What is com?The so-called COM (componet object model, Component Object Model) is a specification that describes how to establish dynamically changing components. This SPECIFICATION provides a way to ensure interoperability, some binary and network standards that customers and components should follow. This standard allows communication between any two components
strength of the magnetic field is more and more large, the impact of signal interference is more and more obvious.
Theoretically, the working frequency of serial transmission can be increased infinitely, and serial ATA is to improve the interface transmission rate by increasing the working frequency. As a result, serial ATA can achieve a higher transmission rat
[Translated from mos] What is split-brain in Oracle Clusterware and RAC? mosclusterware
What is split-brain in Oracle Clusterware and RAC?
Source:What is Split Brain in Oracle Clusterware and Real Application Cluster (Document ID 1425586.1)
Applicable:Oracle Database-Enterpr
This article mainly describes the Ajax of some of their own summary, some questions and some answers, hoping to help everyone. Now let's see this article together.
First Ajax is the full name of asynchronous JavaScript and XML,asynchronous is asynchronous, which is different from the traditional web.
What
What is private key cryptography technologyThe private key (symmetric key), also known as the symmetric key. The key encryption algorithm uses the same key for encryption and decryption. It has the advantage of very fast encryption and decryption, but it is difficult to distribute and manage keys. The sender and receiver
Here you can see the release of all the PostgreSQL version, I take postgresql9.5.4 this version, the other version of the compilation process is similar, we are casual, here do not repeat.After the source is taken, you are ready to start compiling the installation.The browser development teams of two companies are consistent in their view of browser events. If you click a button, they think the Click event
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The Internet is connected to non-counting computers. How to distinguish them is a matter that must be carefully considered, just as people use "names" for distinction, every computer directly connected to the Internet must also have a unique identifier. Otherwise, how can we find the expected receiver of the information
What is serialization and deserialization ???
Serialization and deserialization are often heard. In fact, a simple explanation is that serialization stores an object in a file or database field, deserialization is to convert the file to the original object at an appropriate time.
When two processes perform remote commu
troubleshooting backup slowness and application latency. in this articleArticleWe will clearly define the TCP window to see how it affects performance and how to monitor it using Wireshark.
What is a TCP window?
When discussing TCP window, we almost always refer to TCP receive window. to put it simply, the TCP receive window is a buffer at both ends of th
due to 1 of the characteristics of the said, so that the cost of UDP smaller data transmission rate is higher, because there is no need to send and receive data confirmation, so UDP real-time better.Know the difference between TCP and UDP, it is not difficult to understand why the use of TCP transmission protocol MSN than UDP transmission file slow, but can not
What is XML?
XML is the abbreviation for Extensible Markup language
XML is a markup language similar to HTML
XML is used to describe the data
The markup for XML is not predefined in XML, you must define your own markup
X
following blog. It should be pointed out that Netfilter and IP protocol stack are seamlessly compatible, so if you have the foundation of the protocol stack, you will feel familiar when reading this article. Of course, it doesn't matter if it doesn't, because I will popularize the introduction of protocol stack at key points. It's just a matter of popularity. I won't go into details, because there are too many things involved, and I am still researching and exploring it. Okay. Let's get started
What mail server is better for linux-Linux Enterprise Application-Linux server application information, the following is a detailed description. Recently I want to learn about the mail server in LINUX, but I don't know what to use? Check on the Internet and check whether there are many problems such as postfix, Qmail,
butcher) performance of its technology. Butcher have sub-categories Plainbutcher and Twobbutcher. static void Show (Butcher b) {//Show B.kill (); }The general butcher--plainbutcher object, according to the general way kills the pig, but the individuality butcher--twobbutcher the object, kills the pig to kill the buttocks. So.B.kill ();There are a variety of performances or outputs at execution time.
Polymorphic (polymorphism) is
What is the Hessian protocol?At present, Web service technology is the mainstream technology to solve the problem of integration and interoperability of heterogeneous platform systems.The XML on which it is based is already the real standard of exchanging data on the Interne
. The good news is that akka's actor, in terms of concept, contains a lightweight thread of its own, which is completely separated from other parts of the system. This means that you do not need to consider synchronization locks.In the background, akka runs multiple actor objects on a physical thread. Generally, several actors share a physical thread, the subsequent calls of an actor may use different physi
should have an IP address filtering language and can filter packets based on their nature.
The nature of a data packet includes the destination and source IP addresses, protocol types, source and destination TCP/UDP ports, the ACK bit of the TCP packet, and the outbound and inbound network interfaces.
A complete VPN system generally includes the following units:
VPN Server: a computer or device is used to receive and verify VPN connection requests an
Http://www.cnblogs.com/ggjucheng/archive/2012/02/03/2337046.html
What is confused window syndrome?
When the sending application process produces slow data, or the receiving application process processes slow data in the receiving buffer, or both, the packet segment transmitted between application processes is very small, especially the payload
, kills the pig's ass.
Polymorphism)Is to point to the Message Receiver (polymorphism variable) to send the same message, can get different responses.
When I was in class, I said, if you want to give a brief answer to what is polymorphism during the exam, you should write: "I have different methods to kill pigs and k
Keywords: dab digital signal broadcastI heard from them about dab in the company, but I don't know what it means.DAB is short for Digital Audio Broadcasting. It provides sound close to the quality of Cd, as well as additional data services for broadcasting and unlimited business opportunities, making it easier for listeners to listen, no interference broadcast providers provide CD quality programs to their
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