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Previous: http://www.bkjia.com/kf/201112/115493.htmlJavaScript Regular -- RegExp:RegExp has a test () method. If a given string (with only one parameter) matches this mode, it returns true. Otherwise, it returns false.Differences and meanings of/I,/g,/ig,/gi,/m in Regular Expressions/I (case-insensitive)/G (full-text search for all matching characters)/M (multi-row search)/Gi (full-text search, case-insensitive)/Ig (full-text search, case-insensitive)Var str = "jfkd @ s, laj @ fd, safd @ saf, ds

HookTaskType HookTaskType Meta string `xorm:"TEXT"` // store hook-specific attributes LastStatus HookStatus // Last delivery status Created time.Time `xorm:"CREATED"` Updated time.Time `xorm:"UPDATED"`} Variable Naming conventions Variable names generally follow the Hump method, but when you encounter a particular noun, you need to follow these rules: If the variable is private and the noun is the first word, use lowercase, as in apiClient . Ot

Use the Xtrabackup tool to back up and restore (a required tool for MySQLDBA) bitsCN.com Xtrabackup------ Necessary tools for MySQL DBA Note: 1) documents reference http://www.percona.com/docs/wiki/percona-xtrabackup:start 2) mysql version 5.1.50 or later. 1. introduction and installation of Xtrabackup 1. Xtrabackup is an open-source project of percona. it supports hot backup of innodb, XtraDB, and MyISAM (locks tables). It can be seen as a free alternative to InnoDB Hotbackup. Percona Support f

content and group header. If the result is the same, the message actually comes from a trusted host. If it is different, it must be discarded, this prevents attackers from sending announcements that may affect the selection process by accessing the LAN, or by using other methods to interrupt the network. In addition, VRRP includes a mechanism to protect VRRP groups from being added to another remote network (set TTL to 255 and check when accept ), this limits most of the defects of local attack

code, virtual connection virtual concatenation, and Link Capacity Adjustment Scheme-LCAS. GSMP is designed to implement multiple data services and use statistical multiplexing to work with existing underlying transmission links. This not only improves the efficiency of transmission bandwidth usage, but also guarantees the QoS and SLA of connection services. It can be said that green is a simple and easy-to-use Adaptation Mechanism for transmitting Et

marketing strategies. For telecom operators, the value of refined operation is to increase customer satisfaction and customer loyalty. In his opinion, the best way to implement refined management is to manage broadband users one by one and provide each customer with a unique experience with a specific SLA (Service Level Agreement. In this way, service operators can maximize the revenue of individual users and minimize network costs. It is understood

effectively support the three-in-one business needs in the future. Services supported by the optical fiber access network include:1. INTERNET access: Provides normal INTERNET access to ensure sufficient bandwidth for browsing pages, uploading and downloading, and other common applications.2. VoIP: a future-oriented NGN network that provides network telephone services.3. IPTV/VOD: supports various unicast or multicast video services, including IPTV and VOD services in PC or set-top box mode. Res

, indicating the number of first SQL statements sorted by rules. -Statement-filter (-sf) [+-] [TYPE]: Filter the types of SQL statements, such as select, update, and drop. [TYPE] SELECT, CREATE, DROP, UPDATE, INSERT, for example, "+ SELECT, INSERT". The default value is-, that is, not included. -Databases db: The log of the database to be processed. Example Display the 10 SQL statements with the longest execution time in mysqlslow. log and write them to SQL _10.log. Mysqlsla-lt slow-Sf "+ sele

Speeds Up Disk-Bound Join Queries.Optimizer diagnosis improvement-MySQL 5.6 optimizer in diagnosis and debugging EXPLAIN for INSERT, UPDATE, and DELETE operations, EXPLAIN plan output in JSON format with more precise optimizer metrics and better readability Optimizer Traces for tracking the optimizer demo-- making process. Learn about all of MySQL 5.6 Optimizer improvements and features, along with all technical documentation If you want to learn implementation details, how to use and use

Links to related articles:Manage business requirements in multiple database environments) 4. Impact of Business Management on IT The challenges facing IT-driven business development must be addressed in four basic contradictions. Contradictions in these businesses require a set of process strategies to meet the needs of the entire company. The commercialization of software tools has a mixed effect. These contradictions include: ◆ Optimize solutions and integrated solutions.◆ In-depth and platfo

' needs at any time. to match these changes, the data center network must be equally flexible, agile, and scalable. It must be automatic. As users demand resources, cloud computing can create virtual machines in a very short period of time. The network must respond quickly and match with it. Configure your own resources to process the required routes to meet the connection requirements. To ensure that all of this can run without human intervention, cloud and network must be able to use the same

guarantees the quality of service for 3G network mobile terminals of different levels of business applications, different SLA requirements to achieve end-to-end in the same management domain. Before the official commercialization of 3G, there will be different stages, such as the integration, testing, and deployment of devices from different manufacturers. The most prominent problem at this stage is the difference between IETF and 3GPP/PP2 SIP networ

(branch-3.0 and branch-3.7.1 I have tried ), or it may be caused by problems such as the installation of some software packages on which CentOS depends. We recommend that you use a newer version of CentOS, where I use CentOS-6.6 (Final), branch-3.7.1 source code compilation for Hue, and Python requires 2.6 +. With Hue, we may also be interested in user management and permission assignment. Therefore, we can use other relational databases, such as MySQL, as needed, and back up data, to prevent

whether to inject test traffic to the tested network. Active measurement refers to the use of surveyors to actively inject test traffic to the tested network at the test points selected before the test, the test method of network technical parameters is analyzed based on the transfer of the test traffic. Proactive measurement has good flexibility. It can clearly control the characteristics of the measurement flow generated in the measurement according to the measurement environment, such as fea

the Web service is better suited for comparison with the same RPC framework. When the RPC Framework provides discovery and management of the service and uses HTTP as the transport protocol, it is actually a Web service.The relative Web SERVICE,RPC Framework provides finer-grained governance of services, including traffic control, SLA management, and more, with a greater advantage in microservices and distributed computing.RPC can be based on HTTP or

Now that MVC is maturing, it's confusing to face different versions of MVC--what's the difference between them? Below I gather the information I collected, so that we can better understand the different versions of MVC features, but also easy to check.View Engine: View Engine is responsible-rendering of the HTML code from your views to the browser.MVC 2 uses only Web Forms view engine (. aspx) as a default view engine.MVC3 uses Razor view engine (. cshtml for C # and. vbhtml for Visual Basic) an

provided by SQL Server, let's take a look at the design of high availability policies. High Availability policy planning can be divided into four stages: Collection requirements The first step in determining a high availability policy is undoubtedly to collect business requirements to establish SLA. The RTO and RPO mentioned earlier in this article are the most critical parts. On this basis, practical expectations are established for availability r

module provides integrated hardware functions required to implement diagnostic functions, such as FC Traceroute that describes the accurate traffic paths and time, and Switched Port AnalyzerSPAN that can intelligently capture network traffic ). After the traffic is captured, you can use the Embedded Fiber Channel Analyzer Cisco Fabric Analyzer for analysis. With comprehensive port and traffic statistics, you can perform advanced performance analysis and SLA