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Current scene:Some business scenarios have not yet turned on the Gtid Service group, and in the latest version, Binlog Group submissions are also based on Gtid, so how to detect compliance with the on-gtid condition, online switching using Gtid, and

1 WSGI#WSGI (is a set of protocols, many things such as Wsgiref, uwsgiref follow this set of protocols)-the Django system is essentially someone's socket (wsgiref or uwsgiref)+Django-The simple definition of WSGI (Web server Gateway Interface) is a

One. PostgreSQL has 3 types of logs, Pg_log (database run log), Pg_xlog (WAL log, redo log), Pg_clog (transaction commit log, transaction metadata logged)Pg_log is off by default and needs to be set to enable this log. Pg_xlog and Pg_clog are both

First, what is the primary key, foreign key:There are several attributes in a record in a relational database, which can be a primary key if one of the attribute groups (note is a group) uniquely identifies a record.Like whatStudent Table (School

CaseWhen condition 1 then result 1When condition 2 then result 2When condition 3 then result 3When condition 4 then result 4.........When condition n then result nELSE result XENDCase has two formats. Simple case function and case search

Recently beans company in the transfer file server, about 80T of files need to be sent to the cloud. The beans were directly copied using the Robocopy. Because of historical reasons, some folders have a wonderful set of permissions, resulting in the

Build a network, the left LAN is 10.0.0.0 network segment, right LAN is 12.0.0.0 network segment, the middle is WAN 11.0.0.0 network segmentThe above success, but not very familiar with, the following again1. First create a network with a visual

There are two types of python3 that represent the sequence of characters: bytes and str. An instance of the former contains the original 8-bit value, and the instance of the latter contains Unicode characters.There are also two types of python2 that

Turn fromwang0606120221:http://blog.csdn.net/wang0606120221/article/details/7402688Assuming that the pattern string in the KMP algorithm is P and the main string is s, then the core of the algorithm is to compute the next function of P of the

The previous article we finished the merge sort, for divide and conquer and recursive thought should have a certain understanding, this article we will introduce the word is considered to be the most error-prone sorting algorithm, but is the

Git address: Https://github.com/kbengine/kbengine_unity3d_demoDemo Chinese Address: https://github.com/kbengine/kbengine_unity3d_demo/blob/master/README_CN.mdQQ Exchange Group: 461368412The experimental version is: Kengine 1.0.0Asset Library;

Distributed services: Spring MVC +mybatis + dubbo+zookeeper+proxy+restfulSUBSYSTEM: Backend management system, RESTFU service System, Dubbo Service/control/monitoring CenterZookeeper Registration Center, Report analysis system, logging system,

Unity does not provide an API to load the thumbnails inside the atlas, and here are the loading methods that I learned from the framework course (because this framework course does not encapsulate loadallasset methods).1. Encapsulate the Uiatlas

Method One: Concat (), connect two arrays, return a new array var a=[1,5, ' ff ', ' g ', ' h ', ' SD ', ' G ']; Alert (Add (A,' G ')); function Add (arr,item) { return arr.concat (item); } Method Two: Slice () plus

One. For collections(1) Normal for loop int [] arr = {2, 1, 2 }; for (int i=0;i) { System.out.println (arr[i]); }(2) For loop enhancement int [] arr = {2, 1, 2 }; for (int i:arr) { System.

Toolsxlsm files to be cracked, Excel2010, Hex EditorSteps1. Modify the. xlsm suffix to. zip2. Use the compression software to open, enter the XL directory to find the Vbaproject.bin file, extract it out3. Use the hex software to open the

Spring cloud itself provides a lot of components, but we need to follow the business model to customize the enterprise needs of the common architecture, then we need to consider what technology to use now?Below I have made the following technical

1 Process creation ProcessOpen System--double-click the program you want to run--exe to start executionStep One:When the system starts, create a process: Explorer.exe (that is, the desktop process)Step Two:When the user double-clicks on an EXE, the

First, Introduction:Elite Container isDELPHIUnder the light of a lightweightIoCObject Container (IoC: Inverse of control, inversion controls). It refers to the spring framework in Java (mainly the configuration file) and combinesDELPHIFeatures to

Core idea: expected calculation.Pre-calculates the metrics that may be used for multidimensional Analysis, saves the calculated results to a cube, and exists in hbase for direct access when queriedHigh-complexity aggregation operations, multi-table