repl

matching substrings as a list.# FindAll, gets a non-repeating match list, and if one group is returned as a list, each match is a string, and if there are multiple groups in the model, it is returned as a list, and each match is ganso; # empty matches are also included in the results #findall (pattern, String, flags=0)# No grouping R = Re.findall ("a\w+", origin) print(r) # There are groups "Hello Alex bcd abcd Lge ACD" = Re.findall ("A ((\w*) c) (d)", origin

location of the bin-log on the Master end are recorded in the master-info file (used in the next Slave request ).D. after the Slave SQL thread detects the newly added content in the Relay Log, it will immediately parse the content in the Log file into the executable Query statements during actual execution on the Master end, and execute these queries on your own.-3) master-slave replication configuration instanceA. master machine: 192.168.100.19 3306, slave machine: 192.168.100.22 3306B. create

name of the Binary Log file on the Master end and the position of the Binary Log file in the BinaryLog;C. after the Slave IO thread receives the information, it writes the received Log content to the end of the Relay Log file at the Slave end in sequence, the file name and location of the bin-log on the Master end are recorded in the master-info file (used in the next Slave request ).D. after the Slave SQL thread detects the newly added content in the Relay Log, it will immediately parse the co

Use PhpArtisanTinker to debug Your Laravel. Today, we will introduce an unfamiliar feature in Laravel to demonstrate how to debug data in the database quickly. By using Laravel artisan built-in php artisan tinker, we can easily view the data in the database and perform various desired operations. Laravel artisan tinker is a REPL (read-eval-print-loop). REPL is an interactive command line interface that

repl @ '192. 16. %. % 'identifided by '123 ';Mysql> show grants for repl @ '192. 16. %. % ';Mysql> show master status;+ ------------------ + ---------- + -------------- + ------------------ +| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |+ ------------------ + ---------- + -------------- + ------------------ +| Mysql-bin.000001 | 11404543 |+ ------------------ + ---------- + -------------- + --------

asynchronous function used to read the file. If an error occurs during the reading of the file, the error Err object will output an error message.If no error occurs, ReadFile skips the output of the Err object, and the contents of the file are output through the callback function.Execute the above code and execute the result as follows:Program execution CompleteBlog Address: http://www.cnblogs.com/gorgeous/Next we delete the Input.txt file, and the execution results are as follows:Program execu

. # from Redis2.6, the default slave is Read-only Slaveread-only Yes # Send pings to the main library at a time interval from the library. You can set this time interval by repl-ping-slave-period the default is 10 seconds # Repl-ping-slave-period 10 # Repl-timeout Set the main library bulk data transfer time or ping reply interval, the default value is 60 se

Sqlcereplication repl = NULL; try {// create sqlcereplication instance // repl = new sqlcereplication (); REPL. interneturl = "http://www.adventure-works.com/sqlmobile/sqlcesa30.dll"; REPL. internetlogin = "myinternetlogin"; REPL. internetpassword = "

-stale-data is set to Yes (the default setting), the library will continue to respond to requests from the client# 2) If slave-serve-stale-data refers to no, any request outside the INFO and SLAVOF commands will return a# error "SYNC with Master in progress" Slave-serve-stale-data Yes# Configures whether the slave instance accepts write. Writing slave is useful for storing ephemeral data (which can be easily deleted after synchronizing with master data), but without configuration, client write m

During SQL Server 2005 database usage, JDBC Driver exception: com. microsoft. sqlserver. jdbc. SQLServerException: the length of the LOB data to be copied (144377) exceeds the configured maximum of 65536. Query a lot of information and provide a solution on the Internet, hoping: After searching for some information, we found that one of the server configuration options"Max Text Repl Size" ("Max Text copy Size"). Its default value is 65536. You can

..... ....... .....?????????.... ....... ..... .................. ......... 1 1.2.1 Standard cluster (REPL set replica set) ... ..... ... ..... ..... ..... ..... ..... ..... ..... ..... ....... ................. 1 The deployment process can be found in the MongoDB high availability cluster C production deployment document V1.0 ...... 1 1.2.2 Standard cluster (REPL set replica set +sharding shard) ....... .

I. Pre-trial planning:Lab Environment: CentOS-6.5Database: Mysql-5.6.19Virtual machines: VMware Workstation 10Network topology structure:Three nodes are not master1,master2,slave. where Master1 and Master2 do a dual master copy of MySQL, slave nodes are based on Master1 from replication.Due to the limitations of the nodes we also use the slave node as the monitoring host.IP Address Planning:master1:10.43.2.81 10.43.2.99 as a node that is provided to the application to connect to readmaster2:10.4

replicationInstantiating and configuring the SqlCeReplication objectSqlCeReplication repl = new SqlCeReplication ();Repl. InternetURL = "Http://www.adventure-works.com/sqlmobile/sqlcesa30.dll";Repl. InternetLogin = "Myinternetlogin";Repl. InternetPassword = "Repl. Publisher

the list will be introduced4, GROUOP and groupsGroup (0) Show AllGroup (1) shows the first group ()Group (2) shows the second group ()If there is no grouping or exceeding the number of groups, an error is5, sub (pattern, REPL, String, count=0, flag=0)The string used to replace the match must be a regular expression within the pattern and cannot be a regular expression search or an assignment variable found by findallFor example, my calculator handles

. findall (string [, pos [, endpos]) | re. findall (pattern, string [, flags]): Search for strings and return all matching substrings in the form of a list. import rep = re.compile(r'\d+')print p.findall('one1two2three3four4')### output #### ['1', '2', '3', '4'] 5. finditer (string [, pos [, endpos]) | re. finditer (pattern, string [, flags]): Returns an iterator that accesses each matching result (Match object) sequentially. import rep = re.compile(r'\d+')for m in p.finditer('one1two2three3four

Mysql master-slave replication technology (TEST) to start configuration: www.2cto.com Step 1: Create a replication account. Each slave uses the standard MySQL user name and password to connect to the master. The user who performs the copy operation will grantREPLICATIONSLAVE permission. The username and password are stored in the master.info text file. Assume that you want TO create a repl user, such as mysql> grant replication slave, replication clie

, but if the following configuration changes the parameters of my. during the cnf file, you will find that the file has been changed. However, when the service is restarted, the modified configuration is not executed, and you will find a lot in the mysql folder. my. cnf. swp and other intermediate files. This is because MySQL did not read my. cnf at startup. In this case, you only need to change the file permission of my. cnf to the permission of my_new.cnf. the command is chmod 644 my. cnf. (4

the replication is in progress, there are two modes of operation from the hangar:# 1) If Slave-serve-stale-data is set to Yes (the default setting), the library will continue to respond to requests from the client# 2) If slave-serve-stale-data refers to no, any request outside the INFO and SLAVOF commands will return a# error "SYNC with Master in progress"Slave-serve-stale-data Yes# Configures whether the slave instance accepts write. Writing slave is useful for storing ephemeral data (which ca

by Repl-ping-slave-period, which is 10 seconds by default# Repl-ping-slave-period 10# Repl-timeout Set the main library bulk data transfer time or ping reply interval, the default value is 60 seconds# Make sure Repl-timeout is greater than repl-ping-slave-period#

of situations:1. Hard disk based (disk-backed): Master Redis creates a new process dump RDB, which is then passed from the parent process (that is, the main process) increment to the Redis2. Socket-based (diskless): Master Redis creates a new process direct dump RDB to the socket from Redis, not through the main process, without the hard driveIf the Rdb file is created after it has been created, it can serve more from Redis at the same time, such as socket-based, new after joining from Redis, s