Create a database table maintenance Specification
It is a good idea to perform a database table check on a regular basis rather than when a problem occurs. Taking into account the establishment of a schedule for preventive maintenance to assist with automatic problems, you can take measures to correct them:
Perform regular database backup and Allow Log updates.
Schedule regular table checks. Using the checklist will reduce the chances of using backup.
I. Cause After a project is released, the bug statistics Appendix "post-release issues" contains:
problem
cause
analysis
remarks
if the number of topics to be processed is too large during CSV processing, the URL parameter upper limit error occurs.
passing a variable-length parameter through a URL may cause this potential error.
1. Due to a problem that occurred twice, the development team was not notified of Relevant Precautions throug
time, executives believe that the risk of innovation is a big point, especially when executives are dissatisfied with profits and returns. The management team avoids the problem of circles during discussions, focusing on innovation in product features that deliver success to the market, as well as challenges in incremental innovation, and on the strengths of competitors in the innovation life cycle. Faced with a variety of life cycle of stagnation, we need more thinking and exploration.(iii) In
This is a test checklist for web applications and desktop applications. Note: This articlearticleA bit long, my goal is to be able to share one of the comprehensive test lists that have been started but not yet completed. I will continue to update the list with many scenarios. If you don't have time to read now, feel free to share it with your friends and bookmark them for later reading. Test clearanceTest CasesAn integral part of the writing process
#脚本用途: Detection of port monitoring ACTIVEMQ cluster and its queue patency #!/usr/bin/envpython#coding=utf-8importparamikoimport timeimportsysimportstompaip= ("First MQ server") bip= ("Second MQ server") cip= (" Third MQ server ") List=[]defchecknetstat ():foriin (Aip,Bip, CIP):hostname=i username= "root" password= "Server password" # Here the default three server passwords are the same paramiko.util.log_to
its identity mask are stored in the CAN message Ram. All protocol processing for data sending and receiving filtering is done by the CAN controller without CIP-51 intervention, which minimizes CPU interference for CAN communication.The CAN controller is a fully functional Bosch CAN module that fully complies with the can specifications 2.0a and 2.0b. The schematic diagram 2 of the CAN controller is shown in. The can core provides shift output, input
STUN Technology:
That is, the serial tunnel technology. This technology sends the SNA software package from the serial port of FEP (3745/6) to the vro, Which is packaged into IP data packets and then transmitted in the network composed of routers, then, the SDLC data packets restored to SNA are sent to the SDLC interface device after the router is split.
CIP technology:
CIP is the Channel Interface Proces
Some small things may be useful sometimes!
1. Obtain the Client IP address.
Function getip (){If (! Empty ($ _ SERVER ["HTTP_X_FORWARDED_FOR"]) {// proxy usage$ Tip = split (",", $ _ SERVER ["HTTP_X_FORWARDED_FOR"]);$ Cip = $ tip [0];}Else$ Cip = $ _ SERVER ["REMOTE_ADDR"]; [Return dechex (ip2long ($ cip ));}
2. session-controlled functions
Function session_begi
only when the request resolution of the IP address to receive the request message port address when the responseArp_annouce: How to advertise the native address, the default is 0, advertise the native All interface address, 2 indicates only the address of the network directly connected interfaceThe purpose of this step is to prohibit the notification of VIPs and respond to ARP parsing requests to VIPs⑵ then configure the VIP on the RS:ifconfiglo:0 VIP netmask 255.255.255.255 broadcast VIP upRou
below.2.1. Vs/nat (virtual server/network address Translation service/network addresses translation)This type of network topology is as follows:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/6C/7F/wKiom1VKwyXxPViZAAMtOT1Qf5w060.jpg "title=" 1.jpg " alt= "Wkiom1vkwyxxpvizaamtot1qf5w060.jpg"/>Term Description:Director represents the scheduler, here refers to the LVS server;Real server represents a server that provides real-world application services outside the scheduler backend;
Some little things written in PHP may sometimes be used!
1. obtain the client IP address.
Function getip (){
If (! Empty ($ _ SERVER ["HTTP_X_FORWARDED_FOR"]) {// proxy usage
$ Tip = split (",", $ _ SERVER ["HTTP_X_FORWARDED_FOR"]);
$ Cip = $ tip [0];
}
Else
$ Cip = $ _ SERVER ["REMOTE_ADDR"]; [
Return dechex (ip2long ($ cip ));
}
2. session-controlled func
is from working Draft, standard for programmingLanguage C + + N4582
inti =2;//Not cv-qualifiedConst int* CIP;//pointer to const intCIP = i;//ok:cv-qualified access path to unqualified*cip =4;//Ill-formed:attempt to modify through PTR to constint* Ip;ip =const_castint*> (CIP);//cast needed to convert const int* to int**ip =4;//defined: *ip points to I, a Non
big mistake.(2). The initialization or copying of pointers can only be one of four types of values:(a). 0 value expressions, for example, 0 worth of Integer const objects or literal constants 0 are obtained at compile-time.(b). The address of the type-matching object.(c). The next address after another object.(c). Another valid pointer of the same type.5.void pointer : It can hold the address of any type of object.6. Comparison of pointers to references:(1). A reference always points to an obje
the registration of the most convenient to enter the target page, the optimization target may be the minimum input, the shortest waiting time.
Iii. Quick Checklist (check list)
In order to achieve the goal of optimization, a simple checklist (pdf version of the download link to see the end of the article), easy to check the structure, layout, content, behavior four aspects of the check:
1. Architecture
specifically, you should delete any other virtual directories.
Even for virtual directories that already have some software installed, it's important to figure out which software is available for access to your Web site. In Internet Services Manager, right-clicking a site or virtual directory, selecting Properties from the menu that appears, selecting the Virtual Directory tab, and then clicking the Configure button will appear with the Application Mappings tab, which lists the different ISAPI
Analysis of Two length constraints
(From Project)
I. Cause
After a project is released, the bug statistics Appendix "post-release issues" contains:
Problem
Cause
Analysis
Remarks
If the number of topics to be processed is too large during CSV processing, the URL parameter limit error occurs;
A variable-length parameter is passed through a URL, which may cause this potential error.
1. Two issues occurred, and the Development did not promptly send relevant p
I. CauseAfter a project is released, the bug statistics Appendix "post-release issues" contains:Problem Cause Analysis remarksDuring CSV processing, if the number of topics to be processed is too large, the maximum number of URL parameters is incorrect. If a variable-length parameter is passed through the URL method, this potential error may occur. 1. Two issues occurred, and the Development did not promptly send relevant precautions to the team members through
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