to manage, do not need to classify, nothing more than a few products spread out to the user to choose. As the product increases, the classification is involved. Because we have a lot of merchandise, we need to manage, first need to comb clear, clear to pipe, can not 1 billion commodity one tube, no meaning, "classification" method of change is the whole commodity system changes in the core.
Just start classification is very simple, called category, category is a pure classification, such as
Complex VOIP configuration 1. topology, center Zongbu # shrunBuildingconfiguration... Currentconfiguration: 2216 bytes! Version12.2servicetimestampsdebuguptimeservicetimestampsloguptimenoservicepassword-encryption! HostnameZongbu! En
Complex VOIP configuration 1. topology, center Zongbu # sh run Building configuration... Current configuration: 2216 bytes! Version 12.2 service timestamps debug uptime service timestamps log
Significance and Calculation Method of Mysql database QPS and TPS
The terms QPS and TPS are often mentioned in the monitoring of database performance. Next we will briefly share the meanings and calculation methods of QPS and TPS in the MySQL database.
1 TPS: the transaction volume per second. You can obtain the TPS value requested by the client application in the following way:
Questions = show global status like 'questions ';Uptime = show global
Server system load:
1. Use the uptime command to view the current load (1 minute, 5 minutes, 15 minutes average load) on Apple's Mac.# Uptime15: 43: 59up186days, 1 user, loadaverage: 0.01, 0.02, 0.00
"Load average" means the average load of the system within 1 minute, 5 minutes, and 15 minutes.
(1) Observe "15-minute system load" and use it as an indicator for normal computer operation.
(2) If the average load within 15 minutes (after the system load
mus T is reachable to initiate set "
}
(1) "_id": Name of "MYREPL" replica set(2) "members": [...] A list of servers in a replica set with at least two keys per server.(3) "_id": N Unique ID per server(4) "host": hostname This key specifies the server hostOr:
Config = {"_id": "Myrepl", "members": [{"_id": 0, "host": "Test02:10001"}, {"_id": 1, "host": "Test03:10
002 "}]} rs.initiate (config);
Rs.status ();
Myrepl:secondarygt; Rs.status (); {"Set": "Myrepl", "date": Isodate ("2014-02-
The Linux uptime command is primarily used to get the host running time and query the Linux system load and other information. The uptime command used to show only how long the system was running. Now, you can show how long the system has been running, and the display of the information is: now time, how long the system has been running, how many users are currently logged in, the system's average load in t
job_queue_processes=0 scope=memory; Thu Nov 14:40:33 2004ALTER SYSTEM SET Job_queue_processes=1 scope=memory; Thu Nov 14:40:40 2004ALTER SYSTEM SET job_queue_processes=10 scope=memory; Thu Nov 15:00:42 2004ALTER SYSTEM SET job_queue_processes=0 scope=memory; Thu Nov 15:01:36 2004ALTER SYSTEM SET job_queue_processes=15 scope=memory;
4. Try to restart the database
This has to be done at night.
Pmon started with pid=2dbw0 started with PID=3LGWR started and pid=4ckpt with started Pid=5smon wit
"uptime.py" [Noeol] 69L, 2311C"system/uptime.py" 69L, 2312C' Noeol ' is ' no end-of-line ', that is, ' no end of line Terminator 'use the cat-a command to see how the two files differ in that the last line has a newline characterCat-a uptime.pyif __name__ = = ' __main__ ': $Uptime = Uptime () $Print (uptime) $[Email protected]:~/hanhuakai/pro_07/git_0709/ssapi#C
Tags: Record OBA measure update unit PHP TAC vs jpgExcerpt: 51198571 When doing DB benchmarking, Qps,tps is a key metric for measuring database performance. This paper compares two kinds of calculation methods on the Internet. Let's take a look at the relevant concepts. Concept: Qps:queries per Second Query Volume/sec, is a server per second can be the corresponding number of queries, is a specific query server in the specified time the amount of queries processed by the measure of how much
This article describes some useful and common Linux or UNIX commands that are commonly used by Linux system administrators. Instead of a complete list, this article briefly lists the commands that come in handy when needed, starting with an example of how to use these commands.1.uptime commandIn Linux, the uptime command shows how long your system has been running and how many users are currently logged on,
One, monitoring server system load situation:1, use the uptime command to view the current load situation (1 minutes, 5 minutes, 15 minutes average load situation)# uptime15:43:59 up 186 days, 20:04, 1 user, load average:0.01, 0.02, 0.00Rule of thumb for system load: (detail reference: http://blog.csdn.net/skyline_loafer/article/details/26940539)(1) The main observation "15 minutes system load", it as the normal operation of the computer indicators.(2
-class, not flying Birds sub-class, The penguin should inherit from the flightless bird subclass.This is due to the principle of the substitution of the Richter scale, which makes the inheritance reuse possible, only if the subclass can replace the parent class, the function of the Software unit is not affected, the parent class can be really reused, and the subclass may also add new behavior on the basis of the parent class. it is because of the substitution of subclasses that the parent class
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