[logback-user] Logback configuration

Wed Apr 6 18:06:21 CEST 2011

Thanks Raman. 

I read somewhere that maxHistory depends on the roll-over type. So if I 
have something like this
<fileNamePattern>test.log.%d{yyyy-MM-dd}.%i</fileNamePattern>
 <maxHistory>10</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy 
class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>10MB</maxFileSize>
 </timeBasedFileNamingAndTriggeringPolicy>

which means daily roll-over and maxHistory signifies that it will keep it 
for 10 days. So that is where I'm facing a problem, as putting a number in 
maxHistory signifies the number of days it will keep the history for and 
not the maximum number for files per day. 

I also have a case like the following

<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <fileNamePattern>test.log.%d{yyyy-MM}.%i</fileNamePattern>
        <maxHistory>1</maxHistory>
        <timeBasedFileNamingAndTriggeringPolicy 
class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                        <maxFileSize>10MB</maxFileSize>
        </timeBasedFileNamingAndTriggeringPolicy>
 </rollingPolicy>

When mentioning the value 1 in maxHistory I assume it means saving it for 
a month. So its going to save all test.log.2011-03.0, 
test.log.2011-03.1,test.log.2011-03.2,......... Once it reaches may all 
files for the month or 03 will be deleted and instead we will have those 
for 04. Correct me If I'm not thinking right?

"Raman, Kalyan" <Kalyan.Raman at morganstanley.com> 
Sent by: logback-user-bounces at qos.ch
04/06/2011 09:37 AM
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Re: [logback-user] Logback configuration

Hi Neha,
                The maxHistory denotes the number of history files that 
are maintained. So if you want a cap of the index to be say 10, configure 
the maxHistory to 10 like shown below, which results in the max index of 
the history files will be 10.
In your case it will be test.log.2011-04-06.10

Thanks,
Kalyan

From: logback-user-bounces at qos.ch [mailto:logback-user-bounces at qos.ch] On 
Behalf Of Neha Kothari
Sent: Wednesday, April 06, 2011 9:27 AM
To: logback users list
Subject: Re: [logback-user] Logback configuration

The max history is for setting the limit on the file size. I want to set a 
cap on the index i appended.

Clemens Siebler <clemens.siebler at googlemail.com> 
Sent by: logback-user-bounces at qos.ch 
04/06/2011 05:08 AM 

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Re: [logback-user] Logback configuration

Should be possible using the maxHistory parameter:

    <appender name="file" 
class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>test.log</File>
        <encoder>
            <pattern>... </pattern>
        </encoder>
        <rollingPolicy 
class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>test.log.%d{yyyy-MM-dd}.%i</fileNamePattern>
            <maxHistory>10</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy 
class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>10MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
    </appender>

On Tue, Apr 5, 2011 at 10:22 PM, Neha Kothari <neha.kothari at db.com> wrote: 

Hi have started to use logback for logging in java. I am using 
"TimeBasedRollingPolicy" rolling policy as I wanted dated logs. 

My file pattern looks like c:/spg-live.%d{yyyy-MM-dd}.%i.log 
Is there a way that I can put a maxIndex (i.e the maximum limit for i) 
using the same rolling policy? 

Thanks 

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