There are three types of backup methods commonly used:1. Full backup: Completely back up all the data2. Incremental Backup: Refer to the contents of the previous backup3. Differential backup: Always use a full backup of one record point as a
The content originates from the people's post and Telecommunications press "Linux command Application big dictionary"tell 729 commands, 1935 examplesLearn about the Linux system's reference books, desk book, encountered the command or command not
After the project is configured, Apache,mysql and so on will generate a log, in order to facilitate management, it is at a certain interval of time to dump1.Apache logAdd the following two sentences to the configuration file:Customlog
Jstack the thread state in the Dump log fileIn the dump file, the interesting thread states are:
Deadlock,Deadlock (focus on)
In execution,Runnable
Waiting for resources,waiting on condition (focus)
Waiting to get the
Original link: http://www.cnblogs.com/zhengyun_ustc/archive/2013/01/06/dumpanalysis.htmlTurn to be a note ^_^Jstack the thread state in the Dump log fileIn the dump file, the interesting thread states are:
Deadlock,Deadlock (focus on)
Demand motivation: Solving OOM (Object out of Memory) problems and system tuning
1. How to generate Java heap dump
Java heap dump files are generated when there are too many objects in the JVM and the Java heap (Java heap) is depleted.
Demand motivation: Solving OOM (Object out of Memory) problems and system tuning
1. How to generate Java heap dump
Java heap dump files are generated when there are too many objects in the JVM and the Java heap (Java heap) is depleted.
The mysqldump client can be used to dump databases or collect databases for backup or transfer data to another SQL Server (not necessarily a MySQL Server ). Dump contains table Creation
The mysqldump client can be used to dump databases or collect
Linux kernel debugging methods
KDB: Only in the assembly code level for debugging;
The advantage is that two machines are not required for debugging.
GDB: When debugging a module, it lacks some vital features that can be used to view the operation
1. Why back up the database?
Backup is the most important and easy to ignore for databases. Unexpected events may cause serious losses.
The more important the data is, the more frequently the data changes, and the more frequently backup is
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