brightcloud technologies

of the nginx principle, which can be considered as an in-depth professional in the nginx direction.3. Mysql/mongodb:In the second stage of the foundation, in the MySQL application, in addition to the previous basic SQL optimization, but also in the completion of a number of complex operations, such as the import and export of large quantities of data, a large number of online data change table structure or delete index fields and other high-risk operations; In addition to the installation confi

With the rapid development and popularization of the Internet, a new industry and new jobs are rising to the technical level: Web front-end development engineer. What is a web front-end engineer for many 0-based web front-end beginners? What does a web front-end engineer do? What can I do to learn the Web front end? Just touching the web front end will be plagued by a variety of problems. Below, thousands of small series for everyone to dispel doubts.1. What is a web front end engineer?Web front

Xen,vmware the principles of virtualization technologies such as ESXI,HYPER-V and KVMApril 03, 2018 13:51:55 read: 936 XEN compared to VMware esxi,hyper-v and KVM features:XEN has simplified virtual mode, does not need device driver, can ensure that each virtual user system is independent of each other, relying on service domains to complete some functions;VMware ESXI is similar to XEN and includes basic elements such as device drivers and management

The 2005 Java World is the birth of a number of new technologies and new products, small series from the selection of the best 10 new technologies and new products, the 10 product selection criteria only one: the future of Java development and application has a significant impact. If you have a different opinion, please write to me. 　　 One, Java EE 5 Java EE 5 is not simply renamed by Java, Sun has made

Gigabit Ethernet, the technical updates meet the demands of a new generation of Internet technologies for high-speed bandwidth growth and a new generation of applications. Let's take a look at the next generation of technology in the Gigabit Ethernet switch. A distributed Exchange system Users invest in Gigabit Ethernet switches because they need to be able to process packet forwarding in any case, need to be able to handle a new generation of Int

When you look at this book, you may have learned most of the techniques needed to implement Ajax in your application. Again, we want to emphasize that Ajax is a client technology that uses AJAX regardless of the server-side technology you're using, regardless of whether you're using Java,. NET, Ruby, PHP, or CGI. In fact, we don't consider the server side in this book, and suppose you already know how to combine the server-side technologies used in yo

At present, China's broadband access network has developed very mature and many new technologies have emerged. Here we introduce the development status of VDSL and analyze some of its problems, I would like to share it with you here and hope it will be useful to you. 1. Technical Standards of VDSL VDSL currently has two major incompatible technical standards: one is DMT discrete multi-audio modulation, and the other is CAP and QAM without carrier ampl

In data communication, multiplexing technology greatly improves the channel transmission efficiency and has been widely used. Multiplexing technology is to combine multiple signals at the sending end (such as the mixer used at the front-end of broadcasting and television), and then implement transmission on a dedicated physical channel. The receiving end then separates the compound signal. Multiplexing technology is mainly divided into two categories: Frequency Division Multiplexing (Frequency D

short for high-speed digital user line. It is a new DSL technology, known as xDSL's End-level technology. The maximum downlink rate of VDSL in a short distance can reach 55 Mbit/s, and the uplink rate can reach 19.2 Mbit/s. Because it directly uses the Ethernet frame format at the link layer, VDSL and Ethernet provide completely consistent support for IP services and are currently the most ideal xDSL technology for carrying IP addresses and Ethernet networks, it is also the best method to repla

, the access process of Broadband Access Servers relies on the underlying data link layer, mainly the ATM layer and Ethernet layer) to encapsulate and reorganize data packets. Taking advantage of the technical features of the underlying layer, not only is the access networking flexible, but also can effectively bind the technical advantages of ATM and Ethernet to ensure service quality. Specifically, through RFC1490 and RFC1483 Layer 2 bridging technologies