path, which is/data/svndata/conf/authzrealm = Svndata#realm Specifies the authentication domain for the repository, which is the name of the authentication domain that is prompted at logon. The authentication domain for each project can be customized cat/data/svndata/conf/passwd #每个用户的用户名和密码 [USERS]H2O = Yj3nlmdriver = Yjh9jnjCat/data/svndata/conf/authz #权限管理, t
technical data, optimal configuration)If a large number of repeatable_read (repeatable reads) or serializable (serializable) are found in the program, check to see if the program needs to use a high level of isolation, which causes blocking waits to increase and the database concurrency capability to degrade. Note: If there are a large number of high level transaction levels in the system, make sure that you need a high isolation level to sacrifice t
Optimizer master provides memory-collation capabilities for the shortcomings of Windows operating system memory management. It is suitable for the Windows9x/2000/xp/2003/vista operating system, and can effectively release memory without affecting the system speed. In the use of the process, we recommend that users enter the Wopti memory collation of the Setup interface, click "Recommended", select "Save" t
Optimizer master provides memory-collation capabilities for the shortcomings of Windows operating system memory management. It is suitable for the Windows9x/2000/xp/2003/vista operating system, and can effectively release memory without affecting the system speed. In the use of the process, we recommend that users enter the Wopti memory collation of the Setup interface, click "Recommended", select "Save" t
Label:MySQL master-Slave synchronization architecture is currently one of the most used database architecture, especially the load is relatively large site, so for master-slave synchronization management is very important, novice often in the case of master-slave synchronization errors do not know how to start, This ar
: Item accessory Options 7 . Unit of measure: Commodity accessory option 8 . inventory: Show commodity inventory, inventory small row top 9 . Commodity storage: Enter the goods into storage data, quantity, unit price, storage time. Calculate the total amount of the purchase in a time range ten . Merchandise out: Enter the product out-of-stock data, quantity, sales price, sales out of
own personal knowledge management systemThe powerful features of the document master,To help you build an efficient personal knowledge management system for yourLet yourself continue to understand the meaning of "smart" and "Wisdom ",Get a faster growth!1. Quick Search by TitleChoose Title in the drop-down box for the search method,Then enter the keywords in the
also needs to be supplemented, of course, the general use is sufficient.
MHA Connection Switching:Usually there are two kinds of solutions: first, when the VIP is introduced, when the database is switched, the VIP switches, and most of the commonly used HA software is implemented by VIP, such as Oracle Rac,sql server cluster, heartbeat, etc. The second is to use the global Catalog database , the connection between the application and the database is mapped to a list, when the database swit
http://blog.csdn.net/lang_man_xing/article/details/38386113Redis has been used extensively in projects now, and to improve the performance and reliability of Redis we need to know and do the following:Common memory optimization methods and parametersThe performance of Redis is completely dependent on memory, so we need to know how to control and save memory.First, the most important thing is not to turn on the redis VM option, the virtual Memory feature, which is a persistent policy that is used
command
You can write your own extension
2.dockerIs it a hassle to build a new set of environments every time? What if there are two different programs that depend on different versions of the same environment? Specify an absolute path in the program? Do soft links?Docker helps you solve this problem, the image is packaged and then pushed to register after the pull down on the corresponding machine, put the code, done.Seven, log collection1. ELKUsually we may need to analyze some logs,
the platform) 2. In the database-configuration page, view the configuration information for the database, which contains the database size, recovery model, compatibility level, collation, time of the last checkdb, and so on. File informationView information such as file allocation, file size, growth configuration, path, and so on in the database-Files page. Space allocationOn the database-space page, you can view information such as the number of rows in a Table object in the database
"R/call" From INFORMATION_SCHEMA. Profilingwhere query_id = @query_idGROUP by Stateorder by Total_r DESC;This simple query, which can be found in high-performance MySQL third edition, can be used to count the time-consuming, time-consuming, API, and average time-consuming of each step of the show profile. A number of useful tools (SHOW status,show processlist ...) are also mentioned in the third edition of high-performance MySQL. This book is strongly recommended, including the use of the metho
What is data management in the Application of Excel in data management of retail and e-commerce industries ?" Ladies and Gentlemen: "With the arrival of the end-to-end retail era, every detail in the supply chain of traditional commerce is inseparable from the support of data
Several router problems that the network management has to master (1)
When do I use the multi-route protocol?
When two different routing protocols need to exchange routing information, they need to use multiple routing protocols. Of course, route redistribution can also exchange route information. Multi-route protocol is not required in the following cases:
Upgrade the old version of the Internal Gateway
permission to access the data table1143: The current user does not have permission to access fields in the datasheet1146: Data table does not exist1147: User access to the data table is undefined1149:sql statement Syntax error1158: Network error, read error, please check network connection status1159: Network error, read timeout, check network connection status1
not persist the cluster of data, master boot immediately after the management of the cluster;Master in OnStartValSerializer =Newjavaserializer (conf)Val(Persistenceengine_,LEADERELECTIONAGENT_) =Recovery_modeMatch{ Case"ZOOKEEPER"=Loginfo ("Persisting recovery state to ZooKeeper")ValZkfactory =NewZookeeperrecoverymode
Original: https://www.liaoxuefeng.com/article/00151054582348974482c20f7d8431ead5bc32b30354705000
In large applications, configuring a master-slave database and using read-write separation is a common design pattern. In spring applications, to implement read-write separation, it is best not to change the existing code, but to support it transparently at the bottom.
Spring has a built-inAbstractRoutingDataSourcethat can
MAatkitis a set of open source toolkits forMySQLhelp with the daily management of the WhichMk-table-checksumcan be used to detectMasterand theslavethe table structure and data are consistent. At the same time, throughMk-table-synctool to repair unsynchronized data when the master-slave
set the STANDBY_FILE_MANAGEMENT initialization parameter to MANUAL when the standby datafiles reside on raw devices. this section also describes how to recover from errors after they have occurred.
This section shows how to add a new data file to the master database. The STANDBY_FILE_MANAGEMENT parameter of the slave database is set to MAUNAL. When the data file
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