The flow of user management features is:
1. Management functions will jump to Usermanager's action via struts (Spring help injection instance)
2.UserManagerAction inside the ManagerService instance (also spring credit), call inside the method of adding and deleting
3.ManagerService instance directly invoke the concrete implementation method of the increment and deletion check in DAO
4. These specific implem
Tags: width tor sele 5.5 start feature img CLU successOne, Redis Key Management 1 key RenameRename Oldkey newkey//formatRename Oldkey NewKey//If Oldkey exists before it is overwrittenSet name James; set name1 Mike//Data initializationRenamenx name name1//renaming fails only if NAME1 does not exist to rename2 return random keyRandomkey//Return random key3 keys ExpireExpire name:03 20//Key name:03 expires in 10 secondsTTL name:03//view expires in second
connection between filesFormat:ln [opition] ... [-T] Target Link-nameCommon options:-S: Create a symbolic link, or create a hard link if you do not add this option;-V: Show Link creation processVersion Management for application publishing:The different versions of the application are stored in different directories, linked to a version of the application directory through symbolic links, if the new version of the application problems, simply link th
Same as Useradd command4> Password Expiration control------chageFormat: chage [options] User nameCommon commands: chage-d 0 user name "Allow user to change password at first logon"-l list Password expiration information-e Specify the account expiration time Yy-mm-dd-i specifies how many days to lock the account when the password expires-m specifies the minimum number of days for password invalidation-m Specifies the maximum number of days the password expires5> Delete User------UserdelFormat: U
Command name: ChownEnglish: Change file ownershipCommand path:/bin/chownSyntax: chown [user] [file or folder]Description of the function: Change the file or folder of the entire personExample: Chown Shenchao FengjieChange the file Fengjie the whole person is ShenchaoCommand name: CHGRPEnglish: Change file group ownershipCommand path:/BIN/CHGRPSyntax: chgrp [user] [file or folder]Function Description: Change the group to which the file or folder belongsExample: Chown lampbrother FengjieChange fil
Rotation of the log1. Naming rules for log filesA. If the configuration file has the "dateext" parameter, then the log will use the date as the suffix of the log file, for example: "secure-20150630". So the log files do not overlap, so you do not need to rename the log file, just to save the specified number of logs, Delete the extra log files.B. If there is no "dateext" parameter in the configuration file, the log file needs to be renamed, and when the first log rotation is made, the current "s
full name of the package is still duplicated and that the full name of the package needs to be apr-util-1.3.9-3.e16_0.1 by pressing two times.After the cursor is in the input "x" (Press the TAB key once) Enter to continue the installationNote that the first dependency libapr-1.so.0 is a library file (or module) that needs to be opened Http://www.rpmfind.net search for the first fileFind the full name of the installation package corresponding to the Linux systemRPM-IVH Apr-1.3.9-5.el6_2. (Press
and bitmap index
(a) B-tree index (default)
A, on a large table
B, based on a column with fewer duplicate values, the number of rows returned is less than 4% of all records when a select query is made
C, if this column is often used to make a WHERE clause and sort, it can also be used to create an index
D, generally used for OLTP
(b) Bitmap index
A, based on a column with a very high repeat value
b, when doing DML operation, the cost is higher
C, generally used in OLAP or DSS
Note: Th
system after it isMkfs. File system [disk partition]:MKFS.EXT4/DEV/SDB17. Swap partition To improve read and write efficiency and speed, the Linux kernel caches files in memory, which is the cache memory. The Cache memory will not be released automatically even after your program has finished running. This will cause you to read and write files frequently in your Linux system, and you will find that there is less available physical memory. When the system's physical memory is not sufficient, i
Same as Useradd command4> Password Expiration control------chageFormat: chage [options] User nameCommon commands: chage-d 0 user name "Allow user to change password at first logon"-l list Password expiration information-e Specify the account expiration time Yy-mm-dd-i specifies how many days to lock the account when the password expires-m specifies the minimum number of days for password invalidation-m Specifies the maximum number of days the password expires5> Delete User------UserdelFormat: U
Basic Linux commands exercise:1, create a new user without home directory OpenStack;#useradd-M OpenStack2 , copy/etc/skel to/home/openstack;#cp-R/etc/skel/home/openstack3, change/home/openstack and its internal documents belong to the main group are openstack;#chown-R Openstack:openstack/home/openstack4,/home/openstack and its internal files, belong to the group and other users do not have any access rights;#chmod-R go=/home/openstackThis article is from the "Learn Linux history" blog, please be
In the command line in the multi-network management is a special demand from me, but for a variety of reasons, do not want to change back to network that old way to manage the network.
Let's talk about this particular need:
Run Ubuntu (virtual machine) in your notebook, with a Web site project, because both in the office and at home can be simultaneously through the external network debugging project, so also integrated peanut shell. In this case, bec
Razuna is an Open-source digital media asset Management (Digital Asset Management) system written in the Java language. Here is a translation of its installation steps.
Razuna contains the following versions:
Razuna stand-alone Server
It is built on a tomcat server. This is by far the fastest and easiest way to start and run. Recommend new users to use.
Razuna Virtual Image
Contains all the things that ar
12.1 Planning Procurement management
Planning procurement Management is the process of recording project procurement decisions, clarifying procurement methods and identifying potential sellers.
The main role of this process is to determine whether external support is required and, if necessary, to decide what to purchase, how to purchase, how much to purchase, and when to purchase.
12.2 Implementation
Block management for index and table scan/Flashback
1. Add--about the data_object_id and object_id fields in Dba_objects:
TRUNCATE TABLE test1;
ALTER TABLE test1 move tablespace TP2;
Select object_id,data_object_id from dba_objects where object_name= ' TEST1 ';
OBJECT_ID data_object_id
---------- --------------
22959 23144
DATA_OBJECT_ID change when truncate and moving to different table spaces.
But when there is no data in the table, truncat
not NULL Identity(1,1)PRIMARY KEY,--numberingAuthorNamenvarchar( +) not NULL,--Author's nameSexbit not NULL DEFAULT 1,--SexBirthdaydatetime NULL,--BirthdayEmailnvarchar( -)DEFAULT '[email protected] ' CHECK (email like'%@%'),--e-mail telphone nvarchar (60),--Contact phone City nvarchar (+) DEFAULT'Beijing',--Description ntext–-, City of residence, introduction to the author)Determine if a data table existsEach database has a system table sysobjects, which stores all the data tables, constrain
functions in a specific database lock tables: Grant the lock permissions for tables in a particular database All/all privileges: All rights as: Grant lin3615 to query the test database for all tables in Grant Selectto Test.*on lin3615as: Grant lin3615 to create data tables in database test, update data tables, delete data table permissions Grant Create,alter,dropon test.*to lin3615 Grant user Rights create User: Give users permission to set up and delete databases Show database: Give users perm
...] # Subscribe to one or more patterns, the pattern parameter can contain glob style matches (*,[],?)Psubscirbe news::[ie]t# The behavior of the unsubscribe command is different for each client, REDIS-CLI directly out of the client to unsubscribe, Python and Ruby need to display the execution commandUnsubcribe [channel|[ Channel ...] # Unsubscribe from designated channels and unsubscribe from all subscribed channels if not specifiedPunsubcribe [pattern|[ Pattern ...]] # unsubscribe from the s
Tags: image png pipe Save consumption class post operating system production
Scheduling
Context Switch:save Context (PCB), restore context (PCB). Overhead
How to maintain the status of individual processes: PCB + queue (Job queue, ready queue, I/O device queue)
Who's the next to run? :
CPU Scheduler (short 100ms): Good repsonse time
Admission Scheduler (long-term 1+min): the degree of multiprogramming and mix of Cpu-and I/O-bound
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.