Switch to] log4cxx backup by time and size

 1. log files are generated at a certain time. The configuration file is as follows: 

# Set root logger level to Error and Its only appender to A1.

Log4j. rootlogger = error, R

 

# R is set to be a dailyrollingfileappender.

Log4j. appender. r = org. Apache. log4j. dailyrollingfileappender

Log4j. appender. R. File = backup. Log

Log4j. appender. R. datepattern = '. 'yyyy-mm-dd

Log4j. appender. R. layout = org. Apache. log4j. patternlayout

Log4j. appender. R. layout. conversionpattern = %-d {yyyy-mm-dd hh: mm: SS} [% C]-[% P] % m % N

 

The preceding configuration generates a backup file every day. The name of the backup file is backup. log.

The specific effect is as follows: the log information of the current day is recorded in the backup. log file, and the log of the previous day is recorded in the file named backup. log. yyyy-mm-dd.

Similarly, if you need to generate a file every month, you can modify the above Configuration:

Set Log4j. appender. R. datepattern = '. 'yyyy-mm-dd

Change Log4j. appender. R. datepattern = '. 'yyyy-mm

 

Cut logs by minute: log4j. appender. a1.datepattern = '. 'yyyy-mm-dd-hh-mm

 

Ii. Automatic Generation of new log files based on the log file size

The configuration file is as follows:

# Set root logger level to Error and Its only appender to A1.

Log4j. rootlogger = error, R

 

# R is set to be a rollingfileappender.

Log4j. appender. r = org. Apache. log4j. rollingfileappender

 

Log4j. appender. R. File = backup. Log

# Log4j. appender. R. maxfilesize = 100kb

 

# Keep one backup file

Log4j. appender. R. maxbackupindex = 1

Log4j. appender. R. layout = org. Apache. log4j. patternlayout

Log4j. appender. R. layout. conversionpattern = %-d {yyyy-mm-dd hh: mm: SS} [% C]-[% P] % m % N

 

Where:

# Log File Size

Log4j. appender. R. maxfilesize = 100kb

# Saving a backup file

Log4j. appender. R. maxbackupindex = 1

 1. log files are generated at a certain time. The configuration file is as follows: 

# Set root logger level to Error and Its only appender to A1.

Log4j. rootlogger = error, R

 

# R is set to be a dailyrollingfileappender.

Log4j. appender. r = org. Apache. log4j. dailyrollingfileappender

Log4j. appender. R. File = backup. Log

Log4j. appender. R. datepattern = '. 'yyyy-mm-dd

Log4j. appender. R. layout = org. Apache. log4j. patternlayout

Log4j. appender. R. layout. conversionpattern = %-d {yyyy-mm-dd hh: mm: SS} [% C]-[% P] % m % N

 

The preceding configuration generates a backup file every day. The name of the backup file is backup. log.

The specific effect is as follows: the log information of the current day is recorded in the backup. log file, and the log of the previous day is recorded in the file named backup. log. yyyy-mm-dd.

Similarly, if you need to generate a file every month, you can modify the above Configuration:

Set Log4j. appender. R. datepattern = '. 'yyyy-mm-dd

Change Log4j. appender. R. datepattern = '. 'yyyy-mm

 

Cut logs by minute: log4j. appender. a1.datepattern = '. 'yyyy-mm-dd-hh-mm

 

Ii. Automatic Generation of new log files based on the log file size

The configuration file is as follows:

# Set root logger level to Error and Its only appender to A1.

Log4j. rootlogger = error, R

 

# R is set to be a rollingfileappender.

Log4j. appender. r = org. Apache. log4j. rollingfileappender

 

Log4j. appender. R. File = backup. Log

# Log4j. appender. R. maxfilesize = 100kb

 

# Keep one backup file

Log4j. appender. R. maxbackupindex = 1

Log4j. appender. R. layout = org. Apache. log4j. patternlayout

Log4j. appender. R. layout. conversionpattern = %-d {yyyy-mm-dd hh: mm: SS} [% C]-[% P] % m % N

 

Where:

# Log File Size

Log4j. appender. R. maxfilesize = 100kb

# Saving a backup file

log4j. appender. R. maxbackupindex = 1