dataSource>
        </connectionSource>
        <sqlDialect class="ch.qos.logback.core.db.dialect.PostgreSQLDialect" />
        <insertHeaders>true</insertHeaders>
</appender>

    <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
            <appender-ref ref="DBAppPostgreSQL" />
            <includeCallerData>true</includeCallerData>
    </appender>

  <root level="debug">
      <appender-ref ref="ASYNC" />
      <appender-ref ref="STDOUT" />
  </root>
</configuration>

我的配置有什么缺失吗？或者还有其他方法可以让它更快地将日志插入数据库吗？

请注意，我正在使用postgreSQL

谢谢，

编辑：

我在slf4j 1.7.5上使用logback 1.0.11。我也在使用postgresql 8.0.325。

logback的内部状态为：

10:52:09,693 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
10:52:09,693 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
10:52:09,693 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/D:/BOOM/BoomFinancial/BoomMonitoringTesting/bin/logback.xml]
10:52:09,759 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
10:52:09,761 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
10:52:09,771 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
10:52:09,800 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.classic.db.DBAppender]
10:52:09,803 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [DBAppPostgreSQL]
10:52:09,809 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@14:75 - no applicable action for [dataSource], current pattern is [[configuration][appender][connectionSource][dataSource]]
10:52:09,866 |-INFO in ch.qos.logback.core.db.dialect.DBUtil@30e34726 - Could not call supportsGetGeneratedKeys method. This may be recoverable
10:52:09,866 |-INFO in ch.qos.logback.core.db.DriverManagerConnectionSource@195428dd - Driver name=PostgreSQL Native Driver
10:52:09,866 |-INFO in ch.qos.logback.core.db.DriverManagerConnectionSource@195428dd - Driver version=PostgreSQL 8.0 JDBC2 with NO SSL (build 325)
10:52:09,866 |-INFO in ch.qos.logback.core.db.DriverManagerConnectionSource@195428dd - supportsGetGeneratedKeys=false
10:52:09,867 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@21:77 - no applicable action for [sqlDialect], current pattern is [[configuration][appender][sqlDialect]]
10:52:09,868 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@22:21 - no applicable action for [insertHeaders], current pattern is [[configuration][appender][insertHeaders]]
10:52:09,870 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.classic.AsyncAppender]
10:52:09,872 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [ASYNC]
10:52:09,872 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [DBAppPostgreSQL] to ch.qos.logback.classic.AsyncAppender[ASYNC]
10:52:09,872 |-INFO in ch.qos.logback.classic.AsyncAppender[ASYNC] - Attaching appender named [DBAppPostgreSQL] to AsyncAppender.
10:52:09,874 |-INFO in ch.qos.logback.classic.AsyncAppender[ASYNC] - Setting discardingThreshold to 51
10:52:09,874 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to DEBUG
10:52:09,875 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [ASYNC] to Logger[ROOT]
10:52:09,875 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
10:52:09,875 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
10:52:09,876 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@23e0512a - Registering current configuration as safe fallback point

Answer 1

logback报告了一条错误消息：

0:52:09,809 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@14:75 - no applicable action for [dataSource], current pattern is [[configuration][appender][connectionSource][dataSource]]

这表示无法理解嵌套在其中的元素。以下是配置文件的相关部分：

<appender name="DBAppPostgreSQL" class="ch.qos.logback.classic.db.DBAppender">
  <!-- DriverManagerConnectionSource does not have a dataSource property -->
  <connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
    <dataSource class="com.mchange.v2.c3p0.ComboPooledDataSource">
      <driverClass>org.postgresql.Driver</driverClass>
      <url>jdbc:postgresql://127.0.0.1:5678/DB</url>
      <user>YYYYY</user>
      <password>XXX</password>
    </dataSource>
  </connectionSource>
  <sqlDialect class="ch.qos.logback.core.db.dialect.PostgreSQLDialect" />
  <insertHeaders>true</insertHeaders>
</appender>

ch.qos.logback.core.db.DriverManagerConnectionSource没有dataSource属性，而ch.qos.logback.core.db.DataSourceConnectionSource则属性<appender name="DBAppPostgreSQL" class="ch.qos.logback.classic.db.DBAppender">  <connectionSource class="ch.qos.logback.core.db.DataSourceConnectionSource"> <dataSource class="com.mchange.v2.c3p0.ComboPooledDataSource"> <driverClass>org.postgresql.Driver</driverClass> <url>jdbc:postgresql://127.0.0.1:5678/DB</url> <user>YYYYY</user> <password>XXX</password> </dataSource> </connectionSource> <sqlDialect class="ch.qos.logback.core.db.dialect.PostgreSQLDialect" /> <insertHeaders>true</insertHeaders> </appender>。您可能希望使用以下命令配置DBAppPostgreSQL：

{{1}}

Answer 2

感谢Ceki的回答。我不能评论它，所以我添加了一个新的答案： Ceki的答案还包含一个不正确的内容：元素“ url ”应替换为“ jdbcUrl ”。所以配置应如下所示：

<appender name="DBAppPostgreSQL" class="ch.qos.logback.classic.db.DBAppender">
  <!-- use DataSourceConnectionSource instead of DriverManagerConnectionSource -->
  <connectionSource class="ch.qos.logback.core.db.DataSourceConnectionSource">
    <dataSource class="com.mchange.v2.c3p0.ComboPooledDataSource">
      <driverClass>org.postgresql.Driver</driverClass>
      <jdbcUrl>jdbc:postgresql://127.0.0.1:5678/DB</jdbcUrl>
      <user>YYYYY</user>
      <password>XXX</password>
    </dataSource>
  </connectionSource>
  <sqlDialect class="ch.qos.logback.core.db.dialect.PostgreSQLDialect" />
  <insertHeaders>true</insertHeaders>
</appender>

具有logback的异步DBAppender

2 个答案: